Caterpillar D4K XL
Caterpillartrack-type tractor

Caterpillar D4K XL

Maintenance schedule, common problems & OEM parts breakdown

The Caterpillar D4K XL is a compact track-type tractor (small dozer) built from roughly 2007 to 2017, sitting between the D3K and D5K in Cat's small-dozer line. It runs the Cat C4.4 ACERT diesel, rated 68.6 kW (92 hp) gross and 62.6 kW (84 hp) net, paired with a hydrostatic (Hystat) dual-path drive that gives power-turn and full counter-rotation steering in place of a mechanical clutch-and-brake system. Operating weight in the XL configuration runs around 8.15 t (17,961 lb), varying with blade and undercarriage choice. Cat offered extra-long (XL) or low-ground-pressure (LGP) track frames, a 6-way VPAT power-angle-tilt blade or a straight SU blade, and a choice of sealed-and-lubricated (SALT) or SystemOne undercarriage. The D4K XL replaced the D4G in the lineup and was itself succeeded by the D4K2 XL.

The D4K generation's biggest shift from the D4G was making hydrostatic drive standard, giving finer speed and steering control than the D4G's earlier powertrain, plus the option of a SystemOne undercarriage that stretches bushing life and cuts routine track maintenance versus a conventional sealed-and-lubricated chain. The D4K XL met Tier 3/Stage IIIA emissions rules; when the D4K2 XL took over it kept the same basic Hystat architecture and dimensions but moved to Tier 4 Final certification with exhaust aftertreatment, a bigger step change than the D4G-to-D4K jump. In the used and parts market, the D4K XL's decade-long production run and shared platform with the D3K and D5K siblings mean a wide installed base, steady resale supply, and broad parts and undercarriage-component availability, making it a common shop and rental-fleet choice for owners who want Tier 3-era simplicity without Tier 4 aftertreatment.

Below: full specifications, fluids & capacities, the factory service schedule, common service parts, verified fault codes, what owners discuss, attachment guidance, the complete assembly directory, and a serial-number reference. Complete parts lists with full OEM part numbers, exploded diagrams, quantities, and fitment data are available free in Heavy Parts AI.

Caterpillar D4K XL specifications

Engine

Engine modelCat C4.4 ACERT, turbocharged, 4-cylinder inline, common-rail fuel system with ACERT electronic control
Gross power68.5 kW (92 hp) at 1,900 rpm
Net power62.6 kW (84 hp) at 1,900 rpm (rated consistently under Caterpillar, ISO 9249, EEC 80/1269 and SAE J1349 methods)
Displacement4.4 L / 4,400 cm3 (269 in3)
Bore x stroke105 mm x 127 mm (4.13 in x 5.0 in)
Emissions standardU.S. EPA Tier 3, EU Stage IIIA, Japan MOC Step 3
Altitude derateNone required up to 3,000 m (9,843 ft)
NotesOne engine/rating covers the D4K XL for its production run. The later D4K2 XL is a separate, newer-emissions-tier generation and is not the same engine calibration; do not blend the two.

Weights

Operating weight, XL configuration8,147 kg (17,961 lb)
Operating weight, LGP configuration8,501 kg (18,742 lb)
Weight basisMachine with dozer blade, canopy ROPS, back-up alarm, operator, coolant, lubricants and a full fuel tank

Dimensions

Track gauge, XL1,550 mm (61 in)
Track gauge, LGP1,725 mm (67.9 in)
Width over tracks (std shoes, no blade), XL2,010 mm (79.1 in)
Width over tracks (std shoes, no blade), LGP2,360 mm (92.9 in)
Overall length with blade, XL4,274 mm (168.3 in)
Overall length with blade, LGP4,266 mm (168 in)
Length of basic tractor without blade3,275 mm (128.9 in), same for XL and LGP
Overall tractor height2,763 mm (108.8 in), same for XL and LGP; some spec listings show a slightly lower figure near 2,716 mm (106.9 in) to top of cab depending on cab vs. canopy ROPS fitment
Ground clearance332 mm (13 in), same for XL and LGP
Grouser height47 mm (1.9 in)
Standard shoe width, XL460 mm (18 in)
Standard shoe width, LGP635 mm (25 in), wider shoe for added flotation

Performance

TransmissionDual-path, closed-loop hydrostatic drive with infinitely variable speed control, single joystick for speed, direction and steering
Maximum travel speed, forward9 km/h (5.6 mph)
Maximum travel speed, reverse10 km/h (6.2 mph)
Drawbar pullPublished as a performance curve rather than one figure: peak pull near minimum travel speed runs roughly 160 to 180 kN (about 36,000 to 40,500 lb), tapering steadily as travel speed rises toward the 9 km/h (5.6 mph) forward max. No single-number gradeability percentage is published for this model.
Ground pressure, XL38.6 kPa (5.6 psi)
Ground pressure, LGP29.2 kPa (4.24 psi)
Ground contact area, XL20,682 cm2 (3,206 in2)
Ground contact area, LGP28,550 cm2 (4,425 in2)
Length of track on ground2,248 mm (89 in), same for XL and LGP
Drive-system relief valve setting47,650 kPa (6,911 psi)
Steering and brakingFull power turn with counter-rotation, single-lever steering/speed/direction control, hydrostatic (dynamic) braking through the drive system plus a center brake pedal

Blades (VPAT 6-way blade)

XL blade width2,782 mm (109.5 in); some aggregator listings round this to about 2,800 mm (9.2 ft)
XL blade height1,010 mm (39.8 in)
XL blade capacity (SAE)1.98 m3 (2.59 to 2.6 yd3)
XL blade lift height743 mm (29.3 in)
XL blade digging depth573 mm (22.5 in)
Intermediate blade width2,921 mm (115 in)
Intermediate blade height860 mm (33.9 in)
Intermediate blade capacity (SAE)1.50 m3 (1.96 yd3)
Intermediate blade lift height / digging depth743 mm (29.3 in) lift; 590 mm (23.2 in) digging depth
LGP blade width3,149 mm (123.9 in)
LGP blade height910 mm (35.8 in)
LGP blade capacity (SAE)1.85 m3 (2.42 yd3)
LGP blade lift height / digging depth708 mm (27.9 in) lift; 590 mm (23.2 in) digging depth
Blade cutting-edge angle (adjustable, all blade options)52 to 58 degrees
Maximum blade angle, either side (all blade options)25 degrees
Maximum blade tiltXL 387 mm (15.2 in); Intermediate 448 mm (17.6 in); LGP 438 mm (17.2 in)
Blade type notes6-way VPAT blade with adjustable angle, tilt and pitch; built for finish grading, ditching, windrowing, fill spreading, light-to-medium land clearing and general dozing

Hydraulic and Implement System

Implement pump output73.5 L/min (19.4 gal/min) rated at 2,150 rpm and 6,895 kPa (1,000 psi)
Implement relief valve setting20,600 kPa (2,988 psi)
Control functionsLift cylinders: raise, hold, lower, float. Tilt cylinders: left, hold, right. Angle cylinders: left, hold, right. Ripper cylinders (when fitted): raise, hold, lower.

Undercarriage

Undercarriage optionsSealed and lubricated track (SALT) standard; SystemOne rotating-bushing undercarriage optional for reduced maintenance and vibration
Track frame configurationsExtra-long (XL) for increased ground contact and finish-grading balance, or low ground pressure (LGP) with a wider shoe for flotation on sloping/soft ground
Final driveDouble-reduction planetary gear set, mounted independently of the track frames to isolate it from machine weight and ground shock loads

Service Capacities

Fuel tank195 L (51.5 gal)
Engine oil (crankcase and filter)11 L (2.91 gal); aggregator listings commonly round this to about 11.4 L (3 gal)
Cooling system22.4 L (5.92 gal); aggregator listings commonly round this to about 22.7 L (6 gal)
Transmission/hydraulic tank59.5 L (15.7 gal)
Final drive, each side (XL and LGP)10 L (2.6 gal)

Optional Rear Attachments

Parallelogram ripper - max digging depth337.5 mm (13.3 in)
Parallelogram ripper - max reach at ground line596 mm (23.5 in)
Parallelogram ripper - max ground clearance under tip448 mm (17.6 in)
Parallelogram ripper - overall width1,710 mm (67.3 in)
Parallelogram ripper - weight554 kg (1,222 lb)
Hydrostatic winch - weight610 kg (1,345 lb)
Hydrostatic winch - maximum line pull, bare drumapproximately 18,144 kgf (40,000 lb)
Hydrostatic winch - maximum line pull, full drumapproximately 11,340 kgf (25,000 lb)
Hydrostatic winch - maximum line speed40 m/min (131 ft/min) bare drum, up to 63 m/min (207 ft/min) full drum
Hydrostatic winch - recommended rope diameter and capacity16 mm (0.63 in) rope, about 113 m (371 ft) drum capacity with recommended cable

Values vary by configuration, region, and serial range — confirm against your machine before planning transport or lifts.

D4K XL fluids & capacities

SystemCapacityRecommended fluid
Engine crankcase (with filter) - Cat C4.4 ACERT diesel11 L (2.9 US gal / 2.4 Imp gal), same on both D4K and D4K2 generations.Cat DEO-ULS meeting API CJ-4 and ACEA E9 (or an oil meeting Cat ECF-3 and API CJ-4); ACEA E9 oils are an acceptable substitute if ECF-3/CJ-4 oil is not available. By ambient temperature: Cat DEO-ULS Cold Weather SAE 0W-40 for -40 to 40 degrees C (-40 to 104 degrees F); Cat DEO-ULS SAE 10W-30 for -18 to 40 degrees C (0 to 104 degrees F); Cat DEO-ULS SAE 15W-40 for -9.5 to 50 degrees C (15 to 122 degrees F). Use the highest viscosity allowed for the expected temperature range.
Cooling systemTotal system 22.4 L (5.9 US gal / 4.9 Imp gal) on the original D4K; 23.0 L (6.1 US gal / 5.1 Imp gal) on the D4K2. Radiator-only portion of that total is about 7.5 L (2.0 US gal) on the D4K and 7.9 L (2.1 US gal) on the D4K2.Cat ELC (Extended Life Coolant) preferred; Cat DEAC (Diesel Engine Antifreeze/Coolant) acceptable. Never run plain water without supplemental coolant additives. On the D4K2, ELC change interval is every 12,000 hours or 6 years. Coolant sample level depends on which coolant is filled: ELC-filled systems get a Level 2 sample; systems filled with any other coolant get a Level 1 sample instead.
Fuel tank195 L (51.5 US gal / 42.9 Imp gal), same across generations.Ultra low sulfur diesel meeting Cat's distillate fuel specification and the latest ASTM D975 or EN 590 - 15 ppm sulfur or less in North America, 10 ppm or less in Europe. On the D4K2, up to a B20 biodiesel blend is acceptable in the engine; the diesel portion of any biodiesel blend must still be ultra-low-sulfur.
Transmission / powertrainNo separate powershift transmission or bevel-gear/steering compartment exists on this machine. Drive is hydrostatic (Hystat): a variable-flow pump and motor pair per track, with no bevel gear, driveline, or steering clutch/brake set. The Hystat drive circuit draws from the common hydraulic tank/system - see the hydraulic system/tank row for capacity and fluid.Same fluid as the hydraulic system (common tank) - see hydraulic system/tank row.
Final drive, each side9.5 L (2.5 US gal / 2.1 Imp gal) each side on the original D4K; 10.0 L (2.6 US gal / 2.2 Imp gal) each side on the D4K2. Same for XL and LGP undercarriage. Check with the final drive's oil-level mark held horizontal; oil should sit level with the bottom of the fill-plug threads. On severe slopes the final drive oil quantity can be increased up to 10 percent for the duration of that work; drain the extra oil back out once slope work is finished.Cat FDAO Synthetic, Cat FDAO, or a commercial FD-1 gear oil for gear/bearing life where the compartment has no clutch or brake material; Cat TDTO, Cat TDTO Cold Weather, Cat TDTO-TMS, or a commercial TO-4 oil wherever the compartment contains friction material. By viscosity and climate for moderate or intermittent duty: SAE 60 for -7 to 50 degrees C (19 to 122 degrees F); SAE 50 for -15 to 32 degrees C (5 to 90 degrees F); SAE 30 for -25 to 15 degrees C (-13 to 59 degrees F); Cat TDTO-TMS for -35 to 15 degrees C (-31 to 59 degrees F). For severe or continuous multi-shift duty the same grades are rated colder. Warm the final drives up for a few minutes at partial throttle before production work in severe or continuous service.
Hydraulic system / tankTank refill level 60 L (15.8 US gal / 13.2 Imp gal); total system oil including lines, filters, and cylinders is 84 L (22.2 US gal / 18.4 Imp gal). Same on both generations. Maintain the sight-gauge level above the add mark; check with the machine on level ground.Cat HYDO Advanced 10 (SAE 10W) or Cat HYDO Advanced 30 (SAE 30) preferred, giving a longer drain interval than second-choice oils; Cat BIO HYDO Advanced (ISO 46 multi-grade) is also a preferred choice where a biodegradable fluid is wanted. Second-choice oils: Cat MTO, Cat DEO / DEO-ULS, Cat TDTO, Cat TDTO Cold Weather, Cat TDTO-TMS, Cat DEO-ULS Cold Weather. By viscosity and climate: HYDO Advanced 10 / TDTO SAE 10W for -20 to 40 degrees C (-4 to 104 degrees F); HYDO Advanced 30 / TDTO SAE 30 for 0 to 50 degrees C (32 to 122 degrees F); BIO HYDO Advanced ISO 46 for -30 to 45 degrees C (-22 to 113 degrees F); MTO / DEO-ULS / DEO SAE 10W-30 for -20 to 40 degrees C (-4 to 104 degrees F); DEO-ULS / DEO SAE 15W-40 for -15 to 50 degrees C (5 to 122 degrees F); TDTO-TMS multi-grade for -15 to 50 degrees C (5 to 122 degrees F); DEO-ULS Cold Weather SAE 0W-40 and TDTO Cold Weather SAE 0W-20 both for -40 to 40 degrees C (-40 to 104 degrees F). Standard hydraulic oil drain interval is 2000 hours (1 year); using Cat HYDO Advanced fluid and following the filter/sampling schedule extends this to 3000 hours, and oil analysis can extend it further.
Pivot shaft / blade C-frame pivotNot a separate oil-filled compartment on this machine. The blade C-frame pivot, blade pivots, end bearings, and winch rollers/drum are grease-lubricated through fittings rather than an oil sump.See grease specification row for grease type and temperature range. Each pin joint should be flushed through with fresh grease at service - leftover old grease at a joint can lead to joint failure.
Grease specificationNot applicable (grease-fitting points, not a refill quantity).By ambient temperature: Cat Advanced 3Moly, NLGI Grade 2, for -20 to 40 degrees C (-4 to 104 degrees F); Cat Ultra 5Moly NLGI Grade 2 for -30 to 50 degrees C (-22 to 122 degrees F), NLGI Grade 1 for -35 to 40 degrees C (-31 to 104 degrees F), or NLGI Grade 0 for -40 to 35 degrees C (-40 to 95 degrees F); Cat Arctic Platinum NLGI Grade 0 for -50 to 20 degrees C (-58 to 68 degrees F) in extreme cold; Cat Desert Gold NLGI Grade 2 for -20 to 60 degrees C (-4 to 140 degrees F) in hot climates. A non-Cat grease may be substituted only if the supplier certifies it is compatible with Cat grease.

Capacities are refill values from factory literature — always fill to the dipstick/sight gauge, not the number.

Caterpillar D4K XL maintenance schedule

Service intervalTasks
Every 50 h
  • Check engine oil level before each startup; keep it between the low and full marks with the machine stopped.
  • Check coolant level in the expansion tank and top off between the min and max marks.
  • Confirm the backup alarm and instrument-cluster self-test at every startup.
  • Clean or replace the cab fresh-air filter weekly, more often in dusty conditions.
  • Check track sag and adjust tension; listen for dry, squealing pins and bushings.
  • Grease blade angle/tilt hinge pins and ripper linkage points.
Every 250 h
  • Inspect the serpentine belt for cracking and wear; check deflection and replace if out of spec.
  • Pull an engine oil sample at the sampling valve for trend analysis.
  • Drain and refill both final drive housings with fresh gear oil.
  • Drain accumulated water and sediment from the fuel tank.
  • Inspect both track roller frames for cracks.
  • Check winch oil level, if equipped, and top off as needed.
Every 500 h
  • Change engine oil and filter; hold to 250-hour changes if duty cycle or oil grade falls outside factory limits.
  • Replace the fuel system secondary filter.
  • Drain and replace the fuel water separator bowl.
Every 1,000 h
  • Inspect and tighten battery retainers; clean terminals and coat with dielectric grease.
  • Check engine valve lash against service-manual spec; leave adjustment to a qualified technician.
  • Replace both hydraulic system filter elements and check oil level at the sight gauge.
  • Inspect the ROPS structure for loose or damaged mounting bolts; replace with Cat-spec hardware only, never weld a repair.
  • Replace the winch oil filter, if equipped.
Every 2,000 h
  • Pull a coolant sample unless running factory extended-life coolant.
  • Change final drive oil in both final drives.
  • Change hydraulic system oil; this extends to 3000 hours only when running the approved long-life hydraulic oil.
  • Change winch oil and clean the winch vent plug, if equipped.
Every 3,000 h
  • Pull a coolant sample from the expansion tank.
  • Clean or replace the primary engine air filter element.
  • Replace the secondary engine air filter element and inspect the inlet housing gasket.

Servicing the D4K XL beyond the schedule

Predictive Maintenance & Fluid Analysis

Pull oil samples from the C4.4 ACERT engine at every 250-hour service and track trends, not single readings; turbocharged four-cylinders show bearing and injector wear early in iron counts. Sample hydraulic oil and both final drive housings at each fluid change; the Hystat dual-path drive circulates hydraulic fluid through the same reservoir that powers steering, so contamination shows up as sluggish counter-rotation before it shows up as a fault code. Pull coolant samples annually unless running factory ELC.

Corrective & Common Repairs

Dry, squealing track pins and bushings are the most common field complaint on D4K XL undercarriages; catch them during the weekly track-sag check before a joint seizes and chews a sprocket. On SystemOne-equipped machines, watch idler bearing block shims at each quarter-life wear mark rather than waiting for a full bushing turn. Hystat steering that pulls to one side under load usually traces to a contaminated hydraulic filter or a worn charge pump, not the final drive.

Overhaul & Rebuild Points

Final drives and the sealed-and-lubricated (or SystemOne) undercarriage are the big-ticket wear items on a D4K XL nearing mid-life; budget for final drive oil analysis and sprocket and bushing inspection well before a full undercarriage rebuild. On the C4.4 ACERT, valve lash adjustment at the 1000-hour checkpoint catches head and injector issues early; skipping it invites a bigger teardown later. VPAT blade cylinders and C-frame pivot pins wear fastest on machines running heavy angle-dozing duty; inspect for play at every major service.

Seasonal & Environment Servicing

Cold-climate D4K XL owners should switch to an arctic-grade engine oil viscosity and verify coolant freeze protection before winter; the C4.4 ACERT's block heater option pays for itself at start-up in sub-zero yards. In dusty or abrasive ground conditions, shorten the cab fresh-air filter and engine air filter primary element checks well below the standard service cycle. Wet or muddy sites accelerate track pin and bushing wear; increase the weekly track-sag and lubrication checks to daily on these jobs.

D4K XL common service parts

Part numberPart
299-8229Filter-FuelCheck fitment →
343-7104Filter As-FuelCheck fitment →
308-7298Filter As-Water Sep & FuelCheck fitment →
289-0600Filter-FuelCheck fitment →
298-4603Filter As-FuelCheck fitment →

Always confirm against your machine's serial number — cross-check any part in Heavy Parts AI before ordering.

D4K XL fault codes & troubleshooting

CodeMeaningLikely causeWhat to do
039 96-03Fuel level sender signal circuit reads voltage above normal, shorted to +battery.Sender signal wire chafed or shorted to a power circuit, corroded connector, or a failed fuel level sending unit.Inspect the fuel sender harness and connector for a short to power, check sender resistance against spec, replace the sender if out of range.
039 133-03Transmission/drive pump pressure control solenoid circuit reads voltage above normal.Solenoid signal wire shorted to +battery, connector corrosion, or an internally shorted solenoid coil.Check the solenoid connector and harness for a short to power, measure coil resistance, replace the solenoid if out of spec.
039 133-05Transmission/drive pump pressure control solenoid circuit reads current below normal, an open circuit.Broken or disconnected wire, corroded or loose connector pins, or an open solenoid coil.Check harness continuity to the solenoid, clean and reseat the connector, replace the solenoid coil if it tests open.
036 168-00Engine ECM system (battery) voltage reads above normal.Charging system overvoltage, faulty voltage regulator or alternator, or a loose battery connection causing voltage spikes.Test charging voltage at the battery with the engine running, inspect alternator output, check battery cable connections.
036 168-01Engine ECM system (battery) voltage reads below normal.Weak or discharged battery, corroded or loose battery cables, or a failing alternator/charging circuit.Load-test the battery, clean and tighten cable connections, verify alternator charge output.
036 110-00Engine coolant temperature reads above the normal operating threshold.Low coolant level, restricted radiator core, slipping or failed cooling fan drive, or a stuck thermostat.Check coolant level and look for leaks, clean debris from the radiator core, verify fan drive and thermostat operation.
E360Low engine oil pressure event; actual measured oil pressure is below the safe threshold for engine speed.Low oil level, worn oil pump, plugged oil filter, or a failed oil pressure sensor.Check oil level and condition first, verify actual pressure with a mechanical gauge, inspect the oil filter before condemning the pump.
E361High engine coolant temperature event; coolant temperature is above the trip point and can trigger derate or shutdown.Low coolant, restricted airflow through the radiator, worn fan belt, or contaminated coolant.Check coolant level and radiator condition, verify fan belt tension and fan operation, sample coolant for contamination.

Codes and remedies are general guidance for this model family — always confirm with diagnostic tooling and your dealer before major repairs.

D4K XL attachments & work tools

Blades

The D4K XL (Tier 3 K-family, roughly 2007-2017, Cat C4.4 ACERT engine) is offered with a semi-U (SU) push-arm blade for straight dozing/penetration and a 6-way VPAT (variable pitch, angle, tilt) blade for finish grading, ditching, windrowing and light land clearing. Spec sheets list the fitted blade at roughly 2.80 m width (9.2 ft), about 1.01 m height (39.8 in), around 1.99 m3 capacity (2.6 cu yd), with 25 degrees of angle each direction - treat these as representative for the standard blade rather than split by SU vs VPAT, since public spec sheets do not break the dimensions out per blade type. "XL" on this model denotes the extra-long track/undercarriage option (vs LGP), not a blade designation.

Rippers

Factory rear work tool is a parallelogram-linkage ripper with a multi-shank beam operated by two hydraulic cylinders, giving good penetration and a tight turning radius for this size class; it needs an auxiliary/rear hydraulic valve section that is not part of the base machine circuit. Single-shank rippers exist as a category for larger dozer classes, but sources do not confirm a factory single-shank option specifically for the D4K XL - treat the multi-shank parallelogram unit as the standard fit for this model.

Winches

Two distinct winch paths show up in sources: Cat's own K-family literature describes a hydrostatic winch work tool with infinitely variable drum speed and pull (no fixed low/high-speed compromise), and for the following D4K2 generation a Cat retrieval winch is documented at about 14,583 kg (32,150 lb) line pull, run off the rear (4th-valve) auxiliary circuit with an integral drawbar - figures may differ for the original D4K XL, so treat this as a generation-adjacent reference point. Separately, a hydraulic winch commonly fitted across the D3K/D4K/D5K class is rated up to about 18,144 kg (40,000 lb) peak line pull with a 2-speed motor, and is offered with a bolt-on drawbar or an extended heavy-duty drawbar.

Drawbars/Counterweights

A rear drawbar is typically integral to the winch mounting, whether the factory retrieval winch or a compatible hydraulic winch is fitted, since the winch occupies the same rear frame position as the ripper. Dedicated factory counterweight/ballast kits for this small-dozer class are not clearly documented in public spec sheets - verify availability and any capacity effect with your dealer before ordering rather than assuming loader-style ballast kits apply.

Cab/ROPS guarding (forestry/waste)

Cat's own product material for the K-family describes a forestry blade option with added guarding to shed debris and protect the blade/push arms, plus 360-degree guarding around the cab and a heavy-duty rear tank guard for brush/debris environments. There is no dedicated "Waste Handler" spec at this size class (that designation is reserved for larger dozers); bolt-on screen/guard kits for this class typically cover side screens, a rear screen, door screens and a roof screen over the standard ROPS/FOPS cab, sized for forestry and light demolition debris rather than heavy waste-pit duty.

Hydraulic arrangement (front/rear tools)

The base machine circuit runs blade lift/tilt; a VPAT blade needs extra hydraulic function circuits (for pitch and independent angle) beyond what a simpler SU blade requires, so VPAT-equipped units carry additional valve sections up front. At the rear, the ripper and an optional winch share the same auxiliary (rear/4th-valve) circuit and mounting frame - fitting a winch generally means the ripper is not mounted at the same time, since both tools use that shared rear hydraulic and structural interface.

All D4K XL assemblies by section

Every catalogued assembly group for the Caterpillar D4K XL. Open an assembly to preview the parts inside — full OEM part numbers are available in Heavy Parts AI.

Air Inlet And Exhaust System
244-7427 Air Cleaner Gp
24***27Air Cleaner Group1
27***38Protection Group-Fuel System; (Line, Low Pressure)1
29***29Filter-Fuel; (Ultra High Efficiency)(Secondary)1
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325-7267 Arrestor Gp-Spark -Fire Plow
30***98Filter As-Water Sep & Fuel1
30***76Filter Group-Water Sep & Fuel1
31***12Bowl As1
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254-8954 Muffler Gp
25***54Muffler Group1
27***38Protection Group-Fuel System; (Line, Low Pressure)1
28***00Filter-Fuel; (Ultra High Efficiency)1
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304-3657 Turbocharger Gp
27***38Protection Group-Fuel System; (Line, Low Pressure)1
29***29Filter-Fuel; (Ultra High Efficiency)(Secondary)1
30***57Turbocharger Group1
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Basic Engine
303-5775 Adapter Gp-Auxiliary Drive
10***73Seal-O-Ring1
10***75Bearing1
10***76Clip1
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261-0369 Belt Tensioner Gp
26***69Belt Tensioner Group1
26***71Plate1
26***06Belt Tensioner1
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260-9295 Belt Tensioner Gp
26***95Belt Tensioner Group1
26***76Belt Tensioner1
26***23Plate1
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260-9294 Belt Tensioner Gp -Fan
26***94Belt Tensioner Group; -Fan-Erops1
26***76Belt Tensioner1
26***23Plate1
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304-3648 Camshaft Gp
1B***36Key-Woodruff1
27***26Rod-Push8
30***48Camshaft Group1
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304-3658 Cover Gp-Cylinder Head
11***22Bolt; (M8x16-mm)4
11***79Gasket2
12***15Bolt; (M8x16x1.25-mm)4
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320-2369 Cover Gp-Valve Mechanism
11***30Receptacle As-Connector; (4-Pin)1
16***65Spring; (Crankcase Breather Hose)1
18***39Pin-Connector; (14-Ga To 18-Ga)(For 14 Gauge Wire)4
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330-1736 Crankshaft Gp
20***19Bolt; (M8x1.25x16-mm)10
23***49Housing As1
33***36Crankshaft Group1
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364-2829 Crankshaft Gp
19***51Seal-O-Ring1
23***22Plug1
27***16Plug-Core4
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304-3642 Crankshaft Gp
03***90Washer-Thrust; (Standard-Upper)(Upper)2
03***91Washer-Thrust; (Standard-Lower)(Lower)2
06***73Washer-Thrush (Upper) .18mm (.007in)0
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359-0716 Crankshaft Gp
03***63Plug1
03***68Bolt; (5/8-18x3.75-In)10
06***02Dowel10
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304-3641 Cylinder Block Gp
22***01Bolt; (M15x1.5x137-mm)10
29***26Cylinder Head As1
30***41Cylinder Block Group1
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330-4789 Cylinder Block Gp
10***41Bolt; (M12x1.75x25-mm)3
28***48Pulley Group-Engine1
30***57Hub1
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298-4526 Cylinder Head As
11***59Bolt; (M10x1.5x35-mm)8
25***37Plate1
29***26Cylinder Head As1
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304-3645 Cylinder Head Gp
03***87Ring-Starting Motor; (126-Teeth)1
0S***03Bolt,Machine Fuel Pump Drive Gear Mounting6
10***31Flywheel As1
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306-8855 Drive Gp-Auxiliary
06***79Dowel1
10***51Bolt; (M8x1.25x65-mm)5
10***30Bolt; (M10x1.5x20-mm)1
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303-5770 Drive Gp-Fan
10***17Plug3
11***63Bolt; (M8x1.25x12-mm)2
12***83Bolt; (M10x1.5x30-mm)6
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304-3654 Flywheel Gp
27***51Plate-Lifting1
29***04Plate-Lifting1
30***54Flywheel Group1
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298-5110 Gear Gp-Front
10***87Plug6
19***36Stud8
19***21Nut; (M12x1.75-Thd)8
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303-5767 Housing Gp-Flywheel
06***13Gasket1
12***15Bolt; (M8x16x1.25-mm)1
15***30Bolt; (M8x1.25x120-mm)4
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298-5127 Lifting Gp-Engine
12***36Ring-Retaining2
22***38Bushing1
22***39Bolt-Special; (Connecting Rod)2
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304-3661 Mounting Gp-Engine
19***51Seal-O-Ring1
23***22Plug1
30***61Mounting Group-Engine1
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304-3656 Pan Gp-Oil
13***56Elbow1
2B***58Plug--To Block Upper Front Air Manifold1
30***56Pan Group-Oil1
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304-3643 Piston & Rod Gp
27***00Plug-Shaft End2
27***01Circlip1
27***06Spring-Shaft3
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298-5129 Plug Gp-Cylinder Head
11***99Gasket; (Air Conditioner Control)1
25***31Hood & Guard Group; -Sound Suppression1
29***29Plug Group-Cylinder Head1
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304-3663 Plug Gp-Engine
11***99Gasket; (Air Conditioner Control)1
19***86Film; (Safety) (To Right And Left Of Fuel Tank)2
24***98Liner Group-Sound Suppression1
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360-7345 Pulley Gp-Crankshaft
24***98Liner Group-Sound Suppression1
25***52Hood & Guard Group; -Sound Suppression1
31***70Switch As-Rocker; (Engine Speed Control)1
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298-4533 Rocker Arm Gp
11***61Seal Kit; (Includes Seals, Thrust Ring, Stem And Connectors)1
20***71Valve Group-Manual; (Coupler Pin, Lift Arm Lwr Cont)1
20***73Valve Group-Manual; (Coupler Pin, Lift Arm Lwr Cont)1
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244-7431 Support Gp-Engine & Xmsn
24***31Support Group-Engine & Xmsn1
29***33Rocker Arm Group1
33***97Link8
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244-7491 Suppression Ar-Sound
24***91Suppression Ar-Sound1
7W***26Filter As-Engine Oil1
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244-7488 Suppression Ar-Sound
15***55Adapter1
24***88Suppression Ar-Sound1
3K***60Seal Pilot Manifold On; Seal To Boom Check Valve Drain1
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244-7479 Suppression Ar-Sound
11***04Seal-O-Ring1
13***88Cap-Oil Filler; (Engine)1
24***79Suppression Ar-Sound1
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112-1817 Valve Gp-Manual -Fire Plow
10***61Bolt; (M10x1.50x50-mm)5
11***17Valve Group-Manual; -Ride Control-Hydraulic Lockout1
22***29Pump As-Engine Oil1
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304-3647 Valve Mechanism Gp
03***63Plug1
21***33Valve As-Fluid Sampling1
30***47Screw, Hexagon Flange Head Cap Screw, Valve Mechanism Group1
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Cooling System
301-8243 Connection Gp-Water
20***54Spacer-Fan1
30***43Connection Group-Water1
31***41Fan As-Blower; (6-Blades)1
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334-2314 Connection Gp-Water
19***11Insulation; (66-cm Each)0
25***43Hose-Radiator; (Upper)1
25***44Hose-Radiator; (Lower)1
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298-5099 Cooler Gp-Engine Oil
11***29Bolt; (M8x1.25x75-mm)7
22***38Seal-O-Ring1
22***19Gasket1
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353-7717 Cooler Gp-Engine Oil
06***69Stem1
14***29Seal1
19***77Washer-Hard; (11x25x10-mm Thk)4
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244-7428 Fan Gp-Blower
24***28Fan Group-Blower1
24***85Tank Group-Expansion; (Coolant)1
25***27Cap As-Coolant Tank; (Radiator)1
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329-5632 Lines Gp-Coolant
12***71Clamp-Hose3
15***86Clamp-Hose1
22***76Air Cleaner Group1
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298-5105 Pump Gp-Water
09***85Locknut; (M16x2-Thd)2
29***05Pump Group-Water1
2Y***29Nut-Hard; (M10 X 1.5)1
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244-7430 Radiator & Hyd Oil Cooler Gp
03***47Ferrule2
03***91Nut1
03***14Nut; (7/16-In)1
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254-3256 Tank Gp-Coolant
22***78Seal-Ring; (Fuel And Water Sep Filter)1
25***56Tank Group-Coolant1
30***98Filter As-Water Sep & Fuel1
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Electrical And Starting System
303-5774 Alternator Gp-Charging
12***74Screw-Pan Head; (8-32x9.52-mm)1
13***26Washer; (4.52x8.28x0.76-mm Thk)1
28***33Control Group-Unprogrammed; (Product Link 300)1
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317-9776 Alternator Gp-Charging
09***36Terminal-Blade; (18-Ga To 22-Ga)15
09***34Terminal-Blade; (18-Ga To 22-Ga)2
10***41Terminal-Receptacle; (18-Ga To 20-Ga)4
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245-6017 Battery & Wiring Gp
24***17Battery & Wiring Group1
29***62Plug-Pipe1
29***80Glow Plug; (12-Volt)4
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292-0294 Cable As-Coiled -Laser Receiver-Accugrade
25***30Cover Group-Cab; -Orops1
27***46Control Group-Joystick; -Bulldozer, Rh1
29***94Cable As-Coiled; -Laser Receiver-Accugrade1
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304-3650 Control Gp-Engine Electronic
25***31Cover Group-Cab; -Erops1
27***46Control Group-Joystick; -Bulldozer, Rh1
30***50Piston Insert, Control Group-Engine Electronic1
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239-9954 Control Gp-Unprogrammed -Product Link 300
23***54Control Group-Unprogrammed; (Product Link 300)(Product Link 321sr)1
24***40Wiring Group-Grade Control; -Base1
25***30Cover Group-Cab; -Orops1
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318-6107 Conversion Gp-Electrical -Fire Plow
24***40Wiring Group-Grade Control; -Base1
25***31Cover Group-Cab; -Erops1
27***45Control Group-Joystick; -Grade Control, Rh1
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303-4685 Electronics Gp-Implement -Accugrade
24***29Wiring Group-Grade Control; -Full1
25***60Mounting Group-Grade Control1
27***45Control Group-Joystick; -Grade Control, Rh1
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244-7387 Electronics Gp-Machine
24***87Electronics Group-Machine1
24***29Wiring Group-Grade Control; -Full1
25***60Mounting Group-Grade Control1
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284-0825 Electronics Gp-Machine -Power Train
22***33Mast Group; -Laser Receiver1
23***70Mounting Group-Receiver; -Mast1
23***50Receiver Group-Laser; -Single1
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304-3660 Glow Plug Gp
22***33Mast Group; -Laser Receiver2
23***70Mounting Group-Receiver; -Mast2
23***87Case-Plastic1
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296-5756 Grade Control Ar -Erops
10***01Kit; (Receptacle) (12-Pin) (Includes Receptacle As & Wedge)1
12***74Tube-Heat Shrink; (5.72-mm Dia)(950-cm)0
12***66Socket-Connector; (14-Ga To 18-Ga)13
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296-5753 Grade Control Ar -Orops
24***00Mast As; (Satellite Receiver)1
27***46Sensor As-Position; (As400tc)(Angle)1
28***34Display Group-Monitor; -Cd700c1
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296-5754 Grade Control Ar -Erops
11***62Tube-Heat Shrink; (10.85-mm Dia)(299-cm)0
12***74Tube-Heat Shrink; (5.72-mm Dia)(950-cm)0
12***75Tube-Heat Shrink; (7.44-mm Dia)(560-cm)0
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296-5752 Grade Control Ar -Erops
24***00Mast As; (Satellite Receiver)2
28***34Display Group-Monitor; -Cd700c1
28***24Display Group-Monitor; -Light Bar3
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296-5751 Grade Control Ar -Orops
25***36Cable-Coiled; (Receiver)2
28***34Display Group-Monitor; -Cd700c1
28***37Receiver Group-Satellite; -Dual Gps, Ms980-Accugrade1
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296-5755 Grade Control Ar -Orops
13***65Receptacle As1
13***13Kit-Seal; (Water Jacket)1
13***17Cap As-Dust1
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292-0293 Grade Control Ar-Laser -Accugrade, Single
10***01Kit; (Receptacle) (12-Pin) (Includes Receptacle As & Wedge)1
12***74Tube-Heat Shrink; (5.72-mm Dia)(950-cm)0
12***66Socket-Connector; (14-Ga To 18-Ga)13
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292-0312 Grade Control Ar-Laser -Accugrade, Dual
10***05Cap-Receptacle1
10***01Kit; (Receptacle) (12-Pin) (Includes Receptacle As & Wedge)1
10***02Kit-Receptacle; (2-Pin)(Engine Sensor Wiring Harness)1
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292-0280 Grade Control Ar-Satellite -Accugrade, Single Gnss
16***56Bracket; (Lamp Retaining)1
20***11Lens As1
24***24Body As; (Floodlight)1
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290-5571 Grade Control Ar-Satellite -Accugrade, Dual Gnss
15***54Lens As; (Flood)1
15***55Body As1
29***71Grade Control Ar-Satellite; -Accugrade, Dual Gnss1
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290-5570 Grade Control Ar-Satellite -Accugrade, Dual Gps
10***02Kit-Receptacle; (2-Pin)(Engine Sensor Wiring Harness)1
10***06Receptacle Kit; (Includes Wedge And Receptacle Assem.)1
15***65Kit-Connecting Plug; (8-Pin)(Electronic Control Channel)1
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245-6040 Harness As-Engine
16***56Bracket; (Lamp Retaining)1
20***14Lens As; (Floodlight)1
24***24Body As; (Floodlight)1
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253-5391 Heater Gp-Jacket Water
24***01Lamp Group-Flood2
24***02Lamp Group-Flood; -Canopy4
25***91Heater Group-Jacket Water1
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249-9068 Installation Gp-Communication -Product Link 121sr
15***86Lamp Group-Flood2
24***02Lamp Group-Flood; -Canopy2
24***68Installation Group-Communication; -Product Link 121sr1
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249-9029 Installation Gp-Communication -Product Link 321sr
15***86Lamp Group-Flood2
24***02Lamp Group-Flood; -Canopy1
24***29Installation Group-Communication; -Product Link 321sr1
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245-6028 Installation Gp-Security
24***47Kit-Adapter; (Mast)(Grade Control)1
24***28Installation Group-Security1
25***79Screw As1
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240-0101 Lamp Gp-Flood
17***31Screw; (Truss Head) (M4x0.7x12mm)2
19***06Screw-Truss Head; (M5x0.8x16-mm)2
24***01Lamp Group-Flood1
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240-0102 Lamp Gp-Flood
10***91Screw; (Flat Head) (No.6-20x0.5in)6
14***20Bolt-Socket Head; (M6x1x75-mm)2
23***08Plug As-Connector; (4-Pin)3
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154-7986 Lamp Gp-Flood
15***86Lamp Group-Flood1
24***00Mast As; (Satellite Receiver)1
29***03Mounting Group-Mast; -Satellite Receiver1
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269-7696 Lighting Gp-Flood
10***02Kit-Receptacle; (2-Pin)(Engine Sensor Wiring Harness)1
11***00Terminal-Bus8
11***90Fuse; (10 Amp)8
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269-7695 Lighting Gp-Flood
10***02Kit-Receptacle; (2-Pin)(Engine Sensor Wiring Harness)1
10***43Seal; (32-cm Each)0
11***00Terminal-Bus8
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292-0290 Mast Gp -Satellite Receiver
27***64Cable-Coiled; (Laser Receiver)1
29***90Mast Group; -Satellite Receiver1
34***59Receiver As-Laser1
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226-2333 Mast Gp -Laser Receiver
22***33Mast Group; -Laser Receiver1
25***29Case-Carrying1
27***64Cable-Coiled; (Laser Receiver)1
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255-4260 Mounting Gp-Grade Control
11***93Lockwasher5
24***17Receiver As-Satellite; (Gps, Ms980)2
25***28Mounting Group-Receiver; -Target2
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292-0296 Mounting Gp-Grade Control
11***93Lockwasher5
25***28Mounting Group-Receiver; -Target2
25***39Case-Plastic; (Receiver)1
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234-9970 Mounting Gp-Receiver -Mast
11***93Lockwasher5
23***70Mounting Group-Receiver; -Mast1
25***28Mounting Group-Receiver; -Target1
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249-9023 Panel Gp-Fuse
1H***44Lockwasher (Bracket To Cab)2
24***23Panel Group-Fuse1
26***11Seal1
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263-9088 Radio Gp-Communication -Product Link 121sr
10***03Kit; (Receptacle) (3-Pin) (Includes Receptacle As & Wedge)1
26***88Radio Group-Communication; -Product Link 121sr1
3E***71Wedge; (Receptacle Lock) (3 Pin)1
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292-0285 Receiver Gp-Laser -Accugrade, Dual
10***05Kit-Receptacle; (6-Pin)(Display Monitor Harness)1
18***35Pin-Connector; (16-Ga To 18-Ga)4
28***08Shaft-Adapter1
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239-9950 Receiver Gp-Laser -Single
10***03Kit; (Receptacle) (3-Pin) (Includes Receptacle As & Wedge)1
18***39Pin-Connector; (14-Ga To 18-Ga)(For 14 Gauge Wire)3
23***50Receiver Group-Laser; -Single1
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292-0292 Receiver Gp-Satellite -Accugrade, Single Gnss, Ms992
29***92Receiver Group-Satellite; -Accugrade, Single Gnss, Ms9921
6J***45Seal (.674" Inside Diameter)1
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286-0137 Receiver Gp-Satellite -Dual Gps, Ms980
15***60Kit-Connecting Plug; (3-Pin)(Engine Sensor Wiring Harness)1
15***76Wedge-Plug Lock; (3-Pin)1
18***40Socket-Connector; (14-Ga To 18-Ga)(14-Ga To 18-Ga)3
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292-0291 Receiver Gp-Satellite -Accugrade, Dual Gnss, Ms992
29***91Receiver Group-Satellite; -Accugrade, Dual Gnss, Ms9921
6J***45Seal (.674" Inside Diameter)1
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275-0490 Relay Gp -Starting Aid Heater
23***54Control Group-Unprogrammed; (Product Link 300)(Product Link 321sr)1
26***98Software Group-Communication; (Product Link 300)1
27***90Relay Group; -Starting Aid Heater1
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266-1470 Sensor Gp-Position
12***99Stud; (M10x1.5x50-mm)3
26***70Sensor Group-Position; -Decelerator Pedal1
30***15Starting Motor Group-Electric1
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224-5530 Sensor Gp-Position -Governor, Brake Pedal
10***02Kit-Receptacle; (2-Pin)(Engine Sensor Wiring Harness)1
18***35Pin-Connector; (16-Ga To 18-Ga)2
21***58Conduit-Flexible; (227-cm)0
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284-8207 Sensor Gp-Position
28***07Sensor Group-Position1
2H***22Lockwasher2
6F***45Nut-Full; (3/8-24-Thd)2
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214-6863 Sensor Gp-Pressure
10***05Kit-Receptacle; (6-Pin)(Display Monitor Harness)1
10***10Seal1
14***36Pin-Connector; (14-Ga To 18-Ga)5
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319-6491 Sensor Gp-Speed
10***02Kit-Receptacle; (2-Pin)(Engine Sensor Wiring Harness)1
17***50Alarm As; (Backup)1
18***35Pin-Connector; (16-Ga To 18-Ga)2
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183-4584 Sensor Gp-Speed
10***02Kit-Receptacle; (2-Pin)(Engine Sensor Wiring Harness)1
12***23Seal; (32-cm)0
18***84Sensor Group-Speed1
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268-4699 Service Gp-Communication -Product Link 300
10***74Seal-Connector2
10***02Kit-Receptacle; (2-Pin)(Engine Sensor Wiring Harness)1
12***74Tube-Heat Shrink; (5.72-mm Dia)(950-cm)0
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245-6026 Starting Aid Gp-Ether
08***77Lamp Group-Dome; (12-Volt)1
09***36Terminal-Blade; (18-Ga To 22-Ga)66
10***01Kit; (Receptacle) (12-Pin) (Includes Receptacle As & Wedge)1
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304-3655 Starting Motor Gp-Electric
08***77Lamp Group-Dome; (12-Volt)1
09***36Terminal-Blade; (18-Ga To 22-Ga)80
10***01Kit; (Receptacle) (12-Pin) (Includes Receptacle As & Wedge)1
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7n-0718 Switch Gp-Disconnect -Battery
08***77Lamp Group-Dome; (12-Volt)1
09***36Terminal-Blade; (18-Ga To 22-Ga)79
09***34Terminal-Blade; (18-Ga To 22-Ga)2
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106-0107 Switch Gp-Rotary -Throttle Position
09***36Terminal-Blade; (18-Ga To 22-Ga)40
10***01Kit; (Receptacle) (12-Pin) (Includes Receptacle As & Wedge)1
10***02Kit-Receptacle; (2-Pin)(Engine Sensor Wiring Harness)1
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318-8136 Warning Gp-Backup
09***36Terminal-Blade; (18-Ga To 22-Ga)54
10***01Kit; (Receptacle) (12-Pin) (Includes Receptacle As & Wedge)1
10***02Kit-Receptacle; (2-Pin)(Engine Sensor Wiring Harness)1
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318-8135 Warning Gp-Backup
09***36Terminal-Blade; (18-Ga To 22-Ga)54
10***01Kit; (Receptacle) (12-Pin) (Includes Receptacle As & Wedge)1
10***02Kit-Receptacle; (2-Pin)(Engine Sensor Wiring Harness)1
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245-6024 Wiring Gp-Air Conditioner
10***01Kit; (Receptacle) (12-Pin) (Includes Receptacle As & Wedge)1
11***46Locknut; (M6x1-Thd)4
12***74Tube-Heat Shrink; (5.72-mm Dia)(950-cm)0
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245-6021 Wiring Gp-Cab -Erops
09***81Spacer; (10.5x20x10.0mm Thk)2
10***02Kit-Receptacle; (2-Pin)(Engine Sensor Wiring Harness)1
11***15Relay As; (12-Volt)(Junction Box)1
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245-6047 Wiring Gp-Cab -Orops
03***18Screw-Machine12
09***62Washer; (Hard) (3.4x7x0.8mm Thk)12
10***01Kit; (Receptacle) (12-Pin) (Includes Receptacle As & Wedge)2
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245-6027 Wiring Gp-Electrohydraulic
10***01Kit; (Receptacle) (12-Pin) (Includes Receptacle As & Wedge)2
10***06Receptacle Kit; (Includes Wedge And Receptacle Assem.)1
12***74Tube-Heat Shrink; (5.72-mm Dia)(950-cm)0
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299-5092 Wiring Gp-Engine
10***01Kit; (Receptacle) (12-Pin) (Includes Receptacle As & Wedge)5
10***02Kit-Receptacle; (2-Pin)(Engine Sensor Wiring Harness)2
10***03Kit; (Receptacle) (3-Pin) (Includes Receptacle As & Wedge)1
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245-6019 Wiring Gp-Engine
10***01Kit; (Receptacle) (12-Pin) (Includes Receptacle As & Wedge)2
10***06Receptacle Kit; (Includes Wedge And Receptacle Assem.)1
12***74Tube-Heat Shrink; (5.72-mm Dia)(950-cm)0
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245-6029 Wiring Gp-Grade Control -Full
09***58Bolt; (Socket Head) (M10x1.5x70mm)2
24***29Wiring Group-Grade Control; -Full1
24***56Shaft1
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249-9040 Wiring Gp-Grade Control -Base
24***11Lines Group-Hydrostatic1
24***40Wiring Group-Grade Control; -Base1
25***77Pump Group-Piston; -Hydrostatic Drive1
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245-6020 Wiring Gp-Platform
09***11Washer; (47.3x76x1-mm Thk)6
09***16Bearing As; (Roller)3
09***28Washer; (53x84x1-mm Thk)6
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Engine Arrangement
254-9233 Engine Ar-Primary
25***33Engine Ar-Primary1
29***99Cooler Group-Engine Oil1
29***00Filter Group-Engine Oil1
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244-7386 Installation Ar-Engine
24***86Installation Ar-Engine1
24***27Air Cleaner Group1
24***28Fan Group-Blower1
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Frame And Body
244-7516 Counterweight Gp-Front
24***16Counterweight Group-Front1
32***39Grill As1
7X***29Washer; (11x25x3-mm Thk)6
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262-5868 Cover Gp-Access
26***68Cover Group-Access1
32***48Grill As1
7X***29Washer; (11x25x3-mm Thk)6
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244-7434 Drawbar Gp
11***69Bolt; (M16x2x300-mm)1
24***34Drawbar Group1
25***45Plug1
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323-7320 Enclosure Gp-Platform -Fire Plow
31***46Plate As; (Front)1
31***63Plate-Cover2
31***64Spacer; (13.9x21.3x15-mm Thk)16
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244-7512 Enclosure Gp-Platform
21***41Spacer; (13.9x21.3x8-mm Thk)8
24***12Enclosure Group-Platform1
25***58Plate-Cover2
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244-7399 Frame Gp
11***84Bumper6
12***80Shield-Striker2
14***76Cylinder As-Gas2
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325-6507 Frame Gp
17***93Bumper; (Rubber)4
18***53Latch As-Door; (Rotary)(Rh)1
18***54Latch As-Door; (Rotary)(Rh)1
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244-7398 Frame Gp
24***98Frame Group1
31***46Plate As; (Front)1
31***63Plate-Cover2
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325-6506 Frame Gp
09***07Nut; (M12x1.75-Thd)4
28***70Knob4
32***06Frame Group1
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244-7437 Grill Ar-Radiator -Heavy-Duty
24***37Grill Ar-Radiator; -Heavy-Duty1
25***60Guard As1
25***45Plug1
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244-7436 Grill Ar-Radiator -Standard
24***36Grill Ar-Radiator; -Standard1
25***19Plate1
5P***76Washer Guard To Support Assembly And Guard Assembly8
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307-1593 Grill Gp-Radiator -Fire Plow
15***64Film; (Instruction) (Hydraulic Oil) (On Forward Of And Above The Hydraulic Tank Sight Gage On Tank Surface)1
19***77Washer-Hard; (11x25x10-mm Thk)8
19***78Washer-Hard; (13.5x30x12-mm Thk)7
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322-6482 Guard Gp-Bottom
26***89Bracket As1
30***99Bracket As1
31***29Bracket As1
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322-6483 Guard Gp-Bottom
27***90Plate-Cover1
29***02Drawbar As1
29***03Plate As1
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254-8901 Guard Gp-Bottom
25***95Bracket As1
25***01Guard Group-Bottom1
26***89Bracket As1
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255-4276 Guard Gp-Brush -Open Rops
19***77Washer-Hard; (11x25x10-mm Thk)4
25***61Plate As; (Lh)1
25***33Hood As1
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336-4126 Guard Gp-Brush -Side
30***67Pin4
33***26Guard Group-Brush; -Side1
5D***59Pin Assem.4
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336-4125 Guard Gp-Brush -Front
19***77Washer-Hard; (11x25x10-mm Thk)4
25***61Plate As; (Lh)1
25***53Hood As1
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244-7503 Guard Gp-Front
24***03Guard Group-Front1
26***76Liner1
26***77Liner1
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254-7757 Guard Gp-Radiator
10***71Clevis1
17***84Latch As-Rotary; (Rh)1
17***85Latch As-Rotary; (Rh)1
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311-8644 Guard Gp-Rear
09***85Locknut; (M16x2-Thd)14
21***07Mount4
26***89Support; (Rh)1
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312-1035 Guard Gp-Rear
19***09Valve-Fill; (Grease)1
22***82Seal-Wiper1
23***70Washer-Special2
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244-7433 Hitch Gp-Towing
14***06Plug As1
19***09Valve-Fill; (Grease)1
22***82Seal-Wiper1
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255-1431 Hood & Guard Gp -Sound Suppression
25***31Hood & Guard Group; -Sound Suppression1
29***91Plate As2
30***43Bracket As2
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255-1452 Hood & Guard Gp -Sound Suppression
25***52Hood & Guard Group; -Sound Suppression1
29***91Plate As2
30***39Bracket As2
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325-7266 Latch Gp -Fire Plow
26***25Guard As1
26***37Guard As1
26***55Guard As1
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244-7498 Liner Gp-Sound Suppression
19***78Washer-Hard; (13.5x30x12-mm Thk)8
24***98Liner Group-Sound Suppression1
27***54Guard As2
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262-2923 Screen Gp -Front
19***78Washer-Hard; (13.5x30x12-mm Thk)8
26***23Screen Group; -Front1
28***69Guard As2
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244-7468 Sweep Gp -Rear
24***68Sweep Group; -Rear1
26***25Guard As1
26***37Guard As1
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244-7467 Sweep Gp -Front
24***67Sweep Group; -Front1
31***02Plate2
31***03Plate2
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Fuel System
318-8063 Filter Gp-Fuel
27***39Seal1
28***37Washer1
31***63Filter Group-Fuel1
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334-0808 Filter Gp-Fuel
11***08Clip3
1P***78Clamp; (Hose)8
23***44Elbow; (Swivel)1
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320-1332 Filter Gp-Fuel
27***39Seal1
28***37Washer1
32***32Filter Group-Fuel1
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298-5123 Filter Gp-Primary Fuel
10***30Bolt; (M10x1.5x20-mm)2
12***15Bolt; (M8x16x1.25-mm)4
21***09Fitting; (Quick Disconnect, Female)1
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320-0677 Injector Gp-Fuel
27***38Protection Group-Fuel System; (Line, Low Pressure)1
30***13Tube1
31***63Filter Group-Fuel1
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292-3778 Injector Gp-Fuel
10***41Bolt; (M6x1x10-mm)2
10***16Bolt; (M6x16-mm)4
12***15Bolt; (M8x16x1.25-mm)2
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304-3662 Lines Gp-Fuel
03***17Union2
06***64Fitting-Flared2
06***65Fitting-Brass2
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304-3659 Lines Gp-Fuel
10***41Bolt; (M6x1x10-mm)2
10***16Bolt; (M6x16-mm)3
21***64Bolt-Flange Head; (M12x1.75x16-mm)1
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322-5904 Lines Gp-Fuel -Implement Pump
03***17Union2
06***64Fitting-Flared2
06***65Fitting-Brass2
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322-5900 Lines Gp-Fuel -Low Pressure
03***17Union2
06***64Fitting-Flared2
06***65Fitting-Brass2
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244-7482 Lines Gp-Fuel
24***82Lines Group-Fuel1
27***38Protection Group-Fuel System; (Line, Low Pressure)1
30***13Tube1
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295-9125 Pump & Mtg Gp-Unit Inj Hyd
03***17Union2
06***64Fitting-Flared2
06***65Fitting-Brass2
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304-3649 Pump Gp-Fuel Injection
09***36Screw; (Machine) (M5x0.8x10mm)5
11***10Gasket-Screen; (Hydraulic Tank)1
11***11Cover1
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324-0532 Pump Gp-Fuel Injection
08***39Seal-O-Ring (Id=26.64mm)2
09***22Bolt-Socket Head; (M5x0.8x10-mm)8
12***83Orifice1
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283-2271 Pump Gp-Fuel Injection
03***17Union2
06***64Fitting-Flared2
06***65Fitting-Brass2
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352-6584 Pump Gp-Fuel Injection
10***51Bolt; (M8x1.25x130-mm)1
11***49Nut; (M12-1.75x93-mm-Thd)1
14***83Bolt; (M10x1.5x45-mm)(Starter Motor)2
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358-6633 Rail Gp-Fuel
10***51Bolt; (M8x1.25x130-mm)1
11***49Nut; (M12-1.75x93-mm-Thd)1
14***83Bolt; (M10x1.5x45-mm)(Starter Motor)2
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322-5920 Shutoff Gp-Manual -Fire Plow
09***36Screw; (Machine) (M5x0.8x10mm)5
10***01Kit; (Receptacle) (12-Pin) (Includes Receptacle As & Wedge)1
10***02Kit-Receptacle; (2-Pin)(Engine Sensor Wiring Harness)1
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319-8103 Tank Gp-Fuel -Fire Plow
09***36Screw; (Machine) (M5x0.8x10mm)5
10***01Kit; (Receptacle) (12-Pin) (Includes Receptacle As & Wedge)1
10***05Kit-Receptacle; (6-Pin)(Display Monitor Harness)1
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244-7408 Tank Gp-Fuel
09***36Screw; (Machine) (M5x0.8x10mm)5
10***01Kit; (Receptacle) (12-Pin) (Includes Receptacle As & Wedge)1
10***05Kit-Receptacle; (6-Pin)(Display Monitor Harness)1
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287-1962 Tank Gp-Fuel
09***36Screw; (Machine) (M5x0.8x10mm)5
10***01Kit; (Receptacle) (12-Pin) (Includes Receptacle As & Wedge)1
10***05Kit-Receptacle; (6-Pin)(Display Monitor Harness)1
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301-7890 Valve Gp-Check
30***90Valve Group-Check; -Hydrostatic Drive Motor1
31***63Cable As-Coiled; (Mast)1
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293-5450 Valve Gp-Solenoid -Servo
29***50Valve Group-Solenoid; -Servo1
33***40Control Group-Unprogrammed1
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Hydraulic System
263-3745 Cylinder Gp-Angling
24***52Control Group-Winch1
25***57Valve & Mtg Group-Implement Cont1
25***60Lines Group-Rear Attachment1
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276-4667 Cylinder Gp-Bulldozer Lift -Lh
26***00Lines Group-Angle & Tilt1
26***10Lines Group-Hydraulic1
27***67Cylinder Group-Bulldozer Lift; -Lh1
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263-4068 Cylinder Gp-Bulldozer Lift -Rh
26***68Cylinder Group-Bulldozer Lift; -Rh1
26***00Lines Group-Angle & Tilt1
26***10Lines Group-Hydraulic1
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262-4418 Cylinder Gp-Ripper -Lh
26***18Cylinder Group-Ripper; -Lh1
26***00Lines Group-Angle & Tilt1
26***10Lines Group-Hydraulic1
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262-4415 Cylinder Gp-Ripper -Rh
26***15Cylinder Group-Ripper; -Rh1
26***00Lines Group-Angle & Tilt1
26***10Lines Group-Hydraulic1
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263-5008 Cylinder Gp-Tilt
03***48Clip; (11.11mm .437in Id)2
10***36Clip4
14***18Connector As4
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325-6517 Drive Ar-Pump -Hydraulic
03***48Clip; (11.11mm .437in Id)2
10***36Clip4
14***18Connector As4
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264-4550 Hydraulic Ar -3-Bank
14***15Connector As8
14***40Adapter; (Straight) (-8 Orb X -8 Orfs)2
14***42Connector Group2
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325-6531 Hydraulic Ar -5-Bank
11***08Clip1
14***27Connector Group3
14***36Adapter; (Straight) (-6 Orb X -6 Orfs)1
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264-4552 Hydraulic Ar -4-Bank
16***12Clamp4
26***52Hydraulic Ar; -4-Bank1
28***13Hose As1
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325-6523 Hydraulic Ar -4-Bank
11***37Clip1
14***51Elbow Group1
14***67Elbow Group; (Each Includes)1
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325-6529 Hydraulic Ar -5-Bank
11***08Clip1
14***27Connector Group3
14***36Adapter; (Straight) (-6 Orb X -6 Orfs)1
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244-7385 Hydraulic Ar
13***84Clip4
15***99Hose As1
16***11Clamp4
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325-6526 Hydraulic Ar -4-Bank
09***13Clip2
11***38Clip1
20***81Strap-Cable1
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264-4551 Hydraulic Ar -4-Bank
13***93Hose As1
16***11Clamp2
18***66Hose As1
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320-1704 Lines Gp-Angle & Tilt
11***08Clip1
14***27Connector Group3
14***36Adapter; (Straight) (-6 Orb X -6 Orfs)1
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263-9700 Lines Gp-Angle & Tilt
14***27Connector Group3
14***36Adapter; (Straight) (-6 Orb X -6 Orfs)1
14***47Elbow; (-12 Orb/Orfs)1
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328-8603 Lines Gp-Angle & Tilt
16***20Hose As1
16***11Clamp2
16***12Clamp2
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263-9710 Lines Gp-Hydraulic
14***45Connector As3
14***75Elbow Group2
14***64Valve Group-Check1
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327-8895 Lines Gp-Hydraulic -Lift Cylinder
14***45Connector As3
14***75Elbow Group2
14***64Valve Group-Check1
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325-1324 Lines Gp-Hydraulic
14***45Connector As3
14***75Elbow Group2
14***64Valve Group-Check1
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254-1371 Lines Gp-Pressure Test
14***15Connector As2
14***45Connector As2
14***75Elbow Group2
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328-8600 Lines Gp-Pressure Test
09***35Spacer; (11x25x20-mm Thk)1
10***05Plate1
11***99Hose As1
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325-7275 Lines Gp-Pump -Implement Pump
13***81Kit-Seal; (Gear Pump)1
26***04Pump Group-Gear1
32***75Lines Group-Pump; -Implement Pump1
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276-4680 Lines Gp-Pump
06***45Clip2
09***35Spacer; (11x25x20-mm Thk)1
10***05Plate1
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327-3393 Lines Gp-Pump
27***18Bracket As1
32***93Lines Group-Pump1
5P***16Washer; (Hard) (8.8x20.5x2mm Thk)1
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283-3513 Lines Gp-Pump
254-1460 Lines Gp-Rear Attachment
18***86Tee1
1P***78Clamp; (Hose)10
24***40Tank Group-Hydraulic1
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325-7273 Lines Gp-Rear Attachment
13***56Seal-O-Ring1
19***64Elbow1
25***55Tank As-Hydraulic1
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263-3323 Lines Gp-Ripper
11***10Gasket-Screen; (Hydraulic Tank)1
19***10Cover As1
26***23Lines Group-Ripper1
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325-7269 Lines Gp-Winch
25***50Valve Group-Bank 31
32***69Lines Group-Winch1
8T***82Bolt-Plt; (M10 X 1.5 X 45)3
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284-0970 Lines Gp-Winch
28***70Lines Group-Winch1
2M***80Seal--To Connector Pump Outlet2
32***51Valve Group-Bank 5; -Implement1
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269-1087 Manifold Gp-Valve -Outlet
25***51Valve Group-Bank 4; -Implement1
26***87Manifold Group-Valve; -Outlet1
8T***82Bolt-Plt; (M10 X 1.5 X 45)3
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244-7452 Pump Gp-Gear
09***74Seal-O-Ring (Id=6.8mm); (Id=6.80mm)24
09***86Seal - O-Ring (19.80 mm Id)3
09***90Seal-O-Ring (Id=21.80mm)9
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274-7516 Support Gp-Pump Drive
09***74Seal-O-Ring (Id=6.8mm); (Id=6.80mm)32
09***86Seal - O-Ring (19.80 mm Id)4
09***90Seal-O-Ring (Id=21.80mm)12
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319-8113 Tank & Mtg Gp-Hydraulic -Fire Plow
09***74Seal-O-Ring (Id=6.8mm); (Id=6.80mm)32
09***86Seal - O-Ring (19.80 mm Id)4
09***90Seal-O-Ring (Id=21.80mm)12
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319-8114 Tank Gp-Hydraulic -Fire Plow
09***74Bolt-Socket Head; (M5x0.8x12-mm)4
30***42Valve Group-Solenoid; (Blade Lift)2
30***45Kit-Cover; (Compensator)1
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244-7426 Tank Gp-Hydraulic
09***74Seal-O-Ring (Id=6.8mm); (Id=6.80mm)40
09***86Seal - O-Ring (19.80 mm Id)5
09***90Seal-O-Ring (Id=21.80mm)15
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244-7440 Tank Gp-Hydraulic
09***82Seal-O-Ring (Id=13.80mm)1
09***90Seal-O-Ring (Id=21.80mm)3
09***50Seal-O-Ring (Id=10.82mm)1
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325-7271 Valve & Mounting Gp
09***74Bolt-Socket Head; (M5x0.8x12-mm)4
30***42Valve Group-Solenoid; (Blade Lift)2
30***45Kit-Cover; (Compensator)1
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325-7272 Valve & Mtg Gp-Control
09***74Bolt-Socket Head; (M5x0.8x12-mm)4
30***43Valve Group-Solenoid; (Angle)2
30***45Kit-Cover; (Compensator)1
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254-1386 Valve & Mtg Gp-Implement Cont -Standard
09***35Connector1
13***93Hose As1
14***25Connector As.2
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254-1457 Valve & Mtg Gp-Implement Cont
09***82Seal-O-Ring (Id=13.80mm)1
09***50Seal-O-Ring (Id=10.82mm)1
09***74Bolt-Socket Head; (M5x0.8x12-mm)4
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254-1450 Valve Gp-Bank 3
15***53Spacer6
18***76Bearing; (Sleeve)2
18***78Washer-Thrust4
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254-1451 Valve Gp-Bank 4 -Implement
15***23Boss As1
15***15Boss As1
17***32Pin; (Lock)1
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323-8150 Valve Gp-Bank 4 -Implement
17***93Bumper; (Rubber)2
18***53Latch As-Door; (Rotary)(Rh)1
18***54Latch As-Door; (Rotary)(Rh)1
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323-8151 Valve Gp-Bank 5 -Implement
17***93Bumper; (Rubber)2
18***53Latch As-Door; (Rotary)(Rh)1
18***54Latch As-Door; (Rotary)(Rh)1
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322-6506 Valve Gp-Control
18***27Condenser Group-Refrigerant1
24***85Hose; (16.5-Dm)0
24***24Wiring Group-Air Conditioner1
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304-1139 Valve Gp-Control -Tilt
269-1085 Valve Gp-Control -Angle
09***66Washer; (Hard) (4.5x9x1mm Thk)6
11***27Screw-Machine; (M6x1x30-mm)2
12***27Seal; (95-cm Each)0
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269-1084 Valve Gp-Control -Blade Lift
25***58Plate As1
25***60Cover As; (Light)1
26***13Cap19
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269-1086 Valve Gp-Control -Auxiliary
26***86Valve Group-Control; -Auxiliary1
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326-8749 Valve Gp-Control -Auxiliary
09***66Washer; (Hard) (4.5x9x1mm Thk)4
10***04Kit-Receptacle; (4-Pin)(Start Switch)1
11***15Grommet1
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Implements
255-2098 C-Frame Gp-Power Angling -Tilt
25***98C-Frame Group-Power Angling; -Tilt1
32***78Plate As1
32***79Filter-Air; (Air Conditioner)1
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255-1357 Link Gp-Pitch
25***57Link Group-Pitch1
29***81Arm As; (Inner, Rh)1
29***84Arm As; (Inner, Lh)1
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Lubrication System
314-3960 Filler Gp-Engine Oil
12***99Bolt; (M10x1.5x40-mm)2
27***74Regulator As-Water Temperature; (Connector Included)1
28***44Gasket-Water Regulator; (Temperature)1
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298-5100 Filter Gp-Engine Oil
10***71Bolt2
22***44Gasket; (Engine Oil Filter Base)2
23***51Plate; (Blanking)1
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283-3426 Filter Gp-Engine Oil -Includes Shutoff Valve
12***99Bolt; (M10x1.5x40-mm)2
28***44Gasket-Water Regulator; (Temperature)1
28***26Filter Group-Engine Oil; -Includes Shutoff Valve1
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298-5112 Pump Gp-Engine Oil
22***44Gasket; (Engine Oil Filter Base)2
23***51Plate; (Blanking)1
24***74Head As-Oil Filter; (Engine)1
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304-5617 Valve Gp-Fluid Sampling -Engine Oil
10***51Bolt; (M8x1.25x65-mm)2
30***17Gear, Lub Oil Pumpin, Valve Group-Fluid Sampling; -Engine Oil1
35***14Cooler-Oil1
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Machine Arrangement
244-7379 Chassis Ar
24***79Chassis Ar1
24***99Frame Group1
24***08Tank Group-Fuel1
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244-7378 Chassis Ar
24***78Chassis Ar1
24***90Film Group1
24***98Frame Group1
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244-7372 Common Ar
24***72Common Ar1
24***78Chassis Ar1
24***85Hydraulic Ar1
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244-7373 Common Ar
24***73Common Ar1
24***79Chassis Ar1
24***85Hydraulic Ar1
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325-6544 Modification Ar
32***24Lines Group-Hydraulic1
32***44Modification Ar1
32***93Lines Group-Pump1
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325-6498 Modification Ar
31***07Conversion Group-Electrical; -Fire Plow1
31***03Tank Group-Fuel; -Fire Plow1
31***13Tank & Mtg Group-Hydraulic; -Fire Plow1
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325-6543 Modification Ar
32***23Lines Group-Steering1
32***43Modification Ar1
32***93Lines Group-Pump1
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325-6499 Modification Ar
31***07Conversion Group-Electrical; -Fire Plow1
31***03Tank Group-Fuel; -Fire Plow1
31***13Tank & Mtg Group-Hydraulic; -Fire Plow1
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344-7614 Special Ar
31***07Conversion Group-Electrical; -Fire Plow1
31***03Tank Group-Fuel; -Fire Plow1
31***13Tank & Mtg Group-Hydraulic; -Fire Plow1
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Operator Station
255-4240 Accessory Gp-Cab -Orops
12***70Capscrew; (Button Hd) (M8x1.25x20) (G10.9)9
25***98Knob2
25***40Accessory Group-Cab; -Orops1
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325-7265 Accessory Gp-Cab -Fire Plow
12***70Capscrew; (Button Hd) (M8x1.25x20) (G10.9)9
25***98Knob2
26***82Bracket1
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255-4239 Accessory Gp-Cab -Erops
25***39Accessory Group-Cab; -Erops1
29***90Bearing1
29***08Spacer1
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186-6190 Accumulator Gp-Refrigerant -Charged
17***70Compressor Group-Refrigerant1
18***90Accumulator Group-Refrigerant; -With Desiccant1
26***72Bracket1
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176-3900 Accumulator Gp-Refrigerant -Uncharged
17***00Accumulator Group-Refrigerant; -With Desiccant1
29***37Nut1
29***38Seal1
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254-3210 Air Conditioner & Mounting Gp
10***02Kit-Receptacle; (2-Pin)(Engine Sensor Wiring Harness)1
11***69Valve Group-Relief; (Refrigerant Compressor)1
25***10Air Conditioner & Mounting Group1
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252-4502 Air Conditioner Gp
10***02Kit-Receptacle; (2-Pin)(Engine Sensor Wiring Harness)1
11***15Relay As; (12-Volt)(Junction Box)2
12***66Socket-Connector; (14-Ga To 18-Ga)2
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326-8180 Air Conditioner Gp
13***54Screw-Truss Head; (M4x0.7x10-mm)11
18***46Latch As1
25***87Hinge As1
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291-7980 Arm Gp-Seat Suspension -Center
13***54Screw-Truss Head; (M4x0.7x10-mm)11
18***46Latch As1
25***87Hinge As1
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291-8011 Arm Gp-Seat Suspension -Outer, Lh
28***40Cushion As1
28***41Bracket1
28***43Bracket As1
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291-8004 Arm Gp-Seat Suspension -Outer, Rh
28***40Cushion As1
28***41Bracket1
28***42Bracket As1
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280-9679 Armrest Gp -Lh
25***39Pedal Group-Governor & Brake1
28***79Armrest Group; -Lh1
7X***29Washer; (11x25x3-mm Thk)3
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284-7054 Armrest Gp -Rh
28***54Armrest Group; -Rh1
32***69Pedal Group-Governor & Brake1
7X***29Washer; (11x25x3-mm Thk)3
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322-5908 Cable Gp-Control -Fire Plow-Fuel Shutoff
15***74Kit-Receptacle; (4-Pin)1
27***65Boot1
27***67Retainer-Boot1
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255-3696 Compressor & Mtg Gp-Refrig
14***31Cap-Push Button; (Yellow)(Transmission Hold)1
18***35Pin-Connector; (16-Ga To 18-Ga)7
25***96Compressor & Mtg Group-Refrig1
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178-9570 Compressor Gp-Refrigerant
14***31Cap-Push Button; (Yellow)(Transmission Hold)1
17***70Compressor Group-Refrigerant1
18***35Pin-Connector; (16-Ga To 18-Ga)11
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180-5927 Condenser Gp-Refrigerant
14***31Cap-Push Button; (Yellow)(Transmission Hold)1
18***27Condenser Group-Refrigerant1
18***35Pin-Connector; (16-Ga To 18-Ga)9
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314-3004 Console Gp -Lh
10***02Kit-Receptacle; (2-Pin)(Engine Sensor Wiring Harness)2
10***05Kit-Receptacle; (6-Pin)(Display Monitor Harness)1
10***06Receptacle Kit; (Includes Wedge And Receptacle Assem.)1
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314-3003 Console Gp-Control -Lh
15***74Kit-Receptacle; (4-Pin)1
27***65Boot1
27***67Retainer-Boot1
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268-9352 Console Gp-Operator -Lh
18***35Pin-Connector; (16-Ga To 18-Ga)17
23***11Receptacle As-Connector; (6-Pin)1
25***44Sensor As-Position; (Bulldozer Control)1
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268-9351 Console Gp-Operator -Rh
10***02Kit-Receptacle; (2-Pin)(Engine Sensor Wiring Harness)2
10***05Kit-Receptacle; (6-Pin)(Display Monitor Harness)1
10***06Receptacle Kit; (Includes Wedge And Receptacle Assem.)1
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324-0670 Control & Mtg Gp-Pedal -Governor, Brake
10***05Kit-Receptacle; (6-Pin)(Display Monitor Harness)1
14***31Cap-Push Button; (Yellow)(Transmission Hold)1
18***35Pin-Connector; (16-Ga To 18-Ga)15
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247-6506 Control & Mtg Gp-Pedal -Governor, Brake
18***35Pin-Connector; (16-Ga To 18-Ga)13
23***11Receptacle As-Connector; (6-Pin)1
24***06Control & Mtg Group-Pedal; -Governor, Brake1
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252-4559 Control Gp-Handle -Winch-Ripper
14***31Cap-Push Button; (Yellow)(Transmission Hold)1
18***35Pin-Connector; (16-Ga To 18-Ga)23
22***55Cap-Push Button; (Black)2
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266-7631 Control Gp-Handle -Grade Control, Rh
14***31Cap-Push Button; (Yellow)(Transmission Hold)1
18***35Pin-Connector; (16-Ga To 18-Ga)19
23***11Receptacle As-Connector; (6-Pin)2
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307-4673 Control Gp-Handle
10***91Screw; (Flat Head) (No.6-20x0.5in)4
11***85Bumper1
12***70Capscrew; (Button Hd) (M8x1.25x20) (G10.9)15
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266-7632 Control Gp-Handle -Grade Control, Rh
10***02Kit-Receptacle; (2-Pin)(Engine Sensor Wiring Harness)2
10***06Receptacle Kit; (Includes Wedge And Receptacle Assem.)1
12***74Tube-Heat Shrink; (5.72-mm Dia)(950-cm)0
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266-7634 Control Gp-Handle -Steering
12***36Screw; (Truss Head) (M6x1.0x16mm)4
16***50Lever1
16***74Louver As-Vent4
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318-6111 Control Gp-Hydraulic -Fire Plow
10***91Screw; (Flat Head) (No.6-20x0.5in)4
12***70Capscrew; (Button Hd) (M8x1.25x20) (G10.9)15
12***36Screw; (Truss Head) (M6x1.0x16mm)4
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318-6109 Control Gp-Hydraulic -4th Valve, Float
10***91Screw; (Flat Head) (No.6-20x0.5in)4
12***70Capscrew; (Button Hd) (M8x1.25x20) (G10.9)15
12***36Screw; (Truss Head) (M6x1.0x16mm)6
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274-4646 Control Gp-Joystick -Bulldozer, Rh
12***36Screw; (Truss Head) (M6x1.0x16mm)4
16***50Lever1
16***74Louver As-Vent4
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328-0895 Control Gp-Joystick -Bulldozer, Rh
28***30Display Group-Monitor; (Cd610)1
29***11Case-Carrying1
32***95Control Group-Joystick; -Bulldozer, Rh1
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328-0894 Control Gp-Joystick -Grade Control, Rh
23***09Receptacle As-Connector; (4-Pin)1
32***94Control Group-Joystick; -Hook, Boom, Counterweight1
8T***37Plug-Seal; (40 Pin Connector)1
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290-4835 Control Gp-Joystick -Steering, Lh
09***66Washer; (Hard) (4.5x9x1mm Thk)6
19***31Adapter; (Compact)1
24***16Display Group-Monitor; (Cd700)1
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274-4645 Control Gp-Joystick -Grade Control, Rh
25***56Plate1
27***45Control Group-Joystick; -Grade Control, Rh1
9X***45Screw-Truss Head (M6x1x20mm); (M6x1x20-mm)4
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249-9051 Control Gp-Ripper
10***04Kit-Receptacle; (4-Pin)(Start Switch)1
10***71Clevis1
12***75Blade As-Wiper; (450-mm)(Door, Rh)1
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285-0331 Cover Gp-Cab -Erops
09***66Washer; (Hard) (4.5x9x1mm Thk)4
10***04Kit-Receptacle; (4-Pin)(Start Switch)1
11***15Grommet1
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255-4230 Cover Gp-Cab -Orops
10***04Kit-Receptacle; (4-Pin)(Start Switch)1
10***71Clevis1
12***75Blade As-Wiper; (450-mm)(Door, Rh)1
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255-4231 Cover Gp-Cab -Erops
10***04Kit-Receptacle; (4-Pin)(Start Switch)1
10***71Clevis1
12***75Blade As-Wiper; (450-mm)(Door, Rh)1
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269-7665 Cover Gp-Console -Standard
26***65Cover Group-Console; -Standard1
27***68Valve Group-Cab Heater1
28***57Coil As-Heater1
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285-0330 Cover Gp-Console -Orops
27***68Valve Group-Cab Heater1
28***30Cover Group-Console; -Orops1
28***22Crankshaft Seal Installer, Coil As-Heater1
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292-0309 Display Gp-Monitor -Cd610
10***04Kit-Receptacle; (4-Pin)(Start Switch)1
10***07Switch Group-Rotary; -Autodig Material Select-Throttle Position1
11***09Knob-Control1
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286-0134 Display Gp-Monitor -Cd700c
13***54Screw-Truss Head; (M4x0.7x10-mm)8
14***22Nut; (M5x0.8-Thd)1
16***54Bolt; (M5x0.8x40-mm)1
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286-9124 Display Gp-Monitor -Light Bar
10***04Kit-Receptacle; (4-Pin)(Start Switch)1
10***07Switch Group-Rotary; -Autodig Material Select-Throttle Position1
11***09Knob-Control1
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255-4273 Door Gp-Cab -Rh
13***84Clip4
25***73Door Group-Cab; -Rh1
26***12Tape; (50-cm Each)0
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255-4272 Door Gp-Cab -Lh
25***72Door Group-Cab; -Lh1
26***85Tube1
26***86Tube1
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255-4271 Door Gp-Cab -Rh
10***96Clip2
10***86Sleeve2
10***93Valve As1
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255-4274 Door Gp-Cab -Lh
24***41Padlock Group; (1 On Fuel Tank Cap) (1 On Hydraulic Tank Cap) (1 On Grill Latch)1
25***74Door Group-Cab; -Lh1
5P***00Key Total 2 Pieces Per Unit; (Literature Compartment)2
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254-3190 Heater Gp-Cab
18***35Pin-Connector; (16-Ga To 18-Ga)4
20***23Cap; (Wiper)1
23***09Receptacle As-Connector; (4-Pin)1
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277-9969 Heater Gp-Cab
18***35Pin-Connector; (16-Ga To 18-Ga)4
20***23Cap; (Wiper)1
23***09Receptacle As-Connector; (4-Pin)1
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289-2123 Heater Gp-Cab
18***35Pin-Connector; (16-Ga To 18-Ga)4
23***09Receptacle As-Connector; (4-Pin)1
26***23Cap-Wiper1
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252-4504 Heater Gp-Cab
25***04Heater Group-Cab1
28***98Mirror As1
3E***20Screw-Truss Head; (M6x1x25-mm)1
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247-6505 Installation Gp-Radio
18***35Pin-Connector; (16-Ga To 18-Ga)4
23***09Receptacle As-Connector; (4-Pin)1
24***05Installation Group-Radio1
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245-6039 Instrument Gp -Erops
14***80Bracket-Mounting1
16***10Bracket As1
24***39Instrument Group; -Erops1
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245-6022 Instrument Gp -Orops
11***31Mount Assem.8
12***28Washer-Hard; (26x40x8-mm Thk)4
24***22Instrument Group; -Orops1
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257-9819 Lines Gp-Air Conditioner
13***43Plate As-Lumbar1
17***52Retainer1
17***07Holder1
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327-7684 Lines Gp-Heater
09***66Washer; (Hard) (4.5x9x1mm Thk)4
10***04Kit-Receptacle; (4-Pin)(Start Switch)1
11***80Spring1
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255-4241 Lines Gp-Heater
09***66Washer; (Hard) (4.5x9x1mm Thk)4
10***04Kit-Receptacle; (4-Pin)(Start Switch)1
11***80Spring1
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6v-1971 Literature Gp -Machine
24***21Wiring Group-Cab; -Erops1
24***39Instrument Group; -Erops1
24***03Window Group-Cab1
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281-3997 Mirror Gp-Rear View -Lh
24***21Wiring Group-Cab; -Erops1
24***39Instrument Group; -Erops1
24***05Installation Group-Radio1
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261-7992 Motor Gp-Window Wiper
24***22Instrument Group; -Orops1
24***47Wiring Group-Cab; -Orops1
25***70Rollover As; (Orops)1
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261-7993 Motor Gp-Window Wiper
24***21Wiring Group-Cab; -Erops1
24***39Instrument Group; -Erops1
24***03Window Group-Cab1
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262-0319 Motor Gp-Window Wiper -Front
26***19Motor Group-Window Wiper; -Front1
30***20Adapter-Spline, Spline Adapter, Screen As-Cab1
7X***52Bolt-Plt; (M16 X 2.0 X 30)4
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261-7996 Motor Gp-Window Wiper -Rear
24***21Wiring Group-Cab; -Erops1
24***39Instrument Group; -Erops1
24***05Installation Group-Radio1
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254-3169 Mounting Gp-Cab
25***52Screen As; (Rh)1
25***53Screen As; (Lh)1
25***69Mounting Group-Cab1
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259-4746 Mounting Gp-Radio -Grade Control
25***59Rod As1
25***03Hinge2
25***46Mounting Group-Radio; -Grade Control1
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292-6402 Pan Gp-Backrest -Lumbar
26***51Console Group-Operator; -Rh1
26***52Console Group-Operator; -Lh1
28***79Armrest Group; -Lh1
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324-0669 Pedal Gp-Governor & Brake
0T***89Cap Screw (2" Long)2
27***03Spacer; (11.7x19.8x25.4-mm Thk)1
32***69Pedal Group-Governor & Brake1
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253-2439 Pedal Gp-Governor & Brake
244-7476 Rops Ar -Erops
03***14Bolt-Self Locking; (1/4unc X 1/2)1
10***67Washer-Hard; (7.2x25x2-mm Thk)1
10***03Kit; (Receptacle) (3-Pin) (Includes Receptacle As & Wedge)1
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244-7475 Rops Ar -Erops
03***14Bolt-Self Locking; (1/4unc X 1/2)1
10***67Washer-Hard; (7.2x25x2-mm Thk)1
10***03Kit; (Receptacle) (3-Pin) (Includes Receptacle As & Wedge)1
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282-4897 Rops Ar -Orops
03***14Bolt-Self Locking; (1/4unc X 1/2)1
10***67Washer-Hard; (7.2x25x2-mm Thk)1
10***03Kit; (Receptacle) (3-Pin) (Includes Receptacle As & Wedge)1
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282-4899 Rops Ar-Enclosed -Erops
25***59Seat Group-Suspension; -Vinyl1
26***51Console Group-Operator; -Rh1
26***52Console Group-Operator; -Lh1
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282-4898 Rops Ar-Enclosed -Erops
03***14Bolt-Self Locking; (1/4unc X 1/2)1
10***67Washer-Hard; (7.2x25x2-mm Thk)1
10***03Kit; (Receptacle) (3-Pin) (Includes Receptacle As & Wedge)1
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272-9770 Screen Gp-Cab -Orops
25***46Seat Group-Suspension; -Cloth1
26***51Console Group-Operator; -Rh1
26***52Console Group-Operator; -Lh1
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250-1699 Screen Gp-Protection -Sides
25***99Screen Group-Protection; -Sides1
26***51Console Group-Operator; -Rh1
26***52Console Group-Operator; -Lh1
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272-9780 Screen Gp-Protection
16***89Block-Slider4
17***87Setscrew; (1/4-20-Thd)4
17***35Block Kit; (Includes Bolt, Washers, Blocks And Setscrews)1
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255-4242 Seat & Support Gp -Vinyl, Heated
17***87Setscrew; (1/4-20-Thd)4
17***35Block Kit; (Includes Bolt, Washers, Blocks And Setscrews)1
20***03Washer-Hard; (10.2x22.22x2.38-mm Thk)2
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272-2272 Seat Belt Gp -Retractable
17***87Setscrew; (1/4-20-Thd)4
17***35Block Kit; (Includes Bolt, Washers, Blocks And Setscrews)1
20***03Washer-Hard; (10.2x22.22x2.38-mm Thk)2
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258-8373 Seat Belt Gp -Retractable
17***87Setscrew; (1/4-20-Thd)4
17***35Block Kit; (Includes Bolt, Washers, Blocks And Setscrews)1
20***03Washer-Hard; (10.2x22.22x2.38-mm Thk)2
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295-4434 Seat Gp -Cloth
16***98Seal-Lip Type2
1W***17Dowel-Hollow2
24***95Rod1
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301-0147 Seat Gp -Heated Seat
10***05Kit-Receptacle; (6-Pin)(Display Monitor Harness)1
12***15Connector4
12***75Tube-Heat Shrink; (7.44-mm Dia)(560-cm)0
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295-4436 Seat Gp -Vinyl
03***49Nut-Self Lock; (No.10.Unc)2
10***03Fastener22
10***02Kit-Receptacle; (2-Pin)(Engine Sensor Wiring Harness)1
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295-4433 Seat Gp -Cloth, Heated
16***98Seal-Lip Type2
1W***17Dowel-Hollow2
24***95Rod1
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255-4250 Seat Gp-Suspension -Vinyl
24***82Glass-Front1
24***83Glass-Rear1
25***50Seat Group-Suspension; -Vinyl1
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272-8111 Seat Gp-Suspension -Cloth, Heated
22***72Seal; (19.9-cm)0
26***99Glass; (Rh)1
26***00Glass1
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301-0148 Seat Gp-Suspension -Vinyl, Heated
22***72Seal; (19.9-cm)0
26***00Glass1
28***68Stop1
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255-4251 Seat Gp-Suspension -Cloth
24***82Glass-Front1
24***83Glass-Rear1
25***51Seat Group-Suspension; -Cloth1
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255-8846 Seat Gp-Suspension -Cloth
13***70Seal; (326-cm)0
14***87Cushion1
19***40Seal; (8-cm)0
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255-4252 Seat Gp-Suspension -Cloth, Heated
24***83Glass-Rear1
25***52Seat Group-Suspension; -Cloth, Heated1
25***03Window Group-Cab; -Rh1
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257-4959 Seat Gp-Suspension -Vinyl
13***70Seal; (326-cm)0
14***87Cushion1
19***40Seal; (8-cm)0
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284-7055 Support Gp-Hydraulic Control -Rh
13***91Nozzle As-Washer1
14***95Hose; (650-cm Each)0
14***33Blade As-Wiper; (500-mm)(Rear)1
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284-7059 Support Gp-Steering Control -Lh
25***57Link Group-Pitch1
25***62Blade Group-Angling; -Low Ground Pressure1
28***59Support Group-Steering Control; -Lh1
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316-8368 Suspension Gp-Seat
25***57Link Group-Pitch1
25***95Blade Group-Angling; -Xl Grade Control1
31***68Suspension Group-Seat1
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255-4229 Washer Gp-Window
25***57Link Group-Pitch1
25***14Blade Group-Angling; -Low Ground Pressure1
25***29Washer Group-Window1
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247-6503 Window Gp-Cab
24***03Window Group-Cab1
25***57Link Group-Pitch1
25***27Blade Group-Angling; -Xl Grade Control1
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259-4405 Window Gp-Cab -Lh
25***57Link Group-Pitch1
25***70Blade Group-Angling; -Low Ground Pressure1
25***05Window Group-Cab; -Lh1
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255-4275 Window Gp-Cab
25***57Link Group-Pitch1
25***87Blade Group-Angling; -Xl Grade Control1
25***75Window Group-Cab; -Forestry1
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259-4403 Window Gp-Cab -Rh
25***57Link Group-Pitch1
25***03Blade Group-Angling; -Xl Grade Control1
25***03Window Group-Cab; -Rh1
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333-2733 Window Gp-Sliding -Lh
25***57Link Group-Pitch1
25***76Blade Group-Angling; -Low Ground Pressure1
33***33Window Group-Sliding; -Lh1
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333-2732 Window Gp-Sliding -Rh
25***57Link Group-Pitch1
25***73Blade Group-Angling; -Xl Grade Control1
33***32Window Group-Sliding; -Rh1
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255-4228 Wiper Gp-Window
25***57Link Group-Pitch1
25***79Blade Group-Angling; -Xl Grade Control1
25***28Wiper Group-Window1
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Power Train
212-7032 Actuator Gp-Pump -Servo
13***04Switch As-Pressure; (Power Train Oil Filter Bypass)1
1G***78Filter As-Oil; (Advanced Efficiency)(Hydraulic)1
21***32Actuator Group-Pump; -Servo1
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199-6225 Actuator Gp-Pump -Servo
10***33. Pedestal, Flange-Nylon1
11***77Bolt; (M16x2x65-mm)2
19***25Actuator Group-Pump; -Servo1
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244-7616 Brake Gp-Parking
1P***02Seal-Rectangular 28.83mm(1.136in) Id4
1P***03Seal - Rectangular (31.86mm Id)4
24***16Brake Group-Parking1
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244-7450 Drive Ar -Auxiliary Pump
1P***02Seal-Rectangular 28.83mm(1.136in) Id4
1P***03Seal - Rectangular (31.86mm Id)4
24***50Drive Ar; -Auxiliary Pump1
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291-5205 Drive Ar -Auxiliary
14***18Connector As1
14***64Elbow, 90°,-8 Orb /-8 Orfs1
14***28Tee As-Orfs1
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291-5095 Drive Ar -Standard
16***12Clamp2
26***71Hose As1
26***72Hose As1
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244-1529 Drive Gp-Final
12***64Hose As1
14***18Connector As1
14***64Elbow, 90°,-8 Orb /-8 Orfs1
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244-7409 Drive Gp-Hydrostatic
12***64Hose As1
16***11Clamp2
16***12Clamp2
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212-9363 Filter Gp-Oil -Front
16***11Clamp2
16***12Clamp2
19***11Insulation; (66-cm Each)0
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296-6707 Head Gp-Pump
1P***02Seal-Rectangular 28.83mm(1.136in) Id4
1P***03Seal - Rectangular (31.86mm Id)4
28***46Hose As1
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244-7412 Lines Gp-Hydrostatic
11***17Clip1
13***04Switch As-Pressure; (Power Train Oil Filter Bypass)1
14***42Connector Group2
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244-7411 Lines Gp-Hydrostatic
13***98Clip1
14***17Adapter, -12 Orb / -16 Orfs2
14***27Connector Group2
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327-8880 Lines Gp-Hydrostatic
13***98Clip1
14***17Adapter, -12 Orb / -16 Orfs2
14***27Connector Group2
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303-6594 Lines Gp-Power Train Cooler
10***66Clip; (50.8mm Id)1
16***12Clamp2
16***13Clamp2
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327-7667 Lines Gp-Power Train Cooler
327-7666 Lines Gp-Power Train Cooler
12***06Clip-Loop1
16***12Clamp2
20***06Hose1
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244-7441 Lines Gp-Power Train Cooler
10***66Clip; (50.8mm Id)1
16***12Clamp2
16***13Clamp2
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289-0254 Lines Gp-Pump
09***00Setscrew-Socket1
13***39Seal-Lip Type1
14***05Setscrew; (M10x1.5x70mm)1
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329-1321 Lines Gp-Transmission Oil -Case Drain
11***78Bushing; (Bearing)1
11***22Seal-Ring2
12***09Plate1
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329-1938 Lines Gp-Transmission Oil -Charge
11***78Bushing; (Bearing)1
12***98Seal-Bonded4
17***64Seal-O-Ring2
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263-4157 Lines Gp-Transmission Oil -Case Drain
24***29Drive Group-Final2
24***09Drive Group-Hydrostatic1
24***43Lines Group-Transmission Oil; -Case Drain1
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254-1366 Lines Gp-Transmission Oil -Charge
24***29Drive Group-Final2
24***09Drive Group-Hydrostatic1
24***41Lines Group-Power Train Cooler1
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244-7443 Lines Gp-Transmission Oil -Case Drain
12***94Plug; (Break Off)1
12***16Pin1
12***82Pin1
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329-1922 Lines Gp-Transmission Oil -Case Drain
11***78Bushing; (Bearing)1
12***98Seal-Bonded4
17***64Seal-O-Ring2
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274-6747 Manifold Gp-Control
09***01Bolt-Socket Head; (M8x1.25x40-mm)4
11***78Bushing; (Bearing)1
12***98Seal-Bonded4
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200-1729 Motor Gp-Piston
20***29Motor Group-Piston; -Winch1
28***85Pump Group-Piston; -Slipper1
28***86Pump Group-Piston; -Slipper1
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254-1354 Motor Gp-Piston
25***54Motor Group-Piston1
28***85Pump Group-Piston; -Slipper1
28***87Pump Group-Piston; -Slipper1
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244-7446 Power Train Ar
08***72Plug-O-Ring3
10***99Plug1
10***19Bolt; (Socket Head) (M12x1.75x70mm)4
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244-7483 Power Train Ar
12***18Pin1
16***05Pin2
18***01Seal1
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293-5439 Pump Gp-Charge -Slipper
11***19Screw-Special; (M5x0.8x8-mm)14
12***32Shim; (3.50mm Thk)1
12***33Shim; (3.60mm Thk)1
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212-7037 Pump Gp-Charge -Hystat Propel
12***18Pin1
16***05Pin2
18***01Seal1
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293-5440 Pump Gp-Charge
12***32Piston9
12***33Spring-Cup1
12***38Plate-Retainer1
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293-5438 Pump Gp-Charge -Slipper
12***18Pin1
16***05Pin2
18***01Seal1
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289-6386 Pump Gp-Piston -Slipper
25***87Sprocket-Track1
28***86Pump Group-Piston; -Slipper1
5P***46Washer-Hard; (15.5x29x3-mm Thk)31
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254-1378 Pump Gp-Piston -Hydrostatic
10***65Circlip1
11***42Shaft-Drive1
11***51Bearing1
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254-1377 Pump Gp-Piston -Hydrostatic Drive
10***65Circlip1
11***51Bearing1
19***83Seal-Shaft1
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254-1379 Pump Gp-Piston -Winch
08***98Bearing1
10***65Circlip1
12***37Wire; (Rod)1
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289-6387 Pump Gp-Piston -Slipper
10***17Seal-O-Ring2
12***04Shim; (1-mm Thk)1
12***05Shim; (0.3-mm Thk)1
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289-6385 Pump Gp-Piston -Slipper
27***55Segment1
27***56Segment5
28***85Pump Group-Piston; -Slipper1
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199-1088 Rotating Gp-Motor -Hystat Propel
12***69Plug2
19***88Rotating Group-Motor; -Hystat Propel1
21***75Seal-O-Ring1
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280-7343 Rotating Gp-Motor -Implement
09***35Connector1
13***93Hose As1
14***37Connector1
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293-5445 Rotating Gp-Pump
09***35Connector1
13***93Hose As1
14***25Connector As.2
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293-5444 Rotating Gp-Pump
09***35Connector1
13***93Hose As1
14***37Connector1
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276-8206 Rotating Gp-Pump -Propel
09***35Connector1
13***93Hose As1
14***37Connector1
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278-2357 Segment Gp-Sprocket
09***35Connector1
13***93Hose As1
14***37Connector1
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258-9789 Sprocket Gp
09***35Connector1
13***93Hose As1
14***37Connector1
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293-5448 Valve Gp-Flushing -Hydrostatic Drive
09***35Connector1
11***51Hose As1
13***93Hose As1
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293-5442 Valve Gp-Pilot -Hydrostatic Drive
12***63Kit-Seal; (Contains Parts Marked J)1
29***42Valve Group-Pilot; -Hydrostatic Drive1
6E***07Locknut-Sealing1
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271-9178 Valve Gp-Pump Control
19***86Washer; (23x32x1.6-mm Thk)1
21***43Shim; (1-mm Thk)4
25***71Enclosure As1
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244-7442 Valve Gp-Pump Control
08***39Seal-O-Ring (Id=26.64mm)2
09***22Bolt-Socket Head; (M5x0.8x10-mm)8
19***53Gasket1
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322-6507 Valve Gp-Pump Control
31***67Panel As-Enclosure; (Rh)1
32***07Valve Group-Pump Control1
32***19Panel As-Enclosure; (Lh)1
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177-7122 Valve Gp-Relief -Charge Pressure
12***27Seal; (95-cm Each)0
17***22Valve Group-Relief; -Charge Pressure-Vibratory Pump1
21***41Spacer; (13.9x21.3x8-mm Thk)8
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154-9445 Valve Gp-Relief -Pressure Override-Hydrostatic Pump
12***27Seal; (95-cm Each)0
15***45Valve Group-Relief; -Pressure Override-Hydrostatic Pump1
21***41Spacer; (13.9x21.3x8-mm Thk)8
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212-7035 Valve Gp-Relief -Crossover
21***35Valve Group-Relief; -Crossover1
24***98Frame Group1
32***52Bracket As1
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293-5451 Valve Gp-Solenoid
24***99Frame Group1
29***51Valve Group-Solenoid1
32***52Bracket As1
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Service Equipment And Supplies
244-7390 Film Gp
244-7485 Film Gp
260-9502 Lock Gp-Vandalism
286-5018 Plate & Film Gp
286-5017 Plate & Film Gp
244-7508 Plate & Film Gp
Steering And Braking System
309-5075 Brake Gp-Service & Parking
25***86Valve & Mtg Group-Implement Cont; -Standard1
26***00Lines Group-Angle & Tilt1
26***10Lines Group-Hydraulic1
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325-1323 Lines Gp-Steering
24***51Control Group-Ripper1
25***57Valve & Mtg Group-Implement Cont1
25***60Lines Group-Rear Attachment1
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Undercarriage
254-0664 Adjustment Gp-Hydraulic Track
14***81Spacer; (13.5x25x12-mm Thk)24
25***64Adjustment Group-Hydraulic Track1
28***40Guard As; (Lh)2
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262-5874 Guard Gp-Idler
25***89Strip-Wear12
25***90Strip-Wear16
25***91Strip-Wear12
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244-7418 Guard Gp-Idler
24***18Guard Group-Idler1
25***89Strip-Wear12
25***90Strip-Wear16
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282-3664 Guard Gp-Track Guide -Systemone
02***73Pin-Spring2
10***87Idler & Bearing As1
1H***96Packing,Preformed Cartridge Part Of Kit P/N 4j***802
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282-3714 Guard Gp-Track Guide -Systemone
28***14Guard Group-Track Guide; -Systemone1
28***46Cartridge As-Track Link2
6Y***73Plug; (Clear)2
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244-7424 Guard Gp-Track Guide
02***73Pin-Spring2
1H***96Packing,Preformed Cartridge Part Of Kit P/N 4j***802
24***24Guard Group-Track Guide1
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282-3674 Guard Gp-Track Guide -Center
25***28Bolt-Track Master; (M16x1.5x81-mm)4
26***40Link-Track38
28***74Guard Group-Track Guide; -Center1
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282-3703 Guard Gp-Track Guide -Systemone, Front
18***46Bushing-Track43
25***02Seal As86
28***03Guard Group-Track Guide; -Systemone, Front1
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282-3684 Guard Gp-Track Roller -Full Length
14***81Spacer; (13.5x25x12-mm Thk)56
21***01Bolt; (M12x1.75x50-mm)56
24***77Roller Group-Track-Single Flange14
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244-7524 Guard Gp-Track Roller -Full Length
24***24Guard Group-Track Roller; -Full Length1
26***40Link-Track2
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244-7500 Idler Gp-Front
14***81Spacer; (13.5x25x12-mm Thk)56
20***04Plate28
21***01Bolt; (M12x1.75x50-mm)56
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254-0593 Idler Gp-Front
25***93Idler Group-Front1
30***54Roller Group-Track-Single Flange14
5P***47Washer (Bracket To Valve Support)56
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254-0684 Idler Gp-Track
0L***51Bolt Starting Engine Fuel Tank Bracket To Diesel Intake Manifold5
17***60Roller As1
1H***96Packing,Preformed Cartridge Part Of Kit P/N 4j***801
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254-0614 Idler Gp-Track
25***14Idler Group-Track1
30***50Roller Group-Track-Double Flange6
30***52Roller Group-Track-Single Flange8
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323-8755 Link As-Track
21***56Ring-Toric2
21***57Seal Group-Duo-Cone2
32***55Link As-Track1
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289-3059 Link As-Track -Systemone
19***44Bolt; (M10x1.5x20-mm)2
21***59Collar1
24***94Bearing As-Tapered Roller2
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289-3057 Link As-Track Box -Link Box
24***78Roller As1
28***57Link As-Track Box; -Link Box1
3T***83Collar2
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264-9772 Link As-Track Box -Link Box, Offset
26***72Link As-Track Box; -Link Box, Offset1
30***96Collar-Track Roller2
6S***71Shaft1
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264-9767 Link As-Track Box -Link Box
21***56Ring-Toric2
21***57Seal Group-Duo-Cone2
26***67Link As-Track Box; -Link Box1
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302-6814 Roller Gp-Track
24***78Roller As1
30***96Collar-Track Roller2
30***14Roller Group-Track1
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282-8814 Roller Gp-Track -Sealed, Lubricated
21***56Ring-Toric2
21***57Seal Group-Duo-Cone2
28***14Roller Group-Track; -Sealed, Lubricated1
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302-6804 Roller Gp-Track -Systemone
30***96Collar-Track Roller2
30***04Roller Group-Track; -Systemone1
6S***71Shaft1
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282-8804 Roller Gp-Track -Systemone
21***56Ring-Toric2
21***57Seal Group-Duo-Cone2
28***04Roller Group-Track; -Systemone1
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6s-3609 Roller Gp-Track Carrier
09***17Pin-Cotter1
25***23Spring-Recoil1
25***48Plate1
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225-7650 Roller Gp-Track Carrier -Systemone
22***50Roller Group-Track Carrier; -Systemone1
26***85Track Group; -2-Required2
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281-8338 Roller Gp-Track-Double Flange
28***38Roller Group-Track-Double Flange1
28***45Track Group; -2-Required2
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301-0650 Roller Gp-Track-Double Flange
28***65Track Group; -2-Required, Systemone2
30***50Roller Group-Track-Double Flange1
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281-8339 Roller Gp-Track-Single Flange
19***89Shoe-Track42
19***90Shoe-Track Master1
28***39Roller Group-Track-Single Flange1
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301-0652 Roller Gp-Track-Single Flange
19***91Shoe-Track42
19***92Shoe-Track Master1
30***52Roller Group-Track-Single Flange1
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301-0654 Roller Gp-Track-Single Flange
23***58Shoe-Track38
26***40Link-Track2
28***59Link As-Track; -Systemone1
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243-3277 Roller Gp-Track-Single Flange
24***77Roller Group-Track-Single Flange1
32***95Track Group; -Self Cleaning2
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254-0603 Spring Gp-Recoil
25***03Spring Group-Recoil1
32***55Link As-Track1
4K***38Bolt-Track (9/16-18 X 1.625 In); Bolt-Track-(9/16 X 18 X 1.6 In)84
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286-4319 Track Ar -Systemone
13***93Hose As1
16***41Hose As1
16***11Clamp2
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286-4304 Track Ar
22***50Roller Group-Track Carrier; -Systemone2
24***18Guard Group-Idler1
25***93Idler Group-Front1
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319-9514 Track Ar
16***86Seal As-Buffer1
16***94Seal-U-Cup1
19***59Head1
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286-4309 Track Ar
24***24Guard Group-Track Guide1
24***00Idler Group-Front1
26***74Guard Group-Idler1
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286-4314 Track Ar -Systemone
12***21Disc; (Friction)6
20***18Housing; (Brake)1
20***20Spring Backup Plate1
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263-5385 Track Gp -2-Required
16***86Seal As-Buffer1
16***94Seal-U-Cup1
22***75Head1
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282-9045 Track Gp -2-Required
16***86Seal As-Buffer1
16***94Seal-U-Cup1
22***75Head1
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320-6195 Track Gp -Self Cleaning
16***86Seal As-Buffer1
16***94Seal-U-Cup1
1L***75Ring-Retaining2
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289-3066 Track Gp -Systemone
16***86Seal As-Buffer1
16***94Seal-U-Cup1
19***59Head1
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289-3065 Track Gp -2-Required, Systemone
16***86Seal As-Buffer1
16***94Seal-U-Cup1
19***59Head1
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244-7449 Undercarriage Ar
24***26Tank Group-Hydraulic1
24***49Undercarriage Ar1
24***52Pump Group-Gear; -Implement1
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244-7394 Undercarriage Ar -Systemone
21***04Mounting Group-Pump1
24***94Undercarriage Ar; -Systemone1
24***12Lines Group-Hydrostatic1
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Work Tools
6y-5838 Edge Gp-Bit & Cutting
23***52Film-Warning; (Laser Transmitter)3
25***44Film-Warning; (Blade, Do Not Climb, Read Omm)1
6Y***38Bit & Cutting Edge Group1
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255-2372 Blade Ar-Pwr Angle & Tilt -Xl Grade Control
15***51Spacer2
15***52Spacer4
17***55Cap; (Bearing)1
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255-2385 Blade Ar-Pwr Angle & Tilt
15***51Spacer2
15***52Spacer4
17***55Cap; (Bearing)1
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255-1486 Blade Ar-Pwr Angle & Tilt
25***57Link Group-Pitch1
25***86Blade Ar-Pwr Angle & Tilt1
31***61Blade Group-Angling; -Grade Control1
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255-1355 Blade Ar-Pwr Angle & Tilt -Lgp
25***55Blade Ar-Pwr Angle & Tilt; -Lgp1
25***57Link Group-Pitch1
25***83Blade Group-Angling; -Low Ground Pressure1
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255-1470 Blade Ar-Pwr Angle & Tilt -Lgp
25***57Link Group-Pitch1
25***70Blade Ar-Pwr Angle & Tilt; -Lgp1
31***51Blade Group-Angling1
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255-1502 Blade Ar-Pwr Angle & Tilt -Xl
15***51Spacer2
15***52Spacer4
17***55Cap; (Bearing)1
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255-2368 Blade Ar-Pwr Angle & Tilt -Lgp
15***51Spacer2
15***52Spacer4
17***55Cap; (Bearing)1
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312-8360 Blade Ar-Pwr Angle & Tilt
15***51Spacer2
15***52Spacer4
17***55Cap; (Bearing)1
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255-2381 Blade Ar-Pwr Angle & Tilt -Lgp Grade Control
15***51Spacer2
15***52Spacer4
17***97Edge Group-Bit & Cutting1
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255-1425 Blade Ar-Pwr Angle & Tilt -Xl
25***57Link Group-Pitch1
25***25Blade Ar-Pwr Angle & Tilt; -Xl1
25***94Blade Group-Angling; -Forestry1
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255-2390 Blade Ar-Pwr Angle & Tilt -Xl Grade Control
15***51Spacer2
15***52Spacer4
17***55Cap; (Bearing)1
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255-1394 Blade Ar-Pwr Angle & Tilt -Xl
25***57Link Group-Pitch1
25***94Blade Ar-Pwr Angle & Tilt; -Xl1
25***86Blade Group-Angling; -Xl Grade Control1
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312-8350 Blade Ar-Pwr Angle & Tilt
15***51Spacer2
15***52Spacer4
17***55Cap; (Bearing)1
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255-2375 Blade Ar-Pwr Angle & Tilt -Lgp, Grade Control
15***51Spacer2
15***52Spacer4
17***55Cap; (Bearing)1
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255-2378 Blade Ar-Pwr Angle & Tilt -Xl Grade Control
15***51Spacer2
15***52Spacer4
17***55Cap; (Bearing)1
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255-2393 Blade Ar-Pwr Angle & Tilt -Forestry
15***51Spacer2
15***52Spacer4
17***55Cap; (Bearing)1
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255-1413 Blade Ar-Pwr Angle & Tilt -Lgp
25***57Link Group-Pitch1
25***13Blade Ar-Pwr Angle & Tilt; -Lgp1
25***91Blade Group-Angling; -Xl Grade Control1
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255-1503 Blade Gp-Angling -Xl Grade Control
14***61Seal-O-Ring2
25***03Blade Group-Angling; -Xl Grade Control1
30***91Brake & Planetary Group-Winch1
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255-2376 Blade Gp-Angling -Low Ground Pressure
16***22Clutch-Freespool; (34-Teeth)1
16***75Freespool Spring1
16***80Retaining Ring1
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255-1362 Blade Gp-Angling -Low Ground Pressure
15***51Spacer2
15***52Spacer4
17***55Cap; (Bearing)1
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255-2391 Blade Gp-Angling -Xl Grade Control
11***99Gasket; (Air Conditioner Control)1
15***75Ladder Clip2
16***11Plug1
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255-2373 Blade Gp-Angling -Xl Grade Control
05***78Dowel Pin2
20***08Kicker Block; (Rh)1
20***09Kicker Block; (Lh)1
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255-1487 Blade Gp-Angling -Xl Grade Control
15***51Spacer2
15***52Spacer4
17***97Edge Group-Bit & Cutting1
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255-1395 Blade Gp-Angling -Xl Grade Control
15***51Spacer2
15***52Spacer4
17***97Edge Group-Bit & Cutting1
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255-2386 Blade Gp-Angling -Xl Grade Control
10***02Kit-Receptacle; (2-Pin)(Engine Sensor Wiring Harness)3
10***03Kit; (Receptacle) (3-Pin) (Includes Receptacle As & Wedge)1
10***05Kit-Receptacle; (6-Pin)(Display Monitor Harness)1
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312-8361 Blade Gp-Angling -Grade Control
11***99Gasket; (Air Conditioner Control)1
24***22Switch As-Rocker; (4th Valve)1
31***69Switch As-Rocker; (5th Valve, Float)1
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312-8351 Blade Gp-Angling
10***02Kit-Receptacle; (2-Pin)(Engine Sensor Wiring Harness)3
10***03Kit; (Receptacle) (3-Pin) (Includes Receptacle As & Wedge)1
10***05Kit-Receptacle; (6-Pin)(Display Monitor Harness)1
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255-1427 Blade Gp-Angling -Xl Grade Control
15***51Spacer2
15***52Spacer4
17***55Cap; (Bearing)1
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255-2383 Blade Gp-Angling -Low Ground Pressure
10***02Kit-Receptacle; (2-Pin)(Engine Sensor Wiring Harness)3
10***03Kit; (Receptacle) (3-Pin) (Includes Receptacle As & Wedge)1
10***05Kit-Receptacle; (6-Pin)(Display Monitor Harness)1
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255-1471 Blade Gp-Angling -Low Ground Pressure
15***51Spacer2
15***52Spacer4
17***97Edge Group-Bit & Cutting1
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255-2394 Blade Gp-Angling -Forestry
11***99Gasket; (Air Conditioner Control)1
24***22Switch As-Rocker; (4th Valve)1
25***94Blade Group-Angling; -Forestry1
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255-1414 Blade Gp-Angling -Low Ground Pressure
15***51Spacer2
15***52Spacer4
17***55Cap; (Bearing)1
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255-2379 Blade Gp-Angling -Xl Grade Control
10***02Kit-Receptacle; (2-Pin)(Engine Sensor Wiring Harness)3
10***03Kit; (Receptacle) (3-Pin) (Includes Receptacle As & Wedge)1
10***05Kit-Receptacle; (6-Pin)(Display Monitor Harness)2
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255-2370 Blade Gp-Angling -Low Ground Pressure
20***31Sun Gear1
21***69Planetary Group-Winch; (Refer Below)1
21***71Gear Group-Winch Transfer; (Refer To Page 6)1
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309-5091 Brake & Planetary Gp-Winch
21***04Mounting Group-Pump1
24***12Lines Group-Hydrostatic1
24***04Control Group-Winch1
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309-5090 Brake & Planetary Gp-Winch
11***99Gasket; (Air Conditioner Control)1
15***70Kit-Connecting Plug; (2-Pin)(Engine Sensor Wiring Harness)2
18***40Socket-Connector; (14-Ga To 18-Ga)(14-Ga To 18-Ga)4
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208-5546 Case Gp-Winch
20***46Case Group-Winch1
3F***08Bolt-Plow; (5/8-11x2.25-In)22
4K***67Nut Rear Support To Frame22
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208-5552 Clutch & Gear Gp-Winch
15***38Edge-Cutting2
20***52Clutch & Gear Group-Winch1
3F***08Bolt-Plow; (5/8-11x2.25-In)20
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318-6112 Control Gp-Winch -4th & 5th Valve, Float
1F***71Bearing-Ball (Note D)1
1S***43Ball Bearing1
20***32Carrier-Bearing1
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244-7504 Control Gp-Winch
24***04Control Group-Winch1
25***29Edge-Cutting2
3F***08Bolt-Plow; (5/8-11x2.25-In)18
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249-9052 Control Gp-Winch
24***52Control Group-Winch1
25***05Edge-Cutting2
2J***06Nut Front Support To Frame; Nut-Front Support To Frame20
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318-6110 Control Gp-Winch -4th Valve, Float
11***16Retaining Ring1
11***95Retaining Ring1
12***10Spacer; (2x2.75x0.125-In Thk)(3.18mm Thk)2
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318-6108 Control Gp-Winch
13***04Switch As-Pressure; (Power Train Oil Filter Bypass)1
14***91Filter-Oil; (Advanced Efficiency)1
31***08Control Group-Winch1
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271-9180 Drive Ar-Winch -Hydraulic
20***29Motor Group-Piston; -Winch1
27***80Drive Ar-Winch; -Hydraulic1
3D***24O-Ring - For Oil Drain & Level Plug (Items 3 & 7)1
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255-1501 Edge Gp-Bit & Cutting
19***18Plug8
19***82Washer-Hard; (26x47x12-mm Thk)14
24***18Plate As1
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255-1472 Edge Gp-Bit & Cutting -Level Cut
13***56Plate1
21***57Pin-Drawbar1
25***72Edge Group-Bit & Cutting; -Level Cut1
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179-2897 Edge Gp-Bit & Cutting
17***97Edge Group-Bit & Cutting1
25***44Film-Warning; (Blade, Do Not Climb, Read Omm)1
8T***23Washer-Hard; (13.5x25.5x3-mm Thk)(Bolt To Shield)8
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255-1428 Edge Gp-Bit & Cutting -Level Cut
16***70Pin1
17***31Bar4
18***38Pin4
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255-1426 Edge Gp-Bit & Cutting -Level Cut
25***26Edge Group-Bit & Cutting; -Level Cut1
3E***56Washer-Hard; (17.5x30x6-mm Thk)2
7J***85Seal-O-Ring1
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255-1505 Edge-Cutting
12***86Roller Bearing6
12***07Bearing Race, Line6
20***29Carrier-Planetary1
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201-2744 Filter Gp-Oil -Hydraulic
20***44Filter Group-Oil; -Hydraulic1
25***61Mounting Group-Ripper1
26***08Ripper Group1
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208-5551 Gear Gp-Winch
17***31Bar4
18***29Link2
20***51Gear Group-Winch1
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211-8171 Gear Gp-Winch Transfer
16***17Drag Brake Disc1
1J***34Seal-Lip Type2
1P***34Cup-Roller Bearing (145.0mm Od)2
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208-5549 Motor & Mtg Gp-Winch
13***63Pin-G.E.T.1
14***33Retainer As; (G.E.T.)1
1U***57Shank-Ripper1
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292-0303 Mounting Gp-Mast -Satellite Receiver
20***46Case Group-Winch1
20***47Shaft Group-Winch Drum1
20***49Motor & Mtg Group-Winch1
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292-0302 Mounting Gp-Mast -Laser Receiver
12***51Cover2
14***16Connector Group1
14***36Adapter; (Straight) (-6 Orb X -6 Orfs)1
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217-2004 Mounting Gp-Pump
21***04Mounting Group-Pump1
25***61Film-Information; (Cat Power, Acert Technology)2
27***65Film-Identification; (Caterpillar)1
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258-4961 Mounting Gp-Ripper
25***61Film-Information; (Cat Power, Acert Technology)2
25***61Mounting Group-Ripper1
27***65Film-Identification; (Caterpillar)1
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208-5553 Mounting Gp-Winch
1L***72Dowel (Part Of 8s***99 Assem.)1
20***53Mounting Group-Winch1
24***41Padlock Group; (1 On Fuel Tank Cap) (1 On Hydraulic Tank Cap) (1 On Grill Latch)2
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244-7517 Mounting Gp-Winch
13***58Film; (Identification) (On Radiator Filler Cap) (On Near Of Radiator Filler Cap)1
16***70Film; (No Step)2
16***76Film; (Identification) (12v) (On Rear Console Behind Operators Seat)1
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211-8169 Planetary Gp-Winch
13***58Film; (Identification) (On Radiator Filler Cap) (On Near Of Radiator Filler Cap)1
15***64Film; (Instruction) (Hydraulic Oil) (On Forward Of And Above The Hydraulic Tank Sight Gage On Tank Surface)1
16***70Film; (No Step)2
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262-4407 Ripper Ar
13***58Film; (Identification) (On Radiator Filler Cap) (On Near Of Radiator Filler Cap)1
16***70Film; (No Step)2
16***76Film; (Identification) (12v) (On Rear Console Behind Operators Seat)1
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262-4408 Ripper Gp
208-5547 Shaft Gp-Winch Drum
9j-1137 Tooth Gp-Ripper
256-3739 Valve & Lines Gp-Winch
256-3738 Winch Ar

D4K XL serial number reference

The PIN plate is a stamped metal tag riveted to the mainframe on the operator's-cab side of the machine; Cat also stamps the number in at least one or two backup spots on the frame. To read it, take the last 8 characters of the 17-character PIN: skip the model code and the single check character right after it, then the next 3 letters are the serial number prefix and the final 5 digits are the sequence number.

PrefixIdentifies
MMMD4K XL (K-Series small track-type tractor, XL/extended undercarriage configuration)

Frequently asked questions

What engine does the Cat D4K XL use?

A Cat C4.4 ACERT four-cylinder diesel, rated 68.6 kW (92 hp) gross and 62.6 kW (84 hp) net at 1900 rpm. This generation meets U.S. EPA Tier 3 / EU Stage IIIA emissions rules.

What is the operating weight of the D4K XL?

Around 8.15 t (17,961 lb) in the XL track-frame configuration. Actual weight varies with blade choice (6-way VPAT vs. straight SU), undercarriage option (sealed-and-lubricated vs. SystemOne), and attachments such as a winch.

What replaced the Cat D4K XL?

The Cat D4K2 XL. It carries the same C4.4 ACERT engine family and Hystat dual-path drive architecture forward but adds Tier 4 Final emissions aftertreatment. The D4K XL itself had replaced the earlier D4G in Cat's small-dozer lineup.

What D4K XL owners discuss

How well does the D4K XL's hydrostatic (Hystat) drive hold up over time?
The Hystat drive is a dual-path, closed-loop hydrostatic system. It gives smooth steering and counter-rotation without a torque converter or gear-shift transmission. Owners and mechanics report it holds up well under disciplined maintenance. Clean hydraulic oil and on-schedule filter changes matter more than raw hours. Well-kept units are reported running well past 6,000 hours on the original drive components. A hydrostatic failure is costly to fix because debris from a failed pump or motor circulates through the whole closed loop and can take out other components with it. Keep hydraulic oil analysis on a routine schedule and don't stretch filter intervals.
Is the hydrostatic drive more failure-prone than an older mechanical/powershift dozer?
Community opinion leans toward different risk rather than worse risk. With proper maintenance, Hystat drives are reported to last comparably to powershift transmissions, and both are expensive to rebuild when they finally go. The practical difference: a powershift failure tends to stay contained, while a hydrostatic failure spreads contamination through the closed loop and can damage several components at once. That makes the cost curve steeper on machines with a thin maintenance history. Long-time operators say judge the individual machine's fluid-change record, not the drive type alone.
What undercarriage wear patterns and configuration choices come up for the XL?
XL is the standard-flotation undercarriage on this platform, versus the wider LGP undercarriage for soft ground. Base machines commonly run a sealed-and-lubricated track chain; SystemOne is available as an upgrade. Owners who have run both say SystemOne wears more evenly over its life because the rotating-bushing design removes the need for periodic bushing turns. Ground conditions drive wear speed more than anything else - abrasive, rocky, or high-cycle grading work chews through pads and chain far faster than turf or loam. A full undercarriage renewal on this size class is a major expense, commonly quoted in five figures for parts alone, so inspect and budget accordingly before buying. Track sag should sit in roughly the 50-64 mm (2-2.5 in) range, checked and adjusted through the idler's grease-fitting adjuster.
What's the story with the electronic throttle/RPM dial acting up?
A recurring complaint on this platform's electronic throttle dial: the machine holds set RPM fine for an unpredictable stretch, then drops to idle on its own. The dial stops responding and a service/warning light blinks, with hydraulic response affected until the machine is cycled or reset. This points to a wiring, connector, or switch fault in the throttle control circuit rather than an engine mechanical problem. Before assuming an ECM failure, check harness connectors and the dial switch itself. Because an unexpected RPM or hydraulic drop mid-task can catch an operator off guard, especially on a grade, have your dealer pull fault codes and verify the fix with the electronic service tool before returning the machine to full duty.
Any known quirks with the C4.4 ACERT engine on this machine?
The C4.4 common-rail engine on this platform is generally regarded as a solid, reliable unit for its size class. The most common complaint tied to it is fuel filtration neglect: clogged fuel filters show up as reduced power, higher fuel consumption, and rough running once the common-rail injection system is starved or fed dirty fuel. Staying ahead of fuel filter and water-separator change intervals, and using clean fuel, resolves most of what gets blamed on engine problems. The D4K XL carries the Tier 3-rated version of this engine, so it does not run a diesel particulate filter or active regeneration cycle. That's a feature of the later D4K2 (Tier 4 Final) version of this platform, which brings its own soot-load and low-ash-oil requirements. Confirm which generation you're looking at before assuming DPF-related maintenance applies.
What do owners say about the VPAT blade controls on the XL?
The variable-pitch-angle-tilt (VPAT) blade itself draws no complaints for float or finish-grading performance. The gripe is ergonomic: the manual thumbwheel used to adjust blade angle is described as slow and tedious for repeated angle changes, and more than one operator has flagged hand fatigue from it on long shifts. It's a known annoyance, not a functional defect.
What should I specifically check before buying a used D4K XL?
Start at the undercarriage. Confirm whether it's the sealed-and-lubricated track or SystemOne, measure actual pad and chain wear instead of trusting the seller's estimate, and check track sag against the 50-64 mm (2-2.5 in) spec. Cycle the hydrostatic drive through forward, reverse, and turns; watch for lag, hunting, or hydraulic oil temperature climbing quickly, all signs of pump or motor wear. Run the engine under load and watch for smoke, power loss, or the throttle dial dropping to idle on its own - a known intermittent fault on this platform (have your dealer check fault-code history if it happens during your test). Inspect the blade, push arms, and trunnion pins for weld repairs or reinforcement plates that suggest past structural stress. Pull maintenance records and check fluid color and condition, especially hydraulic oil, since a Hystat machine punishes skipped fluid changes harder than a mechanical dozer does. Confirm which generation you're actually looking at, since the D4K XL and the newer D4K2 differ in emissions equipment and upkeep.

Compiled from owner and technician discussions across the industry — experiences vary by serial range and machine history.

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