Caterpillartrack-type tractorwinch

Caterpillar 59N

Maintenance schedule, common problems & OEM parts breakdown

The Caterpillar 59N is the basic-model code for the D9N, a large elevated-sprocket track-type tractor built from roughly 1986/87 through 1995 under PIN prefix 1JD. It sits in Cat's heavy dozer class, powered by a mechanically injected Cat 3408 DITA V8 diesel (18.0 L / 1,099 cu in) rated at approximately 370 hp (280 kW) net flywheel power, driving a 3-speed powershift transmission through clutch-and-brake steering. Operating weight runs roughly 42-48 tonnes (about 93,000-107,000 lb) depending on blade and ripper fitment. The D9N replaced the D8L in 1987 and was itself replaced by the D9R in 1996, sitting between the two in Cat's medium-high-drive dozer lineup. Caterpillar offered it with straight, semi-U, and universal blade options plus single-shank or multi-shank ripper attachments for production dozing, pipeline, and land-clearing work.

Through its production run the D9N stayed mechanically stable: Cat kept the DITA fuel system and the powershift/clutch-brake drivetrain in place while refining cab structure, ROPS/FOPS protection, hydraulic controls, and undercarriage sealing in step with the rest of the elevated-sprocket family it shares with the D8L before it and the D9R after it. That mechanical simplicity is exactly why the D9N still matters in the used and parts market today: no electronic engine controls to fail, a modular elevated-sprocket final drive that pulls and rebuilds without splitting the main frame, and broad parts commonality across the D8L/D9N/D9R generation of elevated-sprocket tractors. Buyers still run 59N/D9N units in mining, quarry, and pipeline fleets where field-serviceable mechanical systems outweigh the efficiency gains of later electronic models.

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 59N specifications

Identification

Model familyCat 59N is the model/catalog code for the D9N track-type tractor, standard-gauge configuration, serial number prefix 1JD (1JD00001-UP).
Production spanBuilt 1986/1987 to 1995. Replaced the D8L in the lineup and was itself replaced by the D9R in 1996.
Configurations coveredStandard-gauge (base 59N/1JD) and WDA wide-gauge (swamp/wide track) arrangement. No LGP or XL version was offered on the D9N; XL and LGP designations belong to the smaller D-series models, not the D9N.

Engine

Engine modelCat 3408 DITA, direct-injection, turbocharged, aftercooled V8 diesel
Displacement18.0 L (1,099 cu in)
Bore x stroke137 mm x 152 mm (5.40 in x 6.00 in)
Gross power299 kW (401 hp)
Net / flywheel power276 kW (370 hp)
EmissionsPre-emissions-regulation era engine (built before EPA Tier / EU Stage certification existed for this class); no emissions tier rating published.
Electrical systemReported as 24V electric start in engine-detail listings, 12V in general overview listings for the same model; treat as unconfirmed and check the machine dataplate.

Weights

Operating weight, standard-gaugeapprox. 42.5 t / 42,542 kg (93,789 lb)
Operating weight, WDA wide-gaugeapprox. 46.8 t / 46,815 kg (103,210 lb)
Weight variance noteSome aggregator listings show heavier figures, up to about 48.8 t (107,586 lb) and 51 t (112,496 lb), likely reflecting ripper-equipped or fully optioned units rather than base shipping weight. Varies by configuration and attachments — confirm against the specific unit's dataplate.

Dimensions

Overall length, with blade (standard)6.87 m (22 ft 6 in / 22.54 ft)
Overall length, without blade5.18 m (17 ft / 16.97 ft)
Width over tracks, standard-gauge2.90 m (9.49 ft)
Height to top of cab3.93 m (12.83 ft)
Ground clearance0.51 m (1.66 ft / approx. 20 in)
Track gauge, standard2.26 m (7.39 ft)
Track gauge, WDA wide
Length of track on ground3.47 m (11.39 ft)
Standard shoe width610 mm (24 in)

Performance

TransmissionPowershift, 3 forward / 3 reverse gears
Max travel speed, forward (top gear)12.2 km/h (7.6 mph)
Max travel speed, reverse (top gear)15.0 km/h (9.3 mph)
Ground pressure, standard-gauge98.4 kPa (14.3 psi)
Ground pressure, WDA wide-gaugeLower than standard due to increased track-ground contact area from wider gauge and shoes; specific published figure not found — verify with dealer.
Drawbar pullNot published in available spec sheets for this series. Contemporary big-dozer drawbar-pull figures are commonly quoted only for later D9 generations (D9R/T and newer); treat any D9N-specific number as unverified until confirmed with a dealer or factory spec sheet.
GradeabilityNot documented in available spec sheets for this model — verify with dealer.

Blades

Standard S-blade width4.32 m (14.2 ft)
Standard S-blade height1.81 m (71.3 in)
Standard S-blade capacity11.9 m3 (15.6 yd3)
Standard S-blade cutting depth0.61 m (24.1 in)
WDA blade width4.32 m (14.2 ft)
WDA blade capacityListed at roughly 26.3 m3 (34.4 yd3) in aggregator data — notably larger than the standard-gauge blade and not cross-checked against a second independent source. Treat as indicative only and confirm before quoting to a customer.
WDA blade cutting depth0.61 m (24.1 in)

Service capacities

Fuel tank792 L (209.3 US gal)
Hydraulic system89.3 L (23.6 US gal)
Hydraulic pump flow310 L/min (81.9 US gpm)
Cooling systemNot documented in available spec sheets for this model — verify with dealer or shop manual.
Engine oilNot documented in available spec sheets for this model — verify with dealer or shop manual.

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

59N fluids & capacities

SystemCapacityRecommended fluid
Machine identificationn/aSerial number prefix 59N identifies the Caterpillar D9N track-type tractor (machine range 1JD00001-up and related prefixes such as 6XJ, 2ZJ, 7AJ). Built roughly 1986 to 1995/96, between the D9L and the D9R. Powered by the Cat 3408 DITA (direct-injection, turbocharged, aftercooled) V8 diesel, approximately 18.0 L displacement, rated near 306 kW (410 hp) gross / 280 kW (375 hp) net. Uses clutch-and-brake steering with an elevated-sprocket, modular power train (transmission withdraws from the rear of the tractor).
Engine crankcase (with filter)Approximately 38-46 L (10-12 US gal) is typical for a 3408-family application, but the exact D9N crankcase-with-filter figure is not confirmed against this machine's own refill chart. Treat as approximate and verify against the machine's own OMM or dipstick markings before servicing.Cat Diesel Engine Oil (Cat DEO), heavy-duty diesel engine oil of the API category current for a mid-1980s-to-mid-1990s Cat machine (CD/CE/CF-4 era). SAE 15W-40 is the typical warm-to-moderate-climate grade; SAE 10W-30 is used in colder ambient conditions. Select grade by the machine's ambient temperature range at startup, per Cat's standard multigrade selection practice for this generation of equipment.
Cooling systemApproximately 81 L (21 US gal) reported for the D9N cooling system, but this figure comes from a single source and is not cross-verified. Treat as an estimate pending confirmation against the OMM.Cat heavy-duty diesel engine coolant/antifreeze of the conventional (non-extended-life) type used in this era of Cat machine — Extended Life Coolant (ELC) postdates this machine generation and should not be assumed unless the cooling system has been converted.
Fuel tank792 L (209 US gal). Cross-verified across independent spec listings for the D9N.No. 2-D diesel fuel meeting Cat's standard diesel fuel specification for the 3408 engine.
Powershift transmissionNot documented in the sources reviewed for this exact serial range. The D9N power train is a modular design (the powershift transmission withdraws from the rear of the machine as a unit); do not assume figures from other D-series dozers, as case sizes differ by model.Cat Transmission/Drive Train Oil (Cat TDTO), meeting the TO-4 specification. Grade selected by ambient temperature (commonly SAE 10W in cold conditions, SAE 30 in moderate conditions, SAE 50 in hot conditions) per Cat's standard drive-train oil selection practice for machines of this era.
Bevel gear and steering clutch compartmentNot documented in the sources reviewed. On dozers of this architecture the bevel gear and steering clutch/brake assembly is typically its own oil-filled compartment separate from the transmission case, but the D9N-specific refill quantity could not be confirmed.Cat TDTO (TO-4 spec), same family of oil as the transmission and final drives, graded by ambient temperature.
Final drives (each side)Not documented in the sources reviewed for the D9N specifically. The elevated-sprocket final drives are oil-lubricated, serviced independently on each side of the machine.Cat TDTO (TO-4 spec) or a dedicated Cat final drive/axle oil of equivalent TO-4 performance, graded by ambient temperature.
Hydraulic system/tank89 L (23.5 US gal). Cross-verified across independent spec listings for the D9N.A TO-4-spec Cat drive-train oil or hydraulic-grade oil appropriate to this generation of machine (Cat TDTO or equivalent hydraulic oil); exact brand-name call-out from the machine's own OMM could not be confirmed, so verify against the OMM's fluids table before topping off, particularly for cold-climate grade selection.
Pivot shaft (equalizer bar)Not documented in the sources reviewed. The pivot shaft is confirmed as its own serviceable, oil-filled reservoir (distinct from the track/roller grease fittings) and is checked at the 250-service-hour interval; a rubber seal at this location is a known wear point whose failure causes loss of the shaft's lube oil.Oil-lubricated per Cat's standard pivot-shaft practice for this class of dozer; exact fluid name not confirmed for the D9N OMM — verify against the machine's own lubrication chart.
Grease points (track, rollers, idlers, linkage)n/a — serviced by application at grease fittings, not a fill-and-check reservoir.General-purpose NLGI Grade 2 multipurpose grease, applied at the daily/10-hour, 250-hour and other scheduled grease points per the machine's lubrication chart. A specific Cat-branded grease name for the D9N OMM could not be confirmed; the era-appropriate general recommendation is a multipurpose lithium-complex or equivalent EP grease of NLGI 2 consistency.
Viscosity-by-climate notesn/aNo D9N-specific viscosity/temperature chart was located. General Cat practice for this generation of machine selects engine oil grade (10W-30 vs 15W-40) and drive-train oil grade (10W, 30, 50) by the coldest expected ambient starting temperature, with lighter grades for cold climates and heavier grades for hot, sustained-load conditions. Confirm exact break points against the machine's own Operation and Maintenance Manual.

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

Caterpillar 59N maintenance schedule

Service intervalTasks
Every 50 h
  • Check engine oil level before starting and top up as needed
  • Walk around the machine and check for fuel, oil, and coolant leaks
  • Drain water and sediment from the fuel tank and the primary fuel filter/water separator
  • Check coolant level in the expansion tank and inspect hoses for chafing
  • Inspect track tension, shoes, and elevated-sprocket idlers for wear or damage
  • Grease blade lift/tilt and ripper pivot pins on the weekly (50-hour) round
Every 250 h
  • Change engine oil and the engine oil filter on the 3408 DITA
  • Check and adjust fan and alternator belt tension
  • Lubricate steering clutch and brake linkage and control shafts
  • Check battery electrolyte level and terminal condition
  • Clean the primary fuel strainer and check the fuel tank cap vent
  • Inspect ripper shank/boot wear and blade cutting edges and end bits
Every 500 h
  • Change the powershift transmission oil and filter
  • Pull engine, transmission, and hydraulic oil samples for S.O.S analysis
  • Check final drive oil level at each elevated-sprocket housing
  • Replace the hydraulic tank breather and inspect the implement hydraulic filter
  • Check track adjustment and inspect elevated-sprocket case seals for leakage
  • Inspect turbocharger mounting and boost lines for leaks
Every 1,000 h
  • Change final drive (elevated-sprocket case) oil
  • Change bevel gear and steering clutch compartment oil
  • Replace transmission and hydraulic system oil filters
  • Inspect and adjust steering clutch discs and brake bands
  • Check alternator, starter motor, and wiring harness condition
  • Inspect the torque converter/transmission oil cooler for internal leakage
Every 2,000 h
  • Change engine coolant and flush the cooling system
  • Check and adjust engine valve lash on the 3408 DITA
  • Check fuel injection timing and inspect injector condition
  • Inspect and reseal the elevated-sprocket drive housings as required
  • Clean and pressure-test the radiator core and oil coolers
  • Inspect ROPS/FOPS cab mounts and structural welds on the C-frame and blade arms
Every 6,000 h
  • Rebuild or inspect the torque converter and powershift clutch packs
  • Turn or replace track shoes, bushings, and rollers once undercarriage wear limits are reached
  • Overhaul the injection pump and injectors on the 3408 DITA
  • Inspect the main frame, trunnions, and blade push-arms for cracking
  • Rebuild final drive planetaries and elevated-sprocket bearings at major overhaul

Servicing the 59N beyond the schedule

Predictive maintenance & fluid analysis

On a 59N/D9N, S.O.S sampling of engine, powershift transmission, and elevated-sprocket final drive oil is the earliest warning system available, since the 3408 DITA runs mechanical unit injection with no onboard diagnostics. Track oil samples for iron and copper trends that flag steering clutch or final drive wear before it reaches the case. Watch coolant condition closely: mechanically injected 3408s run hot under sustained dozing loads, and additive depletion shows up in sample data long before a temperature gauge moves.

Corrective & common repairs

Clutch-and-brake steering wears the steering clutch discs and brake bands faster than the differential-steer systems that followed on the D9R, so band adjustment and disc inspection are the most common corrective jobs on a 59N. Elevated-sprocket case seals weep gear oil into the track guard and get missed until oil level drops. On the engine side, expect injector and unit-pump wear from age and fuel quality, plus turbocharger bearing failures on high-hour DITA engines still running original mechanical fuel systems.

Overhaul & rebuild points

Major rebuild points on the 59N center on the powershift transmission and torque converter, the elevated-sprocket final drives, and the undercarriage. Clutch packs and converter stators wear steadily under dozing loads and typically need attention well before the engine does. The modular elevated-sprocket design lets final drives and planetaries come out as a unit for rebuild without splitting the main frame. Track shoes, bushings, and rollers reach turn-or-replace limits together on high-hour machines, and the C-frame and push-arm pins deserve a crack check at every major overhaul.

Seasonal & environmental servicing

Cold starts on a mechanically injected 3408 DITA depend on ether starting aid condition and correct coolant freeze protection, since there is no electronic cold-start strategy to fall back on. In hot, dusty dozing environments, clean the radiator core and precleaner more often than the standard interval calls for, and watch turbocharger inlet restriction. Working in mud or standing water accelerates elevated-sprocket seal and final drive breather failures, so check drive housing oil level and track guard drains more frequently in wet seasonal conditions.

59N common service parts

Part numberPart
8C-8821Film-IdentificationCheck fitment →
8C-8902FilmCheck fitment →
8C-7319Transmission FilterCheck fitment →

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

59N fault codes & troubleshooting

CodeMeaningLikely causeWhat to do
Coolant Temperature warning lamp (red)Engine coolant temperature has risen above the normal operating rangeLow coolant level, blocked radiator core or grille, slipping or broken fan belt, faulty water temperature regulatorReduce load, let engine idle to cool, check coolant level and radiator for debris once safe; do not shut a hot engine down immediately
Engine Oil Pressure warning lamp (red)Engine oil pressure has dropped below the safe minimumLow oil level, worn oil pump, plugged oil filter, failing pressure sender or wiringStop the engine immediately, check oil level and inspect for leaks before restarting
Charging System warning lamp (amber/red)Alternator output or battery system voltage is outside the normal rangeLoose or broken alternator belt, worn brushes or diodes in the alternator, corroded battery or wiring connectionsCheck belt tension and battery connections, test alternator output with a multimeter
Power Train (torque converter) oil filter bypass lampPower train oil is bypassing a restricted filter elementClogged power train filter, cold and thickened oil, degraded filter elementReplace the power train oil filter and check oil condition and viscosity grade
Parking Brake engaged indicator lampParking/steering brake is appliedOperator has set the parking brake, or the brake switch/linkage is faulty and reads engaged when releasedConfirm brake lever position; if lamp stays lit with brake released, check the brake switch and wiring
Action lamp (amber, general alert)General attention indicator tied to the audible alarm, lights when any monitored gauge parameter (temperature, pressure, level) moves outside its normal bandAny one of the monitored conditions above is out of rangeScan the gauge cluster to identify which specific gauge or lamp is abnormal, then follow that system's own check

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

59N attachments & work tools

Blades

D9N came standard with an S-type straight blade: 4.33 m (14.2 ft) wide, 1.81 m (71.3 in) tall, 620 mm (24.4 in) max cutting depth, rated at 11.9 m3 (15.6 yd3) capacity, moved by four hydraulic cylinders (two lift, two tilt) on the elevated-sprocket push-arm frame shared with the D8L/D9R family. An SU (semi-universal) blade was also catalogued for the class, with a curved moldboard and short side wings giving better load control than the straight blade and more versatility than a full U-blade; exact D9N-specific width/capacity figures vary by source, so confirm against the dealer catalog for the build date. A dedicated waste-disposal build (factory-designated D9N WDA) carried a tall U-blade rated around 26.3 m3 (34.4 yd3), roughly double the standard blade's capacity, at a correspondingly higher machine operating weight (about 103,200 lb versus about 93,800 lb base). VPAT (variable-pitch-angle-tilt) blades were not offered on the D9N; that feature was reserved for the smaller high-drive class of the era, so D9N blade pitch is fixed with hydraulic tilt only.

Rippers

The D9N's rear ripper attachment used a parallelogram linkage with four hydraulic cylinders (two lift, two tilt) and was catalogued in single-shank and multi-shank (three-shank) versions sharing a common frame and rear mount. Single-shank rigs run one heavy shank (tip assembly around 560 kg / 1,235 lb) for maximum penetration force in hard rock or hardpan ripping; multi-shank rigs carry three lighter shanks (roughly 290 kg / 637 lb per shank) for higher-production ripping of looser or layered overburden at reduced per-tooth force. Complete ripper group weight runs roughly 4.5-5.5 t depending on configuration; figures vary by configuration and source, so verify against the specific ripper group ordered. The ripper is not standard equipment - it needs the machine's auxiliary/implement hydraulic valve and a dedicated hose run to the rear, ordered as a factory or dealer-fit attachment package.

Winches

Caterpillar catalogued a factory rear-mounted towing/dozer winch for the D9N in its 58-series winch line, the same winch family used on the preceding D8L, mechanically driven off the machine's power train via a power takeoff rather than hydraulically. It is a single-drum unit with an internal clutch and band brake for spooling and free-spool, engaged and controlled by a lever at the operator's station, mounted at the rear in place of or alongside the drawbar. Duty is towing, machine recovery, and log/tree-pulling rather than continuous production winching; drive-architecture detail here rests on thinner sourcing than the blade/ripper data, so confirm PTO and clutch specifics against the D9N service manual before ordering.

Drawbars/counterweights

A rear drawbar and a separate rear counterweight group are both catalogued attachment items for the D9N. The drawbar is the towing/hitch mounting point at the rear frame and is also the interface a ripper bolts to when one is fitted, so a full drawbar and a ripper are mutually exclusive at that mount point. The counterweight group bolts to the rear frame to offset the added weight of blade/front tooling and improve stability and traction on rippers or in soft footing; because the D9N shares its rear-frame casting with the D8L, drawbar and counterweight groups largely cross over to that model as well.

Cab/ROPS guarding

No dedicated factory forestry or waste-handling guarding package is documented specifically for the D9N generation in the sourcing reviewed; the D9N cab is the standard sealed/pressurized ROPS/FOPS enclosure of its era without a cataloged brush-guard or screen option. Later D9R/D9T generations picked up factory waste-handler guarding packages, but that lineage does not carry back to the D9N - any forestry brush guards or screens fitted to a D9N of this vintage would be dealer-fabricated or aftermarket rather than a Cat factory work-tool option. Verify with a dealer if a forestry-guarded D9N build is required.

Hydraulic arrangement

The base machine hydraulic system supplies the front blade circuit (lift and tilt cylinders) from the implement pump, published at roughly 310 L/min (81.9 gpm) flow against a relief setting near 186 bar (2,700 psi) on the D9N spec sheet. A rear-mounted ripper draws off the same hydraulic system through an auxiliary control valve and a separate hose run to the rear cylinders; this valve and plumbing are not part of the base machine's hydraulic package and ship with the ripper attachment kit for installation. Front (blade) and rear (ripper) tools are therefore both cylinder-actuated off one pump/valve stack rather than independent hydraulic systems, with the ripper valve added at attachment installation.

All 59N assemblies by section

Every catalogued assembly group for the Caterpillar 59N. Open an assembly to preview the parts inside — full OEM part numbers are available in Heavy Parts AI.

Air Inlet And Exhaust System
7w6611 Air Cleaner Gp
7w2872 Air Cleaner Gp
7n9399 Cartridge Gp-Turbocharger*R
7w9380 Dust Ejector Gp
4w7539 Lines Gp-Air
7w2869 Lines Gp-Air
4w1931 Lines Gp-Turbocharger Oil
8n0617 Manifold Gp-Exhaust
8n0745 Muffler Gp
7n1328 Shield Gp-Manifold-Part 1 Of 2
7n1328 Shield Gp-Manifold-Part 2 Of 2
2w5697 Turbocharger Gp*R
6n1362 Turbocharger Gp
Basic Engine
7w1660 Belt Tightener Gp
4n0965 Camshaft Gp-Single
4w5390 Cover Gp-Cylinder Block
4n6876 Cover Gp-Flywheel Housing
4N***76Cover Group-Flywheel Housing; Flywheel Housing Cover Group1
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7c0120 Cover Gp-Front Housing
4w8310 Cover Gp-Valve Mechanism
4w8310 Cover Gp-Valve Mechanism-Part 2 Of 2
4w8310 Cover Gp-Valve Mechanism-Part 1 Of 2
Crankshaft Bearing Replacement
4W***98Bearing-Main7
4W***99Bearing-Main; (1.27-mm Us)(.050in Us)7
4W***00Bearing-Main; (0.63-mm Os)(.025in Os)7
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4n0922 Crankshaft Gp
4N***22Crankshaft Group; Crankshaft Group1
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1261372 Cylinder Block As
1179512 Cylinder Block As
7n0841 Cylinder Block As
4n1201 Cylinder Block Gp
1179514 Cylinder Block Gp
1261373 Cylinder Block Gp
2w4859 Cylinder Block Gp
7w2243 Cylinder Head As*R
7w2241 Cylinder Head As
1053800 Cylinder Head As
4w7007 Cylinder Head Gp-Part 1 Of 2*R
4W***07Cylinder Head Group; Head Group-Cylinder1
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7w2242 Cylinder Head Gp
4w7007 Cylinder Head Gp-Part 2 Of 2*R
4W***07Cylinder Head Group; Head Group-Cylinder1
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6n2229 Damper Gp
7w1653 Drive Gp-Fan
6n1350 Flywheel Gp
4n6341 Gear Gp-Front Timing
4N***41Gear Group-Front; Front Timing Gear Group1
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8n0614 Gear Gp-Rear-Part 1 Of 2
8n0614 Gear Gp-Rear-Part 2 Of 2
1w1608 Housing Gp-Flywheel
1W***08Housing Group-Flywheel; Flywheel Housing Group1
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4n5226 Housing Gp-Front
4N***26Housing Group-Front; Front Housing Group1
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8n8585 Lifting Gp-Engine
7c5017 Pan Gp-Oil
2w9054 Rod & Piston Gp
2W***54Piston & Rod Group; Connecting Rod & Piston Group1
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2w9053 Piston Gp
7w2867 Pulley Gp
7w5927 Arm Gp-Valve Rocker
7W***27Rocker Arm Group; -Rear, Rh; Front, Lh1
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7w5926 Arm Gp-Valve Rocker
7W***26Rocker Arm Group; -Front, Rh; Rear, Lh1
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6n1378 Support Gp-Engine-Front
6n1379 Support Gp
7n1346 Trunnion Gp
4n7352 Valve Mechanism Gp
4N***52Valve Mechanism Group; Mechanism Group-Valve1
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Cab, Gauges And Accessories
7x6398 Lamp Gp-Dome
9p1896 Mirror Gp-Rear View
9n4369 Window Gp-Cab
9N***69Window Group-Cab; -Rear, Sliding1
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8e3447 Window Gp-Cab
6t5008 Window As-Sliding
6T***08Window Group-Cab; (Rear Sliding)1
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8y6446 Window Gp
8y6433 Window Gp
6t8403 Window As
8e3446 Window Gp-Cab
6t8402 Window As
8y6420 Window Gp-Cab
7x1982 Wiper Gp
7X***82Wiper Group; Wiper Group (Robert Bosch)1
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3t7063 Wiper Gp-Rear
9x3337 Wiper Gp
9X***37Wiper Group; Wiper Group (Robert Bosch) (Field Replacement)1
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7x1983 Wiper Gp
7X***83Wiper Group; Wiper Group (Nippondenso)1
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7t1072 Wiper Gp-Part 2 Of 3
7t1072 Wiper Gp-Part 1 Of 3
7t1072 Wiper Gp-Part 3 Of 3
6w8505 Adjuster Gp-Seat
6W***05Adjuster Group-Seat; -Suspension1
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9w2650 Air Conditioner Ar
6T***51Air Conditioner Group1
7T***82Compressor Group-Refrigerant1
7W***07Radiator Group1
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6t7851 Air Conditioner Gp-Part 2 Of 2
6t7851 Air Conditioner Gp-Part 1 Of 2
9w8508 Bottle Gp-Washer
8e4350 Cab & Platform Gp
03***28Bolt-12 Point Head (1/2-13x3.0in)4
3H***54Washer-Hard; (13.5x22.5x3.0-mm Thk)(Hard)24
4B***78Washer Current Transformer Bracket Mounting2
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8e2336 Cab Ar
3T***48Clip Assembly - Housing Plug To Housing Recp.1
7K***81Strap-Pressure & Return Hoses To1
7T***21Housing Group-Filter1
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9w4648 Cab Ar
4V***30Cover Group-Seat1
7K***81Strap-Pressure & Return Hoses To1
7T***21Housing Group-Filter1
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8e2338 Cab Ar
7T***72Wiper Group1
8E***82Liner Group-Cab1
8E***85Cab Group1
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9w7308 Cab Ar
7T***72Wiper Group1
7T***51Liner Group-Cab1
9P***92Mirror Group; -Open Rops-Rops1
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8e1087 Cab Gp
8e1085 Cab Gp-Part 2 Of 2
8e1085 Cab Gp-Part 1 Of 2
6y0463 Cab Gp
9w7307 Cab Gp-Part 1 Of 2
9w7307 Cab Gp-Part 2 Of 2
7n4297 Compressor Gp-Clutch & Refrigerant*R
7N***97Clutch & Refrig Compressor Group1
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7t5182 Compressor Gp-Refrigerant
6t5619 Control Gp-Electronic*R
6t5618 Control Gp-Electronic
6T***18Control Group-Electronic; -Fire Monitor1
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4v9830 Cover Gp-Seat Suspension
7t8618 Cylinder Gp-Valve
8c4595 Cylinder Gp-Valve
8y5874 Extension Gp-Backrest
8Y***74Extension Group-Backrest; Backrest Extension Group1
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8y5959 Extension Gp-Backrest
9w9321 Guard Gp-Vandalism
6t7850 Heater Gp-Part 1 Of 3
6t7850 Heater Gp-Part 3 Of 3
6t7850 Heater Gp-Part 2 Of 3
7t2426 Heater Gp-Cab-Part 2 Of 2
7t2426 Heater Gp-Cab-Part 1 Of 2
9w8484 Heater Gp-Fuel
6i9227 Heater Gp-Fuel
7t1421 Housing Gp-Filter
8y6823 Housing Gp-Seat Suspension
1084582 Housing Gp-Seat Suspension
9w4393 Instrument Gp-Panel
7t1351 Liner Gp-Cab-Sound Suppression
8e1082 Liner Gp-Cab
9w2649 Lines Gp-Air Conditioner-Part 2 Of 2
9w2649 Lines Gp-Air Conditioner-Part 1 Of 2
7t3824 Lines Gp-Heater
9p9392 Mirror Gp
9w7305 Mounting Gp-Cab-Part 2 Of 2
9w7305 Mounting Gp-Cab
9w7305 Mounting Gp-Cab-Part 1 Of 2
8y5992 Pan Gp-Seat
6v6561 Wiper Pivot Gp
6V***61Pivot Group-Wiper Arm; (Wiper Arm)1
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9w7311 Rollover Gp-Protective
9w7310 Rollover Gp-Protective
3t8665 Screen Gp-Protective
9u9634 Screen Gp-Protective
9w9572 Screen Gp-Protective
1224617 Seat Belt Gp
12***17Seat Belt Group; -Retractable-Operator1
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8y3792 Seat Belt Gp
8Y***92Seat Belt Group; -Retractable-Operator1
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7g6824 Seat Gp
9c5986 Seat Gp-Suspension
8y5976 Seat Gp
8y5986 Seat Gp
8Y***86Seat Group; Seat Gp-Basic (Fabric) (Lumbar)1
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8y6138 Seat Gp-Suspension-Fabric-Lumbar
8Y***38Seat Group-Suspension; -Cloth, Lumbar1
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6w9744 Seat Gp-Suspension
6W***44Seat Group-Suspension; -Vinyl, Low Back1
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8y6179 Seat Gp-Suspension-Vinyl
8y6138 Seat Gp-Suspension
8Y***38Seat Group-Suspension; -Cloth, Lumbar1
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7n9129 Shutoff Gp-Solenoid
6y5550 Suppression Ar-Sound
4B***58Screw (Identification Plate) Mounting4
6Y***50Suppression Ar-Sound1
7X***84Plate Group1
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9w7418 Suppression Gp-Fire-Part 2 Of 4
9w7418 Suppression Gp-Fire-Part 3 Of 4
9w7418 Suppression Gp-Fire-Part 1 Of 4
9w7418 Suppression Gp-Fire-Part 4 Of 4
8y5888 Suspension Gp-Seat
1084082 Suspension Gp-Seat
10***82Suspension Group-Seat; -Contour-Shock Absorber1
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6w8502 Suspension Gp-Seat-Part 2 Of 2
6w8502 Suspension Gp-Seat-Part 1 Of 2
9w6453 Cylinder & Valve Gp
9w6454 Cylinder & Valve Gp
8c4594 Cylinder & Valve Gp
8c4593 Valve & Cylinder Gp
8t9686 Valve & Cylinder Gp
8t9687 Cylinder & Valve Gp
7t8620 Valve Gp-Actuator Release
7t8619 Valve Gp-Actuator Release
9w8507 Washer Gp-Part 1 Of 2
9w8507 Washer Gp-Part 2 Of 2
8e5113 Window As-Sliding
6T***02Window Group-Cab1
8E***46Window Group-Cab; -Sliding, Rh1
8E***13Window Group-Sliding; -Rh1
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8e5112 Window As-Sliding
6T***08Window Group-Cab; (Rear Sliding)1
8E***12Window Group-Sliding1
9N***69Window Group-Cab; -Rear, Sliding1
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8e5114 Window As-Sliding
6T***03Window Group-Cab1
8E***47Window Group-Cab; -Sliding, Lh1
8E***14Window Group-Sliding; -Lh1
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3t7064 Wiper Gp-Sensor
3T***64Wiper Group-Sensor1
7X***82Wiper Group; Wiper Group (Robert Bosch)1
7X***83Wiper Group; Wiper Group (Nippondenso)1
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Chassis And Undercarriage
Pivot Shaft Bearings
6i9890 Cap Gp-Track Idler-8 Required
9w4485 Cap Gp-Track Idler-8 Required
6t1141 Cap Gp-Track Roller & Idler-32 Required
7t3159 Case & Frame Gp
9w2243 Counterweight & Hitch Gp
7t1695 Counterweight Gp
9g9325 Counterweight Gp
7t1694 Counterweight Gp
8e9052 Counterweight Gp
6t3583 Counterweight Gp
7t7942 Drawbar Gp
9w6514 Enclosure Gp
7t9973 Enclosure Gp
3p8763 Bar Gp-Equalizer
7t7610 Fender Gp-Part 1 Of 2
7t7610 Fender Gp-Part 2 Of 2
8e6251 Frame Gp-Telescoping Recoil (Rh)
8E***51Frame Group-Telescoping Recoil; -Rh1
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9w9536 Frame Gp-Telescoping Recoil
8e6252 Frame Gp-Telescoping Recoil (Lh)
8E***52Frame Group-Telescoping Recoil; -Lh1
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6t2001 Frame Gp-Telescoping Recoil
7w6006 Grid Gp-Sand Blast
9w5065 Guard Gp-Bottom
7t6929 Guard Gp-Radiator-Part 1 Of 2
7t6929 Guard Gp-Radiator-Part 2 Of 2
1388223 Guard Gp-Seal
13***78Stud-Bolt4
13***21Plate2
13***23Guard Group-Seal1
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7t6930 Hood & Guard Gp
7t6930 Hood & Guard Gp-Part 2 Of 2
7t6930 Hood & Guard Gp-Part 1 Of 2
7t0962 Idler Gp-Track-4 Required
9w9734 Idler Gp-Track-4 Required
6y8189 Link As-Track-Artic
6y8189 Link As-Track-Arctic
6y2058 Link As-Track
9w6025 Link As-Track
7t7635 Lubrication Gp-Pivot Shaft
9w4096 Platform Gp-Part 1 Of 3
9w4096 Platform Gp-Part 2 Of 3
9w4096 Platform Gp-Part 3 Of 3
6y0890 Roller Gp-Track Double Flange-8 Required
6Y***90Roller Group-Track-Double Flange1
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7t0687 Roller Gp-Track Double Flange-8 Required
7T***87Roller Group-Track-Double Flange1
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7t0682 Roller Gp-Track Single Flange-8 Required
7T***82Roller Group-Track-Single Flange1
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6y0889 Roller Gp-Track Single Flange-8 Required
6Y***89Roller Group-Track-Single Flange1
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6t2002 Suspension Gp-Bogie
8e6248 Suspension Gp-Bogie
6t6812 Track Adjuster & Recoil Gp
6y0617 Recoil & Track Adjuster Gp
8e6250 Recoil & Track Adjuster Gp (Lh)
8E***50Track Adjuster & Recoil Group; -Lh1
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8e6249 Recoil & Track Adjuster Gp (Rh)
8E***49Track Adjuster & Recoil Group; -Rh1
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9w5776 Track Gp-2 Required
5P***21Nut-Track; (1 1/8-12 Thd)172
6Y***58Link As-Track1
7T***24Shoe-Track43
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6y8188 Track Gp-2 Required
5P***21Nut-Track; (1 1/8-12 Thd)172
6Y***34Shoe-Track43
6Y***36Shoe-Track Master1
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9w4168 Track Gp-2 Required
5P***21Nut-Track; (1 1/8-12 Thd)172
6Y***58Link As-Track1
7T***98Bolt-Track Master; (1-1/8-12x6.46-In)2
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9w4170 Track Gp-2 Required
5P***21Nut-Track; (1 1/8-12 Thd)172
6Y***58Link As-Track1
7T***98Bolt-Track Master; (1-1/8-12x6.46-In)2
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6y8187 Track Gp-2 Required
5P***21Nut-Track; (1 1/8-12 Thd)172
6Y***87Track Group1
6Y***89Link As-Track; -Cold Weather1
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8e6253 Undercarriage Ar (Rh)
6I***90Cap Group-Track Idler4
6T***41Cap Group-Track Roller16
8E***48Suspension Group-Bogie1
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8e6254 Undercarriage Ar (Lh)
6I***90Cap Group-Track Idler4
6T***41Cap Group-Track Roller16
8E***48Suspension Group-Bogie1
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Cooling System
8n2404 Aftercooler Gp-Water
7w6170 Coolant Conditioner Gp
4n2388 Cooler Gp-Engine Oil
4N***88Cooler Group-Engine Oil; Engine Oil Cooler Group1
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8n0744 Cooler Gp-Hydraulic Oil
7c6460 Cooler Gp-Transmission Oil
1n3599 Cover Gp-Radiator Cap Protection
1N***99Cover Group-Protection; Radiator Cap Protection Cover Group1
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7w8809 Fan Gp-Blower
9y5337 Fan Gp-Blower
7w8811 Fan Gp-Reversible
9y5342 Fan Gp-Reversible
7n0037 Heater Gp-Jacket Water
7N***37Heater Group-Jacket Water; -Cold Weather1
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6n1359 Lines Gp-Water-Part 1 Of 2
4w7540 Lines Gp-Water
6n1359 Lines Gp-Water-Part 2 Of 2
7w3384 Lines Gp-Water
4n7657 Pump Gp-Water*R
4N***57Pump Group-Water; Pump Gp-Water (4n***37 N/S)1
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4n7657 Pump Gp-Water *R
4N***57Pump Group-Water; Pump Gp-Water (4n***37 N/S)1
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7w2870 Radiator Gp-Folded Core
7w2871 Radiator Gp-Part 1 Of 2
7w2871 Radiator Gp-Part 2 Of 2
7w6007 Radiator Gp-Folded Core
Engine Arrangement
7w2873 Engine Ar-Part 1 Of 2
1W***08Housing Group-Flywheel; Flywheel Housing Group1
1W***50Lines Group-Drain1
2N***20Breather Group; Breather Gp-Crankcase2
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7w2873 Engine Ar-Part 2 Of 2*X
1N***47Switch Group-Flow1
2W***54Piston & Rod Group; Connecting Rod & Piston Group12
4N***37Pump Group-Water; Pump Group-Water1
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Fuel System And Governor
6y6204 Adapter Gp-Fast Fill
6y6204 Adapter Gp-Fast Fill Fuel
7t7718 Adapter Gp-Fast Fill Fuel
6y0012 Adapter Gp-Fast Fill Fuel
6y6206 Adapter Gp-Fast Fill
6y6206 Adapter Gp-Fast Fill Fuel
2w3157 Control Gp-Fuel Ratio*R
6n6209 Control Gp-Fuel Ratio
8n5021 Control Gp-Fuel Ratio
8N***21Control Group-Fuel Ratio; Fuel Ratio Control Group1
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9n1822 Control Gp-Governor
7t6928 Control Gp-Governor-Part 2 Of 2
7t6928 Control Gp-Governor-Part 1 Of 2
9n3724 Control Gp-Torque
9d0630 Cover Gp-Dust
6n3195 Drive Gp-Governor & Fuel Pump
6N***95Drive Group-Governor & Fuel Pump; Governor & Fuel Injection Pump Drive Group1
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2w2094 Drive Gp-Tachometer
2W***94Drive Group-Tachometer; Tachometer Drive Group1
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9y3764 Fastener Gp
7t7612 Filter Gp-Fuel Lines-Part 2 Of 2
7t7612 Filter Gp-Fuel Lines-Part 1 Of 2
8n0487 Filter Gp-Fuel
4w8751 Governor Gp-Part 2 Of 2
4w8751 Governor Gp-Part 1 Of 2
7n6124 Housing As-Pump
1w1850 Lines Gp-Drain
7w9550 Lines Gp-Fuel Filter
7e3539 Lines Gp-Fuel Injection
7c6299 Lines Gp-Fuel Injection
6i0361 Lines Gp-Fuel Injection
1247077 Lines Gp-Fuel Injection
7e0535 Lines Gp-Fuel Injection
4w9008 Lines Gp-Fuel Injection
1247092 Lines Gp-Fuel Injection
7c6300 Lines Gp-Fuel Injection
6n1947 Piston Gp-Governor Servo
4w7374 Plate Gp-Governor Adapter
7w0561 Pump Gp-Fuel Injection
4w6068 Pump Gp-Fuel Injection-Part 2 Of 2
4w6068 Pump Gp-Fuel Injection-Part 1 Of 2
7n4416 Pump Gp-Fuel Priming
4w5479 Pump Gp-Fuel Transfer
8n1630 Pump Gp-Fuel Transfer
4w8752 Pump Gp-Governor, Fuel Injection, Fuel Transfer
4w8752 Pump Gp-Governor, Fuel Injection & Fuel Transfer
7t7611 Tank Gp-Fuel
7n7975 Torque Control Gp
2g9000 Adapter Gp-Fast Fill
Hydraulic System
9g9288 Cover Gp-Protection
9G***88Protection Cover Group; -Hydraulic Tank-Steering Tank Fill Cap-Hydraulic Tank Fill Cap1
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6e6548 Adapter
4t0417 Cartridge Gp*R
9t5336 Cartridge Gp-Front*R
7t6012 Control Ar-Hydraulic
3T***94Linkage Group-Implement; Implement Linkage Group-Ripper1
7T***12Control Ar-Hydraulic1
9T***18Valve Group-Control1
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7t4413 Control Ar-Hydraulic
6y4179 Control Ar-Hydraulic
3T***94Linkage Group-Implement; Implement Linkage Group-Ripper1
6Y***39Lines Group-Ripper1
6Y***79Control Ar-Hydraulic1
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9w5028 Control Ar-Hydraulic
9w5032 Control Ar-Hydraulic-Dual Tilt
4T***19Valve Group-Control; -Dual1
7T***24Wiring Group1
7T***31Linkage Group-Implement1
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7t3829 Valve & Cylinder Gp (Chgs 00-04)
4t8285 Cylinder Ar-Tilt
11***24Link Group-Stabilizer1
11***28Lines Group-Tilt Cylinder1
4T***85Cylinder Ar-Tilt1
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9t7341 Cylinder Gp-Dozer Tilt-Lh (Chg 00)
9t4280 Cylinder Gp-Dozer Tilt-Rh (Chg 00)
9t2869 Cylinder Gp-Bulldozer Lift (Chgs 00-06)
9t9203 Cylinder Gp-Bulldozer Tilt-Rh (Chgs 4-5)
9t9203 Cylinder Gp-Bulldozer Tilt-Rh (Chgs 2-3)
9t9204 Cylinder Gp-Bulldozer Tilt-Lh (Chgs 7-9)
9T***04Cylinder Group-Bulldozer Tilt; (Bulldozer)(Lh)1
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9t9204 Cylinder Gp-Bulldozer Tilt-Lh (Chgs 2-3)
9T***04Cylinder Group-Bulldozer Tilt; (Bulldozer)(Lh)1
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9t9203 Cylinder Gp-Bulldozer Tilt-Rh (Chgs 0-1)
9t9204 Cylinder Gp-Bulldozer Tilt-Lh (Chgs 0-1)
9T***04Cylinder Group-Bulldozer Tilt; (Bulldozer)(Lh)1
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9t9204 Cylinder Gp-Bulldozer Tilt-Lh (Chgs 4-5)
9T***04Cylinder Group-Bulldozer Tilt; (Bulldozer)(Lh)1
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9t9203 Cylinder Gp-Bulldozer Tilt-Rh (Chgs 7-9)
4t5111 Cylinder Gp-Lift-Lh (Chgs 01-03)
4T***11Cylinder Group-Lift-Lh; (Lh)(Lh)1
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4t5112 Cylinder Gp-Lift-Rh (Chgs 01-04)
4T***12Cylinder Group-Lift-Rh; (Rh)(Rh)1
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4t5112 Cylinder Gp-Lift-Rh (Chgs 05-06)
4T***12Cylinder Group-Lift-Rh; (Rh)(Rh)1
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6e3113 Cylinder Gp (Chg 00-01)
6E***13Cylinder Group-Ripper Pin Puller1
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9t2066 Cylinder Gp-Ripper Pin Puller (Chg 00)
9T***66Cylinder Group-Ripper Pin Puller1
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4t9977 Cylinder Gp-Ripper Tilt (Chgs 01-04)
4T***77Cylinder Group-Ripper Tilt; -Tilt1
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4t9977 Cylinder Gp
4T***77Cylinder Group-Ripper Tilt; -Tilt1
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3g3900 Housing Gp-Output
9w6325 Lines Gp-Lift Cylinder
9w5229 Lines Gp-Lift Cylinder
4t8231 Lines Gp-Pin Puller Cylinder
4T***31Lines Group-Pin Puller Cylinder1
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4t8231 Lines Gp-Cylinder
4T***31Lines Group-Pin Puller Cylinder1
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6y8144 Lines Gp-Pump-Part 1 Of 2
9w4313 Lines Gp-Pump-Part 2 Of 2
9w4313 Lines Gp Pump-Part 2 Of 2
6y8144 Lines Gp-Pump-Part 2 Of 2
9w4313 Lines Gp Pump-Part 1 Of 2
9w4313 Lines Gp-Pump-Part 1 Of 2
9w1382 Lines Gp-Adjustable Ripper-Part 1 Of 2
6y3939 Lines Gp-Ripper-Part 2 Of 2
6y5904 Lines Gp-Ripper
6y3939 Lines Gp-Ripper-Part 1 Of 2
4t8234 Lines Gp-Ripper
9w1382 Lines Gp-Adjustable Ripper-Part 2 Of 2
9w5033 Lines Gp-Tilt Cylinder
9w3244 Lines Gp-Tilt Cylinder
1104728 Lines Gp-Tilt Cylinder
9w4958 Lines Gp-Tilt Cylinder
9w3245 Lines Gp-Dual Tilt Cylinder-Part 1 Of 2
9w3245 Lines Gp-Dual Tilt Cylinder-Part 2 Of 2
9w3245 Lines Gp-Dual Tilt Clyinder-Part 2 Of 2
9w3245 Lines Gp-Dual Tilt Clyinder-Part 1 Of 2
1104724 Link Gp-Stabilizer
9w5145 Link Gp-Stabilizer
9j6006 Mounting Gp-Cylinder
4t8229 Puller Ar-Pin
4T***29Puller Ar-Pin1
4T***31Lines Group-Pin Puller Cylinder1
6E***13Cylinder Group-Ripper Pin Puller1
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7t8772 Puller Gp-Pin
6y9596 Pump & Lines Ar
1T***50Pin 7.93 mm(.312 In.) O.D.2
6Y***44Lines Group-Pump1
6Y***96Pump & Lines Ar1
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9t9840 Pump Gp-Gear
9t1080 Pump Gp-Vane
9t7574 Tank & Filter Gp
4t6006 Tank & Filter Gp-Part 1 Of 2
4t6006 Tank & Filter Gp-Part 2 Of 2
9j0673 Cylinder Gp-Tilt(Chg. 03)
6t4531 Valve & Mounting Gp
6T***31Valve & Mounting Group; -Ripper Pin Puller1
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9t4417 Valve Gp
9t5782 Valve Gp
9t1184 Valve Gp
4t6920 Valve Gp
9t7884 Valve Gp-Bank
4t6117 Valve Gp-Bypass
4T***17Valve Group-Bypass; -Torque Converter Cooler-Transmission Oil Cooler1
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4t2698 Valve Gp-Check
9t8213 Valve Gp-Control-Type 1
9t1182 Valve Gp-Control-Part 1 Of 3
4t6919 Valve Gp-Control
9t5769 Valve Gp
9T***69Valve Group-Control; -Blade Raise, Lower, Tilt1
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9t1182 Valve Gp-Control-Part 3 Of 3
9t8213 Valve Gp-Control-Type 2
9t4418 Valve Gp-Control
9t1182 Valve Gp-Control-Part 2 Of 3
3g8695 Valve Gp-Bank
9t7883 Valve Gp-Pilot
3g3159 Valve Gp-Bank
3G***59Valve Group-Pilot; Pilot Valve Group-Bulldozer Tilt,1
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3g8693 Valve Gp-Pilot
9t4318 Valve Gp
4t4205 Valve Gp-Quick Drop
4T***05Valve Group-Quick-Drop; -Bulldozer1
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3g9895 Valve Gp-Relief
4t4073 Valve Gp
4T***73Valve Group-Shuttle; -Dead Engine, Lift Arm Lower1
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6t8208 Valve Gp-Solenoid
Implements
7g4786 Screen Gp-Magnetic
7t8712 Bit & Cutting Edge Gp
7T***12Bit & Cutting Edge Group; -Semi-Universal1
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9w5652 Cutting Edge & Bit Gp
9W***52Bit & Cutting Edge Group; -Semi-Universal Blade1
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9u8232 Blade & Edge Gp-Universal
7T***59Blade As-Universal1
7T***13Edge Group-Bit & Cutting; -Universal Blade-Landfill1
9U***32Blade & Edge Group1
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9u8214 Blade & Edge Gp-Universal
8E***20Blade As-Universal1
9U***14Blade & Edge Group1
9W***45Blade As-Universal1
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9u8237 Blade & Edge Gp-Universal
7T***13Edge Group-Bit & Cutting; -Universal Blade-Landfill1
8E***15Blade As-Universal1
9U***37Blade & Edge Group1
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9u8216 Blade & Edge Gp
8E***10Blade As-Semi-Universal1
9U***16Blade & Edge Group1
9W***46Blade As-Semi-Universal1
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9u8215 Blade & Edge Gp-Semi Universal
4T***88Blade As1
7T***12Bit & Cutting Edge Group; -Semi-Universal1
9U***15Blade & Edge Group1
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4t8288 Blade As
9w2246 Blade As-Semi-Universal
8e9010 Blade As-Semi-Universal
9w2245 Blade As-Universal
8e9020 Blade As-Universal
8E***80Blade As-Universal1
8E***20Blade As-Universal1
8E***50Guard Group-Rock1
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8e9015 Blade As-Universal
8E***80Blade As-Universal1
8E***15Blade As-Universal1
8E***50Guard Group-Rock1
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9w2244 Blade As-Universal
8e7480 Blade As-Universal
7t6359 Blade As-Universal
8e2173 Blade Gp-Semi-U
8E***73Blade Group-Semi-Universal; -Abrasion1
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4t8183 Blade Gp-Straight
8e2173 Blade Gp-Semi-Universal
8E***73Blade Group-Semi-Universal; -Abrasion1
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4t8183 Blade Gp-Semi-Universal
4t8183 Blade Gp-Semi-U
4t8184 Blade Gp-Universal
8e2171 Blade Gp-Universal
9w1049 Block Gp-Push
7t9328 Block Gp-Push
7t7577 Brace Gp-Bulldozer
8e4793 Bulldozer Ar-Semi-Universal
4B***58Screw (Identification Plate) Mounting2
4T***86Push Arm Group1
8E***73Blade Group-Semi-Universal; -Abrasion1
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9w2927 Bulldozer Ar-Straight
4B***58Screw-Machine2
4T***83Blade Group-Semi-Universal1
4T***86Push Arm Group1
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4t8176 Bulldozer Ar-Straight
4B***58Screw (Identification Plate) Mounting2
4T***76Bulldozer Ar-Straight1
4T***83Blade Group-Semi-Universal1
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8e4792 Bulldozer Ar-Universal
4B***58Screw (Identification Plate) Mounting2
4T***86Push Arm Group1
8E***71Blade Group-Universal1
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8e2174 Bulldozer Ar-Semi-Universal
4B***58Screw (Identification Plate) Mounting2
4T***86Push Arm Group1
7T***29Cylinder & Valve Group-Lift2
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9w2926 Bulldozer Ar-Universal
4B***58Screw (Identification Plate) Mounting2
4T***84Blade Group-Universal1
4T***86Push Arm Group1
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8e2172 Bulldozer Ar-Universal
4B***58Screw (Identification Plate) Mounting2
4T***86Push Arm Group1
7T***29Cylinder & Valve Group-Lift2
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4t8178 Bulldozer Ar-Universal
4B***58Screw (Identification Plate) Mounting2
4T***78Bulldozer Ar-Universal1
4T***84Blade Group-Universal1
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3t5036 Filter & Bypass Gp
7g1180 Cover & Case Gp-Part 2 Of 2
7g1180 Cover & Case Gp-Part 1 Of 2
6y0259 Gear & Clutch Gp-Part 3 Of 6
6y0259 Gear & Clutch Gp-Part 6 Of 6
6y0259 Gear & Clutch Gp-Part 5 Of 6
6y0259 Gear & Clutch Gp-Part 4 Of 6
6y0259 Gear & Clutch Gp-Part 2 Of 6
6y0276 Gear & Clutch Gp-Part 3 Of 3
6Y***76Clutch & Gear Group; Gear & Clutch Gp1
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6y0276 Gear & Clutch Gp-Part 2 Of 3
6Y***76Clutch & Gear Group; Gear & Clutch Gp1
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6y0259 Gear & Clutch Gp-Part 1 Of 6
6y0276 Gear & Clutch Gp-Part 1 Of 3
6Y***76Clutch & Gear Group; Gear & Clutch Gp1
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7g1175 Gear & Clutch Gp-Part 6 Of 6
7g1175 Gear & Clutch Gp-Part 5 Of 6
7g1175 Gear & Clutch Gp-Part 2 Of 6
7g1175 Gear & Clutch Gp-Part 4 Of 6
7g1175 Gear & Clutch Gp-Part 1 Of 6
7g1175 Gear & Clutch Gp-Part 3 Of 6
6t7181 Control Gp-Towing Winch-Part 2 Of 2
6t7181 Control Gp-Towing Winch-Part 1 Of 2
3t4993 Control Gp-Winch
3T***93Control Group-Winch; Winch Control Group1
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7g5666 Conversion Gp-Winch
1P***79Input Gear-Upper (45 Teeth)1
7G***66Conversion Group-Winch; Winch Conversion Group1
8P***83Input Gear-Lower (77 Teeth)1
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7g1181 Covers Gp-Shipping
6y0317 Covers Gp-Shipping
6Y***17Cover Group-Shipping; Covers Gp-Shipping1
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7t6040 Cover Gp-Trunnion
9t4279 Cylinder Gp (Chg 00)
9t9202 Cylinder Gp-Dozer Tilt (Chgs 00-01)
6y0260 Drive Gp-Winch
9w5653 Bit & Cutting Edge Gp
9W***53Edge Group-Bit & Cutting; -Universal Blade-Abrasion1
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7t8713 Bit & Cutting Edge Gp
7T***13Edge Group-Bit & Cutting; -Universal Blade-Landfill1
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9p7728 Winch Fairlead Gp
4t8219 Frame Gp-Ripper
4t8225 Frame Gp-Ripper
8n7507 Gear Gp-Accessory
8N***07Gear Group-Accessory; Accessory Gear Group1
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8e9950 Guard Gp-Rock
4t8290 Guard Gp-Rock
4t8286 Guard Gp-Rock
8e9570 Guard Gp-Rock
8E***70Guard Group-Rock; -Semi-Universal Blade1
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8p2398 Guide Gp-Roller
8p2397 Guide Gp-Roller
7t3910 Installation Ar-Winch
1J***59Seal (104.14 mm)Id1
4F***53Seal-O-Ring (46.99mm Id)1
6T***81Control Group-Winch1
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9n4133 Kit-Winch Conversion
6y8656 Kit-Winch Conversion
6y8657 Kit-Winch Conversion
9n4134 Kit-Winch Conversion
7g1265 Lines Gp-Winch
7G***65Lines Group-Winch; Winch Lines Group1
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6t8522 Lines Gp-Winch
9j6061 Link Gp-Stabilizer
7t7931 Linkage Gp-Implement
3t2594 Linkage Gp-Implement
3T***94Linkage Group-Implement; Implement Linkage Group-Ripper1
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6t7165 Linkage Gp-Implement-Part 2 Of 2
6t7165 Linkage Gp-Implement-Part 1 Of 2
4t8220 Mounting Gp-Ripper
6t8413 Mounting Gp-Winch
9w2251 Plate Gp-Wear
9w2250 Plate Gp-Wear
7g6787 Pump Gp-Gear
7g6788 Pump Gp-Gear
7G***88Pump Group-Gear; Gear Pump Group1
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4t8186 Push Arm Gp-Stabilizer
4t8182 Push Arm Gp-Lh
4t8181 Push Arm Gp-Rh
4t8224 Ripper Ar-Single Shank
3T***18Lighting Group1
4B***58Screw (Identification Plate) Mounting2
4T***11Cylinder Group-Lift-Lh; (Lh)(Lh)1
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6y5899 Ripper Ar-Single Shank
4B***58Screw (Identification Plate) Mounting2
4T***11Cylinder Group-Lift-Lh; (Lh)(Lh)1
4T***12Cylinder Group-Lift-Rh; (Rh)(Rh)1
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4t8214 Ripper Ar-Multi-Shank
3T***18Lighting Group1
4B***58Screw (Identification Plate) Mounting2
4T***11Cylinder Group-Lift-Lh; (Lh)(Lh)1
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6y5898 Ripper Ar-Multi-Shank
4B***58Screw (Identification Plate) Mounting2
4T***11Cylinder Group-Lift-Lh; (Lh)(Lh)1
4T***12Cylinder Group-Lift-Rh; (Rh)(Rh)1
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4t8227 Ripper Gp
4t8223 Ripper Gp
8e8416 Shank As-Ripper
8e8414 Shank As-Ripper
9x7095 Switch & Handle Gp
7t0362 Switch & Handle Gp
3e8680 Switch As-Handle
3E***80Switch Group-Handle; -Dual Tilt Control, Tip Control1
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9j5955 Tooth Gp-Ripper
6y6146 Tooth Gp-Ripper
6y6140 Tooth Gp-Ripper
6Y***40Tooth Group-Ripper; -Multishank1
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3g8567 Tooth Gp-Ripper
9w7606 Tooth Gp-Ripper
3g2089 Tooth Gp-Ripper
9j6073 Trunnion Gp-Bulldozer
3t8650 Valve Gp
3g5091 Valve Gp-Pilot
3t8649 Valve Gp-Pressure Control
3p4121 Valve Gp-Selector
6t0070 Winch Ar-Towing
6T***70Winch Ar-Towing1
6T***18Winch Ar-Towing1
7G***66Conversion Group-Winch; Winch Conversion Group1
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6y0255 Winch Ar-Towing
6Y***55Winch Ar-Towing1
6Y***60Drive Group-Winch1
6Y***65Winch Group-Towing1
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6t8918 Winch Ar-Towing
2Y***84Plate-Serial Number; (Lh Side-Forward Edge)1
3T***93Control Group-Winch; Winch Control Group1
4B***58Screw (Identification Plate) Mounting4
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6y0256 Winch Ar-Towing
6Y***56Winch Ar-Towing1
6Y***60Drive Group-Winch1
6Y***75Winch Group-Towing1
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6y0275 Winch Gp-Towing
2Y***84Plate-Serial Number; (Lh Side-Forward Edge)1
3T***93Control Group-Winch; Winch Control Group1
4B***58Screw (Identification Plate) Mounting4
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6y0265 Winch Gp-Towing
2Y***84Plate-Serial Number; (Lh Side-Forward Edge)1
3T***93Control Group-Winch; Winch Control Group1
4B***58Screw (Identification Plate) Mounting4
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Lubrication System
2n8220 Breather Gp
2N***20Breather Group; Breather Gp-Crankcase1
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2n8220 Breather Gp-Crankcase
2N***20Breather Group; Breather Gp-Crankcase1
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4n2481 Fastener Gp-Oil Pump Mounting
4N***81Fastener Group-Oil Pump Mounting; Oil Pump Mounting Fastener Group1
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7c9789 Filler Gp-Engine Oil
2w6537 Filler Gp-Engine Oil
4w8724 Filter Gp-Oil
7c9277 Fumes Disposal Gp
7c5018 Gauge Gp-Oil Level (Dipstick)
9y5335 Gauge Gp-Oil Level (Dipstick)
9Y***35Gauge Group-Oil Level (Dipstick)1
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7c4485 Lines Gp-Engine Oil-Part 1 Of 2
7c4485 Lines Gp-Engine Oil-Part 2 Of 2
7g7404 Oil Change Gp-High Speed
9w5030 Protection Ar-Vandalism
1N***99Cover Group-Protection; Radiator Cap Protection Cover Group1
1W***68Protection Group-Vandalism; Vandalism Protection Gp-Oil Level Gauge.1
5P***00Key Total 2 Pieces Per Unit; (Literature Compartment)2
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7n9187 Protection Gp-Vandalism
1w4368 Protection Gp-Vandalism-Oil Level Gauge
1W***68Protection Group-Vandalism; Vandalism Protection Gp-Oil Level Gauge.1
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7c1772 Pump Gp-Engine Oil Gear*R
Power Train-Power Transmission Unit
8n0198 Yoke Gp-Pump Drive
9w1367 Axle Gp-Power Train
9w4100 Case & Parts Gp
9w4646 Control Gp-Transmission-Part 1 Of 3
9w4646 Control Gp-Transmission-Part 2 Of 3
9w4646 Control Gp-Transmission-Part 3 Of 3
9w7132 Control Gp-Transmission Hydraulic
9W***32Control Group-Transmission Hydraulic1
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7g7006 Coupling Gp-Pump
9u9286 Filter Gp-Transmission
7g3137 Filter Gp-Transmission
1460242 Final Drive Gp-Duo-Cone Guard
6y0318 Final Drive Gp-2 Required*R
6t5900 Final Drive Gp-2 Required
6y8824 Bevel & Transfer Gear Gp-Part 1 Of 2
6y8824 Bevel & Transfer Gear Gp-Part 2 Of 2
7t5801 Bevel & Gear Gp-Part 2 Of 2
7t5801 Bevel & Gear Gp-Part 1 Of 2
6t7187 Guard Gp-Drive Shaft
9w5029 Guard Gp-Power Train
9x6539 Kit-Bearing-Transmission
10***97Cone-Roller Bearing1
2D***58Bearing-Ball1
2P***73Cup To Housing Assembly & Front Cover2
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7x7476 Kit-Final Drive Bearing
1B***78Cup,Tapered Roller (Timken 3720) Uoc:Bsu,Bsw8
1B***80Cone-Roller Bearing8
1L***03Cone-Roller Bearing8
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9w4928 Lines Gp-Power Train Oil-Part 2 Of 3
9w4928 Lines Gp-Power Train Oil-Part 1 Of 3
9w4928 Lines Gp-Power Train Oil-Part 3 Of 3
9w7342 Mounting Gp-Transmission
7t5800 Planetary Gp-Part 2 Of 2
7t5800 Planetary Gp-Part 1 Of 2
9g3055 Pump Gp-Gear
3t0301 Pump Gp-Gear
7g2262 Pump Gp-Gear
3t0300 Pump Gp-Gear
6t9651 Pump Gp-Gear
6t9538 Segment Gp-Sprocket
9p3785 Shaft Gp-Main Drive
9p7116 Torque Converter Gp
9p7115 Torque Converter Gp
9p7117 Torque Converter Gp*R
7t5802 Transmission Ar*R
3E***90Torque Converter-Trans. S/N 1ze767-Up0
6Y***24Gear Group-Bevel & Transfer1
7T***00Planetary Group1
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7g3263 Joint Gp-Universal
9w7130 Valve Gp-Selector & Pressure Control
9w7131 Valve Gp
6t2313 Valve Gp-Priority
6T***13Valve Group-Priority; -Transmission Control1
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6t4938 Valve Gp-Relief
Service Equipment And Supplies
8f9866 Grease Gun As
Name Plates & Films-Part 1 Of 2
3E***86Plate-Eec Certification (Rops)1
3E***87Plate-Eec Certification (Fops)1
3N***90Plate Serial Number; On R.H. Rear Bank Of Cylinder Block As Viewed From Rear Of Engine1
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Name Plates & Films-Part 2 Of 2 Entire Group : Number 8t-1495
1P***07Film-Symbol; 2 On Bottom Of Upper Frame Below Engine. 2 On Front Of Upper Frame Above Boom Articulation4
2P***31Film--Cat On Each Side Of Radiator Guard; Film--Cat On Each Side--Above Drum Shaft2
5P***61Film (Mounted On R.H. Operator''S Platform)1
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9s7977 Hand Tool Gp
Starting And Electrical System
8c5511 Lamp Gp-Rh
9w1282 Lamp Gp-Head
3t9343 Switch Gp
3T***43Switch Group-Filter Bypass; -Power Train Oil Filter1
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9g9813 Alarm Gp-Fault
9G***13Alarm Group; -Action-Action, Engine Overspeed1
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7c8888 Alternator Gp-Charging
3e7577 Alternator Gp-Charging
3t1888 Alternator Gp-Charging
3T***88Alternator Group-Charging; Alternator Group Delco-Remy 24 Volt, 50 Ampere1
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6t7223 Alternator Gp-Charging
6T***23Alternator Group-Charging; Alternator Group-Nippondenso -- 24 Volt, 50 Ampere1
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9w6139 Alternator Gp-Charging
4N***25Pulley-Alternator; (1-Groove)1
5S***88Alternator Group-Charging1
9W***39Alternator Group-Charging1
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8n0999 Alternator Gp-Charging*R
5s9088 Alternator Gp-Charging*R
3T***88Alternator Group-Charging; Alternator Group Delco-Remy 24 Volt, 50 Ampere1
5S***88Alternator Group-Charging1
6T***23Alternator Group-Charging; Alternator Group-Nippondenso -- 24 Volt, 50 Ampere1
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9g9538 Alternator Gp-Charging
7t7625 Battery & Wiring Gp-Part 7 Of 8
7t7625 Battery & Wiring Gp-Part 2 Of 8
7t7625 Battery & Wiring Gp-Part 8 Of 8
7t7625 Battery & Wiring Gp-Part 6 Of 8
7t7625 Battery & Wiring Gp-Part 1 Of 8
7t7625 Battery & Wiring Gp-Part 5 Of 8
7t7625 Battery & Wiring Gp-Part 3 Of 8
7t7625 Battery & Wiring Gp-Part 4 Of 8
9w0742 Junction Block Gp
9w1279 Lamp Gp-Flood
6n7989 Lamp Gp-Flood
6N***89Lamp Group-Flood; -Ladder Access1
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8c5582 Lamp Gp-Flood
3t0718 Lighting Gp-Ripper-1 Lamp
6y4732 Lighting Gp-Ripper-1 Lamp
3t3290 Lighting Gp
3t8635 Solenoid As-Starting Motor
7t8854 Solenoid As-Starting Motor
7t3148 Starting Aid Gp-Ether
8e5662 Starting Aid Gp-Ether
7t9980 Starting Ar-Low Temperature-Part 3 Of 3
7t9980 Starting Ar-Low Temperature-Part 1 Of 3
7t9980 Starting Ar-Low Temperature-Part 2 Of 3
3t8952 Starting Motor Gp-Electric-Part 2 Of 3
3t8952 Starting Motor Gp-Electric-Part 1 Of 3
7n7049 Starting Motor Gp-Electric
6t0643 Starting Motor Gp-Electric*R
6T***43Starting Motor Group-Electric1
6T***46Starting Motor Group-Electric; Electric Starting Motor Group1
7T***62Starting Motor Group-Electric; Electric Starting Motor Group1
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6t0646 Starting Motor Gp-Electric-Part 1 Of 2
6T***46Starting Motor Group-Electric; Electric Starting Motor Group1
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3t8952 Starting Motor Gp-Electric-Part 3 Of 3
8n8753 Starting Motor Gp-Electric
8N***53Starting Motor Group-Electric; -Cold Weather1
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7t9162 Starting Motor Gp-Electric-Part 1 Of 3
7T***62Starting Motor Group-Electric; Electric Starting Motor Group1
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7t9162 Starting Motor Gp-Electric-Part 3 Of 3
7T***62Starting Motor Group-Electric; Electric Starting Motor Group1
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7t9162 Starting Motor Gp-Electric-Part 2 Of 3
7T***62Starting Motor Group-Electric; Electric Starting Motor Group1
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6t0646 Starting Motor Gp-Electric-Part 2 Of 2
6T***46Starting Motor Group-Electric; Electric Starting Motor Group1
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7n8000 Switch As-Toggle
7N***00Switch As-Toggle; (Warning Light)1
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7n0719 Switch As-Disconnect
7N***19Switch Group-Disconnect; -Battery1
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1n4647 Switch Gp-Flow
9x3040 Switch Gp-Flow
9g7641 Switch Gp-Start
9G***41Switch Group-Start; -Engine, Key-Vims Service1
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7t7724 Wiring Gp
Steering Clutches And Brakes
8e7412 Clutch & Brake Gp-Steering-2 Required
6y2868 Clutch & Brake Gp-Steering-2 Required
9u9082 Clutch & Brake Gp-Steering-2 Required*R
9U***82Clutch & Brake Group-Steering; -2 Required1
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9w7465 Clutch & Brake Gp-Steering*X-2 Required
9W***65Clutch Group-Steering; -2 Required1
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9w5263 Control Gp-Steering Clutch & Brake-Part 4 Of 4
9W***63Control Group-Steer Clutch & Brk1
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9w5263 Control Gp-Steering Clutch & Brake-Part 1 Of 4
9W***63Control Group-Steer Clutch & Brk1
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9w5263 Control Gp-Steering Clutch & Brake-Part 3 Of 4
9W***63Control Group-Steer Clutch & Brk1
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9w5263 Control Gp-Steering Clutch & Brake-Part 2 Of 4
9W***63Control Group-Steer Clutch & Brk1
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6t1171 Valve Gp-Control-Part 3 Of 3
6t1171 Valve Gp-Steering Control-Part 3 Of 3
9w9965 Valve Gp-Steering Control-Part 2 Of 3
6t1171 Valve Gp-Control-Part 1 Of 3
9w9965 Valve Gp-Steering Control-Part 1 Of 3
6t1171 Valve Gp-Steering Control-Part 2 Of 3
6t1171 Valve Gp-Control-Part 2 Of 3
6t1171 Valve Gp-Steering Control-Part 1 Of 3
9w9965 Valve Gp-Steering Control-Part 3 Of 3

59N serial number reference

On large Cat track-type tractors including the D9N, the PIN/serial plate sits at the rear of the machine, on the left side, mounted high on the end of the left frame rail; it can be hard to spot if a ripper attachment is fitted. Read the first three characters as the plant/production-block prefix (here 1JD) and the following five digits as the sequential unit number within that block; Caterpillar's own catalog also cross-references the whole run under the internal basic model code 59N.

PrefixIdentifies
1JDD9N Track-Type Tractor (Cat basic/sales model 59N)

Frequently asked questions

What engine powers the Caterpillar 59N (D9N)?

A Caterpillar 3408 DITA: an 18.0-liter (1,099 cu in) V8 diesel with direct injection, turbocharging, and aftercooling, governed mechanically rather than electronically. Net flywheel power is rated at roughly 370 hp (280 kW), with gross power near 401 hp (299 kW).

What is the operating weight of the D9N?

Operating weight runs roughly 42-48 tonnes (about 93,000-107,000 lb) depending on blade type and whether a ripper is fitted. Dozer-only configurations sit toward the lower end; adding a rear ripper and full ballast pushes toward the upper end. Exact figure varies by configuration and series build.

What replaced the Caterpillar D9N?

The D9R replaced the D9N in 1996, moving to higher engine output and, in later builds, electronic HEUI fuel systems. The D9N itself had replaced the D8L in 1987 when Cat adjusted its size-class numbering across the D8/D9 range.

What 59N owners discuss

What's the most common engine complaint from D9N owners running the 3408?
Coolant loss ranks at the top. Usual suspects: a cracked aftercooler core, a failed head gasket, leaking liner seals, a worn water pump seal combined with a blocked tell-tale hole, or a cracked cylinder head. Total cooling system capacity runs around 81 L (21 US gal), so a slow leak can go unnoticed for a while before the sight glass shows it. Pressure-test the system and pull the aftercooler before assuming a head gasket is at fault. If coolant keeps seeping from a reinstalled head, check for a warped block or excess liner protrusion holding the head off its seat.
Owners mention low power or rough running on the 3408 - what's usually behind it?
Low boost from turbo wear, a leaking intake pipe, or a plugged air filter is the first check. Because the exhaust manifolds sit under shields on this engine, a leak there is easy to miss visually - watch for black smoke around the manifold area instead, since that points to lost exhaust pressure ahead of the turbo. On the fuel side, clogged filters and a system that won't hold prime cause hard-start and stumbling complaints. After changing filters and priming, check the lift pump, solenoids, and fuel line fittings for air intrusion, then confirm pressure at the injection pump inlet with a gauge instead of guessing. Have your dealer verify turbocharger wear with a proper boost and leak-down check before condemning it.
Is there anything mechanics warn about when overhauling the 3408 in a D9N?
The crankshaft draws the most caution. It's a 65-degree V8 design with offset pins, and the fillet radius at the pin is unforgiving - get it wrong on a regrind and the crank snaps. This is an overhaul-bay warning more than a running complaint: use a shop with specific experience on this crank rather than a generalist automotive grinder. Have your dealer verify any regrind or crank work meets factory tolerance before the engine goes back together.
How does the D9N's steering and transmission behave in the field?
This generation uses a planetary power shift transmission with clutch-and-brake steering rather than the differential or hydrostatic steering of later D9 models. Expect a mechanical feel: distinct steering clutch and brake pedal action rather than a smooth wheel-style steer. Owners treat rough or grabby steering clutch engagement as a maintenance item - worn discs or low system pressure - not a design flaw. Keep an eye on transmission and steering clutch oil condition, since heat and contamination shorten disc life faster than hours alone do.
What wear pattern shows up in the undercarriage and final drives?
The D9N carries Cat's elevated sprocket layout, which keeps the final drives up away from ground shock and abrasive debris, extending their life versus older low-drive designs. On these elevated-sprocket machines the rollers run single-flange. The item to watch is sprocket tooth wear: teeth should stay tall and flat, not go sharp or dished. A worn sprocket loses diameter and falls out of pitch with the track links, which then accelerates wear on both parts together. Keeping track tension correct and the undercarriage clean is the biggest lever an owner has over sprocket and roller life.
Does the D9N have the sensor and electronics headaches of newer machines?
No, and that's viewed as an advantage by people who run this era of iron. The D9N predates Cat's electronic engine and machine management - it's mechanical fuel injection with analog gauges and switches. There's less for a sensor or module to fail, but also no self-diagnostics, so a mechanic chases a problem with a gauge set and a multimeter rather than a code reader. The trade-off owners describe is simplicity and repairability against having to actually know the machine instead of plugging in a laptop.
What should a buyer inspect before purchasing a used D9N?
Start with the undercarriage: look for at least half the wear life remaining in the tracks, correct tension, and no cracked or bent rollers or idlers, then check the sprocket segments for dishing. Run the engine to full operating temperature and watch for smoke, boost complaints, or coolant weeping around the aftercooler and cylinder head. Check hydraulic fluid clarity and look for leaks at the cylinders and steering clutch packs. Ask for oil sample history and service records, since paperwork tells more about a machine this age than fresh paint does. Have your dealer verify undercarriage percentage life and run a compression or blow-by check before making an offer.

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

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