Caterpillar 785
Caterpillaroff-highway trucktruck

Caterpillar 785

Maintenance schedule, common problems & OEM parts breakdown

The Caterpillar 785 is a rigid-frame, rear-dump mining and quarry haul truck in the roughly 136 t (300,000 lb) payload class, sitting below Cat's largest ultra-class haulers. Caterpillar began building it in 1988 at its Decatur, Illinois plant as its first purpose-built truck at this size. It runs a Cat 3512 V12 mechanical diesel rated at approximately 1029 kW (1380 hp) gross from 51.8 L displacement, controlled by Caterpillar's PEEC electronic governor rather than a full engine ECM. Drive runs through a six-speed torque-converter powershift transmission to a rigid rear axle, riding on self-contained nitrogen-over-oil suspension struts and bias-ply 33.00-51 tires. Empty weight runs close to 96 t (212,400 lb), with a gross weight near 249 t (550,000 lb) at rated payload, and dump body capacity is about 78 m3 heaped (57 m3 struck). Caterpillar offered different dump-body and tire configurations for coal, aggregate, and hard-rock duty, and this original 785 opened a model line that continued through the 785B, 785C, and 785D generations.

Across the lineage, the biggest change was in engine fuel system and controls, not truck size or class. The original 785's 3512 runs a mechanical fuel system with only a PEEC governor for engine speed - no engine ECM, no VIMS, none of the onboard health monitoring added later. The 785B carried that mechanical 3512 forward through running production changes. The 785C then switched to an electronically controlled 3512B EUI engine and added an application-specific body program that spread payload from about 131 to 144 t depending on body choice. The 785D moved again to the 3512C HD engine with a larger X-body option, pushing rated payload higher still. In the used and parts market, the original 785's mechanical simplicity is its advantage: a PEEC-governed 3512 with a torque-converter powershift transmission is cheaper to keep running at remote sites with limited electronic diagnostic support, and its engine, driveline, and strut/axle components share heavily with siblings across Caterpillar's mining-truck line. Surviving units are older and often already rebuilt at least once, but a large population still works in secondary mining markets, which keeps used units and 3512-family parts in steady demand.

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 785 specifications

Engine

Engine modelCat 3512, V12 four-stroke diesel, mechanical fuel system with electronic (PEEC) governor
Gross power1029 kW (1380 hp)
Net powerapprox. 962 kW (1290 hp) — reported once, confirm with dealer
Displacement51.8 L (3161 cu in), 170 mm bore x 190 mm stroke
Emissions tierPre-emissions design, predates EPA nonroad Tier / EU Stage standards

Weights

Empty/chassis weightapprox. 96.4 t (212,422 lb) — reported once, confirm exact configuration with dealer
Rated payloadapprox. 136 t (300,000 lb), 150 US ton class; one listing shows a lower net figure near 118 t, treat as configuration/rating-basis variance
Ground pressureNot published by the factory — confirm with dealer for site-specific loading

Dimensions

Overall length11.02 m (36.16 ft)
Overall width6.28-6.63 m (20.6-21.8 ft), varies by source/configuration
Overall height5.64-5.77 m (18.5-18.9 ft), varies by source/configuration
Wheelbase5.18 m (17 ft)
Raised-body dump clearance heightapprox. 11.2 m (36.75 ft) with body fully raised
Turning diameterapprox. 27-29 m, varies by source
Standard tires33.00-51 50PR (E-4)

Performance

Top travel speed, loadedapprox. 56 km/h (34.8 mph)
GradeabilityNot published as a single figure — grade performance is governed by rimpull/retarder curves rather than one gradeability percentage
Dump body capacity, heaped78 m3 (102 yd3)
Dump body capacity, struck57 m3 (74.6 yd3)

Service capacities (summary)

Fuel tankapprox. 1893 L (500 gal US)
Cooling, engine oil, and hydraulic capacitiesNot documented in available factory literature for this generation — confirm with dealer

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

785 fluids & capacities

SystemCapacityRecommended fluid
Engine crankcase (with filter) - Cat 3512 V12 dieselNot separately published for the base 785. Later 3512-family trucks on this platform list about 204 L (54 US gal) for the same V12 block. Verify against this truck's OMM.Cat DEO (Diesel Engine Oil). Use SAE 10W below about -18C (0F), 15W-40 multigrade for the -15C to 40C range, and SAE 30 or 40 monograde for sustained hot climates.
Cooling systemNot separately published for the base 785. Later platform generations list roughly 379-480 L (100-126 US gal) depending on model year. Verify against this truck's OMM.Cat heavy-duty coolant/antifreeze with corrosion inhibitor; later service literature for this platform specifies Cat ELC (Extended Life Coolant). Do not mix ELC with conventional coolant types.
Fuel tank1893 L (500 US gal).No. 2-D diesel meeting Cat's fuel specification. Use a winter-blended fuel below freezing to prevent wax and gelling.
Transmission / torque converter (powertrain compartment, including sump)Not separately published for the base 785. Later platform generations list about 248 L (65.6 US gal) for the torque converter/transmission system. Verify against this truck's OMM.Cat TDTO (Transmission/Drive Train Oil), TO-4 or TO-4M spec only - Cat HYDO is not approved in this compartment. Use TDTO SAE 30 in warm climates, TDTO 10W in cold climates, or Cat TDTO-TMS multi-season blend across a wide temperature spread.
Final drives & differential (combined)Not separately published for the base 785. Later platform generations list about 435 L (115 US gal) for the combined differential/final-drive compartment. Verify against this truck's OMM.Cat TDTO (TO-4/TO-4M), same viscosity-by-climate grades as the transmission compartment.
Hydraulic system - steering tankNot separately published for the base 785. Later platform generations list about 91 L (24 US gal) tank-only, or 117 L (31 US gal) for the full steering system including lines. Verify against this truck's OMM.Cat TDTO (TO-4/TO-4M); this truck's steering circuit runs on drive-train oil, not Cat HYDO. Grade by climate matches the transmission compartment.
Hydraulic system - brake/hoist tankNot separately published for the base 785. Later platform generations list about 337 L (89 US gal) tank-only, or 640 L (169 US gal) for the full brake/hoist system including lines. Verify against this truck's OMM.Cat TDTO (TO-4/TO-4M), same fluid as the transmission and steering circuits. Cat HYDO is not approved for the brake/hoist tank on this truck.
Grease (chassis and pin lubrication points)No fill capacity - serviced per lubrication point on interval, not by reservoir volume.Cat Multipurpose Grease (lithium-complex, NLGI 2) for standard chassis and pin points. Cat Extreme Application grease for high-load, high-temperature pivot points such as suspension and body-hoist pins.

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

Caterpillar 785 maintenance schedule

Service intervalTasks
Every 10 h
  • Check engine oil, coolant, and transmission/hydraulic (TDTO) fluid level before starting the shift.
  • Walk around the truck and check for fuel, oil, and coolant leaks at the 3512 engine, torque converter, and TO-4 circuits.
  • Check tire condition and inflation on all 33.00-51 bias-ply positions.
  • Test service and parking brakes, backup alarm, and lights before moving the truck.
  • Grease articulation, steering, and hoist-cylinder pins with Cat Multipurpose or Extreme Application grease on the weekly interval.
  • Check nitrogen-over-oil strut oil level and inspect for leaks at the front and rear suspension on the weekly interval.
Every 250 h
  • Change engine oil and Cat DEO filter, or confirm an interval extension from an oil-sample result.
  • Replace primary and secondary fuel filters.
  • Pull S·O·S samples of engine oil, TDTO TO-4/TO-4M, and coolant for laboratory analysis.
  • Inspect PEEC governor linkage, fuel-rack travel, and governor wiring for wear or looseness.
  • Inspect wet-disc brake and hoist hydraulic lines for leaks and chafing.
Every 500 h
  • Change transmission and hoist-system oil filters.
  • Check final-drive and differential oil level and pull a sample.
  • Check torque-converter stall speed and shift quality under load.
  • Check turbocharger boost and inspect the aftercooler core for dust packing on the 3512.
  • Inspect dump-body pins, bushings, and hoist-cylinder mounts for play.
  • Check wheel and rim mounting torque on all positions.
Every 1,000 h
  • Change engine oil, filter, and crankcase breather element.
  • Change final-drive and differential oil completely with Cat TDTO TO-4/TO-4M.
  • Test Cat ELC coolant condition and top off extender as needed.
  • Recharge and check nitrogen-over-oil struts for correct charge pressure.
  • Inspect turbocharger and aftercooler mounting and ducting for cracks.
Every 2,000 h
  • Change transmission/torque-converter TDTO oil and service the transmission filter housing.
  • Adjust engine valve lash and check injection timing on the 3512.
  • Inspect and recalibrate the PEEC governor against factory setting.
  • Inspect the frame, hoist-cylinder trunnions, and body-pivot area for cracking.
  • Measure wet-disc brake pack wear in the TO-4 brake circuit.
  • Change hydraulic/hoist system oil if not already extended by sample results.
Every 4,000 h
  • Inspect turbochargers on the 3512 and rebuild or replace as wear dictates.
  • Inspect the torque converter and transmission clutch packs for wear and rebuild as needed.
  • Inspect steering cylinders, pins, and linkage bushings for wear.
  • Reseal and recharge nitrogen-over-oil struts as a scheduled overhaul item.
Every 12,000 h
  • Perform a top-end or inframe overhaul on the 3512 engine based on oil-consumption and blow-by trends.
  • Rebuild the torque-converter powershift transmission and inspect all clutch packs and gear sets.
  • Rebuild final-drive and differential planetaries and replace bearings.
  • Inspect the full frame, hoist-cylinder trunnions, and body-pivot structure for fatigue cracking.
  • Rebuild or replace suspension struts and inspect axle housings for wear.

Servicing the 785 beyond the schedule

Predictive Maintenance & Fluid Analysis

This truck predates onboard condition monitoring, so scheduled fluid sampling is the main predictive tool. Pull S·O·S samples from the Cat DEO engine oil, TDTO TO-4/TO-4M in the transmission-differential-final drive-brake-hoist circuit, and Cat ELC coolant at set intervals to catch bearing, clutch, and liner wear before failure. Check nitrogen charge and oil level in the front and rear struts regularly; a slow nitrogen bleed shows up as ride-height sag long before a seal fails outright. Track PEEC governor rack travel and linkage wear as an early warning of fuel-system drift.

Corrective & Common Repairs

Recurring repair points on the 785 center on the TO-4 wet-disc brake and hoist circuit, the torque-converter powershift, and the 3512's turbocharger and aftercooler core. Watch for stall-speed drift in the converter, slipping clutch packs from contaminated TDTO oil, and brake-disc wear from repeated retarding on grade. PEEC governor linkage and rack wear cause rough governing and fuel-delivery faults before any ECM-style code would exist, so mechanical inspection is the main diagnostic path. Dump-body pins, bushings, and hoist-cylinder trunnions also see steady wear and need periodic play checks.

Overhaul & Rebuild Points

Major rebuild intervals on the 785 center on the Cat 3512: top-end work on heads, liners, and injectors, plus inframe overhauls, restore power once blow-by and oil consumption climb. The torque converter and powershift clutch packs form the next wear group, along with the differential and final-drive planetaries running in TDTO TO-4/TO-4M. Nitrogen-over-oil struts need periodic reseal and recharge to hold ride height. Inspect the frame around hoist-cylinder trunnions and body-pivot pins for fatigue cracking at every major rebuild, since this chassis carries full mining duty cycles.

Seasonal & Environment Servicing

Mine sites run this truck from arctic cold to tropical heat, so seasonal fluid grade changes matter. Switch to a lighter Cat DEO viscosity and confirm Cat ELC freeze protection before cold-weather starts, since the mechanical 3512 has no electronic cold-start assist. In hot, dusty pits, shorten air-filter service intervals and check the aftercooler core for packed dust that raises intake temperature. Bias-ply 33.00-51 tires need closer pressure and heat checks in high-ambient operations, and check struts more often where haul roads see heavy washboarding or frost heave.

785 common service parts

Part numberPart
9X-1298Element As-Engine Oil HeaterCheck fitment →
9W-3795Element AsCheck fitment →
7W-0629Adapter As-FilterCheck fitment →
8C-6934Transmission FilterCheck fitment →

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

785 fault codes & troubleshooting

CodeMeaningLikely causeWhat to do
12Coolant level sensor circuit fault (signal invalid, or voltage reading high/low)Coolant actually low, or open/shorted coolant-level sensor wiring and connector corrosionCheck coolant level and top off first, then inspect sensor connector and wiring before replacing the sensor
21Sensor supply voltage fault (governor sensor reference voltage out of range)Low charging-system voltage, chafed harness, or corroded connector feeding the governor sensor groupCheck battery and charging voltage, then inspect the sensor supply wiring and connectors
22Fuel rack position sensor faultRack sensor signal below or above the valid range, or a signal that swings faster than the rack can physically move, from a wiring or sensor defectInspect the rack position sensor, its connector and wiring, and confirm the governor linkage moves freely before condemning the sensor
23Timing position sensor faultTiming sensor signal invalid due to damaged wiring, loose connector, or failed sensorInspect the timing sensor and its wiring harness for damage or looseness
24Oil pressure sensor circuit faultSensor circuit open or shorted, or a reading outside the valid range from wiring damage or a failed sensorVerify actual oil pressure with a mechanical gauge first, then inspect the sensor and its wiring
25Boost (intake manifold) pressure sensor faultSensor signal out of range from a plugged sense line, damaged wiring, or a failed sensorInspect the boost sensor and its air line for blockage or leaks before replacing the sensor
35Engine overspeed warningSustained high engine speed from a downhill overrun, retarder or transmission mis-shift, or a governor rack/linkage that is sticking or not respondingCheck retarder and service brake operation and inspect the fuel rack linkage for binding; PEEC will pull fuel and can shut the engine down until speed drops back to a safe range
43Fuel rack actuator fault (actual rack position not tracking desired rack position closely enough)Binding or worn governor linkage, a weak or failed rack actuator/solenoid, or a drifted rack feedback sensorInspect the fuel rack linkage for binding or wear, check actuator operation, and verify feedback sensor calibration
46Low engine oil pressure warningLow oil level, worn oil pump, plugged filter, or a failed oil pressure sensor giving a false warningShut the engine down and verify oil level and actual pressure with a mechanical gauge before restarting
48Excessive boost pressure warningTurbocharger wastegate or aneroid control malfunction, or a miscalibrated boost sensorInspect the turbocharger, wastegate/aneroid fuel control, and boost sensor calibration

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

785 attachments & work tools

Dump body

Standard rear-dump body only, rated heaped capacity of about 78 m3 (102 yd3, SAE 2:1 fill) and struck capacity of about 57 m3 (74.6 yd3). No named alternate body line (quarry liner, dual-slope, coal/combination body) is documented for this early-production truck; that broader Cat Truck Bodies lineup was added to the model later in its life.

Tires

Standard fitment is a 33.00-51 bias-ply tire, 50-ply rating, rock-service (E-4) tread. This is the only fitment documented for the early-production truck. Radial 33.00R51/36.00R51 tires and quick-change rim options are later-production upgrades, not standard on this early build.

Suspension

Self-contained, sealed nitrogen-over-oil suspension struts at each corner, pin-to-pin mounted with double-shear clevis attachment. Front struts carry preset caster and camber and double as steering kingpins; rear struts allow axle oscillation and isolate the mainframe from twisting loads on rough haul roads. This strut layout is Caterpillar's long-standing off-highway-truck suspension architecture, carried through the 785 line from introduction.

All 785 assemblies by section

Every catalogued assembly group for the Caterpillar 785. Open an assembly to preview the parts inside — full OEM part numbers are available in Heavy Parts AI.

Air Inlet And Exhaust System
2w0730 Aftercooler Gp-Water
1w5254 Air Cleaner Gp
4w5160 Air Cleaner Gp
4w5159 Air Cleaner Gp
1w8924 Air Compressor Gp
2w0582 Air Compressor Gp*R
4w4960 Cartridge Gp-Turbocharger*R
9y1494 Cartridge Gp-Turbocharger
7w2301 Cartridge Gp-Turbocharger
1020302 Cartridge Gp-Turbocharger*R
7e9491 Cartridge Gp-Turbocharger*R
5t6763 Exhaust Ar-Body-Heat
5T***47Pipe Group-Exhaust; Piping Gp-Exhaust1
5T***47Guard Group-Platform1
5T***63Exhaust Ar-Body; -Heat1
See all parts with full part numbers in Heavy Parts AI →
1w5225 Lines Gp-Air
1w5231 Lines Gp-Air
2w0194 Lines Gp-Air Compressor
2w0218 Lines Gp-Turbocharger Oil
2w0212 Manifold Gp-Exhaust
1w5255 Muffler Gp
5t3247 Piping Gp-Exhaust
5T***47Pipe Group-Exhaust; Piping Gp-Exhaust1
See all parts with full part numbers in Heavy Parts AI →
8x0485 Piping Gp-Exhaust
8X***85Pipe Group-Exhaust; -Heated Body1
See all parts with full part numbers in Heavy Parts AI →
2w0215 Shield Gp-Exhaust-Part 2 Of 2
4p4463 Shield Gp-Exhaust
2w0215 Shield Gp-Exhaust
2w0215 Shield Gp-Exhaust-Part 1 Of 2
7w5465 Turbocharger Gp
2N***65Bolt-High Temperature; (3/8-16x1.75-In)8
2N***66Locknut; (3/8-16-Thd)(High Temperature)8
7E***92Turbocharger Group2
See all parts with full part numbers in Heavy Parts AI →
7w2151 Turbocharger Gp
1020303 Turbocharger Gp*R
7e9492 Turbocharger Gp*R
9y1490 Turbocharger Gp
4w6906 Turbocharger Gp
2w0213 Turbocharger Gp
2N***65Bolt-High Temperature; (3/8-16x1.75-In)8
2N***66Locknut; (3/8-16-Thd)(High Temperature)8
2W***13Turbocharger Group1
See all parts with full part numbers in Heavy Parts AI →
Basic Engine
1w3893 Belt Tightener Gp-Type 1
1W***93Belt Tightener Group; -Variable Speed-Non-Variable Speed1
See all parts with full part numbers in Heavy Parts AI →
1w3893 Belt Tightener Gp-Type 2
1W***93Belt Tightener Group; -Variable Speed-Non-Variable Speed1
See all parts with full part numbers in Heavy Parts AI →
4p5221 Camshaft Gp-Single
4P***21Camshaft Group; Camshaft Gp-Single1
See all parts with full part numbers in Heavy Parts AI →
7e6813 Camshaft Gp-Single
7E***13Camshaft Group; Camshaft Gp-Single1
See all parts with full part numbers in Heavy Parts AI →
7w1255 Camshaft Gp-Single
7W***55Camshaft Group; Camshaft Gp-Single1
See all parts with full part numbers in Heavy Parts AI →
8n7661 Camshaft Gp
4w9712 Camshaft Gp-Single
4W***12Camshaft Group-Single; Camshaft Group1
See all parts with full part numbers in Heavy Parts AI →
8n9641 Cover Gp-Cylinder Block
8N***41Cover Group-Cylinder Block; Cylinder Block Cover Group1
See all parts with full part numbers in Heavy Parts AI →
2w0204 Cover Gp-Flywheel Housing
2w0202 Cover Gp-Front Structure
2W***02Cover Group-Front Housing; Cover Gp-Front Structure1
See all parts with full part numbers in Heavy Parts AI →
7n1855 Cover Gp-Valve Mechanism-10 Required
7N***55Cover Group-Valve Mechanism; Valve Mechanisn Cover Group1
See all parts with full part numbers in Heavy Parts AI →
Crankshaft Bearing Replacements
4W***05Bearing-Main-(0.63 mm Undersize)7
4W***06Bearing-Main-(1.27 mm Undersize)7
4W***07Bearing-Main-(0.63 mm Oversize)7
See all parts with full part numbers in Heavy Parts AI →
8n7103 Crankshaft Gp
8N***03Crankshaft Group; Crankshaft Group1
See all parts with full part numbers in Heavy Parts AI →
9y9598 Cylinder Block As
9y9594 Cylinder Block As
2w2943 Cylinder Block As
7c6956 Cylinder Block As
7e4940 Cylinder Block As
2w2944 Cylinder Block Gp-Part 1 Of 2
2W***44Cylinder Block Group; Cylinder Block Group1
See all parts with full part numbers in Heavy Parts AI →
7c6957 Cylinder Block Gp
2w2944 Cylinder Block Gp-Part 2 Of 2
2W***44Cylinder Block Group; Cylinder Block Group1
See all parts with full part numbers in Heavy Parts AI →
2w8245 Cylinder Block Gp
4p9892 Cylinder Block Gp
4p7263 Cylinder Block Gp
2w2944 Cylinder Block Gp
2W***44Cylinder Block Group; Cylinder Block Group1
See all parts with full part numbers in Heavy Parts AI →
7e5861 Cylinder Head As
7e8760 Head As
7e5859 Cylinder Head As*R
7e8762 Cylinder Head As*R
4w0095 Cylinder Head Gp-12 Required
4W***95Cylinder Head Group; Cylinder Head Group1
See all parts with full part numbers in Heavy Parts AI →
7e8758 Cylinder Head Gp-12 Required*R
7e8759 Cylinder Head Gp*R
4w9560 Cylinder Head Gp*R
4w9559 Cylinder Head Gp-12 Required
7w3412 Damper Gp
9y7687 Damper Gp
9y1595 Drive Gp-Accessory
9Y***95Drive Group-Accessory; -Pump Drive1
See all parts with full part numbers in Heavy Parts AI →
7n4871 Drive Gp-Accessory
7n3978 Drive Gp-Accessory
7N***78Drive Group-Accessory; -Lower, Flywheel Housing1
See all parts with full part numbers in Heavy Parts AI →
7c0264 Drive Gp-Accessory
7C***64Drive Group-Accessory; -Upper, Rh1
See all parts with full part numbers in Heavy Parts AI →
1w8704 Drive Gp-Auxiliary
1W***04Drive Group-Auxiliary; -Water Pump1
See all parts with full part numbers in Heavy Parts AI →
1w5229 Drive Gp-Fan
7w7285 Drive Gp-Fan
7W***85Drive Group-Fan; -Non-Variable Speed1
See all parts with full part numbers in Heavy Parts AI →
7w5397 Drive Gp-Tachometer
2w8728 Drive Gp-Tachometer
9y7669 Flywheel Gp
8n8801 Flywheel Gp
8n7174 Gear Gp-Front
8N***74Gear Group-Front; -Standard Rotation-Accessory Drive-Jacket Water Pump-Fuel Transfer Pump-Oil Pump Drive1
See all parts with full part numbers in Heavy Parts AI →
4w5906 Gear Gp-Rear
4W***06Gear Group-Rear; Rear Gear Group1
See all parts with full part numbers in Heavy Parts AI →
4w7338 Gear Gp-Rear
7w5464 Gear Gp-Rear
8n9073 Housing Gp-Flywheel
7e9086 Housing Gp-Flywheel
7w4096 Housing Gp-Flywheel
7w6445 Housing Gp-Flywheel
8n8111 Housing Gp-Front
8N***11Housing Group-Front; Front Housing Group1
See all parts with full part numbers in Heavy Parts AI →
7w3724 Housing Gp-Front
7W***24Housing Group-Front; -Accessory Drive1
See all parts with full part numbers in Heavy Parts AI →
7e2865 Kit-Insert
8n7734 Lifting Gp
8N***34Lifting Group; Lifting Eye Gp-Engine1
See all parts with full part numbers in Heavy Parts AI →
2w0205 Pan Gp-Oil-Part 1 Of 2
2w0205 Pan Gp-Oil-Part 2 Of 2
7w5461 Piston & Rod Gp-12 Required
6i2861 Piston & Rod Gp-12 Required
7e1038 Piston & Rod Gp-12 Required
4w6435 Piston & Rod Gp-12 Required
7e1037 Piston Gp*R
7w5467 Piston Gp
4w4620 Piston Gp
7w3813 Seal Gp-Crankshaft
7n1854 Seal Gp-Crankshaft
7N***54Seal Group-Crankshaft; Crankshaft Seal Group1
See all parts with full part numbers in Heavy Parts AI →
7n7660 Shaft Gp-Stub
7N***60Shaft Group-Stub; -Crankshaft Pulley1
See all parts with full part numbers in Heavy Parts AI →
7c2655 Support Gp-Engine
2w0209 Support Gp-Engine
7e8098 Thermocouple Gp
7n1863 Trunnion Gp-Engine
4w1035 Valve Mechanism Gp-12 Required
4W***35Valve Mechanism Group; Valve Mechanism Group1
See all parts with full part numbers in Heavy Parts AI →
4w8129 Valve Mechanism Gp-12 Required
Cab, Gauges And Accessories
4v7849 Adjuster Gp-Seat-Suspension
8x0213 Air Conditioner & Mounting Gp
8X***13Air Conditioner & Mounting Group1
See all parts with full part numbers in Heavy Parts AI →
5t1616 Air Conditioner Ar
2W***16Compressor Group-Refrigerant1
3T***86Air Conditioner Group1
4W***33Condenser & Mounting Group1
See all parts with full part numbers in Heavy Parts AI →
3t4386 Air Conditioner Gp-Part 3 Of 4
3t4386 Air Conditioner Gp-Part 1 Of 4
3t4386 Air Conditioner Gp-Part 2 Of 4
3t4386 Air Conditioner Gp-Part 4 Of 4
5t6383 Cab Gp-Part 1 Of 2
8w1925 Cab Gp-Part 2 Of 2
5t6383 Cab Gp-Part 2 Of 2
8w1925 Cab Gp-Part 1 Of 2
5t4629 Cab Gp-Truck-Part 1 Of 2
8w1924 Cab Gp-Truck-Part 2 Of 2
8w1924 Cab Gp-Truck-Part 1 Of 2
5t4629 Cab Gp-Truck-Part 2 Of 2
7n4297 Clutch & Refrigerant Compressor Gp*R
7N***97Clutch & Refrig Compressor Group1
See all parts with full part numbers in Heavy Parts AI →
2w0216 Compressor Gp-Refrigerant
4w4033 Mounting & Condenser Gp
8x5298 Control & Mounting Gp
5t7241 Control & Mounting Gp-Electronic
8c4595 Cylinder Gp-Valve
8w4170 Door Gp-Rh
5t6163 Door Gp-Lh-Part 2 Of 2
5t6163 Door Gp-Lh-Part 1 Of 2
5t6360 Door Gp-Rh-Part 1 Of 2
5t6360 Door Gp-Rh-Part 2 Of 2
9d4795 Drive Gp-Tachometer
5t3211 Drive-Gp-Tachometer
6t4301 Harness As
6t4300 Harness As
3t4387 Heater Group-Part 3 Of 3
3t4387 Heater Group-Part 2 Of 3
3t4387 Heater Group-Part 1 Of 3
5t0856 Heater Gp-Cab
8w4065 Heater Gp-Lube Oil
1S***94Clip-R.H. Side Engine Support1
2H***33Screw-Machine; (10-32x0.25-In)1
2L***67Terminal-Ring; (10-Ga To 12-Ga, 1/4-In Screw)1
See all parts with full part numbers in Heavy Parts AI →
5t0857 Horn Gp-Air-Cab
5d6998 Horn Gp-Air
5t3215 Horn Gp-Air-Chassis
8w7396 Horn Gp-Air
6i1628 Indicator Gp-Filter Change
1P***78Clamp; (Hose)2
5M***62Bolt; (3/8-16x0.75-In)3
5P***23Elbow; --90 Degrees-- Tube Assembly To Horn Valve2
See all parts with full part numbers in Heavy Parts AI →
5t3248 Lines Gp-Air Conditioner
5T***48Lines Group-Air Conditioner; Lines Gp-Air Conditioning1
See all parts with full part numbers in Heavy Parts AI →
5t3218 Lines Gp-Heater
5t8170 Linkage Gp-Wiper
5t3205 Mirror Gp-Rear View-Cab
5T***05Mirror Group-Rear View; -Lh-Cab-Dual Slope1
See all parts with full part numbers in Heavy Parts AI →
8w1923 Mirror Gp-Rear View-Rh
8W***23Mirror Group-Rear View; -Rh-Chassis-Dual Slope1
See all parts with full part numbers in Heavy Parts AI →
5t0595 Mirror Gp-Rear View-Rh
5t7225 Monitor & Mounting Gp
5t8177 Motor Gp-Wiper
8x2824 Motor Gp-Wiper
8X***24Motor Group-Windshield Wiper; -Front1
See all parts with full part numbers in Heavy Parts AI →
5t2055 Seat Gp
6w8857 Seat Gp
9c8664 Seat Gp
8w4735 Seat Gp
8w4492 Seat Gp-Adjustable
8w2967 Seat Gp-Companion
5t6543 Seat Gp-Companion
3v8252 Seat Gp-Suspension
3V***52Seat Group-Suspension; Suspension Seat Group1
See all parts with full part numbers in Heavy Parts AI →
8x2822 Shaft Gp-Wiper
8w4070 Starting Ar-Cold Weather
7C***07Heater Group-Jacket Water1
7X***08Film-Instruction-Attach To 8w***47 Box As1
8W***65Heater Group-Lube Oil1
See all parts with full part numbers in Heavy Parts AI →
8w5198 Suppression Ar-Fire
8W***47Wiring Group-Cab1
8W***96Wiring Group-Sensor1
8W***97Suppression Group-Fire1
See all parts with full part numbers in Heavy Parts AI →
8w5195 Suppression Ar-Fire
8W***47Wiring Group-Cab1
8W***94Suppression Group-Fire1
8W***95Suppression Ar-Fire1
See all parts with full part numbers in Heavy Parts AI →
8w5197 Suppression Gp-Fire
8w5194 Suppression Gp-Fire
6w8856 Suspension Gp-Seat-Part 2 Of 2
5v4861 Suspension Gp-Seat-Part 2 Of 2
6w8856 Suspension Gp-Seat-Part 1 Of 2
5v4861 Suspension Gp-Seat-Part 1 Of 2
8w8665 Tachograph Ar
5T***11Drive Group-Tachometer1
5T***75Tachograph Group1
7N***29Connector To Cab Wall1
See all parts with full part numbers in Heavy Parts AI →
5t9075 Tachograph Gp-24 Volt
5t3221 Tread Gp-Non-Skid
8c4594 Valve & Cylinder Gp
8c4593 Valve & Cylinder Gp
8t9687 Valve & Cylinder Gp
8t9686 Valve & Cylinder Gp
3d9943 Valve As-Horn
7t8620 Valve Gp-Actuator Release
5t8174 Valve Gp-Air Control
5T***74Valve Group-Air Control; -Window Wiper1
See all parts with full part numbers in Heavy Parts AI →
5t6548 Visor Gp-Cab
5t1342 Washer Gp
5T***42Washer Group-Window; -Front Window1
See all parts with full part numbers in Heavy Parts AI →
5t7631 Washer Gp-Windshield
8w6211 Window Gp
5t6550 Wiper Gp-Windshield
Chassis
8x1188 Body & Canopy As
8x1184 Body & Canopy As
8W***00Sideboard As1
8X***83Body & Canopy As1
8X***84Body & Canopy As1
See all parts with full part numbers in Heavy Parts AI →
8x1185 Body & Canopy As-Heavy Duty
8x1183 Body & Canopy As
8x1187 Body & Canopy As
8x1186 Body & Canopy As
8W***00Sideboard As1
8X***85Body & Canopy As; -Heavy Duty1
8X***86Body & Canopy As1
See all parts with full part numbers in Heavy Parts AI →
5t7738 Body Gp-Truck-Part 1 Of 2
8w5610 Body Gp-Truck-Part 2 Of 2
5t6021 Body Gp-Truck-Part 1 Of 2
5t6021 Body Gp-Truck-Part 2 Of 2
5t6021 Body Gp-Truck
5t7739 Body Gp-Truck-Part 1 Of 2
5t7739 Body Gp-Truck-Part 2 Of 2
8w5610 Body Gp-Truck-Part 1 Of 2
5t7738 Body Gp-Truck-Part 2 Of 2
5t6021 Truck Body Gp-Part 2 Of 2
5t6021 Truck Body Gp-Part 1 Of 2
5t6046 Cable Gp-Truck Body
5T***46Cable Group-Truck Body; -Truck Body1
See all parts with full part numbers in Heavy Parts AI →
5t8129 Catwalk Gp
5t8130 Cowling Gp
8w3870 Cowling Gp
8w2874 Extension & Brace Gp
8W***74Extension & Brace Group; -Front Guard-Canopy1
See all parts with full part numbers in Heavy Parts AI →
8x1192 Extension As-Heavy Duty
8x1193 Extension As
8w4439 Fender Gp-Truck
5t3212 Fender Gp-Truck
5t8131 Frame Gp-Truck
8w4356 Frame Gp-Truck
5t3230 Guard Gp-Drive Shaft
5t6747 Guard Gp-Platform
5t3214 Hood Gp-Truck-Part 2 Of 3
5t3214 Hood Gp-Truck-Part 1 Of 3
5t3214 Hood Gp-Truck-Part 3 Of 3
5t8132 Ladder Gp-Part 2 Of 2
5t8132 Ladder Gp-Part 1 Of 2
5t6889 Liner Gp-Body
5t6020 Liner Gp-Body
1146362 Liner Gp-Body-Heavy Weight
8x1194 Liner Gp-Extension
5t0840 Lines Gp-Grease-Part 1 Of 3
5t0840 Lines Gp-Grease-Part 2 Of 3
5t0840 Lines Gp-Grease-Part 3 Of 3
8x8260 Lubrication Gp-Automatic-Part 1 Of 3
5t3254 Lubrication & Transfer Gp-Part 2 Of 2
5t3254 Lubrication & Transfer Gp-Part 1 Of 2
8x8260 Lubrication Gp-Automatic-Part 2 Of 3
8x8260 Lubrication Gp-Automatic-Part 3 Of 3
8w2625 Mounting Gp-Auxiliary Body
8x1191 Mounting Gp-Body
5t0882 Mounting Gp-Hydraulic Tank
5T***82Mounting Group-Hydraulic Tank; -Tc, Hoist, Brake, Xmsn1
See all parts with full part numbers in Heavy Parts AI →
4p3663 Platform Gp
5t3220 Platform Gp-Rh
8w4594 Pump Gp-Lubrication
8W***94Pump Group-Lubrication; -Automatic Lubrication1
See all parts with full part numbers in Heavy Parts AI →
5t7800 Pump Gp-Lubrication
5T***00Pump Group-Lubrication; -Automatic Lubrication1
See all parts with full part numbers in Heavy Parts AI →
9t9073 Suspension Gp-Front
1u4605 Suspension Gp-Front
4t9232 Suspension Gp-Front
1U***05Suspension Group-Front1
4T***32Suspension Group-Front1
5P***79Tag-Notice; (Cylinder Pressure)1
See all parts with full part numbers in Heavy Parts AI →
5t0883 Suspension Gp-Front
5t0884 Suspension Gp-Rear
1u4651 Suspension Gp-Rear
4t8688 Suspension Gp-Rear
1U***51Suspension Group-Rear1
4T***88Suspension Group-Rear1
5P***79Tag-Notice; (Cylinder Pressure)1
See all parts with full part numbers in Heavy Parts AI →
8w2597 Valve Gp-Lubrication
8W***97Valve Group-Lube Distribution; -4-Injector1
See all parts with full part numbers in Heavy Parts AI →
5t5010 Valve Gp-Lube Distribution
5T***10Valve Group-Lube Distribution; -5-Injector1
See all parts with full part numbers in Heavy Parts AI →
5t5009 Valve Gp-Lube Distribution
5T***09Valve Group-Lube Distribution; -3-Injector-Steering Cyl, Linkage, Rh, Lh-Hoist, Rear Susp Cyl, Rh, Lh-Front Susp, Steer Cyl, Rh, Lh1
See all parts with full part numbers in Heavy Parts AI →
6g9270 Wheel Gp-Front
Cooling System
2w0183 Connection Gp-Water-Outlet
8w2316 Conversion Gp-C.S. Radiator
02***41Bolt-Socket Head; (1/4-28x0.625-In)8
0S***85Bolt; 12.7 mm (1/2") Diameter X 38.1 mm (1 1/2") Length Generator To Engine4
0S***94Bolt (1 In. Long 3/8 In. Dia.); Plate Assembly To Support Assembly10
See all parts with full part numbers in Heavy Parts AI →
4w5892 Cooler Gp-Engine Oil
4W***92Cooler Group-Engine Oil; Engine Oil Cooler Group1
See all parts with full part numbers in Heavy Parts AI →
4w4980 Core Gp-Oil Cooler*R
4w0413 Core Group-Oil Cooler*R
4W***13Core Group-Oil Cooler; -Rear Brake, Hoist-Front Brake, Tc1
See all parts with full part numbers in Heavy Parts AI →
4w5056 Core Gp-Oil Cooler*R
4W***56Core Group-Oil Cooler; -Transmission1
See all parts with full part numbers in Heavy Parts AI →
1n3599 Cover Gp-Protection
1N***99Cover Group-Protection; Radiator Cap Protection Cover Group1
See all parts with full part numbers in Heavy Parts AI →
1w5256 Fan Gp-Suction
7c1107 Heater Gp-Jacket Water
4n0730 Heater Gp-Jacket Water-2 Required
7w7149 Heater Gp-Jacket Water
4w1510 Housing & Regulator Gp-Outlet Control
4W***10Housing & Regulator Group; -Outlet Control1
See all parts with full part numbers in Heavy Parts AI →
7e5638 Kit-Stabilizer
0V***75Screw,Cap,Hexagon H Shaft Mtg,Accessory Drive10
1A***22Bolt-Generator To Flywheel Housing6
1D***19Nut-Retainer To Fan Bracket Assembly6
See all parts with full part numbers in Heavy Parts AI →
2w0214 Lines Gp-Water
2W***14Lines Group-Water; Lines Gp-Water (Upper)1
See all parts with full part numbers in Heavy Parts AI →
2w0211 Lines Gp-Water
2W***11Lines Group-Water; Lines Gp-Water (Aftercooler)1
See all parts with full part numbers in Heavy Parts AI →
1w5222 Lines Gp-Water-Part 1 Of 2
1W***22Lines Group-Water; Lines Gp-Water (Lower)1
See all parts with full part numbers in Heavy Parts AI →
7w0486 Lines Gp-Water
1w0720 Lines Gp-Water
1W***20Lines Group-Water; Lines Gp-Water (Turbocharger)1
See all parts with full part numbers in Heavy Parts AI →
1w5224 Lines Gp-Water
1W***24Lines Group-Water; Lines Gp-Water (Bypass)1
See all parts with full part numbers in Heavy Parts AI →
1w5223 Lines Gp-Water
1W***23Lines Group-Water; -Brake Cooler Lines1
See all parts with full part numbers in Heavy Parts AI →
1w5222 Lines Gp-Water-Part 2 Of 2
1W***22Lines Group-Water; Lines Gp-Water (Lower)1
See all parts with full part numbers in Heavy Parts AI →
5n5978 Pump Gp-Auxiliary-Fresh Water
5N***78Pump Group-Auxiliary; -Fresh Water1
See all parts with full part numbers in Heavy Parts AI →
1w0410 Pump Gp-Auxiliary-Fresh Water
1W***10Pump Group-Auxiliary; -Aftercooler1
See all parts with full part numbers in Heavy Parts AI →
7e9781 Pump Gp-Auxiliary*R
7E***81Pump Group-Auxiliary Fresh Water1
See all parts with full part numbers in Heavy Parts AI →
2w9729 Pump Gp-Water
2W***29Pump Group-Water; Water Pump Group1
See all parts with full part numbers in Heavy Parts AI →
2w9728 Pump Gp-Water*R
1w5232 Radiator Gp-Folded Core-Part 1 Of 3
1w5232 Radiator Gp-Folded Core-Part 3 Of 3
1w5232 Radiator Gp-Folded Core-Part 1 Of 2
1w5232 Radiator Gp-Folded Core-Part 2 Of 3
1w5232 Radiator Gp-Folded Core-Part 2 Of 2
7e2507 Radiator Gp
1w5233 Radiator Group-Folded Core
7w2766 Radiator Group-Folded Core
8w9381 Shutter Gp
8w9382 Shutter Gp-Radiator
6d1039 Valve As
6D***39Valve As; -Exhaust Bypass-Exhaust Diverter1
See all parts with full part numbers in Heavy Parts AI →
Electrical And Starting System
9w3352 Control Gp-Electronic*R
9x9827 Control Gp-Electronic
2a6468 Harness As
8w6167 Sensor & Mounting Gp-Payload
1003332 Sensor & Mtg Gp-Electric
10***32Sensor & Mtg Group-Electric; -Engine1
See all parts with full part numbers in Heavy Parts AI →
Engine Arrangement
1w5220 Engine Ar-Part 1 Of 4*R
1W***93Belt Tightener Group; -Variable Speed-Non-Variable Speed1
1W***20Engine Ar1
1W***24Air Compressor Group1
See all parts with full part numbers in Heavy Parts AI →
1w5220 Engine Ar-Part 2 Of 4*R
1N***61Filter Group-Fuel1
1N***64Filler Group-Oil1
1W***20Lines Group-Water; Lines Gp-Water (Turbocharger)1
See all parts with full part numbers in Heavy Parts AI →
1w5220 Engine Ar-Part 4 Of 4*R
10***79Kit-Gasket; (Auxiliary Water Pump)0
1W***20Engine Ar1
2W***13Turbocharger Group1
See all parts with full part numbers in Heavy Parts AI →
1w5220 Engine Ar-Part 3 Of 4*R
1N***47Switch Group-Flow1
1W***10Pump Group-Auxiliary; -Aftercooler1
1W***48Mounting Group-Alternator1
See all parts with full part numbers in Heavy Parts AI →
Fuel System And Governor
8w4638 Adapter Gp-Fast Fill Fuel
9d9880 Adapter Gp-Fuel
4w2966 Control Gp-Fuel Injection-Part 1 Of 2
4W***66Control Group-Fuel Injection; Fuel Injection Control Group1
See all parts with full part numbers in Heavy Parts AI →
8n7725 Control Gp-Fuel Injection-Part 1 Of 2
8N***25Control Group-Fuel Injection; Fuel Injection Control Group1
See all parts with full part numbers in Heavy Parts AI →
4w2966 Control Gp-Fuel Injection-Part 2 Of 2
4W***66Control Group-Fuel Injection; Fuel Injection Control Group1
See all parts with full part numbers in Heavy Parts AI →
8n7725 Control Gp-Fuel Injection-Part 2 Of 2
8N***25Control Group-Fuel Injection; Fuel Injection Control Group1
See all parts with full part numbers in Heavy Parts AI →
6i3843 Control Gp-Fuel Ratio
7c4265 Control Gp-Fuel Ratio
7c3998 Control Gp-Fuel Ratio
5t3209 Control Gp-Governor
5t0853 Control Gp-Governor
7c3999 Control Gp-Governor
4p6538 Control Gp-Governor
9d0630 Cover Gp-Dust
1w2135 Drive Group-Governor
1W***35Drive Group-Governor; Governor Drive Group1
See all parts with full part numbers in Heavy Parts AI →
1w6034 Fastener Gp-Governor-Rh
1n3261 Filter Gp-Fuel
2w6071 Filter Gp-Primary Fuel
2w1219 Flyweight Gp
9y2576 Governor Gp-Woodward 3161-Part 5 Of 5
9y2133 Governor Gp-Woodward 3161
7c3791 Governor Gp-Part 4 Of 6
6i0659 Governor Gp-Part 4 Of 6*R
7e7249 Governor Gp-Woodward-Part 4 Of 6*R
7e7249 Governor Gp-Woodward-Part 6 Of 6*R
7c5872 Governor Gp
6i0659 Governor Gp-Part 3 Of 6
9y7559 Governor Gp- Part 3 Of 6
9y6727 Governor Gp-Woodward 3161-Part 1 Of 6
9y6727 Governor Gp-Woodward 3161-Part 4 Of 6
7w4963 Governor Gp-Part 2 Of 6
9y6727 Governor Gp-Woodward 3161-Part 2 Of 6
9y7559 Governor Gp- Part 4 Of 6
7c9456 Governor Gp
7c3791 Governor Gp-Part 6 Of 6
7c5228 Governor Gp-Woodward 3161-Part 5 Of 5
9y7559 Governor Gp- Part 6 Of 6
9y2576 Governor Gp-Woodward 3161-Part 4 Of 5
6i0658 Governor Gp-Part 1 Of 6*R
7w4963 Governor Gp-Part 1 Of 6
6i0658 Governor Gp-Part 6 Of 6*R
7w4963 Governor Gp-Part 5 Of 6
9y6680 Governor Gp-Woodward 3161
9Y***80Governor Group1
9Y***27Governor Group1
See all parts with full part numbers in Heavy Parts AI →
7c3791 Governor Gp-Part 5 Of 6
7c4271 Governor Gp-Woodward 3161
9y6727 Governor Gp-Woodward 3161-Part 6 Of 6
7e7249 Governor Gp-Woodward-Part 5 Of 6*R
6i0659 Governor Gp-Part 2 Of 6*R
9y7559 Governor Gp- Part 1 Of 6
6i0658 Governor Gp-Part 4 Of 6*R
6i0658 Governor Gp-Part 3 Of 6*R
7e7249 Governor Gp-Woodward-Part 1 Of 6*R
7w4963 Governor Gp-Part 3 Of 6
7c3791 Governor Gp-Part 2 Of 6
6i0658 Governor Gp-Part 2 Of 6*R
7w4963 Governor Gp-Part 6 Of 6
6i0659 Governor Gp-Part 6 Of 6*R
7c5228 Governor Gp-Woodward 3161-Part 2 Of 5
7c5228 Governor Gp-Woodward 3161-Part 1 Of 5
9y7559 Governor Gp- Part 5 Of 6
6i0659 Governor Gp-Part 5 Of 6*R
7e7249 Governor Gp-Woodward-Part 3 Of 6*R
7c5228 Governor Gp-Woodward 3161-Part 3 Of 5
7c3791 Governor Gp-Part 1 Of 6
7w4963 Governor Gp-Part 4 Of 6
9y6727 Governor Gp-Woodward 3161-Part 3 Of 6
7e7249 Governor Gp-Woodward-Part 2 Of 6*R
9y6727 Governor Gp-Woodward 3161-Part 5 Of 6
6i0658 Governor Gp-Part 5 Of 6*R
6i0659 Governor Gp-Part 1 Of 6*R
9y2576 Governor Gp-Woodward 3161-Part 3 Of 5
9y2576 Governor Gp-Woodward 3161-Part 2 Of 5
7c5228 Governor Gp-Woodward 3161-Part 4 Of 5
7c3791 Governor Gp-Part 3 Of 6
1w5228 Governor Gp
1W***35Drive Group-Governor; Governor Drive Group1
1W***36Lines Group-Fuel Ratio Control1
1W***28Governor Group1
See all parts with full part numbers in Heavy Parts AI →
9y2576 Governor Gp-Woodward 3161-Part 1 Of 5
9y7559 Governor Gp- Part 2 Of 6
8w1913 Heater Gp-Fuel
8w5255 Heater Gp-Fuel
7e5416 Housing Gp-Governor
4p9076 Injector Gp-Fuel
1006306 Kit-Conversion
5t3217 Lines Gp-Fuel
1w5226 Lines Gp-Fuel Injection-Part 2 Of 3
1w5226 Lines Gp-Fuel Injection-Part 3 Of 3
1w5226 Lines Gp-Fuel Injection-Part 1 Of 3
1w2136 Lines Gp-Air/Fuel Ratio Control
7c2233 Pump Gp-Fuel Injection-12 Required
7C***33Pump Group-Fuel Injection; -7c***39 Replaced By 9y***73-Page1
See all parts with full part numbers in Heavy Parts AI →
9y1796 Pump Gp-Fuel Injection-12 Required
7w1536 Pump Gp-Fuel Injection-12 Required
9y1796 Pump Gp-Fuel Injection
8n7763 Pump Gp-Fuel Priming
8N***63Pump Group-Fuel Priming; Fuel Priming Pump Group1
See all parts with full part numbers in Heavy Parts AI →
8n6151 Pump Gp-Fuel Transfer
8N***51Pump Group-Fuel Transfer; (1-Section Gear)1
See all parts with full part numbers in Heavy Parts AI →
1n4478 Pump Gp-Fuel Transfer*R
1N***78Pump Group-Fuel Transfer; (1-Section Gear)1
See all parts with full part numbers in Heavy Parts AI →
7c3982 Pump Gp-Geroter
6i3842 Pump Gp-Gerotor
9y1588 Pump Gp-Gerotor
8w0652 Float Sender Gp
7w3555 Shut-Off Gp-Electrical
1w4861 Shut-Off Gp-Manual
6g7370 Tank Gp-Fuel
7e0920 Control Gp-Torque
2g9000 Adapter Gp-Fast Fill
8x6866 Valve Gp-Air Control
5d0470 Valve Gp-Quick Release
5D***70Valve Group-Quick Release; -Parking Brake-Air1
See all parts with full part numbers in Heavy Parts AI →
Hydraulic System
9g9288 Cover Gp-Protection
9G***88Protection Cover Group; -Hydraulic Tank-Steering Tank Fill Cap-Hydraulic Tank Fill Cap1
See all parts with full part numbers in Heavy Parts AI →
9t5209 Valve Gp-Relief
9t5210 Valve Gp-Relief
9T***10Valve Group-Relief; -Brake Oil Cooler Lines1
See all parts with full part numbers in Heavy Parts AI →
6e1155 Valve Gp-Relief
6E***55Valve Group-Relief; -Pilot Operated Hoist1
See all parts with full part numbers in Heavy Parts AI →
3g6849 Valve Gp-Relief-Pilot Operated
3G***49Valve Group-Relief; -Hoist Control1
See all parts with full part numbers in Heavy Parts AI →
8j2380 Valve Gp-Relief
8J***80Valve Group-Relief; -Rear Brake1
See all parts with full part numbers in Heavy Parts AI →
5t0910 Accumulator Gp-Steering
9t4785 Accumulator Gp-Bladder
9T***85Accumulator Group-Bladder; -Charged1
See all parts with full part numbers in Heavy Parts AI →
5t6942 Cover Gp-Protection
5T***42Cap Group-Protection; -Transmission Tank Fill Cap1
See all parts with full part numbers in Heavy Parts AI →
5t6377 Control Gp-Hoist
5T***77Control Group-Hoist; -Chassis-Pulled Unit1
See all parts with full part numbers in Heavy Parts AI →
5t6716 Control Gp-Hoist-Cab Area
6g8390 Cover Gp-Protection
6G***90Covers Group-Protection; -Brake, Hoist, Torque Converter1
See all parts with full part numbers in Heavy Parts AI →
6g9560 Cylinder & Mounting Gp-Hoist
6g9570 Steering Cylinder & Mounting Gp
4t5931 Cylinder Gp-Hoist (Chg 01-06)*R
1u3182 Cylinder Gp-Steering (Chg 03)
1u3182 Cylinder Gp-Steering (Change 04 & 05)
1u3182 Cylinder Gp-Steer (Change 02)
6g9580 Drive Gp-Pump
8x2796 Drive Gp-Pump
1u8331 Conversion Gp-Steering Tank
8w4444 Lines Gp-Hoist Oil-Part 2 Of 2
5t3224 Lines Gp-Hoist Oil-Part 1 Of 3
8w4444 Lines Gp-Hoist Oil-Part 1 Of 2
5t3224 Lines Gp-Hoist Oil-Part 3 Of 3
5t3224 Lines Gp-Hoist Oil-Part 2 Of 3
6e2308 Manifold Gp
4t2606 Gear Pump Group
4T***06Pump Group-Gear; -Hoist, Rear Brake Cooling1
See all parts with full part numbers in Heavy Parts AI →
5t3229 Pump Gp-Gear
5T***29Pump Group-Gear; -Hoist, Rear Brake Cooling1
See all parts with full part numbers in Heavy Parts AI →
1u4840 Filter & Tank Gp-Part 1 Of 2
6e6296 Tank & Filter Gp Part 1 Of 2
1u4840 Tank & Filter Gp-Part 1 Of 2
1u4840 Filter & Tank Gp-Part 2 Of 2
1u4840 Tank & Filter Gp-Part 2 Of 2
6e6296 Tank & Filter Gp Part 2 Of 2
6e1851 Tank Gp-Brake
5t0870 Tank Gp-Hydraulic
9t7972 Tank Gp-Hydraulic & Transmission-Part 3 Of 3
4t2732 Tank Gp-Hydraulic & Transmission-Part 1 Of 4
4t2732 Tank Gp-Hydraulic & Transmission-Part 4 Of 4
4t4147 Tank Gp-Hydraulic & Transmission-Part 1 Of 3
4T***47Tank Group-Hydraulic & Tmsn; -Tc, Hoist, Brake, Xmsn1
See all parts with full part numbers in Heavy Parts AI →
9t7972 Tank Gp-Hydraulic & Transmission-Part 2 Of 3
4t4147 Tank Gp-Hydraulic & Transmission-Part 3 Of 3
4T***47Tank Group-Hydraulic & Tmsn; -Tc, Hoist, Brake, Xmsn1
See all parts with full part numbers in Heavy Parts AI →
4t2732 Tank Gp-Hydraulic & Transmission-Part 3 Of 4
4t4147 Tank Gp-Hydraulic & Transmission-Part 2 Of 3
4T***47Tank Group-Hydraulic & Tmsn; -Tc, Hoist, Brake, Xmsn1
See all parts with full part numbers in Heavy Parts AI →
4t2732 Tank Gp-Hydraulic & Transmission-Part 2 Of 4
9t7972 Tank Gp-Hydraulic & Transmission-Part 1 Of 3
4t4147 Tank Gp-Hydraulic & Transmission- Part 2 Of 3
4T***47Tank Group-Hydraulic & Tmsn; -Tc, Hoist, Brake, Xmsn1
See all parts with full part numbers in Heavy Parts AI →
6e3806 Valve Gp
6e3528 Valve Gp-Breaker Relief
6E***28Valve Group-Breaker Relief; -Sound Suppression1
See all parts with full part numbers in Heavy Parts AI →
4t7345 Valve Gp-Control
4T***45Valve Group-Control; -Pulled Unit1
See all parts with full part numbers in Heavy Parts AI →
9t9898 Valve Gp-Counterbalance
9T***98Valve Group-Counterbalance; -Hoist1
See all parts with full part numbers in Heavy Parts AI →
4t7399 Valve Gp-Diverter
6e2235 Valve Gp-Diverter
3t0062 Valve Gp-Solenoid-Proportional
3T***62Valve Group-Solenoid; (Traction Control Proportional)1
See all parts with full part numbers in Heavy Parts AI →
9g9208 Control Gp-Hydraulic-Part 1 Of 2
9G***08Valve Group-Traction Control; -Antispin1
See all parts with full part numbers in Heavy Parts AI →
9g9208 Control Gp-Hydraulic-Part 2 Of 2
9G***08Valve Group-Traction Control; -Antispin1
See all parts with full part numbers in Heavy Parts AI →
Lubrication System
4w1449 Breather Gp
4W***49Breather Group; Breather Gp-Crankcase1
See all parts with full part numbers in Heavy Parts AI →
1w0236 Extension Gp-Drain
1n4764 Filler Gp-Oil
2w0201 Filler Gp-Oil
2w0206 Filter Gp-Oil
4w0472 Fumes Disposal Gp
4W***72Fumes Disposal Group; Fumes Disposal Group1
See all parts with full part numbers in Heavy Parts AI →
2w0203 Gauge Gp-Oil Level (Dipstick)
2W***03Gauge Group-Oil Level (Dipstick)1
See all parts with full part numbers in Heavy Parts AI →
2w0207 Lines Gp-Engine Oil-Part 1 Of 2
2w0207 Lines Gp-Engine Oil Part 2 Of 2
2w0207 Lines Gp-Engine Oil-Part 2 Of 2
5t1610 Oil Change Gp-High Speed
8x8365 Oil Change Gp-High Speed
2w5477 Pump Gp-Engine Oil*R
2W***77Pump Group-Engine Oil; -2-Section Gear1
See all parts with full part numbers in Heavy Parts AI →
8n6152 Pump Gp-Engine Oil
8N***52Pump Group-Engine Oil; -2-Section Gear1
See all parts with full part numbers in Heavy Parts AI →
8n7805 Pump Gp-Scavenge Oil
8N***05Pump Group-Scavenge; -Front Sump1
See all parts with full part numbers in Heavy Parts AI →
1w8508 Pump Gp-Scavenge Oil*R
1W***08Pump Group-Scavenge; -Rear Sump-Front Sump1
See all parts with full part numbers in Heavy Parts AI →
Power Train-Power Transmission Unit
9g9437 Actuator Gp-Rotary
9w4119 Actuator Gp-Rotary
9W***19Actuator Group-Rotary; -Transmission Control Valve1
See all parts with full part numbers in Heavy Parts AI →
9w4033 Actuator Gp-Rotary
3t0033 Parts & Case Gp
8w5077 Control Ar
3T***29Control Group (No Serviceable Parts)1
5T***33Mounting Group-Control1
5T***35Sensor Group-Speed; -Wheel Speed1
See all parts with full part numbers in Heavy Parts AI →
5t1618 Control Ar
3T***29Control Group (No Serviceable Parts)1
5T***18Control Ar-Aeta1
5T***33Mounting Group-Control1
See all parts with full part numbers in Heavy Parts AI →
8w5078 Control Gp-Anti-Spin
5t6545 Control Gp-Transmission
5t6545 Transmission Control Gp
3t0288 Control Gp-Transmission Hydraulic-Part 1 Of 2
3T***88Control Group-Transmission Hydraulic; Control Gp-Transmission Hydraulic1
See all parts with full part numbers in Heavy Parts AI →
3t0288 Control Gp-Transmission Hydraulic-Part 2 Of 2
3T***88Control Group-Transmission Hydraulic; Control Gp-Transmission Hydraulic1
See all parts with full part numbers in Heavy Parts AI →
3t0288 Control Gp-Transmission Hydraulic Part 2 Of 2
3T***88Control Group-Transmission Hydraulic; Control Gp-Transmission Hydraulic1
See all parts with full part numbers in Heavy Parts AI →
3t0288 Control Gp-Transmission Hydraulic Part 1 Of 2
3T***88Control Group-Transmission Hydraulic; Control Gp-Transmission Hydraulic1
See all parts with full part numbers in Heavy Parts AI →
7t4997 Covers Gp-Shipping
7T***97Cover Group-Shipping; -Transmission-Transmission Control1
See all parts with full part numbers in Heavy Parts AI →
8w9545 Differential & Bevel Gear Gp
8W***45Differential & Bevel Gear Group1
See all parts with full part numbers in Heavy Parts AI →
5t8901 Differential & Bevel Gear Gp
5T***01Differential & Bevel Gear Group1
See all parts with full part numbers in Heavy Parts AI →
8w9544 Differential Gp
5t1030 Differential Gp
8w4448 Lines & Torque Converter Filter Gp-Part 2 Of 2
8W***48Filter & Lines Group-Torque Conv1
See all parts with full part numbers in Heavy Parts AI →
8w4448 Lines & Torque Converter Filter Gp-Part 1 Of 2
8W***48Filter & Lines Group-Torque Conv1
See all parts with full part numbers in Heavy Parts AI →
5t3227 Lines & Torque Converter Filter Gp-Part 4 Of 4
5T***27Filter & Lines Group-Torque Conv1
See all parts with full part numbers in Heavy Parts AI →
5t3227 Lines & Torque Converter Filter Gp-Part 1 Of 4
5T***27Filter & Lines Group-Torque Conv1
See all parts with full part numbers in Heavy Parts AI →
5t3227 Lines & Torque Converter Filter Gp-Part 2 Of 4
5T***27Filter & Lines Group-Torque Conv1
See all parts with full part numbers in Heavy Parts AI →
5t3227 Lines & Torque Converter & Filter Gp-Part 1 Of 4
5T***27Filter & Lines Group-Torque Conv1
See all parts with full part numbers in Heavy Parts AI →
5t3227 Lines & Torque Converter Filter Gp-Part 3 Of 4
5T***27Filter & Lines Group-Torque Conv1
See all parts with full part numbers in Heavy Parts AI →
4t4760 Filter Gp
4T***60Filter Group-Transmission; -Torque Converter Charging1
See all parts with full part numbers in Heavy Parts AI →
6g9375 Final Drive Gp
7i5683 Final Drive Gp
1152970 Final Drive Gp
3t0035 Gear Gp-Transfer-Input-Part 2 Of 2
3T***35Gear Group-Transfer; Gear Gp-Transfer-Input1
See all parts with full part numbers in Heavy Parts AI →
3t0035 Gear Gp-Transfer-Input-Part 1 Of 2
3T***35Gear Group-Transfer; Gear Gp-Transfer-Input1
See all parts with full part numbers in Heavy Parts AI →
3t0031 Transfer Gear Gp-Input-Part 1 Of 2
3T***31Gear Group-Transfer; Gear Gp-Transfer-Input1
See all parts with full part numbers in Heavy Parts AI →
3t0031 Transfer Gear Gp-Input-Part 2 Of 2
3T***31Gear Group-Transfer; Gear Gp-Transfer-Input1
See all parts with full part numbers in Heavy Parts AI →
6y5643 Gear Gp-Transfer-Part 1 Of 2
6y5643 Gear Gp-Transfer-Part 2 Of 2
6g9380 Housing Gp-Rear Axle
1186674 Kit-Final Drive Bearing
11***74Kit-Final Drive Bearing1
12***72Seal-Ring (680.00mm Id)1
2D***07Seal-O-Ring1
See all parts with full part numbers in Heavy Parts AI →
1250702 Kit-Front Wheel & Brake Brg
12***41Seal-Ring1
12***02Kit-Front Wheel & Brake Bearing1
2D***07Seal-O-Ring1
See all parts with full part numbers in Heavy Parts AI →
7x2875 Kit-Transmission Bearing
1B***67Ball Bearing1
1J***60Cup-Bearing; (Tapered)1
1J***57Cone-Bearing1
See all parts with full part numbers in Heavy Parts AI →
1198995 Kit-Transmission Bearing
11***38Bearing-Sleeve1
11***95Kit-Transmission Bearing1
12***35Bearing As-Roller1
See all parts with full part numbers in Heavy Parts AI →
5t3255 Lines Gp-Attachment
5t3226 Lines Gp-Transmission Oil-Part 3 Of 3
8w4447 Lines Gp-Transmission Oil-Part 2 Of 3
8w4447 Lines Gp-Transmission Oil-Part 1 Of 3
8w4447 Lines Gp-Transmission Oil-Part 3 Of 3
5t3226 Lines Gp-Transmission Oil-Part 2 Of 3
5t3226 Lines Gp-Transmission Oil-Part 1 Of 3
5t3233 Mounting Gp-Control
5t6639 Neutralizer Gp-Transmission
3t0036 Planetary Gp-Transmission-Part 1 Of 2
3t0032 Planetary Gp-Part 1 Of 2
3t0032 Planetary Gp-Part 2 Of 2
3t0036 Planetary Gp-Transmission-Part 2 Of 2
7t6754 Pump Gp-Gear-1 Section
6t6147 Pump Gp-Gear-3 Section
6T***47Pump Group-Gear; -Tc, Parking Brake Release1
See all parts with full part numbers in Heavy Parts AI →
6t6148 Pump Gp-Gear-4 Section
6T***48Pump Group-Gear; -Tc, Parking Brake Release1
See all parts with full part numbers in Heavy Parts AI →
3t0259 Pump Gp-Gear
3T***59Pump Group-Gear; -Transmission Charging-Scavenge, Lube1
See all parts with full part numbers in Heavy Parts AI →
3t0260 Pump Gp-Gear-3 Section
3T***60Pump Group-Gear; -Xmsn Charging, Scavenge, Lube1
See all parts with full part numbers in Heavy Parts AI →
6g9360 Rim Gp-Demountable
5t3234 Demountable Rim Gp
8x1926 Rim Gp-Single-Spare
10***06Rim As1
10***17Band-Bead Seat1
2D***08Grommmet1
See all parts with full part numbers in Heavy Parts AI →
8x2342 Rim Gp-Single-Spare
2D***08Grommmet1
3D***85Flange2
5T***93Rim As1
See all parts with full part numbers in Heavy Parts AI →
7t4554 Screen Gp-Magnetic
7T***54Screen Group-Magnetic; -Transmission1
See all parts with full part numbers in Heavy Parts AI →
9w0681 Control Gp-Electronic
9W***81Sensor Group-Position; -Transmission Shift Lever1
See all parts with full part numbers in Heavy Parts AI →
3t0029 Sensor Gp-Electronic Speed
3T***29Sensor Group-Speed; -Transmission Output1
See all parts with full part numbers in Heavy Parts AI →
8x0498 Drive Shaft Gp-Main
5t3231 Drive Shaft Gp-Main
6g9350 Drive Shaft Gp-Pump
8w4451 Drive Shaft Gp
8x0473 Slip Joint Gp
5t4628 Slip Joint Gp
8c5681 Switch Gp-Limit
8C***81Switch As-Limit; -Transmission Neutralizer1
See all parts with full part numbers in Heavy Parts AI →
1t1514 Torque Converter Group-Part 1 Of 2
1t1830 Torque Converter Gp-Part 2 Of 2
1t1954 Torque Converter Gp-Part 1 Of 2
9g5577 Torque Converter Gp*X
6y3944 Torque Converter Gp
1t1830 Torque Converter Gp-Part 1 Of 2
8e9000 Torque Converter Gp-With Clutch*R
1t1514 Torque Converter Group-Part 2 Of 2
1t1954 Torque Converter Gp-Part 2 Of 2
3t0030 Transmission Ar-Powershift*X
3T***29Sensor Group-Speed; -Transmission Output1
3T***30Transmission Ar1
3T***31Gear Group-Transfer; Gear Gp-Transfer-Input1
See all parts with full part numbers in Heavy Parts AI →
3t0034 Transmission Ar*R
3T***29Sensor Group-Speed; -Transmission Output1
3T***33Case & Parts Group-Planetary1
3T***34Transmission Ar1
See all parts with full part numbers in Heavy Parts AI →
5t1010 Universal Gp-Joint
5T***10Universal Joint Group-Pump Drive1
See all parts with full part numbers in Heavy Parts AI →
8w4452 Universal Joint Gp
8W***52Universal Joint Group-Pump Drive1
See all parts with full part numbers in Heavy Parts AI →
3t0289 Valve Gp
6y3942 Lock-Up Clutch & Synchronizing Valve Gp-Part 1 Of 2
6y3942 Lock-Up Clutch & Synchronizing Valve Gp-Part 2 Of 2
2p2859 Valve Gp
2P***59Valve Group-Cooler Inlet; -Transmission Oil Cooler Inlet1
See all parts with full part numbers in Heavy Parts AI →
6y7678 Lock-Up Clutch & Synchronizing Valve Gp-Part 2 Of 2
6Y***78Valve Group-Lockup Clutch & Sync1
See all parts with full part numbers in Heavy Parts AI →
8e6146 Lock-Up Clutch & Synchronizing Valve Gp-Part 1 Of 2
8E***46Valve Group-Lockup Clutch & Sync; -Torque Converter1
See all parts with full part numbers in Heavy Parts AI →
6y7906 Lock-Up Clutch & Synchronizing Valve Gp-Part 2 Of 2
6Y***06Valve Group-Lockup Clutch & Sync; -Torque Converter1
See all parts with full part numbers in Heavy Parts AI →
7t0015 Lock-Up Clutch & Syncrhonizing Valve Gp-Part 1 Of 2
7T***15Valve Group-Lockup Clutch & Sync; (Synchronizing)1
See all parts with full part numbers in Heavy Parts AI →
9w4567 Lock-Up Clutch & Synchronizing Valve Gp-Part 1 Of 2
9W***67Valve Group-Lockup Clutch & Sync1
See all parts with full part numbers in Heavy Parts AI →
7t0015 Lock-Up Clutch & Synchronizing Valve Gp-Part 1 Of 2
7T***15Valve Group-Lockup Clutch & Sync; (Synchronizing)1
See all parts with full part numbers in Heavy Parts AI →
8e6146 Lock-Up Clutch & Synchronizing Valve Gp-Part 2 Of 2
8E***46Valve Group-Lockup Clutch & Sync; -Torque Converter1
See all parts with full part numbers in Heavy Parts AI →
6y7678 Lock-Up Clutch & Synchronizing Valve Gp-Part 1 Of 2
6Y***78Valve Group-Lockup Clutch & Sync1
See all parts with full part numbers in Heavy Parts AI →
6y7906 Lock-Up Clutch & Synchronizing Valve Gp-Part 1 Of 2
6Y***06Valve Group-Lockup Clutch & Sync; -Torque Converter1
See all parts with full part numbers in Heavy Parts AI →
7t0015 Lock-Up Clutch & Synchronizing Valve Gp-Part 2 Of 2
7T***15Valve Group-Lockup Clutch & Sync; (Synchronizing)1
See all parts with full part numbers in Heavy Parts AI →
9w4567 Lock-Up Clutch & Synchronizing Valve Gp-Part 2 Of 2
9W***67Valve Group-Lockup Clutch & Sync1
See all parts with full part numbers in Heavy Parts AI →
6t3340 Lubrication Relief Valve Group
6T***40Valve Group-Lube Relief; -Transmission Hydraulic Control1
See all parts with full part numbers in Heavy Parts AI →
6y4257 Valve Gp-Pressure Control-Part 1 Of 1
6Y***57Valve Group-Pressure Control; -Transmission1
See all parts with full part numbers in Heavy Parts AI →
3t0291 Valve Gp-Pressure Control-Part 1 Of 2
3t0291 Valve Gp-Pressure Control-Part 2 Of 2
9w9670 Valve Gp-Relay
7t0050 Valve Gp-Relay
9u9716 Valve Gp-Relay
9U***16Valve Group-Relay; -Lockup Clutch1
See all parts with full part numbers in Heavy Parts AI →
3p0348 Valve Gp-Relief
3P***48Valve Group-Relief; -Torque Converter Inlet1
See all parts with full part numbers in Heavy Parts AI →
3p0349 Valve Gp-Relief
3t0290 Valve Gp-Selector & Pressure Control-Part 2 Of 2
3T***90Valve Group-Selector & Press Cont; -Transmission Oil1
See all parts with full part numbers in Heavy Parts AI →
3t0290 Valve Gp-Selector & Pressure Control-Part 1 Of 2
3T***90Valve Group-Selector & Press Cont; -Transmission Oil1
See all parts with full part numbers in Heavy Parts AI →
7x1120 Valve Gp-Solenoid
7X***20Valve Group-Solenoid; (Synchronization)1
See all parts with full part numbers in Heavy Parts AI →
6t9290 Valve Gp-Solenoid
6T***90Valve Group-Solenoid; (Lockup Clutch & Syncronizing)1
See all parts with full part numbers in Heavy Parts AI →
6g9345 Wheel Gp-Rear
Service Equipment And Supplies
Name Plates And Films-Part 1 Of 2
1H***50Plate-Notice; On L.H. Front Side Cover & Rear R.H. Cover2
1P***07Film-Symbol; 2 On Bottom Of Upper Frame Below Engine. 2 On Front Of Upper Frame Above Boom Articulation4
3E***05Film-Instruction1
See all parts with full part numbers in Heavy Parts AI →
Name Plates And Films-Part 2 Of 2
6V***60Film-Instruction-On Lower Lh Corner; (Shut Down Control)1
7X***44Film; (Instruction) (Tie Down) (To Front Tie Down Eyes)7
8T***00Film-Instruction1
See all parts with full part numbers in Heavy Parts AI →
Starting And Electrical System
7x6398 Lamp Gp-Dome
3t9343 Switch Gp-Filter By-Pass
3T***43Switch Group-Filter Bypass; -Power Train Oil Filter1
See all parts with full part numbers in Heavy Parts AI →
9g9813 Alarm Gp
9G***13Alarm Group; -Action-Action, Engine Overspeed1
See all parts with full part numbers in Heavy Parts AI →
3e7577 Alternator Gp-Charging*R
8n0999 Alternator Gp*R
5t3207 Control Gp-Air Starting
5T***07Control Group-Air Starting; -Vane, Turbine1
See all parts with full part numbers in Heavy Parts AI →
9x5698 Control Gp-Electronic
3e3777 Control Gp-Electronic
3E***77Control Group-Electronic1
3E***78Control Group-Electronic1
3E***79Film-Identification1
See all parts with full part numbers in Heavy Parts AI →
9x0377 Control Gp-Electronic
9X***77Control Group-Electronic; (Coolant Sensor)1
See all parts with full part numbers in Heavy Parts AI →
8c5542 Control Gp-Electronic
8C***42Control Group-Electronic1
8T***82Control Group-Electronic1
See all parts with full part numbers in Heavy Parts AI →
8t8627 Control Gp-Electronic
6t5618 Control Gp-Electronic
6T***18Control Group-Electronic; -Fire Monitor1
See all parts with full part numbers in Heavy Parts AI →
9x5303 Control Gp-Electronic
7t0290 Control Gp-Electronic
6t5619 Control Gp-Electronic*R
8t8582 Control Gp-Electronic
8w7507 Control Gp-Engine Overspeed
0S***09Bolt (3/4") Filler Tube Assembly To Transfer Drive Case1
2L***64Terminal-Ring; (10-Ga To 12-Ga, No. 6 Screw)(No.6 Screw)1
2L***65Terminal; (10-Ga To 12-Ga)(Relay Switch "C" & "B")2
See all parts with full part numbers in Heavy Parts AI →
9x3207 Control Gp-Electronic
9X***07Control Group-Ether Electronic; (Auto Ether Pull In)1
See all parts with full part numbers in Heavy Parts AI →
9x6847 Control Gp-Electronic
9X***47Control Group-Payload Electronic; -Operator Display1
See all parts with full part numbers in Heavy Parts AI →
9x6846 Control Gp-Electronic
9X***46Control Group-Payload Electronic1
See all parts with full part numbers in Heavy Parts AI →
9x5308 Control Gp
9X***08Control Group-Payload Electronic; -Operator Display1
See all parts with full part numbers in Heavy Parts AI →
8w0712 Converter Gp-Electrical-12 Volt
3t5438 Distributor Gp-Electronic
3T***38Distributor Group-Electronic; -Transmission Speed1
See all parts with full part numbers in Heavy Parts AI →
7w5780 Belt Guard Group
4p3747 Guard Gp-Belt
5t8581 Harness As-Cab-Part 1 Of 2
6g9462 Harness As
8x9861 Harness As
5t8581 Harness As-Cab-Part 2 Of 2
8x0467 Harness As-Actual Gear Indicator
5t8888 Harness As-Chassis
5t8619 Harness As-Wiring
5t8599 Harness As-Instrument Panel
5t8887 Harness As-Sensor
5t8586 Harness As-Wiring
5t8561 Harness As-Wiring-Engine-Part 2 Of 2
5t8598 Harness As-Wiring-Cab
5t8560 Harness Gp-Wiring
5t8559 Harness Gp-Wiring
5t8562 Harness As-Wiring-Part 1 Of 2
5t4403 Harness As-Wiring-Lh Headlamp
5t4647 Harness As-Wiring-Floodlamp Switch
5t8587 Harness As-Wiring
5t8561 Harness As-Wiring-Engine-Part 1 Of 2
5t8562 Harness As-Wiring-Part 2 Of 2
1m1882 Lamp Gp
6n7981 Lamp Gp
5s5147 Lamp Gp-Head
5s5148 Lamp Gp-Head
3t3967 Lamp Gp
3t3968 Lamp Gp
7x6219 Lamp Gp-Stop/Tail
6n7989 Lamp Gp
6N***89Lamp Group-Flood; -Ladder Access1
See all parts with full part numbers in Heavy Parts AI →
8c5582 Lamp Gp-Flood
3t4411 Lamp Gp-Flood
3T***11Lamp Group-Flood; -Hood Light-Ladder1
See all parts with full part numbers in Heavy Parts AI →
8t9684 Lamp Gp
8T***84Lamp Group-Signal; -Payload Monitoring1
See all parts with full part numbers in Heavy Parts AI →
8t9683 Lamp Gp
8T***83Lamp Group-Signal; -Payload Monitoring1
See all parts with full part numbers in Heavy Parts AI →
8w6166 Monitor Ar-Payload
8W***67Wiring Group-Cab1
8W***66Monitor Ar-Payload1
8W***67Sensor & Mounting Group1
See all parts with full part numbers in Heavy Parts AI →
7e4836 Mounting Gp-Alternator
7c0504 Mounting Gp-Alternator
1w5048 Mounting Gp-Alternator
5t7526 Panel Gp-Circuit Breaker
5t8452 Panel Gp-Instrument
5t8453 Panel Gp-Instrument
1029029 Sensor Gp-Speed
10***29Sensor Group-Speed; -Timing-Engine Speed1
See all parts with full part numbers in Heavy Parts AI →
5t3235 Sensor Gp-Electronic Speed
5T***35Sensor Group-Speed; -Wheel Speed1
See all parts with full part numbers in Heavy Parts AI →
5t4841 Shut-Off Gp-Mechanical
5t0880 Starting Aid Gp-Ether
8x4573 Starting Aid Gp-Ether
8w8156 Starting Aid Gp-Ether
8w8366 Ether Aid Gp
2L***71Terminal; (10-Ga To 12-Ga, 1/2-In Screw)(1/2 In Screw)2
3L***87Lockwasher 7.24mm(.285in.)O.D.; (3.7x7.24x.48mm Thk)3
3T***33Control Group-Winch1
See all parts with full part numbers in Heavy Parts AI →
4w6634 Starting Motor Gp-Air-Lh
4W***34Starting Motor Group-Air; -Vane1
See all parts with full part numbers in Heavy Parts AI →
4w5107 Starting Motor Gp-Air
4W***07Starting Motor Group-Air; -Vane1
See all parts with full part numbers in Heavy Parts AI →
4w6633 Starting Motor Gp-Air
4W***33Starting Motor Group-Air; -Vane1
See all parts with full part numbers in Heavy Parts AI →
4w6634 Starting Motor Gp-Air-L.H.
4W***34Starting Motor Group-Air; -Vane1
See all parts with full part numbers in Heavy Parts AI →
7c3372 Starting Motor Gp-Air
7C***72Starting Motor Group-Air; -Vane1
See all parts with full part numbers in Heavy Parts AI →
7n0718 Switch As
7N***18Switch As-Disconnect; -Battery-Ground Level1
See all parts with full part numbers in Heavy Parts AI →
9x7781 Switch Gp-Filter Bypass
9X***81Switch Group-Bypass; -Xmsn Lubrication Supply Filter-Xmsn Lubrication Charge Filter-Hoist Screen-Tc, Front Brake Cooling-Transmission Oil Filter-Rear Axle Oil Filter1
See all parts with full part numbers in Heavy Parts AI →
9x3040 Switch Gp-Flow
1n4647 Switch Gp-Flow
9g7641 Switch Gp
9G***41Switch Group-Start; -Engine, Key-Vims Service1
See all parts with full part numbers in Heavy Parts AI →
7t8619 Valve Gp-Actuator Release
8w4441 Wiring & Lighting Gp-Part 5 Of 6
8w4441 Wiring & Lighting Gp-Part 4 Of 6
8w4441 Wiring & Lighting Gp-Part 1 Of 6
5t3222 Wiring & Lighting Gp-Part 6 Of 6
8w4441 Wiring & Lighting Gp-Part 6 Of 6
8w4441 Wiring & Lighting Gp-Part 3 Of 6
5t3222 Wiring & Lighting Gp-Part 4 Of 6
5t3222 Wiring & Lighting Gp-Part 1 Of 6
5t3222 Wiring & Lighting Gp-Part 3 Of 6
8w4441 Wiring & Lighting Gp-Part 2 Of 6
5t3222 Wiring & Lighting Gp-Part 5 Of 6
5t3222 Wiring & Lighting Gp-Part 2 Of 6
8w0584 Wiring Gp-Cab-Part 1 Of 5
8w0584 Wiring Gp-Cab-Part 5 Of 5
8w0584 Wiring Gp-Cab-Part 4 Of 5
8w4767 Wiring Gp-Cab-Part 2 Of 2
8w0584 Wiring Gp-Cab-Part 2 Of 5
8w0584 Wiring Gp-Cab-Part 2 Of 4
8w3347 Wiring Gp-Cab-Part 1 Of 2
5t6551 Wiring Gp-Cab-Part 5 Of 5
8w0584 Wiring Gp-Cab-Part 1 Of 4
8w0584 Wiring Gp-Cab-Part 3 Of 5
8w4767 Wiring Gp-Cab-Part 1 Of 2
5t6551 Wiring Gp-Cab-Part 2 Of 5
8w0584 Wiring Gp-Cab-Part 3 Of 4
5t6551 Wiring Gp-Cab-Part 4 Of 5
8w3347 Wiring Gp-Cab-Part 2 Of 2
5t6551 Wiring Gp-Cab-Part 1 Of 5
8w0584 Wiring Gp-Cab-Part 4 Of 4
5t6551 Wiring Gp-Cab-Part 3 Of 5
5t3236 Wiring Gp-Sensor
8w6168 Wiring Gp-Sensor
8w5196 Wiring Gp-Sensor
Steering And Braking System
2g5900 Slack Adjuster Gp-Front
2g6535 Slack Adjuster Gp-Front
2G***35Slack Adjuster Group; -Front Service Brake Lines1
See all parts with full part numbers in Heavy Parts AI →
6g9881 Slack Adjuster Gp-Rear
6G***81Slack Adjuster Group; -Pulled Unit Brakes1
See all parts with full part numbers in Heavy Parts AI →
5t0917 Air Dryer Gp
6g9385 Brake Gp-Service-Rear-Part 2 Of 2
6G***85Brake Group-Service; -Tractor Rear-Rear1
See all parts with full part numbers in Heavy Parts AI →
6g9385 Brake Gp-Service-Rear-Part 1 Of 2
6G***85Brake Group-Service; -Tractor Rear-Rear1
See all parts with full part numbers in Heavy Parts AI →
5t3280 Brake Gp-Service-Front-Part 1 Of 2
5T***80Brake Group-Service & Parking; -Front1
See all parts with full part numbers in Heavy Parts AI →
5t3280 Brake Gp-Service-Front-Part 2 Of 2
5T***80Brake Group-Service & Parking; -Front1
See all parts with full part numbers in Heavy Parts AI →
5t3280 Brake Gp-Service- Front-Part 2 Of 2
5T***80Brake Group-Service & Parking; -Front1
See all parts with full part numbers in Heavy Parts AI →
8x9702 Brake Gp-Service & Parking
0S***20Bolt--Customer Grounding Bolt6
0S***25Bolt, Hex. Hd., 5/8"-11 N.C. X 2 1/2"35
10***09Anchor-Brake1
See all parts with full part numbers in Heavy Parts AI →
8x9717 Brake Gp-Service & Parking-Part 2 Of 2
12***69Seal-Ring (517mm Id)1
12***73Seal-Ring; Seal-Ring (606.58mm Id)1
12***74Seal-Ring (768.4mm Id)1
See all parts with full part numbers in Heavy Parts AI →
8x9717 Brake Gp-Service & Parking-Part 1 Of 2
0S***20Bolt--Customer Grounding Bolt6
10***04Housing1
10***06Anchor-Brake1
See all parts with full part numbers in Heavy Parts AI →
5t3280 Brake Gp-Service-Front Part 1 Of 2
5T***80Brake Group-Service & Parking; -Front1
See all parts with full part numbers in Heavy Parts AI →
8w4438 Control Gp-Brake-Part 2 Of 2
5t6544 Control Gp-Brake
5T***44Control Group-Brake; -Cab-Parking Brake1
See all parts with full part numbers in Heavy Parts AI →
8w4438 Control Gp-Brake-Part 1 Of 2
5t0851 Control Gp-Service Brake-Part 1 Of 3
5t0851 Control Gp-Service Brake-Part 3 Of 3
5t0851 Control Gp-Service Brake-Part 2 Of 3
5t3208 Control Gp-Brake-Part 1 Of 2
5t3208 Control Gp-Brake-Part 2 Of 2
9t7204 Cylinder Gp-Air
9T***04Cylinder Group-Air; -Parking, Secondary Brake-Tc, Front Brake Cooling1
See all parts with full part numbers in Heavy Parts AI →
8w3406 Cylinder Gp-Air Hydraulic
8W***06Cylinder Group-Air/Hydraulic; -Front Brake-Tractor Rear Brake-Pulled Unit Brake1
See all parts with full part numbers in Heavy Parts AI →
8x7220 Cylinder Gp-Air Over Hydraulic
8X***20Cylinder Group-Air/Hydraulic; -Front Brake-Tractor Rear Brake-Pulled Unit Brake1
See all parts with full part numbers in Heavy Parts AI →
9j1255 Cylinder Gp-Brake
6p4603 Filter Gp-Transmission Oil
6P***03Filter Group-Oil; -Park Brake Release, Xmsn-Parking Brake Release-Rear Brakes1
See all parts with full part numbers in Heavy Parts AI →
8w4443 Lines Gp-Brake-Part 1 Of 2
8w4443 Lines Gp-Brake-Part 2 Of 2
5t3225 Lines Gp-Hydraulic Oil Cooler-Part 1 Of 5
5T***25Lines Group-Hydraulic Oil Cooler1
See all parts with full part numbers in Heavy Parts AI →
5t3225 Lines Gp-Hydraulic Oil Cooler-Part 2 Of 5
5T***25Lines Group-Hydraulic Oil Cooler1
See all parts with full part numbers in Heavy Parts AI →
5t3225 Lines Gp-Hydraulic Oil Cooler-Part 4 Of 5
5T***25Lines Group-Hydraulic Oil Cooler1
See all parts with full part numbers in Heavy Parts AI →
5t3225 Lines Gp-Hydraulic Oil Cooler-Part 5 Of 5
5T***25Lines Group-Hydraulic Oil Cooler1
See all parts with full part numbers in Heavy Parts AI →
5t3225 Lines Gp-Hydraulic Oil Cooler-Part 3 Of 5
5T***25Lines Group-Hydraulic Oil Cooler1
See all parts with full part numbers in Heavy Parts AI →
8w4446 Lines Gp-Oil Cooler-Part 1 Of 3
8W***46Lines Group-Oil Cooler; -Tc, Front, Rear Brake1
See all parts with full part numbers in Heavy Parts AI →
8w4446 Lines Gp-Oil Cooler-Part 3 Of 3
8W***46Lines Group-Oil Cooler; -Tc, Front, Rear Brake1
See all parts with full part numbers in Heavy Parts AI →
8w4446 Lines Gp-Oil Cooler-Part 2 Of 3
8W***46Lines Group-Oil Cooler; -Tc, Front, Rear Brake1
See all parts with full part numbers in Heavy Parts AI →
5t3223 Lines Gp-Service Brake-Front-Part 4 Of 4
5t0866 Lines Gp-Service Brake-Rear-Part 2 Of 3
5t3223 Lines Gp-Service Brake-Front-Part 2 Of 4
5t0866 Lines Gp-Service Brake-Part 1 Of 3
5t0866 Lines Gp-Service Brake-Part 2 Of 3
8w4442 Lines Gp-Front Brake-Part 1 Of 3
8W***42Lines Group-Service Brake; -Front1
See all parts with full part numbers in Heavy Parts AI →
5t0866 Lines Gp-Service Brake-Part 3 Of 3
8w4442 Lines Gp-Front Brake-Part 2 Of 3
8W***42Lines Group-Service Brake; -Front1
See all parts with full part numbers in Heavy Parts AI →
5t0866 Lines Gp-Service Brake-Rear-Part 1 Of 3
5t0866 Lines Gp-Service Brake-Rear-Part 3 Of 3
5t3223 Lines Gp-Service Brake-Front-Part 1 Of 4
8w4442 Lines Gp-Front Brake-Part 3 Of 3
8W***42Lines Group-Service Brake; -Front1
See all parts with full part numbers in Heavy Parts AI →
5t3223 Lines Gp-Service Brake-Front-Part 3 Of 4
5t3228 Lines Gp-Steering Oil-Part 3 Of 4
8w4449 Lines Gp-Steering Oil-Part 2 Of 3
8w4449 Lines Gp-Steering Oil-Part 3 Of 3
5t3228 Lines Gp-Steering Oil-Part 4 Of 4
5t3228 Lines Gp-Steering Oil-Part 2 Of 4
8w4449 Lines Gp-Steering-Part 3 Of 3
8w4449 Lines Gp-Steering-Part 2 Of 3
5t3228 Lines Gp-Steering Oil-Part 1 Of 4
8w4449 Lines Gp-Steering Oil-Part 1 Of 3
8w4449 Lines Gp-Steering-Part 1 Of 3
5t8700 Link Group
6g9260 Linkage Gp-Steering
7t6517 Valve & Mounting Gp
7T***17Manifold Group-Control; (Solenoid)1
See all parts with full part numbers in Heavy Parts AI →
5t0912 Mounting & Pump Gp-Steering
5t1060 Pump Gp-Electric Drive
5T***60Pump Group-Electric Drive; -Parking, Secondary1
See all parts with full part numbers in Heavy Parts AI →
9t4247 Pump Gp-Metering
9T***47Pump Group-Metering; -Hmu-Steering1
See all parts with full part numbers in Heavy Parts AI →
4t0382 Pump Gp-Piston-Slipper
9j1791 Rotochamber Gp
6e1349 Screen Gp
6E***49Screen Group; -Tc, Front Brake Cooling1
See all parts with full part numbers in Heavy Parts AI →
5t7629 Gear Gp-Steering
5t0861 Tank Gp-Air
5t0885 Tank Gp-Air
5T***85Tank Group-Air; -Chassis-Air Tank1
See all parts with full part numbers in Heavy Parts AI →
8x0366 Tank Gp-Brake
1S***94Clip-R.H. Side Engine Support7
1S***15Conduit Clip (Use As Required)1
3J***07Seal Valve Assembly To; Seal- Tube Assembly To Logic Valve1
See all parts with full part numbers in Heavy Parts AI →
8w9690 Tank Gp-Service Brake
8W***90Tank Group-Brake; Tank Gp-Service Brake1
See all parts with full part numbers in Heavy Parts AI →
7d8075 Valve As
4d0487 Valve As-Check
4D***87Valve As-Check; -Air Supply-Primary Air Tank-Service Brake Control1
See all parts with full part numbers in Heavy Parts AI →
9d3886 Valve Gp-Air Control
9D***86Valve Group-Air Control; -Manual Retarder1
See all parts with full part numbers in Heavy Parts AI →
4d3278 Valve Gp-Air Control
4D***78Valve Group-Air Control; -Parking Brake Switch1
See all parts with full part numbers in Heavy Parts AI →
9d8097 Valve Gp-Control
9D***97Valve Group-Air Control; -Service Brake1
See all parts with full part numbers in Heavy Parts AI →
9d8098 Valve Gp-Air Control
9D***98Valve Group-Air Control; -Secondary Brake1
See all parts with full part numbers in Heavy Parts AI →
1u2646 Valve Gp-Brake
9t2174 Valve Gp-Brake
9t4772 Valve Gp-Brake
9T***72Valve Group-Brake; -Parking, Secondary Brake1
See all parts with full part numbers in Heavy Parts AI →
6d3781 Valve Group-Double Check
6D***81Valve Group-Check; -Service Brake Diverter-Retarder Control1
See all parts with full part numbers in Heavy Parts AI →
1u2644 Valve Gp-Check
1U***44Valve Group-Check; -Secondary, Parking Brake1
See all parts with full part numbers in Heavy Parts AI →
9t7205 Valve Gp-Diverter
9T***05Valve Group-Diverter; -Tc, Front Brake Cooling1
See all parts with full part numbers in Heavy Parts AI →
4t4178 Valve Gp-Diverter
9t7095 Valve Gp-Pressure Compensator
9T***95Valve Group-Pressure Compensator; -Piston Pump, Steering1
See all parts with full part numbers in Heavy Parts AI →
3g4667 Valve Gp-Relief
3G***67Valve Group-Relief; -Steering Cylinder Crossover1
See all parts with full part numbers in Heavy Parts AI →
3g4638 Valve Gp-Relief
9t4770 Valve Gp-Relief
9T***70Valve Group-Relief; -Parking, Secondary Brake1
See all parts with full part numbers in Heavy Parts AI →
4t2742 Valve Gp-Relief
4T***42Valve Group-Relief; -Secondary Steering1
See all parts with full part numbers in Heavy Parts AI →
1u2638 Valve Gp-Relief
6t8046 Valve Gp-Solenoid
6T***46Valve Group-Solenoid; (Axle Oil Cooler)1
See all parts with full part numbers in Heavy Parts AI →
6e6298 Valve Gp-Solenoid & Relief
6E***98Valve Group-Solenoid & Relief; -Steering-Accumulator1
See all parts with full part numbers in Heavy Parts AI →

785 serial number reference

The serial/PIN plate is riveted to the truck frame, usually on the left front frame rail near the cab, with the number often also stamped into the frame steel as a backup. The original 785 predates Cat's 17-character PIN system, so its plate shows the older 8-character format: a 3-character alphanumeric prefix that ties to a specific production block, followed by a 5-digit sequential unit number. Read the prefix off the plate and match it against 785 (not 785B/C/D) parts or service literature to confirm which production block a given truck falls in.

PrefixIdentifies
8GBOriginal 785 (pre-785B), earliest documented production block
M85Original 785 (pre-785B), later production block
SMTOriginal 785 (pre-785B), later production block
ZSBOriginal 785 (pre-785B), later production block
R2ROriginal 785 (pre-785B), later production block
W5DOriginal 785 (pre-785B), later production block

Frequently asked questions

What engine powers the Caterpillar 785?

The original Cat 785 mining truck runs a Cat 3512 V12 mechanical diesel engine with a PEEC electronic governor, not a full engine ECM. It is rated at approximately 1029 kW (1380 hp) gross, displaces 51.8 L, and pairs with a six-speed torque-converter powershift transmission. Later 785B/C/D generations moved to electronically controlled 3512 variants.

What is the operating weight of the Caterpillar 785?

Empty weight is about 96 t (212,400 lb), with a gross weight near 249 t (550,000 lb) at its rated payload of roughly 136 t (300,000 lb). Actual figures vary by dump-body option and configuration, so check the plate for your specific unit.

What replaced the Caterpillar 785?

Caterpillar replaced the original 785 with the 785B, which was followed by the 785C (electronically controlled 3512B EUI engine) and then the 785D (3512C HD engine, larger X-body option). Each generation kept the same payload class while updating the engine and body program.

What 785 owners discuss

How reliable is the engine on the original mechanical-governed 785, and what do mechanics watch for?
The early 785 runs the mechanically governed 3512, no engine control module, fuel delivery set by a mechanical governor and injection pump/injector train rather than electronics. Consensus among techs who work on this generation: the engine is simple and tough if fuel system upkeep and oil sampling stay current. The risk is a failing injector or injection pump on one cylinder washing fuel past the rings and diluting the crankcase oil before anyone notices a power complaint, because there is no fault code to flag it early. Catch it by routine oil sampling and by listening for a rough or knocking cylinder, not by waiting for a warning light.
What should I expect from the transmission and torque converter on the early 785?
Original 785 uses a power shift transmission driven through a torque converter, with mechanical/hydraulic shift control. It predates the electronic clutch-pressure control refinements added on later 785 generations, so there is less to diagnose electronically but also less protection against operator abuse. Recommended practice from the field: downshift proactively on grade instead of letting the converter slip and build heat, and keep transmission/converter oil temperature and condition on a regular sampling schedule. Chronic lugging or riding the converter is the most commonly cited cause of early clutch pack wear on this type of driveline.
This is a rigid-frame haul truck, not a dozer or loader — where does the real wear show up instead of undercarriage wear?
No track or undercarriage wear to worry about. On this class of truck the wear concentrates in the tires, the wheel group (wheel motors/final drives), and the suspension (strut) cylinders. Uneven or rapid tire wear usually traces back to haul road condition, speed, or a wheel-end alignment/bearing issue rather than the tire itself. Final drives need regular oil sampling and level checks. Struts should be checked for external oil leaks and correct charge, since a soft or leaking strut changes ride height on that corner and loads the frame unevenly over time. Have a qualified tech verify wheel-end and strut condition rather than judging by eye alone — both affect steering and load stability.
Compared to the later electronic 785 generations, what electrical quirks come with the original truck?
The early 785 predates the onboard electronic monitoring system added to later generations. It relies on analog gauges, warning lights, and simple switch-type senders for temperature and pressure rather than a network of electronic sensors. Fewer sensors means fewer nuisance electronic faults, but on a machine this age the senders and wiring insulation degrade from mine-site dust, heat, and vibration. A bad sending unit can mimic a real mechanical problem — for example a false low-pressure or high-temperature gauge reading. Standard advice: confirm a gauge complaint with a manual test gauge before condemning the actual component underneath it.
What hydraulic behavior is typical for the hoist and steering circuits on this generation?
Hoist and steering are engine-driven hydraulic circuits without the fine electronic diagnostics of later trucks, so problems tend to show up as a symptom rather than a code: a slower dump cycle, or steering that feels soft or wanders. The most commonly cited root cause on equipment of this age and duty cycle is contamination — a dirty tank breather or overdue filter lets abrasive dust into the pump and valves before anyone notices a leak. Check filter condition and oil cleanliness first when cycle times slow down or steering feel changes. Because steering integrity is safety critical, have a hydraulics tech verify pump output pressure and flow if the problem persists after a service.
What should I check on the frame and dump body of an older 785 before trusting it?
The 785 frame is a welded box-section design meant to be rebuilt rather than replaced, but stress concentrates at known points — the main rails near cross-member junctions and around the hoist pivot/hinge area. Look for cracks, non-factory weld repairs, or shims used to correct a bent section. On the dump body, check the liner for wear-through and check hinge pins for looseness. A frame crack or prior repair is a structural, safety-critical finding — have a qualified structural inspection done (dealer or certified inspector) before the truck goes back into service, and do not rely on a visual walk-around alone.
What's the practical checklist for buying a used original (mechanical-engine) 785 rather than a later 785B/C/D?
Documented owner discussion specific to this exact vintage is limited online; the following reflects established practice for mechanically governed Cat mining trucks of this era rather than a single write-up. First, confirm what engine is actually in the truck — the original mechanically governed 3512 with no engine control module is the pre-electronic configuration; a rebuild sourced from a later generation can bring mismatched drivetrain parts, so verify fitment with your dealer before ordering anything. Second, ask for both frame hours and rebuilt-component hours separately, since the engine, transmission/converter, and wheel groups are often rebuilt on their own schedule independent of chassis hours. Third, pull whatever oil sampling history exists for engine, transmission, and final drives. Fourth, physically inspect tires/wheel groups, strut cylinders for leaks, and the frame for cracks or repairs as described above. Given the age of this configuration, budget for a full dealer inspection rather than relying on a seller's condition report.

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

Serial-range & configuration variants

This page covers the Caterpillar 785. Related factory variants of the same model family:

785

Need a specific 785 part?

Search live OEM part data, check fitment, and cross-reference alternatives with Heavy Parts AI.