Caterpillar PL61
Caterpillarpipelayer(no series)

Caterpillar PL61

Maintenance schedule, common problems & OEM parts breakdown

The Caterpillar PL61 is a crawler pipelayer, or sideboom, built to lift, lower, and move pipe sections into the trench on pipeline construction jobs. It rides on a D6K-derived crawler-tractor chassis with hydrostatic drive and a SystemOne undercarriage, carries a single 5.49 m (18 ft) box-section boom rated at 18,145 kg (40,000 lb) lift, and adds an extendible 2,980 kg (6,570 lb) counterweight. Cat introduced the PL61 as a replacement for the 561N, initially fitted with a Cat C6.6 ACERT engine (Tier 3/Stage IIIA equivalent, about 93 kW/125 hp). A later series carries a Cat C4.4 ACERT engine (Tier 4 Final/Stage IV, about 97 kW/130 hp), with an alternate Cat C7.1 engine offered for markets with lighter emissions requirements. Operating weight runs roughly 17,000-18,640 kg (37,480-41,095 lb) depending on track shoe width - narrow 560 mm (22 in) or low-ground-pressure 760 mm (30 in) - and series.

The shift from the Tier 3 C6.6 to the Tier 4 Final C4.4 brought DEF aftertreatment, a revised hydraulic-demand-fan cooling package, faster steering response, and options like a rear-vision camera and load monitor indicator (LMI), all while holding the same 40,000 lb rated lift. In the used and parts market, the PL61 matters because it shares hydrostatic-drive and SystemOne-undercarriage components with the D6K dozer line, which widens the parts pool for owners. Confirm engine family (C6.6 versus C4.4/C7.1) and track shoe width before ordering parts, since emissions hardware and undercarriage components differ across generations. Demand concentrates on winch and wire-rope wear items, hydrostatic components, and undercarriage wear parts given the duty cycle of pipeline right-of-way work.

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 PL61 specifications

Engine

Engine model (early/mid-production series)Cat C6.6 ACERT, turbocharged and aftercooled, common rail fuel system, inline 6-cylinder. Documented on factory spec sheets through at least 2013.
Engine model (later production series)Cat C4.4 ACERT for markets requiring Tier 4 Final/Stage IV emissions. A Cat C7.1 turbocharged diesel is offered as an alternate engine for markets that only require Tier 3/Stage IIIA-equivalent emissions.
Flywheel/net power (C6.6 series)93 kW (125 hp) at 2100 rpm. Net power: 93.2 kW (125 hp) per Caterpillar, ISO 9249 and EEC 80/1269 ratings; 92.1 kW (123.4 hp) per SAE J1349.
Flywheel/net power (C4.4 series)97 kW (130 hp) at 2200 rpm, per ISO 9249.
Displacement and configuration (C6.6 series)6.6 L (403 in3), inline 6-cylinder, 105 mm bore x 127 mm stroke (4.13 in x 5.00 in).
Displacement and configuration (C4.4 series)4.4 L, 4-cylinder, per the Cat C4.4 engine family designation. Machine-specific bore and stroke for the PL61 application are not separately published.
Emissions tier (C6.6 series)U.S. EPA Tier 3, EU Stage IIIA, Japan MOC Step 3.
Emissions tier (C4.4 series)U.S. EPA Tier 4 Final, EU Stage IV, Korea Tier 4 Final, Japan 2014 (Tier 4 Final).
Emissions tier (C7.1 alternate, lower-tier markets)Equivalent to Tier 3/Stage IIIA (China Nonroad Stage III, India Bharat Stage III).
Altitude derating (C6.6 series)No derating required up to 3000 m (9,842 ft) altitude; automatic derating occurs above that altitude.

Weights

Operating weight, narrow shoes (C6.6 series)17 000 kg (37,480 lb) with 560 mm (22 in) narrow track shoes.
Operating weight, LGP shoes (C6.6 series)17 800 kg (39,242 lb) with 760 mm (30 in) LGP track shoes.
Shipping weight, narrow shoes (C6.6 series)16 070 kg (35,428 lb).
Shipping weight, LGP shoes (C6.6 series)16 870 kg (37,192 lb).
Operating weight, 22 in shoes with cab (C4.4 series)approximately 18,090 to 18,170 kg (39,890 to 40,060 lb); varies by cab/canopy and other configuration options.
Operating weight, 30 in shoes with cab (C4.4 series)approximately 18,560 to 18,640 kg (40,920 to 41,095 lb); varies by configuration.
Shipping weight, 22 in shoes (C4.4 series)approximately 17,040 to 17,110 kg (37,570 to 37,720 lb).
Shipping weight, 30 in shoes (C4.4 series)approximately 17,510 to 17,590 kg (38,600 to 38,780 lb).
Ground pressure (C6.6 series)56.3 kPa (8.2 psi) with narrow shoes; 43.4 kPa (6.3 psi) with LGP shoes.
Ground pressure (C4.4 series)40.7 to 54.5 kPa (5.9 to 7.9 psi); varies by shoe width and configuration.
Extendable counterweight2 980 kg (6,570 lb) maximum extended; 1 231 kg (2,714 lb) portion counted in the rated-load chart when fully extended. Consistent across both engine series.

Dimensions

Operating length3.78 to 3.85 m (149 to 151 in); varies slightly by series. Standard 5.49 m (18 ft) boom fitted.
Machine width, counterweight retracted3.00 m (118 in) narrow shoes; 3.20 to 3.24 m (126 to 128 in) LGP shoes; varies by series and shoe width.
Machine width, counterweight extended4.41 to 4.43 m (174 to 175 in) on documented C6.6-series configurations. Later-series listings cite up to about 4.75 m (187 in) for extended counterweight; treat as approximate and varying by configuration/series.
Machine height to top of ROPS canopy/cab2.96 to 3.00 m (116.5 to 118 in); varies slightly by series.
Machine height, tip of winch (boom stowed)2.454 m (97 in).
Boom height at 1.22 m (4 ft) overhang6.18 to 6.22 m (243 to 245 in); minor variance across sources/series.
Track gauge1.77 m (70 in) narrow configuration; 2.00 m (79 in) LGP configuration.
Length of track on ground2.645 m (104 in).
Ground clearance360 mm (14.2 in), per SAE J1234.
Drawbar height483 mm (19 in).
Grouser height48 mm (1.9 in).

Performance

Travel speed0 to 10 km/h (0 to 6.2 mph), infinitely variable in forward and reverse. Electronically controlled, dual-path closed-loop hydrostatic drive gives independent power and control to each track, enabling smooth power turns and counter-rotation. Consistent across both engine series.
Lift capacity18 145 kg (40,000 lb) rated lift capacity at the hook, per ISO 8813 tipping-point rating. Standard rigging is a 3-part load line and 3-part boom line using 16 mm (5/8 in) wire rope rated at 183.3 kN (41,200 lb) minimum breaking strength.
BoomStandard boom length is 5.49 m (18 ft); high-tensile-strength steel box-section construction.
Boom line speed46 m/min (151 ft/min).
Hook (load line) speed, bare drum33 m/min (108 ft/min) low range; 69.5 m/min (228 ft/min) high range.
Hook speed, 2-part line16.5 m/min (54 ft/min) low range; 34.8 m/min (114 ft/min) high range.
Hook speed, 3-part line11 m/min (36 ft/min) low range; 23.2 m/min (76 ft/min) high range.
Gradeabilitynot published for this model.

Service capacities (summary)

Fuel tank (C6.6 series)295 L (77.9 gal).
Fuel tank (C4.4 series)260 L (69 gal), plus a separate 19 L (5 gal) DEF tank for the emissions aftertreatment system.
Hydraulic tank (C6.6 series)58 L (15.3 gal).
Hydraulic pump output and relief pressure (C6.6 series)Variable, piston-type, two-section pump; maximum output 540 L/min (142 gal/min). Counterweight-circuit relief valve set at 17 237 kPa (2,500 psi).
Engine crankcase, with filter (C6.6 series)16.5 L (4.35 gal).
Final drive oil, each side (C6.6 series)23 L (6 gal).
Cooling system (C6.6 series)24.4 L (6.4 gal).
Service capacities (C4.4/C7.1 series)Hydraulic, crankcase, final drive and cooling system capacities for the later C4.4/C7.1-engine series are not separately published in available sources; confirm with a dealer for the specific serial range.

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

PL61 fluids & capacities

SystemCapacityRecommended fluid
Engine crankcase (with filter) - Cat C6.6 ACERT16.5 L (4.35 US gal)Cat DEO or Cat DEO-ULS multigrade diesel engine oil, API CH-4 (later emissions-certified builds call for an ECF-approved low-ash oil). Warm-climate fill is SAE 15W-40; cold-climate fill is SAE 10W-30; extreme cold regions step down further per the OMM ambient-temperature chart.
Cooling system24.4 L (6.4 US gal)Cat ELC (Extended Life Coolant/Antifreeze). Standard factory fill is rated to -37 C (-35 F); a heavier cold-region ELC rated to -50 C (-58 F) is offered as an attachment for arctic service.
Fuel tank295 L (77.9 US gal) on the Cat C6.6 ACERT build; later emissions-tier builds with a Cat C4.4/C7.1 engine list a smaller main tank near 260 L (69 US gal) plus a separate DEF tank - capacity varies by engine/emissions configurationUltra-low-sulfur diesel fuel. Machine includes an integrated fuel/water separator and electric priming pump; an optional fast-fill tank is offered.
Diesel Exhaust Fluid (DEF) tank - later Tier 4 Final builds only19 L (5 US gal)Diesel Exhaust Fluid meeting the ISO 22241 urea-solution spec, used with the SCR aftertreatment fitted to the later emissions-certified engine option. Not fitted on the earlier Cat C6.6 ACERT build, which has no DEF system.
Hydraulic system / hydrostatic drive (shared tank)58 L (15.3 US gal)Cat HYDO Advanced is the preferred fluid for the combined implement-hydraulic and closed-loop hydrostatic-drive circuit: SAE 10W for cold ambient, SAE 30 for hot ambient. Cat TDTO is an accepted second-choice fluid for the same shared circuit.
Final drives (each side)23 L (6 US gal) per sideCat TDTO (TO-4 spec transmission/drive-train oil). SAE 10W for cold climates (pour point near -36 C / -33 F), SAE 30 for moderate ambient, SAE 50 for hot climates.
Grease - boom, winch, hook-block and counterweight pin jointsNot applicable - serviced per grease fitting on a set interval, no reservoir fill capacity specifiedCat multipurpose extreme-application grease, NLGI 2, moly-fortified. Track rollers and idlers on this machine are sealed/lifetime-lubricated and require no field greasing.

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

Caterpillar PL61 maintenance schedule

Service intervalTasks
Every 10 h
  • Check engine oil level, coolant level, and fuel level, and drain the fuel/water separator.
  • Inspect boom hoist and hook draw-works wire ropes for wear, kinks, or broken strands.
  • Grease boom foot pins, boom point sheave, and counterweight-extension linkage points.
  • Walk around the SystemOne undercarriage checking track tension, loose shoe hardware, and packed debris.
  • Check DEF level and quality on Tier 4 Final units and watch for aftertreatment warning lamps.
  • Test seat belt, back-up alarm, rear-vision camera/LMI display, and ROPS/FOPS mounting hardware.
Every 250 h
  • Change engine oil and filter and pull an oil sample for analysis.
  • Replace fuel filters and drain the water separator bowl.
  • Grease all boom, sideboom counterweight, and swing-frame pivot points per the lube chart.
  • Inspect and adjust winch brake bands and clutch packs on the boom and hook draw works.
  • Check hydrostatic drive fluid level and inspect pump/motor lines and fittings for leaks.
  • Service the engine air filter primary element if the service indicator calls for it.
Every 500 h
  • Sample hydrostatic transmission fluid and final drive oil for analysis.
  • Replace hydraulic system filters on the implement and hoist circuits.
  • Inspect track rollers, idlers, and sprockets for wear and check SystemOne roller-frame seals.
  • Torque-check track shoe bolts and inspect grouser wear.
  • Inspect the alternator belt/tensioner and battery terminals and test the charging system.
  • Check DEF injector and dosing system operation on Tier 4 Final units.
Every 1,000 h
  • Change hydraulic (implement/hoist) oil and filters and inspect the hydraulic tank breather.
  • Replace fuel filter elements at the full-change interval.
  • Inspect boom hoist and hook draw-works wire ropes closely and replace any past wear limits.
  • Check and adjust track sag and rear idler cushion.
  • Inspect the turbocharger, engine mounts, and aftertreatment housing for cracks or leaks.
  • Verify winch overload protection and LMI (load monitor indicator) calibration.
Every 2,000 h
  • Change hydrostatic drive-train oil and filters.
  • Change final drive oil.
  • Sample engine coolant condition and replace ELC coolant if extended-life additive is depleted.
  • Inspect swing-frame bearings, boom foot pins/bushings, and A-frame structure for wear or cracking.
  • Replace the engine air filter secondary element.
  • Inspect the counterweight-extension mechanism and mounting hardware for structural wear.
Every 4,000 h
  • Overhaul boom hoist and hook draw-works winch clutch and brake assemblies.
  • Replace wire ropes on a fixed calendar basis regardless of visible wear, given rope fatigue life.
  • Recondition SystemOne undercarriage rollers, idlers, sprockets, and track chain once wear limits are reached.
  • Send the hydrostatic pump/motor and final drives for shop teardown if oil analysis shows rising wear-metal trends.
  • Fully renew engine coolant once beyond the extended-life interval.
  • Have ROPS/FOPS structure and boom welds inspected for fatigue cracking.

Servicing the PL61 beyond the schedule

Predictive Maintenance & Fluid Analysis

Run S.O.S oil sampling on the engine, hydrostatic drive, and final drives every 250-500 hours; the PL61's hydrostatic pump and motor share wear signatures with the D6K platform, so rising iron and copper trends flag pump-motor wear before drive failure. Track DEF quality and dosing on C4.4 Tier 4 Final units, since SCR faults surface as derates before a breakdown. Watch coolant condition on C6.6 and C4.4 variants for ELC additive depletion, and log wire-rope diameter loss and hydraulic filter differential-pressure trends to schedule winch service ahead of failure.

Corrective & Common Repairs

Common PL61 repairs center on the boom hoist and hook draw-works winches, where brake bands, clutch packs, and wire rope wear from repeated pipe lift-and-lower cycles. Hydrostatic drive leaks show up at pump and motor case fittings and swivel joints on higher-hour machines. The SystemOne undercarriage sees sprocket segment and roller-frame seal wear on rocky right-of-way terrain. Tier 4 Final C4.4 units add DEF doser and NOx sensor troubleshooting; earlier Tier 3 C6.6 units instead see turbo and injector wear typical of that common-rail engine.

Overhaul & Rebuild Points

Major rebuild points are the boom foot pins and bushings and the A-frame pivot bearings, which take repeated shock loading from pipe handling and eventually need bore machining or bushing replacement. Overhaul the hydrostatic pump, motor, and final drive assemblies once oil analysis shows sustained wear-metal trends rather than at a fixed hour mark. Winch drums, brake bands, and clutch packs need full teardown at high hours. SystemOne undercarriage rollers, idlers, sprockets, and track chain reach wear limits together and are usually rebuilt as a set.

Seasonal & Environment Servicing

Cold-weather starts call for correct-viscosity engine oil, block-heater use, and fuel treated against gelling, since PL61s work pipeline right-of-way jobs through winter. DEF freezes below -11C (12F); keep the C4.4 Tier 4 Final tank protected and let it thaw before startup. In wet, muddy trench work, flush SystemOne undercarriage components more often so packed mud does not accelerate roller-frame and sprocket wear. On hot, dusty desert pipeline routes, clean the air filter and radiator screen more often to protect the hydraulic-demand-fan cooling package.

PL61 common service parts

Part numberPart
306-9199Filter As-FuelCheck fitment →
220-8678Seal-RingCheck fitment →
326-1644Filter As-Water Sep & FuelCheck fitment →
252-5001Filter Element As-AirCheck fitment →
252-5002Filter Element As-AirCheck fitment →

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

PL61 fault codes & troubleshooting

CodeMeaningLikely causeWhat to do
CID 0100 FMI 01Engine oil pressure below normalLow oil level, worn oil pump, plugged filter, or a genuine low-pressure condition at idle/altitudeStop engine safely, check oil level and filter condition before restart; confirm with Cat ET if code repeats
CID 0100 FMI 03Engine oil pressure sensor circuit voltage above normalOpen circuit or short to battery voltage in the oil pressure sensor wiring, not an actual pressure problemInspect sensor connector and harness for damage or corrosion before replacing the sensor
CID 0110 FMI 00Engine coolant temperature above normalLow coolant level, blocked radiator core, failed thermostat, or slipping/failed fan driveShut down and let engine cool, check coolant level and radiator for debris, verify fan operation
CID 0110 FMI 03Engine coolant temperature sensor circuit voltage above normalOpen circuit or short to +battery on the coolant temperature sensor wiringCheck sensor connector and wiring continuity, clean or repair connections, retest before sensor replacement
CID 0102 FMI 03/04Boost (intake manifold) pressure sensor circuit fault, voltage above or below normalDamaged sensor, pinched or corroded harness, or loose connector on the boost pressure sensor circuitInspect sensor wiring and connector, clear code and monitor; replace sensor if fault is active and persistent
CID 0190 FMI 08Engine speed/timing sensor abnormal frequency, pulse width, or periodIncorrect sensor air gap, sensor tip damage, or debris on a crank/cam speed-timing sensorCheck sensor air gap and condition, clean or reset gap per spec, inspect wiring for chafe points
CID 0168 FMI 01Battery/system voltage below normalWeak or failing battery, poor ground connection, faulty alternator/charging system, or excessive parasitic drawLoad-test batteries, check charging system output and ground straps, repair before returning to service
CID 0041 FMI 03/048-volt sensor supply voltage circuit fault, short to power or short to groundShared sensor supply circuit shorted, often triggers multiple related sensor codes at onceTrace the 8V supply harness for chafe or moisture intrusion before condemning individual sensors
SPN 3714 FMI 0 (SCR/DEF derate)Aftertreatment SCR system derate due to DEF quality or dosing fault (Tier 4 Final C4.4-equipped units only)Low, contaminated, frozen, or expired DEF, or a faulty DEF dosing/quality sensorCheck DEF level and quality first, refill or replace DEF, then rerun the aftertreatment diagnostic if derate remains

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

PL61 attachments & work tools

Boom system

Single standard boom length for this class: 5.49 m (18 ft), high-tensile box-section steel construction with replaceable boom-mount bearings. Unlike the larger PL72/PL83 pipelayers (which offer two boom-length choices), the PL61 is factory-built with this one boom only — no shorter/longer boom option is documented for this model.

Counterweight

Extendible counterweight rated at 2,980 kg (6,570 lb), extended and retracted hydraulically to adjust lift radius, stability, and visibility. Contoured shape keeps center of gravity low; this is the only counterweight size offered for the PL61, unlike heavier pipelayers that step up counterweight mass with boom length.

Hook and rigging

Forged hook with safety latch and serviceable handle, plus hook and boom blocks on sealed roller bearings with ductile-iron sheaves. Rated lift capacity is 18 145 kg (40,000 lb); a Load Monitor Indicator is delivered ready-to-install (activation/use sometimes treated as the optional step).

Winch / hydraulic arrangement

Boom and hook lines are each driven by an independent hydraulic winch off the closed-loop hydrostatic drive, giving infinite speed adjustment through the working range rather than a mechanical clutch-and-brake drum setup. No separate bolt-on hydraulic kit is needed since the winch circuit is built into the base machine's hydrostatic system.

Drawbar and towing coupling

Rigid drawbar and a front pull device are standard equipment, used to tow ancillary pipeline gear. The boom/counterweight/winch package itself is a factory-installed pipelayer kit fixed to the tractor chassis, not a field quick-coupler attachment — there is no documented quick-attach system for swapping work tools on this machine.

Undercarriage / track configuration

Offered with standard 560 mm (22 in) track shoes for a narrower transport profile (shippable under about 3 m/9.8 ft without disassembly) or LGP shoes at 760 mm (30 in) with a longer track frame for flotation in soft ground. Ground pressure runs roughly 7.8-7.9 psi standard versus about 5.9 psi in LGP trim; shares its oval-track SystemOne undercarriage with the D6K-class tractor base.

Guarding package

Standard protective package includes a hinged crankcase guard, hinged radiator grille guard, fuel tank guard, end/idler track-guiding scrapers, and lockable engine enclosures, aimed at pipeline and underground-construction duty.

Cab / operator configuration

Choice of open ROPS canopy (vinyl seat, heated canopy available) or enclosed ROPS cab (cloth seat), both with electro-hydraulic seat-mounted controls, adjustable armrests, and a rear-window quick-exit release.

Vision and load-safety technology

Camera-based Cat Detect options (rear camera, smart camera, surround cameras) plus seat-belt reminder are offered for jobsite visibility and safety, alongside the load-monitor readiness noted above and optional machine telematics.

Bare-chassis build option

At least one dealer configurator lists a no-boom build option, i.e. the base tractor ordered without the pipelayer boom/counterweight/winch kit. Treat this as an uncommon special-order configuration rather than a standard catalog trim — confirm availability with a dealer.

Engine / generation note

Sources disagree on the PL61's engine across its production run: earlier listings and the original launch materials cite a Cat C6.6 ACERT rated 93 kW (125 hp) at 2,100 rpm, while current dealer configurator pages cite a Cat C4.4 ACERT rated 97 kW (130 hp) at 2,200 rpm meeting Tier 4 Final/Stage IV. This looks like a genuine mid-life engine change on the same model designation rather than a mix-up with a different model — verify engine family against the machine's serial prefix before ordering engine-specific parts.

All PL61 assemblies by section

Every catalogued assembly group for the Caterpillar PL61. Open an assembly to preview the parts inside — full OEM part numbers are available in Heavy Parts AI.

Air Inlet And Exhaust System
266-9247 Air Cleaner Gp
23***88Gasket-Inlet1
26***47Air Cleaner Group1
27***02Dowel2
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249-3720 Air Cleaner Gp
23***30Gasket-Inlet1
24***20Air Cleaner Group1
28***91Elbow As1
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240-8552 Air Cleaner Gp
10***51Hose1
13***98Clip1
20***45Mount; (Dual Swivel)1
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249-3721 Lines Gp-Air -Ataac
19***77Washer-Hard; (11x25x10-mm Thk)6
24***21Lines Group-Air; -Ataac1
29***38Muffler As1
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280-1292 Manifold Gp-Inlet -Air
03***47Ferrule3
03***14Nut; (7/16-In)1
06***07Plug1
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249-3723 Muffler Gp
10***03Elbow1
17***18Elbow As2
18***95Vent As1
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243-2157 Pipe Gp-Exhaust
19***75Cover As-Filter; (Fuel Cap)1
24***57Pipe Group-Exhaust; -Long1
9X***00Seal-O-Ring1
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305-5970 Turbocharger Gp
16***58Cap Group-Fuel Filler; -Extreme Service, Lockable1
30***70Turbocharger Group1
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Basic Engine
279-8837 Camshaft Gp
1B***36Key-Woodruff1
27***25Tappet12
27***26Rod-Push12
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277-4224 Cover Gp-Engine -Pto
03***20Clip1
12***15Bolt; (M8x16x1.25-mm)1
12***81Clip1
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305-8963 Cover Gp-Valve Mechanism
03***20Clip1
12***15Bolt; (M8x16x1.25-mm)1
12***81Clip1
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279-8762 Crankshaft Gp
20***19Bolt; (M8x1.25x16-mm)8
27***62Crankshaft Group1
29***86Housing-Rear1
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277-6990 Cylinder Block Gp
06***43Plug-Side-(1.251 Dia.)5
10***41Bolt; (M6x1x10-mm)6
18***84Dowel2
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279-8711 Cylinder Block Gp
19***51Seal-O-Ring1
23***22Plug1
27***16Plug-Core6
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306-6845 Cylinder Block Gp
17***41Head-Gasket1
27***34Bolt-Special; (Cylinder Head)14
30***45Cylinder Block Group1
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309-6663 Cylinder Head As
27***88Gear-Starting Motor Ring; (134-Teeth)1
27***54Bolt12
30***63Cylinder Head As1
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279-8821 Cylinder Head Gp
10***41Bolt; (M12x1.75x25-mm)3
27***18Seal1
27***21Plug2
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279-9255 Flywheel Gp
06***79Dowel1
10***51Bolt; (M8x1.25x65-mm)5
10***30Bolt; (M10x1.5x20-mm)1
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279-8846 Housing Gp-Flywheel
27***46Housing Group-Flywheel1
29***23Plate1
29***24Spacer1
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277-3014 Housing Gp-Front
27***14Housing Group-Front1
27***51Plate-Lifting1
27***52Plate-Lifting1
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279-9653 Lifting Gp-Engine
24***47Support-Engine2
27***53Lifting Group-Engine1
7X***54Bolt; (M16x2x70-mm)4
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256-3464 Lifting Gp-Engine
25***64Lifting Group-Engine1
27***90Bracket-Mounting2
28***01Bolt2
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277-4541 Mounting Gp-Engine
18***55Clip1
23***11Clip-Pipe1
27***84Gasket1
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249-3722 Mounting Gp-Engine & Xmsn
10***90Plug1
18***55Clip1
23***11Clip-Pipe1
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305-7300 Pan Gp-Oil
12***36Ring-Retaining2
22***39Bolt-Special; (Connecting Rod)2
27***75Piston As6
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279-8780 Piston & Rod Gp
27***00Plug-Shaft End1
27***01Circlip1
27***06Spring-Shaft5
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274-1929 Pulley Gp-Crankshaft
11***04Seal-O-Ring1
12***15Bolt; (M8x16x1.25-mm)1
13***88Cap-Oil Filler; (Engine)1
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280-1911 Rocker Arm Gp
26***25Filter-Engine Oil1
28***11Rocker Arm Group1
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279-8825 Valve Mechanism Gp
14***27Connector Group1
17***15Strap; (Dual Clamp)1
27***25Valve Mechanism Group1
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Cooling System
277-2504 Cooler Gp-Engine Oil
09***47Nut-Thin; (M16x2 Thd)2
09***49Bolt; (M8x1.25x40-mm)2
16***15Nut; (M22x1.5-Thd)1
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274-7674 Cooling Ar
09***47Nut-Thin; (M16x2 Thd)2
09***49Bolt; (M8x1.25x40-mm)2
16***15Nut; (M22x1.5-Thd)1
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269-5950 Cooling Ar-Supplemental
19***80Washer-Hard; (17.5x32x8-mm Thk)6
26***50Cooling Ar-Supplemental1
8T***38Bolt-Pipe As To Main Pump Suction Port6
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269-8121 Fan & Motor Gp -Cooling Fan
03***48Clip; (11.11mm .437in Id)1
09***24Spacer; (11x19x58-mm Thk)1
13***53Hose; (192.5cm) (X2)0
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288-0925 Fastener Gp-Radiator
11***29Bolt; (M8x1.25x75-mm)7
22***38Seal-O-Ring1
22***19Gasket1
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251-4129 Lines Gp-Water
12***99Bolt; (M10x1.5x40-mm)2
25***29Lines Group-Water1
27***74Regulator As-Water Temperature; (Connector Included)1
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279-9720 Plug Gp-Water Lines
24***32Bolt-Tee; (M10x1x80.8-mm)1
25***01Filter Element As-Air; (Primary)1
25***02Filter Element As-Air; (Secondary)1
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277-2939 Pump Gp-Water
24***52Air Cleaner Group1
27***39Pump Group-Water1
27***18Bracket1
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277-2976 Regulator Gp-Temperature
24***32Bolt-Tee; (M10x1x80.8-mm)1
25***01Filter Element As-Air; (Primary)1
25***02Filter Element As-Air; (Secondary)1
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Electrical And Starting System
3e-6328 Alarm Gp -Action
32***96Software Group-Machine1
32***97Service Group-Machine1
3E***28Alarm Group; -Caterpillar Monitoring System-Action1
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226-7683 Alternator Gp-Charging
22***83Alternator Group-Charging1
32***49Software Group-Machine1
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9w-0742 Block Gp-Junction -Battery
26***55Element As-Jacket Water Heater; (120-Volt, 1000-Watt)1
26***66Cord As-Heater1
30***66Cover-Protection1
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239-9954 Control Gp-Unprogrammed -Product Link 300
23***54Control Group-Unprogrammed; (Product Link 300)(Product Link 321sr)1
26***56Element As-Jacket Water Heater; (240-Volt, 1000-Watt)1
26***69Cord As-Heater1
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290-4574 Electronics Ar-Machine
12***74Cover-Connector; (Wire Router)1
16***90Plug As-Connector; (70-Pin)1
23***09Plug As-Connector; (12-Pin)1
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262-2043 Electronics Gp-Communication -Product Link 300
12***74Cover-Connector; (Wire Router)1
16***90Plug As-Connector; (70-Pin)1
23***09Plug As-Connector; (12-Pin)1
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290-4576 Electronics Gp-Machine -Implement
16***56Bracket; (Lamp Retaining)1
17***91Bracket Assem.1
17***92Body Assem.1
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290-4575 Electronics Gp-Machine
16***56Bracket; (Lamp Retaining)1
17***91Bracket Assem.1
17***92Body Assem.1
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299-6957 Glow Plug Gp
21***88Lamp Group-Flood; -Cab Roof, Front2
25***55Lamp Group-Flood; (24-Volt, 65-Watt)(Cab Front)4
29***57Glow Plug Group1
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256-3469 Heater Gp-Jacket Water
10***04Kit-Receptacle; (4-Pin)(Start Switch)1
15***70Kit-Connecting Plug; (2-Pin)(Engine Sensor Wiring Harness)1
17***34Probe As-Liquid Level; (Water Separator)1
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256-3468 Heater Gp-Jacket Water
10***02Kit-Receptacle; (2-Pin)(Engine Sensor Wiring Harness)1
11***00Terminal-Bus8
11***90Fuse; (10 Amp)14
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267-9084 Installation Gp-Communication -Product Link 321sr
10***05Kit-Receptacle; (6-Pin)(Display Monitor Harness)1
18***35Pin-Connector; (16-Ga To 18-Ga)4
26***84Installation Group-Communication; -Product Link 321sr1
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250-6991 Installation Gp-Communication -Product Link 321sr
10***03Kit; (Receptacle) (3-Pin) (Includes Receptacle As & Wedge)1
12***67Pin-Connector; (14-Ga To 16-Ga)(14-Ga Wire)3
25***91Installation Group-Communication; -Product Link 321sr1
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254-8155 Lamp Gp-Flood
25***55Lamp Group-Flood; (24-Volt, 65-Watt)(Cab Front)1
6J***45Seal (.674" Inside Diameter)1
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219-6488 Lamp Gp-Flood
17***49Strap; (Marker)1
21***88Lamp Group-Flood; -Cab Roof, Front1
23***12Receptacle As-Connector; (2-Pin)1
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247-6510 Lighting Gp-Flood -Cab Front, Rear
10***03Kit; (Receptacle) (3-Pin) (Includes Receptacle As & Wedge)1
18***35Pin-Connector; (16-Ga To 18-Ga)3
24***10Lighting Group-Flood; -Cab Front, Rear1
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277-6080 Alternator Gp-Charging
27***80Mounting Group-Alternator1
29***53Glow Plug6
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242-3053 Panel Gp-Fuse
12***43Atomizer As1
23***45Nut-Sleeve; (5/16-24-Thd)1
24***53Panel Group-Fuse1
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178-2345 Sensor Gp-Liquid Level
17***45Sensor Group-Liquid Level; -Water Separator-Water In Fuel1
18***43Stud3
29***28Gasket1
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266-1467 Sensor Gp-Position
10***02Kit-Receptacle; (2-Pin)(Engine Sensor Wiring Harness)1
18***43Stud3
26***67Sensor Group-Position; -Brake Pedal1
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284-8207 Sensor Gp-Position
10***02Kit-Receptacle; (2-Pin)(Engine Sensor Wiring Harness)1
12***67Pin-Connector; (14-Ga To 16-Ga)(14-Ga Wire)2
27***33Starting Motor Group-Electric1
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262-4806 Sensor Gp-Speed
26***06Sensor Group-Speed1
2H***22Lockwasher2
6F***45Nut-Full; (3/8-24-Thd)2
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319-6491 Sensor Gp-Speed
15***70Kit-Connecting Plug; (2-Pin)(Engine Sensor Wiring Harness)1
18***36Socket-Connector; (16-Ga To 18-Ga)2
31***91Sensor Group-Speed1
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102-2240 Sensor Gp-Temperature
10***40Sensor Group-Temperature; -Output Transfer Gear Oil1
10***02Kit-Receptacle; (2-Pin)(Engine Sensor Wiring Harness)1
18***35Pin-Connector; (16-Ga To 18-Ga)2
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252-1590 Starting Aid Gp-Ether
10***05Kit-Receptacle; (6-Pin)(Display Monitor Harness)1
10***10Seal1
25***90Starting Aid Group-Ether1
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277-8748 Starting Aid Gp-Ether
10***03Kit; (Receptacle) (3-Pin) (Includes Receptacle As & Wedge)1
18***35Pin-Connector; (16-Ga To 18-Ga)3
27***48Starting Aid Group-Ether1
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301-8296 Starting Motor Gp-Electric
11***62Tube-Heat Shrink; (10.85-mm Dia)(299-cm)0
30***96Starting Motor Group-Electric, Pipe1
30***77Harness As-Window Wiper1
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301-2744 Starting Motor Gp-Electric
10***02Kit-Receptacle; (2-Pin)(Engine Sensor Wiring Harness)1
18***35Pin-Connector; (16-Ga To 18-Ga)2
30***44Starting Motor Group-Electric1
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301-2768 Starting Motor Gp-Electric
09***34Terminal-Blade; (18-Ga To 22-Ga)2
10***41Terminal-Receptacle; (18-Ga To 20-Ga)2
10***01Kit; (Receptacle) (12-Pin) (Includes Receptacle As & Wedge)1
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307-4441 Starting Motor Gp-Electric
03***97Boot1
10***02Kit-Receptacle; (2-Pin)(Engine Sensor Wiring Harness)2
10***04Kit-Receptacle; (4-Pin)(Start Switch)1
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7n-0718 Switch Gp-Disconnect -Battery
10***02Kit-Receptacle; (2-Pin)(Engine Sensor Wiring Harness)2
10***03Kit; (Receptacle) (3-Pin) (Includes Receptacle As & Wedge)1
10***04Kit-Receptacle; (4-Pin)(Start Switch)1
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241-8368 Switch Gp-Magnetic -Main Relay
03***57Washer; (13x26x6-mm Thk)1
10***29Stud; (M10x1.5-Thd)1
10***02Kit-Receptacle; (2-Pin)(Engine Sensor Wiring Harness)5
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258-0883 Switch Gp-Pressure
21***39Strap-Cable2
25***83Switch Group-Pressure; -Fuel Filter, Differential-Fuel Filter1
27***10Bolt1
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106-0107 Switch Gp-Rotary -Throttle Position
10***41Terminal-Receptacle; (18-Ga To 20-Ga)6
10***02Kit-Receptacle; (2-Pin)(Engine Sensor Wiring Harness)1
10***03Kit; (Receptacle) (3-Pin) (Includes Receptacle As & Wedge)2
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165-5970 Switch Gp-Toggle -Fuel Priming Pump
16***70Switch Group-Toggle; -Engine Shutoff-Starting Aid-Diagnostic Mode Select1
29***35Control Group-Joystick; -Steering, Transmission1
32***71Harness As-Sensor1
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239-1134 Valve Gp-Ether Starting
11***44Seal-O-Ring2
15***59Cover1
15***60Cover1
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251-2003 Wiring Gp-Cab
00***00Ring-Snap3
03***16Bearing As-Needle3
09***67Plug, Tapered1
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310-5216 Wiring Gp-Cab -Radio, Wipers
09***68Plug, Tapered1
10***39Housing-Final Drive1
10***40Spacer1
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206-7297 Wiring Gp-Chassis
10***28Filter-Oil; (Ultra High Efficiency)1
10***02Kit-Receptacle; (2-Pin)(Engine Sensor Wiring Harness)1
15***14Filter-Oil; (Fire Resistant Fluid)1
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299-5222 Wiring Gp-Chassis -Implement
10***28Filter-Oil; (Ultra High Efficiency)1
10***02Kit-Receptacle; (2-Pin)(Engine Sensor Wiring Harness)1
15***14Filter-Oil; (Fire Resistant Fluid)1
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305-8977 Wiring Gp-Engine
06***40Seal-O-Ring (Id=37.69mm)1
12***94Plug; (Break Off)1
12***98Plug2
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206-7301 Wiring Gp-Engine
06***40Seal-O-Ring (Id=37.69mm)1
12***94Plug; (Break Off)1
12***98Plug2
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206-7302 Wiring Gp-Platform
12***94Plug; (Break Off)1
12***56Cap1
12***77Bushing-Coupling1
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272-2771 Wiring Gp-Seat
10***83Bolt; (Hex Socket) (M10x1.75x70mm)2
12***47Spacer; (10.5x20x12-mm Thk)1
13***31Bracket Assem.1
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Engine Arrangement
242-1356 Engine Ar
24***56Engine Ar1
27***29Pulley Group-Crankshaft1
27***04Cooler Group-Engine Oil1
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206-7294 Installation Ar-Engine
20***48Lines Group-Fuel1
20***94Installation Ar-Engine1
24***57Pipe Group-Exhaust; -Long1
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Frame And Body
294-5765 Case & Frame Gp
09***84Locknut; (M12x1.75-Thd)4
28***38Grill Group-Radiator; -Bottom1
28***56Grill Group-Radiator; -Top1
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290-1590 Counterweight Gp-Hydraulic
09***84Locknut; (M12x1.75-Thd)4
28***56Grill Group-Radiator; -Top1
29***90Counterweight Group-Hydraulic1
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289-6140 Cover Gp-Access -Rh
22***18Bumper3
28***39Grill As-Radiator1
28***22Latch1
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289-6145 Cover Gp-Access -Lh
22***18Bumper3
28***41Grill As-Radiator; (Bottom)(Heavy-Duty)1
28***22Latch1
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288-9567 Cover Gp-Access
09***84Locknut; (M12x1.75-Thd)4
28***40Grill Group-Radiator; -Bottom1
28***58Grill Group-Radiator; -Top1
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288-9568 Cover Gp-Access -Heavy-Duty
09***84Locknut; (M12x1.75-Thd)4
28***58Grill Group-Radiator; -Top1
28***68Cover Group-Access; -Heavy-Duty1
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298-8823 Door Gp-Access -Lh
09***47Nut-Thin; (M16x2 Thd)2
16***15Nut; (M22x1.5-Thd)1
26***19Cover As-Access1
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246-8384 Drawbar Gp
24***84Drawbar Group1
26***19Cover As-Access1
27***66Bracket As1
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312-4370 Enclosure Gp-Platform
22***18Bumper3
31***70Enclosure Group-Platform1
32***62Latch1
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290-1525 Frame & Mtg Gp-Pipelayer -Lgp
24***02Plate As2
24***07Plate As2
24***11Plate As1
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290-4600 Frame & Mtg Gp-Pipelayer
19***77Washer-Hard; (11x25x10-mm Thk)6
19***78Washer-Hard; (13.5x30x12-mm Thk)2
27***21Plug2
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290-1524 Frame & Mtg Gp-Pipelayer
22***18Bumper3
29***24Frame & Mtg Group-Pipelayer1
32***62Latch1
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340-1768 Grill Gp-Radiator -Bottom
26***53Support As-Hood1
27***48Seal1
34***68Grill Group-Radiator; -Bottom1
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269-8091 Grill Gp-Radiator -Heavy-Duty
14***26Plug6
15***21Cap As1
22***94Lock As1
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269-8084 Grill Gp-Radiator
19***77Washer-Hard; (11x25x10-mm Thk)6
19***78Washer-Hard; (13.5x30x12-mm Thk)2
26***84Grill Group-Radiator1
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286-3456 Grill Gp-Radiator -Top
20***93Seal; (8.0-Dm Each)0
22***18Bumper3
26***45Cover As; (Lh)1
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286-3458 Grill Gp-Radiator -Top
26***41Door As; (Rh)1
28***58Grill Group-Radiator; -Top1
28***19Cover1
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286-3440 Grill Gp-Radiator -Bottom
19***77Washer-Hard; (11x25x10-mm Thk)12
26***47Support Group-Hood; -Sound Suppression-Nacd1
26***24Bracket As2
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286-3438 Grill Gp-Radiator -Bottom
19***78Washer-Hard; (13.5x30x12-mm Thk)6
20***65Spacer; (15-mm Thk)20
21***74Guard As; (Front)4
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340-1802 Grill Gp-Radiator
29***30Hood & Guard Group1
34***02Grill Group-Radiator1
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249-3604 Guard Gp-Bottom
10***82Cover2
12***28Washer-Hard; (26x40x8-mm Thk)4
1K***85Ring Part Of Kit P/N 1w***464
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249-3608 Guard Gp-Bottom -Heavy-Duty
21***93Cap; (Track Roller)2
24***08Guard Group-Bottom; -Heavy-Duty1
5P***47Washer (Bracket To Valve Support)4
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249-3191 Guard Gp-Fuel Tank -Heavy-Duty
21***92Cap Group-Track Roller; -Systemone7
22***87Bearing-Sleeve1
22***98Bearing-Sleeve1
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249-3190 Guard Gp-Fuel Tank
24***90Guard Group-Fuel Tank1
27***05Door As-Access2
29***95Bracket As1
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290-4580 Guard Gp-Lines
21***92Cap Group-Track Roller; -Systemone7
22***87Bearing-Sleeve1
22***98Bearing-Sleeve1
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267-8340 Guard Gp-Radiator
25***79Guard Group-Track Guide; -Systemone2
26***40Guard Group-Radiator1
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302-4534 Guard Gp-Rear
20***65Spacer; (15-mm Thk)4
25***80Guide As1
30***34Guard Group-Rear1
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239-8217 Guard Gp-Sprocket
23***17Guard Group-Sprocket1
24***24Yoke As1
24***58Plate-Wear2
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298-8830 Hood & Guard Gp
14***33Seal Group-Duo Cone; (Duo Cone) (151page)2
16***31Ring; (Toric)2
24***22Idler As1
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298-8826 Panel Gp-Side -Rh
23***29Link-Track2
29***05Cartridge As-Track Link2
29***26Panel Group-Side; -Rh1
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298-8819 Panel Gp-Side -Lh
23***29Link-Track38
29***19Panel Group-Side; -Lh1
31***43Link As-Track Box; -Link Box20
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267-9247 Support Gp-Hood
1H***28Seal (3.73 In. Inside Diameter)2
24***38Shaft As2
26***91Seal-Football2
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294-5780 Suppression Ar-Sound
Fuel System
288-5425 Adapter Gp-Fast Fill Fuel
25***83Switch Group-Pressure; -Fuel Filter, Differential-Fuel Filter1
27***38Protection Group-Fuel System; (Line, Low Pressure)2
28***25Adapter Group-Fast Fill Fuel1
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288-2738 Cap Gp-Fuel Filler -Extreme Service, Lockable
27***39Seal1
28***37Washer1
28***38Cap Group-Fuel Filler; -Extreme Service, Lockable, Engine Brake Slave Piston1
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164-4858 Cap Gp-Fuel Filler -Extreme Service, Lockable
16***58Cap Group-Fuel Filler; -Extreme Service, Lockable1
22***78Seal-Ring; (Fuel And Water Sep Filter)1
32***44Filter As-Water Sep & Fuel; (Primary)1
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305-7294 Filter Gp-Fuel
03***79Nipple; (Hose)1
15***25Valve-Shutoff; (Coolant)1
17***15Strap; (Dual Clamp)1
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174-9570 Filter Gp-Water Sep & Fuel
10***51Bolt; (M8x1.25x65-mm)1
11***59Bolt; (M10x1.5x35-mm)2
12***15Bolt; (M8x16x1.25-mm)3
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321-3600 Injector Gp-Fuel
10***51Bolt; (M8x1.25x65-mm)1
11***59Bolt; (M10x1.5x35-mm)2
12***15Bolt; (M8x16x1.25-mm)3
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305-7299 Lines Gp-Fuel
10***95Bolt; (M8x1.25x35-mm)1
12***15Bolt; (M8x16x1.25-mm)1
16***62Washer2
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206-7248 Lines Gp-Fuel
11***85Seal-O-Ring; (13.94mm Id)1
20***48Lines Group-Fuel1
22***72Fitting-Fuel1
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351-0973 Pump Gp-Fuel
10***95Bolt; (M8x1.25x35-mm)1
12***15Bolt; (M8x16x1.25-mm)1
16***62Washer2
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291-5919 Pump Gp-Fuel Injection
11***85Seal-O-Ring; (13.94mm Id)1
22***72Fitting-Fuel1
22***00Seal-O-Ring2
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310-0659 Pump Gp-Fuel Injection
10***40Sensor Group-Temperature; -Output Transfer Gear Oil1
15***45Elbow1
16***16Adapter As1
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317-8021 Pump Gp-Fuel Injection
09***43Packing1
10***02Kit-Receptacle; (2-Pin)(Engine Sensor Wiring Harness)1
18***35Pin-Connector; (16-Ga To 18-Ga)2
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301-2710 Pump Gp-Fuel Prm & Water Sep -Electric
10***02Kit-Receptacle; (2-Pin)(Engine Sensor Wiring Harness)1
18***35Pin-Connector; (16-Ga To 18-Ga)2
30***10Pump Group-Fuel Prm & Water Sep; -Electric1
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212-3657 Pump Gp-Fuel Prm & Water Sep -Electric
09***43Packing1
10***02Kit-Receptacle; (2-Pin)(Engine Sensor Wiring Harness)1
18***35Pin-Connector; (16-Ga To 18-Ga)2
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206-7249 Tank Gp-Fuel
18***38Collar2
18***39Fan As; (Alternator)1
18***44Coil Assem.1
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288-5423 Tank Gp-Fuel
1D***17Nut,Plain,Hexagon Starter Motor Assembly3
28***23Heat Shield, Tank Group-Fuel1
6V***22Tube-Heat Shrink; (25.4-mm Dia)(10-M)0
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288-5424 Tank Gp-Fuel -Fast Fill
12***74Screw-Pan Head; (8-32x9.52-mm)1
13***26Washer; (4.52x8.28x0.76-mm Thk)1
28***24Tank Group-Fuel; -Fast Fill1
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249-7117 Tank Gp-Fuel -Fast Fill
16***68Bolt; (M10x1.5x95-mm)4
22***83Alternator Group-Charging1
24***17Tank Group-Fuel; -Fast Fill1
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Hydraulic System
314-3398 Accumulator Gp-Hydraulic -Uncharged
09***35Spacer; (11x25x20-mm Thk)1
09***86Clamp; (Hose)2
16***62Connector Assembly1
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297-6401 Accumulator Gp-Hydraulic -Charged
29***01Accumulator Group-Hydraulic; -Charged1
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226-0420 Accumulator Gp-Pilot Oil -Charged
11***59Mounting As2
22***20Accumulator Group-Pilot Oil; -Charged1
24***79Tank Group-Hydraulic1
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230-3489 Accumulator Gp-Pilot Oil -Uncharged
1U***27Guide-Valve1
23***89Accumulator Group-Pilot Oil; -Uncharged1
24***81Tank As-Hydraulic1
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294-5761 Cylinder & Mtg Gp-Hydraulic -Tilt
14***15Connector As1
14***26Adapter; (Straight) (-4 Orb X -4 Orfs)1
14***27Connector Group1
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296-6784 Cylinder Gp-Tilt -Counterweight
12***47Elbow1
14***15Connector As1
14***26Adapter; (Straight) (-4 Orb X -4 Orfs)1
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290-4581 Hydraulic Ar
09***42Bolt-Socket Head; (M5x0.8thdx50mm)8
13***90Bolt-Socket Head; (M8x1.25x120-mm)4
18***14Screw1
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294-5769 Lines Gp-Boom Control -Boom Lowering
12***51Kit-Seal; (Pressure Relief Valve)1
17***68Valve Group-Check; (Reversing Fan)1
24***95Valve Group-Solenoid; (24-Volt)(Diff Lock Proportioning)2
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290-4582 Lines Gp-Counterweight
24***81Flange1
25***37Valve Group-Solenoid1
29***82Lines Group-Counterweight1
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290-4585 Lines Gp-Pilot
03***28Seal-O-Ring1
12***32Ring-Backup1
23***13Coil As1
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290-4587 Lines Gp-Pump -Implement, Hydraulic Fan
24***81Flange1
24***12Kit-Seal; (Solenoid Valve)1
29***87Lines Group-Pump; -Implement, Hydraulic Fan1
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252-7008 Manifold Gp-Control -Demand Fan
10***90Bracket1
14***00Rod As1
14***01Guide1
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285-7460 Manifold Gp-Control -Hydraulic Fan, Auto Reversing
24***94Plug13
24***58Cover As; (Rear, Lh)1
24***60Cover As; (Rear, Rh)1
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296-7683 Pump Gp-Piston -Implement
13***38Washer-Plastic; (13x31.7x0.8-mm Thk)4
24***44Washer; (12.7x31.7x1-mm Thk)2
26***79Latch1
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265-3751 Tank & Mtg Gp-Hydraulic
251-3544 Tank & Mtg Gp-Hydraulic
17***58Mount1
18***07Screw-Drive; (No 8x1.25-In)3
21***84Compressor As1
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246-7379 Tank Gp-Hydraulic
10***97Valve As; (Low Side)1
10***99Valve As; (Air Conditioner Refrigerant)1
10***33Clip; (Slot)1
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250-7881 Valve Gp-Control -Demand Fan
09***66Washer; (Hard) (4.5x9x1mm Thk)2
11***15Grommet1
13***93Bushing1
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250-7882 Valve Gp-Control -Reversing Fan
25***82Valve Group-Control; -Reversing Fan1
29***81Arm As; (Inner, Rh)1
29***84Arm As; (Inner, Lh)1
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296-7697 Valve Gp-Control -Winch
29***90Bearing1
29***05Arm As; (Outer, Rh)1
29***08Spacer1
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296-7704 Valve Gp-Load Control -Dead Engine Lower
29***90Bearing1
29***08Spacer1
29***12Arm; (Outer, Lh)1
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318-5272 Valve Gp-Shutoff -Implement Lockout
12***70Capscrew; (Button Hd) (M8x1.25x20) (G10.9)9
25***98Knob2
26***78Bracket1
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252-2237 Valve Gp-Solenoid
24***56Compressor Group-Refrigerant1
24***70Lines Group-Air Conditioner1
24***71Lines Group-Heater1
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211-2092 Valve Gp-Solenoid
12***70Capscrew; (Button Hd) (M8x1.25x20) (G10.9)9
21***92Valve Group-Solenoid; -Hydraulic Fan1
25***98Knob2
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302-8149 Valve Gp-Solenoid -With Hardware
20***02Wiring Group-Platform1
24***06Control & Mtg Group-Pedal; -Governor, Brake1
24***07Air Conditioner Group1
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Implements
142-8109 Stop Gp-Boom
14***09Stop Group-Boom1
15***00Bolt; (M10x1.5x54.25-mm)1
16***58Cover; (Dust)1
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Lubrication System
280-1428 Filler Gp-Engine Oil
28***28Filler Group-Engine Oil1
31***45Pump-Oil; (Engine)1
6I***90Bolt; (M8x1.25x40-mm)4
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277-2912 Filter Gp-Engine Oil
19***67Seal-O-Ring1
21***33Valve As-Fluid Sampling1
23***61Plug; (Blanking)1
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274-5983 Oil Change Gp-High Speed -Engine
10***51Bolt; (M8x1.25x65-mm)5
10***17Washer4
10***47Washer4
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277-4262 Pump Gp-Engine Oil
19***77Washer-Hard; (11x25x10-mm Thk)6
26***40Guard Group-Radiator1
26***50Cooling Ar-Supplemental1
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277-4694 Valve Gp-Fluid Sampling -Engine Oil
11***77Bolt; (M16x2x65-mm)2
18***43Cap As-Radiator; (Coolant Tank)1
18***31Mount-Rubber8
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Machine Arrangement
290-4572 Chassis Ar
24***41Padlock Group; (1 On Fuel Tank Cap) (1 On Hydraulic Tank Cap) (1 On Grill Latch)1
24***84Drawbar Group1
24***02Platform Group-Operator1
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290-4570 Common Ar
290-1580 Pipelayer Ar
10***67Block Group1
14***09Stop Group-Boom1
23***70Boom Group1
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Operator Station
298-4390 Accessory Gp-Cab
15***00Bolt; (M10x1.5x54.25-mm)1
16***58Cover; (Dust)1
17***98Pulley As-Idler; (8-Groove)1
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294-7779 Adjuster Gp-Seat
20***02Wiring Group-Platform1
24***06Control & Mtg Group-Pedal; -Governor, Brake1
24***10Lighting Group-Flood; -Cab Front, Rear1
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214-0783 Air Compressor Gp-Seat -Heavy-Duty
10***02Kit-Receptacle; (2-Pin)(Engine Sensor Wiring Harness)1
12***67Pin-Connector; (14-Ga To 16-Ga)(14-Ga Wire)2
21***83Air Compressor Group-Seat; -Heavy-Duty1
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237-3970 Air Compressor Gp-Seat
18***06Compressor Group-Refrigerant; -Air Conditioner1
23***70Air Compressor Group-Seat1
25***81Bolt-Flange Head; (M8x1.25x100-mm)2
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268-0179 Air Conditioner Gp
13***54Screw-Truss Head; (M4x0.7x10-mm)11
18***46Latch As1
25***87Hinge As1
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247-6507 Air Conditioner Gp
10***05Kit-Receptacle; (6-Pin)(Display Monitor Harness)1
12***72Seal; (135-cm)0
15***70Kit-Connecting Plug; (2-Pin)(Engine Sensor Wiring Harness)2
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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
18***35Pin-Connector; (16-Ga To 18-Ga)11
26***28Receptacle As-Connector; (12-Pin)1
28***54Armrest Group; -Rh1
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298-4399 Cab Ar-Enclosed Rops
18***35Pin-Connector; (16-Ga To 18-Ga)9
26***28Receptacle As-Connector; (12-Pin)1
29***99Cab Ar-Enclosed Rops1
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298-4400 Cab Gp
10***05Kit-Receptacle; (6-Pin)(Display Monitor Harness)1
18***35Pin-Connector; (16-Ga To 18-Ga)15
26***28Receptacle As-Connector; (12-Pin)1
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298-4397 Canopy Ar
14***31Cap-Push Button; (Yellow)(Transmission Hold)1
18***35Pin-Connector; (16-Ga To 18-Ga)17
22***55Cap-Push Button; (Black)2
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298-4398 Canopy Ar -Heated
11***27Screw-Machine; (M6x1x30-mm)1
11***46Locknut; (M6x1-Thd)4
12***36Screw; (Truss Head) (M6x1.0x16mm)6
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298-4059 Canopy Gp
10***91Screw; (Flat Head) (No.6-20x0.5in)10
10***32Lamp Group-Dome1
11***85Bumper1
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243-2156 Compressor Gp-Refrigerant
23***12Receptacle As-Connector; (2-Pin)2
24***56Compressor Group-Refrigerant1
27***10Retainer; (Push On)2
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183-5106 Compressor Gp-Refrigerant
11***11Socket-Auxiliary Power; (12-Volt)(Power Port)1
16***76Film; (Identification) (12v) (On Rear Console Behind Operators Seat)1
18***06Compressor Group-Refrigerant; -Air Conditioner1
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287-0554 Condenser Gp-Refrigerant
11***27Screw-Machine; (M6x1x30-mm)1
12***75Blade As-Wiper; (450-mm)(Door, Rh)1
12***78Locknut; (M6x1-Thd)2
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314-3004 Console Gp -Lh
12***61Grill-Air Filter; (Cab)1
13***53Hose; (192.5cm) (X2)0
1K***49Spacer Alternator To Brackets1
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314-3003 Console Gp-Control -Lh
09***83Screw-Machine; (M5x0.8-Thd)1
10***71Clevis1
10***08Bumper; (Conical)1
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268-9352 Console Gp-Operator -Lh
13***53Hose; (192.5cm) (X2)0
26***52Console Group-Operator; -Lh1
27***01Bracket1
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268-9351 Console Gp-Operator -Rh
09***66Washer; (Hard) (4.5x9x1mm Thk)4
11***15Grommet1
13***93Bushing1
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247-6506 Control & Mtg Gp-Pedal -Governor, Brake
24***06Control & Mtg Group-Pedal; -Governor, Brake1
27***68Valve Group-Cab Heater1
28***57Coil As-Heater1
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266-7634 Control Gp-Handle
10***55Cover-Speaker2
12***08Screw-Hex Socket; (M4x0.7x30-mm)8
14***22Nut; (M5x0.8-Thd)1
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266-7632 Control Gp-Handle
26***32Control Group-Handle; -Grade Control, Rh1
27***68Valve Group-Cab Heater1
28***22Crankshaft Seal Installer, Coil As-Heater1
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328-0894 Control Gp-Joystick -Hook, Boom, Counterweight
10***04Kit-Receptacle; (4-Pin)(Start Switch)1
10***07Switch Group-Rotary; -Autodig Material Select-Throttle Position1
11***09Knob-Control1
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290-4835 Control Gp-Joystick -Steering, Transmission
10***04Kit-Receptacle; (4-Pin)(Start Switch)1
10***07Switch Group-Rotary; -Autodig Material Select-Throttle Position1
11***09Knob-Control1
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298-4380 Cover Gp-Cab -Enclosed Rops
10***02Kit-Receptacle; (2-Pin)(Engine Sensor Wiring Harness)1
10***93Valve As1
10***94Gasket1
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298-4063 Cover Gp-Cab -Open Rops
27***35Foam1
27***36Foam1
27***37Foam1
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251-4060 Cover Gp-Console -Canopy
18***35Pin-Connector; (16-Ga To 18-Ga)4
23***09Receptacle As-Connector; (4-Pin)1
25***60Cover Group-Console; -Canopy1
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250-2111 Cover Gp-Console
11***36Valve As-Shutoff; (Jacket Water Heater)2
13***53Hose; (192.5cm) (X2)0
17***15Strap; (Dual Clamp)2
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298-4320 Door Gp-Cab -Lh
18***35Pin-Connector; (16-Ga To 18-Ga)4
23***09Receptacle As-Connector; (4-Pin)1
26***23Cap-Wiper1
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298-4240 Door Gp-Cab -Rh
18***35Pin-Connector; (16-Ga To 18-Ga)4
23***09Receptacle As-Connector; (4-Pin)1
26***23Cap-Wiper1
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251-7146 Heater Gp-Cab
18***35Pin-Connector; (16-Ga To 18-Ga)4
23***09Receptacle As-Connector; (4-Pin)1
25***46Heater Group-Cab1
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289-2123 Heater Gp-Cab
16***83Knob-Lumbar1
21***29Plug3
27***35Cushion As-Backrest; (Vinyl)1
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250-9160 Heater Gp-Cab -Open Rops
18***35Pin-Connector; (16-Ga To 18-Ga)4
23***09Receptacle As-Connector; (4-Pin)1
25***60Heater Group-Cab; -Open Rops1
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276-8082 Heater Gp-Cab
11***31Mount Assem.8
12***95Washer; (32x134x12-mm Thk)4
14***79Sleeve4
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277-9969 Heater Gp-Cab
16***83Knob-Lumbar1
21***29Plug3
27***69Heater Group-Cab1
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298-4370 Installation Gp-Radio
13***43Plate As-Lumbar1
17***52Retainer1
17***07Holder1
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320-1206 Instrument Gp
16***83Knob-Lumbar1
21***29Plug3
29***02Pan Group-Backrest; -Lumbar1
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320-1207 Instrument Gp -Open Rops
12***70Capscrew; (Button Hd) (M8x1.25x20) (G10.9)6
21***14Switch As-Limit; (Seat Adjustment)1
26***59Spring1
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269-3790 Insulation Gp-Weather
12***70Capscrew; (Button Hd) (M8x1.25x20) (G10.9)6
21***14Switch As-Limit; (Seat Adjustment)1
26***59Spring1
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248-7070 Lines Gp-Air Conditioner
12***70Capscrew; (Button Hd) (M8x1.25x20) (G10.9)6
21***14Switch As-Limit; (Seat Adjustment)1
24***70Lines Group-Air Conditioner1
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248-7071 Lines Gp-Heater
09***66Washer; (Hard) (4.5x9x1mm Thk)4
10***04Kit-Receptacle; (4-Pin)(Start Switch)1
11***80Spring1
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262-4070 Motor Gp-Window Wiper -Door, Rh
25***59Slider As1
26***67Bracket As; (Lh)1
26***69Bracket As; (Rh)1
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330-5021 Motor Gp-Window Wiper -Front
03***14Bolt-Self Locking; (1/4unc X 1/2)1
10***67Washer-Hard; (7.2x25x2-mm Thk)1
14***88Locknut-Flange; (3/8-16-Thd)6
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270-0076 Motor Gp-Window Wiper -Rear
0T***89Cap Screw (2" Long)2
27***76Motor Group-Window Wiper; -Rear1
27***03Spacer; (11.7x19.8x25.4-mm Thk)1
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262-4069 Motor Gp-Window Wiper -Door, Lh
26***69Motor Group-Window Wiper; -Door, Lh1
33***66Software Group-Communication; (Product Link 121sr)1
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247-6606 Motor Gp-Window Wiper -Front
24***06Motor Group-Window Wiper; -Front1
24***03Platform As; (Rops)1
7X***18Washer-Hard; (13.5x40x5-mm Thk)2
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298-4318 Mounting Gp-Cab
03***14Bolt-Self Locking; (1/4unc X 1/2)1
10***67Washer-Hard; (7.2x25x2-mm Thk)1
14***88Locknut-Flange; (3/8-16-Thd)6
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278-8515 Pan Gp-Backrest -Cloth
03***14Bolt-Self Locking; (1/4unc X 1/2)1
10***67Washer-Hard; (7.2x25x2-mm Thk)1
14***88Locknut-Flange; (3/8-16-Thd)6
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292-6402 Pan Gp-Backrest -Lumbar
25***97Seat Group-Suspension; -Vinyl, Air1
26***51Console Group-Operator; -Rh1
26***52Console Group-Operator; -Lh1
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301-3161 Pan Gp-Backrest -Vinyl, Heated
17***83Extension Group-Backrest; (Vinyl)1
17***87Setscrew; (1/4-20-Thd)4
17***35Block Kit; (Includes Bolt, Washers, Blocks And Setscrews)1
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278-8517 Pan Gp-Backrest -Vinyl
26***51Console Group-Operator; -Rh1
26***52Console Group-Operator; -Lh1
27***71Wiring Group-Seat1
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301-3162 Pan Gp-Seat -Vinyl, Heated
26***51Console Group-Operator; -Rh1
26***52Console Group-Operator; -Lh1
27***71Wiring Group-Seat1
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295-4477 Pan Gp-Seat -Vinyl
11***91Rod1
17***83Extension Group-Backrest; (Vinyl)1
17***87Setscrew; (1/4-20-Thd)4
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295-4475 Pan Gp-Seat -Cloth
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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253-2439 Pedal Gp-Governor & Brake
16***98Seal-Lip Type2
1W***17Dowel-Hollow2
24***95Rod1
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249-3602 Platform Gp-Operator
16***98Seal-Lip Type2
1W***17Dowel-Hollow2
24***95Rod1
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263-9088 Radio Gp-Communication -Product Link 121sr
03***49Nut-Self Lock; (No.10.Unc)2
10***03Fastener22
10***02Kit-Receptacle; (2-Pin)(Engine Sensor Wiring Harness)1
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262-0766 Recliner Gp-Seat
24***94Plug13
24***31Plate As1
24***32Plate As1
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272-2272 Seat Belt Gp -Retractable
10***29Stud; (M10x1.5-Thd)2
14***95Hose; (650-cm Each)0
15***36Spout As1
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301-3165 Seat Gp -Vinyl, Heated
24***45Seal; (81-cm)0
29***75Film-Exit1
29***77Handle1
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295-4436 Seat Gp -Vinyl
13***70Seal; (326-cm)0
14***87Cushion1
19***40Seal; (8-cm)0
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295-4434 Seat Gp -Cloth
13***70Seal; (326-cm)0
14***87Cushion1
19***40Seal; (8-cm)0
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250-2120 Seat Gp-Suspension -Cloth, Air
24***82Glass-Front1
25***20Seat Group-Suspension; -Cloth, Air1
25***03Window Group-Cab; -Rh1
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250-2121 Seat Gp-Suspension -Vinyl, Air
13***91Nozzle As-Washer1
14***95Hose; (650-cm Each)0
14***33Blade As-Wiper; (500-mm)(Rear)1
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301-3166 Seat Gp-Suspension -Vinyl, Heated-Air
10***44Link; (To Boom)1
10***45Block Group; -Upper1
10***46Sheave Assembly; (To Shaft)1
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272-8109 Seat Gp-Suspension -Cloth, Air
10***72Pulley As; (Block)1
10***79Bushing1
10***10Pin Assembly1
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253-8297 Seat Gp-Suspension -Vinyl, Air
10***66Cable-Load1
14***99Socket As1
25***97Seat Group-Suspension; -Vinyl, Air1
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320-1194 Seat Gp-Suspension -Vinyl, Heated-Air
10***72Pulley As; (Block)2
10***73Plate-Center1
10***74Pin1
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284-7055 Support Gp-Hydraulic Control -Rh
10***72Pulley As; (Block)1
10***79Bushing1
10***06Plate-Side2
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284-7059 Support Gp-Steering Control -Lh
13***24Bar2
13***39Boom As1
16***41Pin2
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291-7971 Suspension Gp-Seat -Air
10***29Bearing As-Needle3
10***71Hub-Planetary1
10***72Pin-Planetary3
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298-4074 Trim Gp-Canopy
00***17Bearing As-Needle1
03***81Bearing As-Needle6
10***39Ring-Retaining1
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251-5975 Washer Gp-Window
10***03Bolt; (Socket Head) (M10x1.5x80mm)2
10***11Tee-O-Ring Port1
14***21Connector As2
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298-4330 Window Gp-Cab
12***54Setscrew; (M12x1.75-Thd)1
12***13Seal; (Shaft)1
12***14Shim; (3-mm Thk)1
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259-4405 Window Gp-Cab -Lh
14***21Connector As1
14***27Connector Group2
14***39Connector As.1
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298-4076 Window Gp-Cab -Rear
14***16Connector Group1
14***21Connector As1
14***27Connector Group2
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259-4403 Window Gp-Cab -Rh
10***03Bolt; (Socket Head) (M10x1.5x80mm)2
10***11Tee-O-Ring Port1
14***16Connector Group1
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333-2732 Window Gp-Sliding -Rh
1D***27Bolt,Machine Head Mtg Uoc:Bsv,Bsx4
29***78Winch Group-Boom1
29***84Motor Group-Piston; -Boom1
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333-2733 Window Gp-Sliding -Lh
1J***75Bolt,Machine Head Mtg4
29***79Winch Group-Hook1
29***85Motor Group-Piston; -Hook1
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298-4360 Wiper Gp-Window
10***70Brake Group-Winch; -Boom1
10***90Drive Group-Final; -Winch, Boom-Winch1
29***60Wiper Group-Window1
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Power Train
278-4439 Actuator Gp-Pump -Hydrostatic Drive
10***36Clip1
14***27Connector Group2
14***42Connector Group2
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206-7255 Coupling Gp-Pump
14***43Tee As-Orfs1
16***69Adapter; (Str Thd (-6) Orfs/0)1
1P***03Seal - Rectangular (31.86mm Id)4
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114-3460 Final Drive Gp -Winch, Hook
11***60Drive Group; -Winch, Hook1
14***36Adapter; (Straight) (-6 Orb X -6 Orfs)2
14***40Adapter; (Straight) (-8 Orb X -8 Orfs)3
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106-5790 Final Drive Gp -Winch, Boom
10***90Drive Group-Final; -Winch, Boom-Winch1
14***56Elbow As1
15***38Elbow As1
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302-7298 Filter Gp-Oil -Power Train
24***39Motor Group-Piston; -Hydrostatic Drive, Lh1
24***40Motor Group-Piston; -Hydrostatic Drive, Rh1
2K***39Seal-O-Ring2
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304-9338 Filter Gp-Oil -Winch
12***13Seal; (Shaft)1
12***14Shim; (3-mm Thk)1
12***79Setscrew-Socket; (M12x1.75-Thd)1
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239-1245 Final Drive & Brake Gp
12***13Seal; (Shaft)1
12***14Shim; (3-mm Thk)1
12***79Setscrew-Socket; (M12x1.75-Thd)1
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279-0543 Head Gp-Motor -Hydrostatic Drive, Rh
20***43Lines Group-Power Train Cooler1
20***55Coupling Group-Pump1
20***57Lines Group-Hydrostatic1
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278-8935 Head Gp-Motor -Hydrostatic Drive, Lh
1P***43Plug-Breather1
24***73Housing1
24***74Bracket As1
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278-4441 Head Gp-Pump -Hydrostatic Drive, Rh
14***11Spacer1
27***41Head Group-Pump; -Hydrostatic Drive, Rh1
27***84Coupling2
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278-4440 Head Gp-Pump -Hydrostatic Drive, Lh
19***77Washer-Hard; (11x25x10-mm Thk)4
24***37Pump Group-Piston; -Hydrostatic Drive1
25***55Bracket As1
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290-4596 Lines Gp-Charge Pressure
11***96Key-Shaft1
12***77Bushing-Coupling1
24***04Plug2
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206-7263 Lines Gp-Drain
20***63Lines Group-Drain1
26***29Pump Group-Piston; -Hydrostatic Drive, Lh1
26***30Pump Group-Piston; -Hydrostatic Drive, Rh1
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206-7257 Lines Gp-Hydrostatic
11***28Screw2
11***29Screw1
12***74Screw-Lock1
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206-7243 Lines Gp-Power Train Cooler
11***28Screw2
11***29Screw1
12***74Screw-Lock1
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252-5074 Lines Gp-Pump
12***55Shim; (4.5-mm Thk)1
12***56Shim; (4.6-mm Thk)1
12***57Shim; (4.7-mm Thk)1
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236-2123 Motor & Mounting Gp -Hydrostatic Drive
09***44Ring-Retaining1
13***40Seal-Shaft1
18***88Kit-Bearing1
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243-6639 Motor Gp-Piston -Hydrostatic Drive, Lh
15***38Bolt7
15***88Washer; (17.54x24x0.3-mm Thk)1
15***89Plate-Retaining1
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243-6640 Motor Gp-Piston -Hydrostatic Drive, Rh
09***29Ring; (Retaining)1
12***55Shim; (4.5-mm Thk)1
12***56Shim; (4.6-mm Thk)1
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206-7267 Mounting Gp-Pump
11***70Ring-Retaining1
12***01Spring Set1
12***02Swashplate1
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290-4571 Power Train Ar
11***70Ring-Retaining1
12***01Spring Set1
12***02Swashplate1
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236-2122 Pump & Mtg Gp-Power Train
23***22Pump & Mtg Group-Power Train1
25***95Sprocket-Track1
3S***82Bolt; (5/8-18x1.84-In)27
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278-4448 Pump Gp-Charge -Hydrostatic Drive, Lh
03***39Seal-O-Ring (Id=9.25mm)1
24***62Ring-Backup1
26***76Seal-O-Ring1
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278-4449 Pump Gp-Charge -Hydrostatic Drive, Rh
06***40Seal-O-Ring (Id=37.69mm)1
10***17Seal-O-Ring2
10***41Plug1
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243-6637 Pump Gp-Piston -Hydrostatic Drive
09***33Ring-Retaining1
12***94Plug; (Break Off)1
12***69Plug1
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261-3629 Pump Gp-Piston -Hydrostatic Drive, Lh
08***39Seal-O-Ring (Id=26.64mm)2
09***50Seal-O-Ring (Id=10.82mm)2
14***20Bolt-Socket Head; (M6x1x75-mm)4
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261-3630 Pump Gp-Piston -Hydrostatic Drive, Rh
16***15Retainer-Spring1
18***10Screw1
20***42Spring1
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228-4004 Rotating Gp-Motor
13***24Bar4
16***03Spacer; (13.87x21.34x14-mm Thk)2
17***29Pin4
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278-8934 Rotating Gp-Motor -Hydrostatic Drive
22***94Lock As1
27***34Rotating Group-Motor; -Hydrostatic Drive1
28***62Cam-Latch1
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322-9755 Rotating Gp-Motor -Hook
22***94Lock As1
25***78Cam-Latch1
28***73Plate As1
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228-4002 Rotating Gp-Motor -Boom
14***09Plug20
14***26Plug2
22***02Rotating Group-Motor; -Vibratory Piston Motor1
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191-0885 Rotating Gp-Motor -Hydrostatic Drive
14***27Connector Group2
14***34Connector Group2
14***35Connect Group; (Each Includes)2
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278-4438 Rotating Gp-Pump -Hydrostatic Drive, Rh
09***18Nut (M6x1.0 Thd)4
21***43Shim; (1-mm Thk)1
26***28Bracket1
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278-4437 Rotating Gp-Pump -Hydrostatic Drive, Lh
09***18Nut (M6x1.0 Thd)4
15***20Cam-Latch1
21***43Shim; (1-mm Thk)1
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252-9136 Segment Gp-Sprocket
25***36Segment Group-Sprocket1
27***23Lock As1
29***24Door As; (Lh)1
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301-7890 Valve Gp-Check
12***28Washer-Hard; (26x40x8-mm Thk)8
24***51Drawbar As1
24***66Pin1
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278-8937 Valve Gp-Flushing -Hydrostatic Drive
19***77Washer-Hard; (11x25x10-mm Thk)3
26***34Bracket As; (Rh)1
26***35Bracket As; (Lh)1
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278-8936 Valve Gp-Motor Control -Hydrostatic Drive
16***03Spacer; (13.87x21.34x14-mm Thk)2
21***95Pin As2
27***36Valve Group-Motor Control; -Hydrostatic Drive1
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278-4442 Valve Gp-Pump Control -Pressure, Flow Compensator
16***03Spacer; (13.87x21.34x14-mm Thk)2
21***95Pin As2
27***42Valve Group-Pump Control; -Pressure, Flow Compensator1
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6e-4402 Valve Gp-Relief -Charge Pressure
09***49Bolt; (M8x1.25x40-mm)1
13***24Bar5
15***99Pin As1
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253-1803 Valve Gp-Transmission Control -Power Train Return Manifold
09***49Bolt; (M8x1.25x40-mm)1
13***24Bar5
15***99Pin As1
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Service Equipment And Supplies
304-2715 Film Gp
206-7281 Lines Gp-Diagnostic
290-4588 Plate & Film Gp
312-4375 Plate & Film Gp -International
31***75Plate & Film Group; -International1
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294-5763 Plate & Film Gp -Nacd
Steering And Braking System
267-6709 Manifold & Valve Gp -Return Manifold
12***51Kit-Seal; (Pressure Relief Valve)1
17***68Valve Group-Check; (Reversing Fan)1
20***86Valve Group-Relief; (Hydraulic Fan Motor)1
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Undercarriage
346-2871 Bar Gp-Equalizer
19***78Washer-Hard; (13.5x30x12-mm Thk)12
27***85Guard As; (Rh)2
27***86Guard As; (Lh)2
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314-5258 Bar Gp-Equalizer -Lgp
218-4992 Cap Gp-Track Roller -Systemone
09***35Seal-Lip Type1
09***15Ring-Back-Up2
09***12Seal-O-Ring (Id=49.60mm)2
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290-4591 Cover Gp-Guard
23***40Spring1
23***42Support1
23***43Spring Group-Recoil1
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296-2757 Frame Gp-Track Roller -Lh
23***29Link-Track2
23***33Shoe-Track40
23***72Bolt-Track; (M18x1.5x59-mm, Systemone)160
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296-2756 Frame Gp-Track Roller -Rh
11***13Bolt-Hex Head; (M16x2x70mm)6
16***09Bolt-Hex Head; (Mj16x2.0x50mm)2
23***47Spring Group-Recoil1
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251-8579 Guard Gp-Track Guide -Systemone
23***29Link-Track2
23***72Bolt-Track; (M18x1.5x59-mm, Systemone)160
23***73Nut-Track; (M18x1.5-Thd, Systemone)160
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234-4744 Guard Gp-Track Guide -Center
23***44Guard Group-Track Guide; -Center1
23***29Link-Track2
23***34Shoe-Track40
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248-3927 Idler Gp-Front
22***71Roller Group-Track Carrier; -Heavy-Duty, Systemone2
23***11Idler Group-Track2
23***17Guard Group-Sprocket1
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239-8211 Idler Gp-Track
10***93Poppet2
21***03Plug As2
21***04Spring2
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311-6644 Link As-Track -Systemone
06***35Valve-Gas1
11***10Protector-Gas Valve1
1J***71Seal (10.52 Degrees I.D.); Seal-O-Ring -- To Adapter1
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311-6643 Link As-Track Box -Link Box
11***10Protector-Gas Valve1
19***50Core1
1J***71Seal (10.52 Degrees I.D.); Seal-O-Ring -- To Adapter1
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248-3914 Pivot Bar Gp -Lgp
240-8933 Roller Gp-Track -Systemone
227-5971 Roller Gp-Track Carrier -Heavy-Duty, Systemone
16***03Spacer; (13.87x21.34x14-mm Thk)2
22***71Roller Group-Track Carrier; -Heavy-Duty, Systemone1
29***84Cylinder Group-Tilt; -Counterweight1
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271-6071 Scraper Gp-Idler
14***76Ring-Wear1
14***56Ring-Wear1
16***85Seal As-Buffer1
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239-8247 Spring Gp-Recoil
09***49Bolt; (M8x1.25x40-mm)4
14***38Adapter, -6 Orb / Orfs X-Long1
14***64Elbow, 90°,-8 Orb /-8 Orfs1
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239-8243 Spring Gp-Recoil
23***43Spring Group-Recoil1
25***44Tank & Mtg Group-Hydraulic1
29***82Lines Group-Counterweight1
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239-8215 Track Adjuster & Recoil Gp
14***27Connector Group4
14***47Elbow; (-12 Orb/Orfs)1
14***60Elbow Group2
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235-2541 Track Gp -2-Required, Systemone
11***65Adapter1
14***26Plug3
14***19Connector As1
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277-2247 Track Gp -2-Required, Systemone
11***65Adapter1
14***26Plug2
14***19Connector As1
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235-2540 Track Gp -2-Required, Systemone
11***34Tee-O-Ring1
12***72Tee1
14***45Connector As1
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290-4573 Undercarriage Ar -Lgp
17***68Valve Group-Check; (Reversing Fan)1
21***92Valve Group-Solenoid; -Hydraulic Fan1
29***73Undercarriage Ar; -Lgp1
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Work Tools
106-5767 Block Gp-Load Sheave
10***67Block Group1
14***18Connector As1
14***26Adapter; (Straight) (-4 Orb X -4 Orfs)2
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108-7845 Block Gp-Load Sheave -Upper
10***45Block Group; -Upper1
13***59Plate-Identification; (Engine Stop, Run)1
13***58Film; (Identification) (On Radiator Filler Cap) (On Near Of Radiator Filler Cap)2
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108-7851 Block Gp-Load Sheave -Lower, Hook
10***51Block Group; -Lower, Hook1
22***36Film-Warning; (Electrocution)1
22***13Film; (Warning) (Jump Start) (Inside Of Lh Battery Box Cover)1
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294-5768 Block Gp-Boom Sheave
10***52Brake Group; -Hook1
11***60Drive Group; -Winch, Hook1
29***68Block Group-Boom Sheave1
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300-1624 Block Gp-Boom Sheave
25***61Film-Information; (Cat Power, Acert Technology)2
27***62Film-Identification; (Cat)1
27***65Film-Identification; (Caterpillar)1
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235-8570 Boom Gp
22***54Film-Warning; (Universal, Read Omm, Intl)1
22***79Film-Warning; (Electrocution)1
22***12Film; (Warning) (Jump Start) (On Outside Of Battery Compartment Door)1
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108-5852 Brake Gp-Winch -Hook
106-5770 Brake Gp-Winch -Boom
290-4584 Lines Gp-Winch -Boom
290-4583 Lines Gp-Winch -Hook
296-7685 Motor Gp-Piston -Hook
296-7684 Motor Gp-Piston -Boom
294-5775 Winch Ar-Boom
294-5776 Winch Ar-Load
294-5778 Winch Gp-Boom
294-5779 Winch Gp-Hook

PL61 serial number reference

The PIN plate is riveted to the right side of the main frame near the operator's station, and is also stamped into the frame rail itself; it reads as a 3-letter prefix followed by a sequential unit number (e.g. WGS00175). The prefix identifies the model/build series and plant, the trailing digits are the build sequence - Cat dealers use the full PIN in SIS to pull the exact build date and factory option content.

PrefixIdentifies
WGSPL61 and PL61 LGP sideboom pipelayer, Cat C6.6 ACERT engine, hydrostatic drive

Frequently asked questions

What engine does the Caterpillar PL61 use?

The PL61 has run two engine generations: an earlier Cat C6.6 ACERT rated about 93 kW (125 hp), meeting Tier 3/Stage IIIA emissions, and a later Cat C4.4 ACERT rated about 97 kW (130 hp), meeting Tier 4 Final/Stage IV. A Cat C7.1 engine is offered as an alternate option in regions with lighter emissions requirements. Confirm which engine is fitted by serial number range before ordering engine parts.

What is the operating weight of the Caterpillar PL61?

Operating weight varies by track shoe width and series, running roughly 17,000-18,640 kg (37,480-41,095 lb). Narrow 560 mm (22 in) shoes sit at the lighter end; low-ground-pressure 760 mm (30 in) shoes push toward the top end. Check the exact configuration and generation before comparing weight figures between machines.

What did the Caterpillar PL61 replace, and what replaced it?

The PL61 replaced Cat's earlier 561N pipelayer. Within its own lineage, the Tier 4 Final C4.4-powered series superseded the original Tier 3 C6.6-powered series; Cat has not announced a distinct successor model, and the PL61 remains its compact pipelayer offering.

What PL61 owners discuss

What powertrain is actually in the PL61, and how does it feel to run?
The PL61 is built around a Cat C6.6 ACERT engine (roughly 93 kW / 125 hp at 2100 rpm), driving a closed-loop electronic hydrostatic system with independent control to each track. Operators used to older mechanical pipelayers describe the hydro drive as noticeably smoother for creeping along a right-of-way and for quick direction changes without clutch shock. Because it is hydrostatic, drive performance leans hard on charge pressure - a tired charge pump reads a lot like a failing final drive motor, so charge pressure gets checked first, not the drive motor.
What undercarriage wear pattern should owners expect on this machine?
PL61 uses Cat's oval-track SystemOne undercarriage, a sealed-and-lubricated design where the bushing rotates with the sprocket instead of sliding against a dry pin. In normal pipeline dirt/grade work it holds up well and stretches service life versus older-style chain. On rocky right-of-way or where the track skips and binds in reverse, front idler mounting points and the sealed joints take more punishment than the marketing numbers suggest, and the common field fix has been bolt-on rock guards rather than a redesign. Because SystemOne pins and bushings are not a field-rebuildable item the way older link chain was, expect a module/assembly replacement rather than a bushing turn when wear limits are reached - budgets should plan around that.
Are there known engine quirks specific to the C6.6 ACERT in this class of machine?
Owners and shops working on C6.6 ACERT engines (the family used across several small Cat dozer/pipelayer platforms) report a recurring pattern: HEUI-style injectors that get rough at idle or lose power as they wear, hard-starting complaints traced to the high-pressure pump, the rail check valve, or the engine speed/timing sensor, and diesel particulate filter plugging that shows up as hunting idle or a stuck backpressure valve if regens are skipped. Valve lash is commonly checked around 500 hours on a new or rebuilt engine and roughly every 1000 hours after that. None of this is unique to the PL61 chassis - it is engine-family behavior - so weigh it against the specific serial/emissions tier of the unit in front of you.
What electrical or sensor issues come up around the boom and load-monitoring system?
The PL61 offers a wireless load-monitoring indicator (a Cranesmart-type system) feeding the operator real-time load data, plus an optional rear-vision camera with its own display. Both are add-on electronic packages layered onto the base machine, so a fault typically isolates to the sensor/wireless link or display rather than the hydrostatic or engine controls. On the engine side, hard-starting complaints tied to the speed/timing sensor (noted above) are the more common electrical gripe. Confirm any load-monitoring or camera fault with your dealer before trusting displayed lift data - this is a safety-critical reading, not just a convenience feature.
What should a buyer check on a used PL61 before making an offer?
Walk the undercarriage like you would on a crawler tractor: pads and bolts tight, no missing hardware, sprocket teeth and sealed-joint wear, final drive seals dry, track frame and sway bars free of scarring from hard-surface contact. Pop the engine compartment and look for chafed wiring, damaged hoses, and any wet spots that point to a hydraulic leak. Cycle the boom, hoist, and counterweight through full range and listen for abnormal noise or hesitation - creeping boom position under a static hold is a sign of internal cylinder seal bypass. Confirm all lights, the back-up alarm, rear camera (if equipped), and the ROPS/canopy structure are intact with no bends. Ask for the emissions tier and hour meter history together, since PL61 spans pre- and Tier 4 Final configurations with different DPF/regen behavior.
Why does the boom or counterweight seem to creep on an older unit?
On aging sideboom-style pipelayers, gradual internal seal bypass in the boom or counterweight cylinders lets the load settle slowly even with the control centered - commonly called creeping. A pilot-operated check valve or a mechanical lock is the standard safeguard against this during static holds with pipe suspended. If a used or in-service PL61 shows any boom or counterweight drift while parked under load, do not rely on hydraulic lock alone - have your dealer verify the counterbalance/pilot check valves and cylinder seal condition before the machine goes back into lifting service.
Does the hydrostatic drive or undercarriage change much across PL61 production, or is it one consistent setup?
Caterpillar updated the PL61 line over its production run - steering response was quickened and load capacity/rated lift were revised, and emissions compliance moved through at least one tier change up to Tier 4 Final/Stage IV. The core layout (C6.6 ACERT engine, closed-loop hydrostatic drive, oval SystemOne undercarriage) stayed consistent, but exact operating weight, lift rating, and emissions hardware vary by configuration and model year. Treat any single spec number as a starting point and confirm it against the specific serial/build of the unit in question.

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

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