Caterpillar MT835
Caterpillarchallenger

Caterpillar MT835

Maintenance schedule, common problems & OEM parts breakdown

The Caterpillar Challenger MT835 is a rubber-belted, track-type row-crop tractor built for high-horsepower tillage, seeding, and grain-cart work. This original generation runs a Caterpillar C12 11.9L turbocharged diesel rated at a gross 340 hp (253 kW), paired with a 16-speed powershift transmission and Caterpillar's rubber Mobil-trac belt undercarriage in place of steel tracks or wheels. Standard fuel capacity is 1154.4 L (305 US gal), with a 1249.0 L (330 US gal) tank offered as an option, and the closed-center, load-sensing hydraulic system holds roughly 264.9 L (70 US gal) at up to 200 bar (2900 psi). Operating weight lands around 18,140 kg (40,000 lb), varying with ballast and configuration. Built from 2002 to 2004 under BAM-prefix serial numbers, the MT835 was among the first Challenger track tractors produced after AGCO acquired Caterpillar's Challenger ag-tractor business in 2002, effectively continuing the high-horsepower, C12-powered role Cat's own DeKalb-built Challenger 75-series tractors had filled, with Caterpillar staying on as long-term supplier of the engine, drivetrain, and Mobil-trac belt system. It was offered with a cab and standard air conditioning, and in more than one belt-width configuration for different row-crop and tillage setups.

AGCO retired the original C12-powered MT835 in 2005 in favor of the MT835B, which reuses the same model number but switches to a larger Caterpillar C15 ACERT 15.2L engine rated near 350 hp and updated electronics. A further MT835C generation followed from 2009 to 2013 with a 410 hp C15 ACERT engine and its own control system. Those later tractors share the MT835 badge but not the engine, fuel system, or electronics of the 2002-2004 original, so parts and service data do not cross over cleanly between generations. For buyers today, the original C12 MT835 sits in the used market as a comparatively simple, pre-emissions-era track tractor with no exhaust aftertreatment to maintain, mechanically more straightforward than the ACERT-generation machines that followed it. Its age puts undercarriage belts, midwheels, and hydraulic components among the parts most commonly sourced for these tractors now, and confirming the BAM serial prefix is the fastest way to verify a listing is the original C12 tractor rather than a later B- or C-series machine wearing the same MT835 name.

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 MT835 specifications

Engine

EngineCaterpillar C12 turbocharged diesel, 11.9 L (729 cu in), 6-cylinder, bore x stroke 130 x 150 mm (5.118 x 5.906 in), compression ratio 16.0:1
PowerGross 254 kW (340 hp) at 2100 rpm. PTO claimed 205 kW (275 hp); PTO as tested 267 kW (357.9 hp), per Nebraska/OECD tractor test data
Emissions tierNot documented in available spec sources for this build era - verify with your dealer

Weights

Shipping/operating weight18,144 kg (40,000 lb) base shipping weight; up to 22,680 kg (50,000 lb) ballasted; maximum rated gross machine weight 27,216 kg (60,000 lb)
Ground pressureNot published in available spec sheets for this model - verify with your dealer

Dimensions

Overall length675 cm (265.9 in)
Overall width357-360 cm (140.9-142.1 in), varies by track width fitted
Height to cab roof350 cm (138.1 in) to cab roof; 352 cm (138.7 in) to exhaust stack
Wheelbase299 cm (118 in)
Ground clearance47 cm (18.7 in)
Track gauge (center-to-center)228-325 cm (90-128 in) adjustable
Track width46 cm (18 in) standard; wider belts offered as an option up to 91 cm (36 in)

Performance

Transmission16 forward / 4 reverse full powershift
Rear PTO1000 rpm, independent rear PTO
SteeringHydrostatic power steering
Drawbar power (as tested)196 kW (263.3 hp), per Nebraska/OECD tractor test data
3-point hitchCategory III/IVN, rated lift capacity 8845 kg (19,500 lb)

Service capacities (summary)

Fuel tank1154.4 L (305 gal) standard; 1249.0 L (330 gal) optional larger tank
Hydraulic systemClosed-center, load-sensing/pressure-flow-compensated system; reservoir capacity 264.9 L (70 gal)
Hydraulic pump flow165 L/min (43.5 gpm) standard, 223 L/min (59 gpm) optional high-flow pump, system relief pressure 200 bar (2900 psi)
Engine oil capacityNot documented in available spec sources for this model - verify with dealer or the Cat C12 service manual
Cooling system capacityNot documented in available spec sources 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.

MT835 fluids & capacities

SystemCapacityRecommended fluid
Engine crankcase, with oil filter (Cat C12, 11.9 L turbocharged diesel)Approx. 34-38 L (9-10 US gal) engine lube system total; exact ag-chassis sump figure not separately published for this model — confirm against dealer service chart before drainingCat DEO (Diesel Engine Oil), SAE 15W-40 for above-freezing climates; Cat DEO SYN or 10W-30 multigrade for cold starts below 0°C (32°F)
Cooling systemNot published in available documentation for this model — total system volume (block, radiator, degas tank) not confirmed; verify with dealer or OMM cooling sectionCat ELC (Extended Life Coolant) or Cat DEAC antifreeze/coolant, pre-mixed 50/50 water-glycol, year-round formulation
Fuel tank1154.4 L (305 US gal) standard tank; 1249.0 L (330 US gal) optional large tankNo. 2-D diesel fuel meeting Cat diesel fuel specification
Transmission / powertrain compartment (16-speed powershift, hydrostatic steer)Not separately published. Transmission/drivetrain lubrication draws from its own reservoir apart from the implement-hydraulic tank; no liter figure confirmed in available excerptsCat TDTO (Transmission/Drive Train Oil), multi-viscosity, standard factory-fill for powershift and final-drive compartments of this generation
Final drives / track drive sprockets, each sideNot published in available excerpts. Each final-drive and bogie-wheel housing is individually oil-filled per the undercarriage lubrication chart; no per-side figure confirmedCat TDTO, same drive-train oil spec used in the transmission compartment
Hydraulic system (implement hydraulics) and tank264.9 L (70 US gal) total system capacity. System pressure 200 bar (2900 psi). Standard pump flow 164.6 L/min (43.5 gpm); optional high-flow pump 223.3 L/min (59 gpm)Cat HYDO (Hydraulic Oil), multi-viscosity formulation for wide ambient temperature range; some circuits may share Cat TDTO where the OMM specifies a common drivetrain/hydraulic fluid
Grease points (chassis, pivots, track rollers) — spec onlyN/A — serviced per lubrication interval chart, no reservoir capacityCat Multipurpose Grease (NLGI Grade 2 lithium-complex EP) or Cat Advanced 3Moly Grease for high-load undercarriage points

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

Caterpillar MT835 maintenance schedule

Service intervalTasks
Every 10 h
  • Walk around the machine before startup and check for fluid leaks, loose fasteners, and belt or track damage.
  • Check engine oil level and coolant level.
  • Check hydraulic oil level at the sight gauge.
  • Drain water and sediment from the fuel/water separator.
  • Clean radiator and cooling-package screens of chaff and debris, and inspect the Mobil-trac belt for cuts or embedded material (weekly) — no scheduled grease points exist on the undercarriage itself.
Every 250 h
  • Pull an engine oil sample for analysis ahead of the next drain interval.
  • Check and adjust fan and alternator belt tension.
  • Clean or replace the cab pressurizer air filter element.
  • Check battery terminals, cable connections, and electrolyte level.
  • Check transmission/hydraulic oil level and pull a sample.
  • Check Mobil-trac belt alignment and tracking against factory spec.
Every 500 h
  • Change engine oil and the engine oil filter.
  • Replace primary and secondary fuel filters and the water separator element.
  • Check final drive oil level on each side.
  • Perform the scheduled valve lash check/adjustment on the C12.
  • Inspect and lubricate steering-clutch/brake linkage and hitch/PTO linkage as equipped.
  • Re-torque belt guide-block hardware if flagged during the last tracking check.
Every 1,000 h
  • Change the hydraulic/transmission system oil filter.
  • Sample transmission and final drive oil for wear metals.
  • Replace the primary engine air filter element, or sooner if the restriction indicator triggers.
  • Check and adjust engine valve lash.
  • Inspect the turbocharger for shaft play and boost leaks.
  • Inspect midwheels, idlers, and drive sprockets for wear.
Every 2,000 h
  • Change transmission/hydraulic system oil.
  • Change final drive oil on both sides.
  • Replace the secondary (safety) air filter element.
  • Recheck and adjust engine valve lash.
  • Inspect fuel injectors and recondition or replace any underperforming units.
  • Inspect the Mobil-trac belt carcass for exposed steel cable or delamination and plan replacement if worn.
Every 3,000 h
  • Drain and replace engine coolant on a 2-3 year/3000-hour cycle unless the machine carries factory extended-life coolant.
  • Have the cooling system pressure-tested and the radiator core cleaned internally.
  • Inspect wiring harness and grounds near the engine and transmission for chafing.
  • Check ROPS/cab mounts and seat suspension for wear.
Every 6,000 h
  • Evaluate the C12 for an inframe or top-end overhaul based on oil-sample trends and compression check.
  • Inspect the 16-speed powershift clutch packs and final drives for rebuild given cumulative high-load shift cycles.
  • Replace worn Mobil-trac belts, midwheels, and idlers as a set to keep the undercarriage tracking true.
  • Rebuild or replace the hydraulic pump and steering/brake valves if flow or pressure has dropped from spec.

Servicing the MT835 beyond the schedule

Predictive Maintenance & Fluid Analysis

Run oil sampling on the C12 engine, 16-speed powershift, and final drives at every scheduled interval. This non-ACERT C12 has no exhaust aftertreatment to mask early wear, so oil trends give the clearest early warning of injector, turbocharger, or clutch-pack problems. Track coolant condition and fuel-filter restriction closely, since these tractors are now decades old and cooling and fuel systems accumulate scale and varnish over time. Log Mobil-trac belt tension and midwheel temperature during hot-weather work; uneven wear patterns predict belt or roller failure before it strands the tractor mid-field.

Corrective & Common Repairs

On a tractor this age, expect the C12's fuel injectors, turbocharger, and water pump to be the highest-wear failure points; smoke, power loss, or coolant weep at these components is common at high hours. On the drivetrain, powershift clutch packs and steering-brake linkages wear under heavy tillage duty and show up as slipping shifts or drift under load. Undercarriage repairs center on the Mobil-trac belt, midwheels, and front idler, where belt cracking, exposed steel cable, and midwheel play are the most frequently reported field complaints on this generation.

Overhaul & Rebuild Points

A full C12 inframe overhaul is the major rebuild point on a high-hour MT835, usually triggered by falling compression or rising oil consumption rather than a fixed hour mark. The 16-speed powershift and final drives are the next-largest rebuild items, since clutch packs and planetary gearing see constant load reversals during track-tractor tillage work. On the chassis side, complete Mobil-trac belt, midwheel, and idler replacement is normally done as a set to keep the undercarriage tracking straight, rather than piecemeal, once wear shows through the belt's internal steel-cable layers.

Seasonal & Environment Servicing

Ahead of planting or harvest, recheck Mobil-trac belt tension and alignment, since temperature swings shift rubber belt tension more than a steel track. In cold climates, run the correct oil viscosity for the C12, confirm glow/starting-aid function before cold starts, and set coolant freeze protection to factory dilution rather than guessing. In dusty tillage or harvest conditions, service the primary and secondary engine air filters more often than the standard interval and inspect the cab pressurizer filter, since a plugged filter is a common reported cause of power loss on these tractors.

MT835 common service parts

Part numberPart
1R-0762Filter As-FuelCheck fitment →
161-1705Sensor As-PressureCheck fitment →
111-2645Valve-Pump BypassCheck fitment →
1R-0716Filter As-Engine OilCheck fitment →
9S-8752Nut-FullCheck fitment →

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

MT835 fault codes & troubleshooting

CodeMeaningLikely causeWhat to do
E100Engine oil pressure faultOil pressure sensor reading out of range, or genuine low pressure from low oil level, worn pump, or a restricted pickup screenShut the engine down, check oil level and top off with the correct grade, look for leaks; if the level is correct suspect the sensor or wiring before restarting
E102Turbo boost / intake manifold pressure faultRestricted or dirty air filter, a collapsed or leaking charge-air hose, or a failing turbochargerInspect the air filter element and intake piping for restriction or leaks, clean or replace the filter, reseat hose clamps, then clear the code and recheck under load
E107Air filter restriction (intake air pressure) faultAir filter element loaded with dust or debris, or a collapsed intake hoseService or replace the air filter element, check the restriction indicator, and inspect the intake ducting for damage
E110Engine coolant temperature fault (overheat or sensor fault)Low coolant level, plugged radiator fins or screens, a weak fan drive, or a failed coolant temperature sensorLet the engine cool, check coolant level and mix, clean the radiator and screens of debris, and verify fan operation before returning to service
E94Fuel filter / fuel pressure restriction faultLoaded fuel filter element, water or debris in the fuel, or a weak lift/primer pumpCheck fuel level, drain the fuel/water separator, replace the fuel filter, and check the primer pump fuse before further diagnosis
E97Water detected in fuelCondensation or contaminated fuel collecting in the water separator bowlDrain the fuel/water separator, check the fuel supply source for contamination, and replace the fuel filter if water keeps returning
E168Battery / charging system voltage fault (high or low)Loose or corroded battery terminals, a failing alternator or regulator, or a weak batteryCheck and clean battery terminal connections, test charging voltage at idle and at rated rpm, and load-test the battery
D149 / D150CAN data-bus communication signal fault between the cab display and machine control modulesIntermittent harness connection, corroded connector pins, or a control module dropping off the data linkCycle the key off for several seconds to reset the bus, check main harness connectors for corrosion, and check module grounds before deeper diagnosis
T4128Transmission control unit faultInternal TCU fault or lost communication with a transmission speed sensor or shift solenoid, dropping the gearbox into a protective modeNote the conditions when the fault set, cycle the key to see if it clears, and have the transmission control unit and its wiring checked if the fault returns or the transmission stays in protection mode

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

MT835 attachments & work tools

Drawbar systems

Standard wide-swinging roller drawbar (Category 5) swings about ±32° and carries roughly 4990-6804 kg (11,000-15,000 lb) vertical load depending on source. A free-swinging drawbar pairing with the 3-point hitch swings about ±28°. An optional hydraulic-controlled drawbar lets the operator position or dampen it from the cab and carries up to about 6804 kg (15,000 lb).

Three-point hitch

Optional rear 3-point hitch is offered in standard and high-capacity form; standard lift is around 6804 kg (15,000 lb) and the high-capacity version around 9072 kg (20,000 lb), with one steerable version cited near 8845 kg (19,500 lb) - capacity varies by configuration/series. The steerable design ties into the tractor's steering to tighten headland turns under draft load.

PTO

Optional independent rear PTO runs at 1000 rpm on a 44 mm (1.75 in) shaft. It is engaged and monitored from the same cab display used for the transmission, hydraulics, and hitch.

Hydraulic remote kit

Closed-center, load-sensing hydraulic system with roughly 265 L (70 US gal) reservoir capacity. Standard single-pump flow is about 165 L/min (43.5 gpm) feeding 4 rear remote valves; an optional higher-flow pump raises flow to about 223 L/min (59 gpm) and adds up to 6 remote valves total. Quick-hitch couplers come standard for fast implement hookup.

Track/undercarriage

Rubber Mobil-Trac belts are the standard undercarriage for this size class, with 457 mm (18 in) width the common factory fit. Wider and narrower belt widths are offered across the model family for different soil and flotation needs; replacement belts for this platform are sourced through the rubber-track aftermarket.

Ballast and weight kits

Front-mounted and chassis ballast weight kits are available to rebalance the tractor, improve headland handling, and increase drawbar pull with heavier pulled implements.

Factory configuration options

Cab comes standard with air conditioning, heat, and ROPS protection. Factory upgrades for heavier draft work include a larger fuel tank (about 1249 L / 330 gal versus the standard 1154 L / 305 gal) and the higher-flow hydraulic pump noted above.

All MT835 assemblies by section

Every catalogued assembly group for the Caterpillar MT835. Open an assembly to preview the parts inside — full OEM part numbers are available in Heavy Parts AI.

Air Inlet And Exhaust System
205-1231 Elbow Gp-Air Inlet
0S***88Bolt,Machine; Hose Assembly Mounting,Hose Assembly To Transmission,And To Torque Converter4
10***25Gasket; (Air Inlet Manifold)(Intake Manifold Inlet)1
10***03Elbow; (Air Inlet)1
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205-1232 Elbow Gp-Air Inlet
10***25Gasket; (Air Inlet Manifold)(Intake Manifold Inlet)1
10***03Elbow; (Air Inlet)1
20***32Elbow Group-Air Inlet1
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114-1904 Lines Gp-Air
0S***94Bolt (1 In. Long 3/8 In. Dia.); Plate Assembly To Support Assembly2
11***04Lines Group-Air1
5H***04Packing,Preformed Elbow Part Of Kit P/N 5r***262
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126-0076 Lines Gp-Air -Turbocharger Outlet
12***73Elbow1
12***76Lines Group-Air; -Turbocharger Outlet1
12***29Clamp; (V-Band)1
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135-6552 Manifold Gp-Exhaust
10***54Manifold-Exhaust; (Center)1
10***08Manifold-Exhaust; (End)(End)2
10***92Stud-Taperlock; (3/8-16x3.93in)11
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117-2688 Manifold Gp-Exhaust
10***13Gasket6
11***89Manifold-Exhaust; (Center)1
11***15Stud-Taperlock; (M10x85-mm Oal)12
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116-5405 Manifold Gp-Inlet
11***05Manifold Group-Inlet1
11***06Manifold; (Inlet)1
3J***07Seal Valve Assembly To; Seal- Tube Assembly To Logic Valve1
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191-5108 Turbocharger Gp
11***87Bolt; (M6x0.04x10.4-mm)(6mm X 0.04 Thd)1
12***53Clamp As; (Turbine)1
16***58Clip-Hose1
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193-3931 Turbocharger Gp
19***08Turbocharger Group1
19***31Turbocharger Group1
1S***95Gasket-Turbocharger To Manifold; Gasket Turbocharger To Manifold1
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192-3032 Turbocharger Gp
11***87Bolt; (M6x0.04x10.4-mm)(6mm X 0.04 Thd)1
13***75Clamp As; (Service Repair)1
16***58Clip-Hose1
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191-2248 Turbocharger Gp
19***48Turbocharger Group1
19***32Turbocharger Group1
1S***95Gasket-Turbocharger To Manifold; Gasket Turbocharger To Manifold1
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Basic Engine
133-9907 Adapter Gp-Pump Drive
13***06Adapter1
13***07Adapter Group-Pump Drive; -Remote1
1B***67Ball Bearing2
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122-1248 Base Gp-Valve Cover & Inj Harn
10***18Clip3
10***19Clip3
10***34Kit-Receptacle; (12-Pin)(Valve Cover & Inj Harness)1
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138-2546 Bracket Gp-Support
13***46Bracket Group-Support; -Refrigerant Compressor1
16***80Bracket1
6V***22Bolt (M10x1.50x35mm)2
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171-3062 Camshaft Gp
11***59Cover1
12***11Journal1
13***68Gasket; (Camshaft Cover)1
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185-9699 Camshaft Gp
10***89Cover1
11***36Screw-Flat Head; (5/16-18x0.875-In)3
18***99Camshaft Group; (Single)1
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212-9551 Cover Gp-Cylinder Block
06***55Seal-O-Ring (Id=47.22mm)2
21***51Cover Group-Cylinder Block1
6V***17Bolt; (M8x1.25x20-mm)(At Location Y)4
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107-6736 Cover Gp-Cylinder Block
0S***94Bolt (1 In. Long 3/8 In. Dia.); Plate Assembly To Support Assembly2
10***36Cover Group-Cylinder Block; -Remote1
4N***99Gasket; (Oil Drain)1
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115-2985 Cover Gp-Cylinder Block
11***85Cover Group-Cylinder Block1
4P***87Cover1
6V***50Seal-O-Ring (Id=39.34mm)1
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107-6737 Cover Gp-Cylinder Block
0S***94Bolt (1 In. Long 3/8 In. Dia.); Plate Assembly To Support Assembly2
10***37Cover Group-Cylinder Block; -Remote1
4N***99Gasket; (Oil Drain)1
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192-2042 Cover Gp-Engine
12***81Seal-Integral; (Air Compressor Mounting)1
14***14Cover1
16***87Hose-Fumes Disposal1
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235-8781 Cover Gp-Front Housing
03***53Seal-O-Ring; (08.92mm Id)1
10***32Gasket1
18***09Plug As; (High Temperature)1
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209-6669 Cover Gp-Front Housing
12***81Seal-Integral; (Air Compressor Mounting)1
14***14Cover1
20***69Cover Group-Front Housing; (Air Compressor)1
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159-6159 Cover Gp-Front Housing
03***55Locknut; (5/16-18-Thd)(Marked X)2
15***59Cover Group-Front Housing1
16***71Seal1
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150-3135 Cover Gp-Valve Mechanism
14***78Grommet1
15***57Cover-Valve Mech1
15***35Cover Group-Valve Mechanism1
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187-1326 Cover Gp-Valve Mechanism
14***78Grommet1
18***25Cover As-Valve1
18***26Cover Group-Valve Mechanism1
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187-3316 Cover Gp-Valve Mechanism
15***41Cover Group-Valve Mechanism2
15***43Cover Group-Valve Mechanism1
18***16Cover Group-Valve Mechanism1
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159-9343 Cover Gp-Valve Mechanism
14***78Grommet1
15***43Cover Group-Valve Mechanism1
17***39Cover As-Valve; (Breather)1
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150-3141 Cover Gp-Valve Mechanism
14***76Cover-Valve Mechanism1
14***78Grommet1
15***41Cover Group-Valve Mechanism1
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345-9238 Cover Gp-Valve Mechanism
15***35Cover Group-Valve Mechanism2
18***26Cover Group-Valve Mechanism1
34***38Cover Group-Valve Mechanism1
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160-3913 Crankshaft Gp
15***32Crankshaft As1
16***13Crankshaft Group1
16***20Gear-Crankshaft; (80-Teeth)1
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160-3912 Crankshaft Gp
16***99Crankshaft As1
16***12Crankshaft Group1
16***20Gear-Crankshaft; (80-Teeth)1
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132-3212 Crankshaft Gp
12***82Bearing-Main; (0.51-mm Us)(.51mm U.S.)0
12***83Bearing-Main; (0.76-mm Us)(.76mm U.S.)0
12***84Bearing-Main; (0.51-mm Os)(.51mm O.S.)0
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204-3449 Cylinder Block As
10***60Seal; (Liner)6
16***63Shim-Liner; -Cylinder0
16***64Shim-Liner; -Cylinder0
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301-3016 Cylinder Block As
11***20Seal-O-Ring; (Mid-Liner)6
13***17Seal D-Ring6
13***81Liner-Cylinder Block6
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200-2054 Cylinder Block As
11***66Cap; (Bearing)7
17***54Bolt-Hex Head; (M16x160mm)14
20***54Cylinder Block As1
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155-0741 Cylinder Block As
11***20Seal-O-Ring; (Mid-Liner)6
13***17Seal D-Ring6
13***81Liner-Cylinder Block6
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155-0056 Cylinder Block As
11***20Seal-O-Ring; (Mid-Liner)6
14***17Seal-O-Ring; (140.20mm Id)6
14***72Seal-Liner; (Coolant)6
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267-4632 Cylinder Block As
11***20Seal-O-Ring; (Mid-Liner)6
14***17Seal-O-Ring; (140.20mm Id)6
14***72Seal-Liner; (Coolant)6
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234-9709 Cylinder Block As
11***20Seal-O-Ring; (Mid-Liner)6
13***17Seal D-Ring6
13***81Liner-Cylinder Block6
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267-4631 Cylinder Block As
16***81Cap-Crankshaft Bearing7
16***83Bolt; (7/8-14x7.5-In)14
26***31Cylinder Block As1
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115-2983 Cylinder Block Gp
11***83Cylinder Block Group1
1N***99Plug-O-Ring; (Straight Thread)2
20***49Cylinder Block As1
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234-5998 Cylinder Block Gp
10***99Plug2
14***29Seal; (Drainback)1
1S***40Dowel; (30.23 mm X 9.37 mm)1
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234-5997 Cylinder Block Gp
11***20Seal-O-Ring; (Mid-Liner)6
14***17Seal-O-Ring; (140.20mm Id)6
14***72Seal-Liner; (Coolant)6
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155-0740 Cylinder Block Gp
10***99Plug2
11***27Seal-O-Ring; (19.18mm Id)1
14***29Seal; (Drainback)1
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155-0057 Cylinder Block Gp
10***99Plug2
11***27Seal-O-Ring; (19.18mm Id)1
14***29Seal; (Drainback)1
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234-9702 Cylinder Block Gp
10***99Plug2
14***29Seal; (Drainback)1
1S***40Dowel; (30.23 mm X 9.37 mm)1
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223-7263 Cylinder Head As
12***47Guide-Valve; (0.51-mm Os)(Standard)0
12***75Guide-Valve; (Standard)24
12***12Guide-Valve; (0.13-mm Os)(Standard)0
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243-6741 Cylinder Head As
12***47Guide-Valve; (0.51-mm Os)(Standard)0
12***75Guide-Valve; (Standard)24
12***12Guide-Valve; (0.13-mm Os)(Standard)0
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243-0943 Cylinder Head As
15***82Insert-Valve Seat; (Exhaust)(Standard)12
16***42Insert-Valve Seat; (0.76-mm Os Od, Exhaust)(Standard)0
16***43Insert-Valve Seat; (0.76-mm Os Od, Inlet)0
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281-1640 Cylinder Head As
12***47Guide-Valve; (0.51-mm Os)(Standard)0
12***75Guide-Valve; (Standard)24
12***12Guide-Valve; (0.13-mm Os)(Standard)0
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179-9459 Cylinder Head As
11***02Sleeve; (Injector)6
13***06Insert-Valve Seat; (Inlet)(Standard)12
14***52Insert-Valve Seat; (0.508-mm Os Od)(0.508-mm Os Od)12
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148-2149 Cylinder Head Gp
10***50Guide-Valve; (Standard)24
13***29Valve; (Exhaust)12
14***49Cylinder Head Group1
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234-9185 Cylinder Head Gp
10***73Fastener Group-Cylinder Head; (Marked X)10
12***54Bolt-12 Point Head; (3/4-16x8.5-In)1
12***55Bolt-12 Point Head; (3/4-16x7.638-In)1
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191-8423 Cylinder Head Gp
12***54Bolt-12 Point Head; (3/4-16x8.5-In)10
12***55Bolt-12 Point Head; (3/4-16x7.638-In)16
18***96Cylinder Head Group1
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183-5296 Cylinder Head Gp
15***24Valve; (Exhaust)12
16***78Seal-Valve Stem; (Exhaust)24
17***18Cylinder Head Group1
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263-5055 Cylinder Head Gp
15***24Valve; (Exhaust)12
16***78Seal-Valve Stem; (Exhaust)24
18***01Rotocoil Assem.24
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116-1085 Cylinder Head Gp
11***85Cylinder Head Group1
14***49Cylinder Head Group1
18***07Gasket As-Cylinder Head1
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223-9250 Cylinder Head Gp
15***23Valve; (Inlet)12
15***24Valve; (Exhaust)12
16***78Seal-Valve Stem; (Exhaust)24
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176-9918 Cylinder Head Gp
12***47Guide-Valve; (0.51-mm Os)(Standard)0
12***75Guide-Valve; (Standard)24
12***12Guide-Valve; (0.13-mm Os)(Standard)0
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192-8982 Damper & Pulley Gp
16***25Damper Assem.1
17***92Adapter1
19***82Damper & Pulley Group1
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193-2261 Damper & Pulley Gp
14***71Bolt; (5/8-18x9-In)6
16***26Damper Assem.1
19***61Damper & Pulley Group1
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6i-3638 Drive Gp-Pump
0S***90Bolt; (3/8-16x2in)(Clip Thru Spacer To Bracket As)3
13***07Adapter Group-Pump Drive; -Remote1
5M***94Washer; Bracket To Tee, Bracket To Block, Tube As. To Tee, Tube As. To Oil Cooler4
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116-1083 Fastener Gp-Cylinder Head
11***83Fastener Group-Cylinder Head; (Cylinder Head)1
12***84Bolt; (Hex Head) (M16x2x160mm)26
2S***58Washer-Hard; (17x29x3-mm Thk)(Engine Brake)26
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4p-6846 Fastener Gp-Front Housing
0S***94Bolt (1 In. Long 3/8 In. Dia.); Plate Assembly To Support Assembly2
4P***46Fastener Group-Front Housing; -Remote1
5M***94Washer; Bracket To Tee, Bracket To Block, Tube As. To Tee, Tube As. To Oil Cooler2
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108-9382 Fastener Gp-Front Housing
10***82Fastener Group-Front Housing1
14***68Stud-Taperlock2
1F***58Nut-Full; (1/2-13-Thd)(Air Lines)2
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112-2644 Fastener Gp-Front Housing
11***44Fastener Group-Front Housing1
14***67Stud-Taperlock, Plug,Female2
1F***58Nut-Full; (1/2-13-Thd)(Air Lines)2
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204-5024 Fastener Gp-Front Housing
1F***58Nut-Full; (1/2-13-Thd)(Air Lines)2
20***48Stud-Taperlock2
20***24Fastener Group-Front Housing1
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138-2539 Fastener Gp-Front Housing
13***39Fastener Group-Front Housing1
6V***49Nut-Hard; (M12 X 1.75)2
7D***49Washer (Flywheel Counter Balance Weight)2
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176-7007 Fastener Gp-Oil Pan
0L***70Bolt (2-1/4") Filler Tube Assembly To Transfer Drive Case24
17***07Fastener Group-Oil Pan1
24***14Sleeve As24
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109-1657 Fastener Gp-Valve Mechanism
10***57Fastener Group-Valve Mechanism1
5J***94Screw,Cap,Socket He Manifold Mtg12
8L***13Strap-Cable(Tie 5.50" Long)6
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102-3596 Flywheel Gp
10***96Flywheel Group1
16***24Flywheel As1
4N***14Gear; (113-Teeth)(Flywheel Starter)1
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154-6189 Flywheel Gp
0S***76Bolt 5.08 cm(2 In.) Long12
13***76Flywheel As1
15***89Flywheel Group1
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204-9316 Gear Gp-Camshaft
10***26Dowel1
20***16Gear Group-Camshaft1
9X***72Bolt-Locking; (3/8-16x0.875-In)16
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117-2750 Gear Gp-Front
11***50Gear Group-Front1
13***83Shaft1
13***86Gear As; (Idler) (71 Teeth)1
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208-9490 Gear Gp-Front
03***85Bolt-12 Point Hd-Engine Flywheel To6
0S***71Screw,Cap,Hexagon; Tube Assembly To Turbocharger And Elbow Mounting1
10***68Bearing-Sleeve1
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205-1230 Housing Gp-Flywheel
0S***88Bolt,Machine; Hose Assembly Mounting,Hose Assembly To Transmission,And To Torque Converter2
0S***19Bolt,Machine Gear Retaining Part Of Kit P/N 1w***461
14***68Seal-Crankshaft; (Rear)(Flywheel Housing)1
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117-2775 Housing Gp-Flywheel
06***55Seal-O-Ring (Id=47.22mm)1
11***75Housing Group-Flywheel1
14***73Housing-Flywheel, Threaded Tie-Rod, Threaded Tie-Rod; Replaces 421694a11
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212-8137 Housing Gp-Front
06***55Seal-O-Ring (Id=47.22mm)1
0L***70Bolt (2-1/4") Filler Tube Assembly To Transfer Drive Case1
0S***88Bolt,Machine; Hose Assembly Mounting,Hose Assembly To Transmission,And To Torque Converter11
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133-7075 Housing Gp-Front
11***24Gear; (Pump Drive) (34 Teeth)1
13***75Housing Group-Front1
16***66Seal Group-Crankshaft; (Front)1
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159-8621 Housing Gp-Front
0L***70Bolt (2-1/4") Filler Tube Assembly To Transfer Drive Case1
0S***88Bolt,Machine; Hose Assembly Mounting,Hose Assembly To Transmission,And To Torque Converter11
0S***91Screw,Cap,Hexagon Bearing Retainer; Part Of Kit P/N 1w***822
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192-1563 Idler Gp-Belt -Alternator, Refrigerant Compressor
14***11Pulley As-Idler1
14***01Cover-Dust; (Rear)1
15***98Spacer; (10.4x38.1x20-mm Thk)1
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148-2063 Lifter Gp-Valve -Mechanism
0L***26Plug -13mm(.512 In.) Outside Dia.2
12***93Dowel1
14***63Lifter Group-Valve; -Mechanism1
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111-2088 Lifting Gp-Engine
0S***94Bolt (1 In. Long 3/8 In. Dia.); Plate Assembly To Support Assembly8
10***85Eye-Lifting1
11***88Lifting Group-Engine; (Rear)1
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112-2418 Lifting Gp-Engine
0S***95Bolt 1.25 In. (31.75 mm) Long Guard Assemblies To Radiator Guard4
10***86Eye-Lifting1
11***18Lifting Group-Engine1
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117-2748 Lifting Gp-Engine
11***05Plate; (Lifting Eye)2
11***48Lifting Group-Engine1
5P***45Washer-Hard; (13.5x25.5x3-mm Thk)(Turbocharger Blanking Plate)6
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148-7482 Mechanism Gp-Fuel Pump & Valve
14***82Mechanism Group-Fuel Pump & Valve1
19***98Rocker Arm Group3
6I***58Bridge-Valve12
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190-0009 Mechanism Gp-Fuel Pump & Valve
19***09Mechanism Group-Fuel Pump & Valve1
32***36Rocker Arm Group; -Non-Brake3
6I***58Bridge-Valve12
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252-5557 Mounting Gp-Belt Tensioner
0L***70Bolt (2-1/4") Filler Tube Assembly To Transfer Drive Case4
0S***91Screw,Cap,Hexagon Bearing Retainer; Part Of Kit P/N 1w***822
0S***08Bolt-Support To Starting Engine Timing Gear Housing2
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197-7433 Mounting Gp-Belt Tensioner
0L***43Bolt 63.5 mm (3/8" X 2 1/2" -Cover Assembly To Fender4
0S***91Screw,Cap,Hexagon Bearing Retainer; Part Of Kit P/N 1w***824
0S***94Bolt (1 In. Long 3/8 In. Dia.); Plate Assembly To Support Assembly3
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243-3014 Mounting Gp-Belt Tensioner
15***00Bolt; (M10x1.5x54.25-mm)1
16***58Cover; (Dust)1
17***98Pulley As-Idler; (8-Groove)2
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197-7432 Mounting Gp-Belt Tensioner
14***01Cover-Dust; (Rear)1
15***00Bolt; (M10x1.5x54.25-mm)2
16***58Cover; (Dust)1
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138-2550 Mounting Gp-Fan Drive
12***64Stud; (M12x1.75x86.3-mm Oal)2
13***50Mounting Group-Fan Drive; (Short)1
5R***37Washer; (Seal) (1.27mm Thk)2
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116-5408 Mounting Gp-Valve Mechanism
11***83Fastener Group-Cylinder Head; (Cylinder Head)1
11***08Mounting Group-Valve Mechanism1
17***68Bridge As-Valve; (Intake)12
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250-1884 Pan Gp-Oil
06***58Seal-O-Ring; (Oil Pan Drain Plug)2
10***08Gasket; (Oil Pan)1
12***57Bell As; (Suction)1
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196-2111 Pan Gp-Oil
06***58Seal-O-Ring; (Oil Pan Drain Plug)1
0L***51Bolt Starting Engine Fuel Tank Bracket To Diesel Intake Manifold3
0S***91Screw,Cap,Hexagon Bearing Retainer; Part Of Kit P/N 1w***824
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126-0144 Pan Gp-Oil -Engine
06***58Seal-O-Ring; (Oil Pan Drain Plug)2
10***08Gasket; (Oil Pan)1
12***57Bell As; (Suction)1
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134-3071 Piston & Rod Gp
13***71Piston & Rod Group1
13***05Ring-Piston; (Oil Control)1
14***30Ring-Piston; (Intermediate)1
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176-5745 Piston & Rod Gp
13***63Skirt-Piston1
13***61Ring-Piston; (Top)(Top)1
15***25Bolt; (7/16-14-2a-Thd)1
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130-0863 Piston & Rod Gp
11***99Plug-Pin2
11***16Rod Assem.1
11***72Bearing-Connecting Rod1
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234-9706 Plug Gp-Cylinder Block
23***06Plug Group-Cylinder Block; -Remote1
6V***48Seal--O-Ring--To Governor Drive Housing1
6V***09Seal-O-Ring (Id=16.36mm); (16.36-mm Id)1
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191-6520 Plug Gp-Cylinder Block
19***20Plug Group-Cylinder Block1
21***66Seal-O-Ring; (Engine Oil)1
30***30Accessory Drive Pulley, Plug As1
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247-8211 Plug Gp-Cylinder Block
03***53Seal-O-Ring; (08.92mm Id)1
13***27Seal-O-Ring; (19.18mm Id Base Side)1
18***09Plug As; (High Temperature)1
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235-1591 Plug Gp-Cylinder Block
03***53Seal-O-Ring; (08.92mm Id)1
13***27Seal-O-Ring; (19.18mm Id Base Side)1
18***09Plug As; (High Temperature)1
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138-2028 Plug Gp-Cylinder Block
13***28Plug Group-Cylinder Block1
3J***07Seal Valve Assembly To; Seal- Tube Assembly To Logic Valve1
6V***48Seal--O-Ring--To Governor Drive Housing1
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305-9196 Plug Gp-Cylinder Block
30***96Plug Group-Cylinder Block1
6V***65O-Ring - For Oil Fill Plug1
9S***10Plug; (Straight Thread O-Ring)(Cylinder Head)1
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117-0165 Plug Gp-Cylinder Block
11***65Plug Group-Cylinder Block; -Oil Gallery, End1
3B***23Core Plug--Flywheel Housing Pinion Shaft Hole1
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117-0185 Plug Gp-Cylinder Block
11***85Plug Group-Cylinder Block; (Cylinder Block)1
6V***89Seal-O-Ring (Id=19.18mm)1
9S***06Plug (Front 5 Stem Main Control Valve)1
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110-1116 Plug Gp-Cylinder Head
11***16Plug Group-Cylinder Head1
7W***92Plug-Pipe; (1/2-14 Nptf Thd)(Use Without Air Compressor)1
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234-9184 Plug Gp-Cylinder Head
18***08Plug As; (High Temperature)4
23***84Plug Group-Cylinder Head; -Remote1
6V***51Seal-O-Ring (Id=19.18mm)1
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234-9775 Plug Gp-Engine
23***75Plug Group-Engine; -Remote1
6V***09Seal-O-Ring (Id=16.36mm); (16.36-mm Id)1
8L***86Seal-O-Ring (Id=16.36mm); (16.36-mm Id)1
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234-9776 Plug Gp-Engine
23***76Plug Group-Engine; -Remote1
6V***09Seal-O-Ring (Id=16.36mm); (16.36-mm Id)1
9S***05Plug-O-Ring; (Straight Thread O-Ring)1
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328-4238 Rocker Arm Gp
06***39Seal-O-Ring1
19***51Button; (24-mm Od)1
19***69Screw-Arm Adjustment; (9/16-18x2-In)1
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115-9397 Rocker Arm Gp
09***14Pin; (Spring)1
11***97Rocker Arm Group1
11***98Arm; (Valve Rocker) (Exhaust)2
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328-4236 Rocker Arm Gp
30***22Shaft As-Rocker Arm, Exhaust Manifold1
32***96Rocker Arm Group; -Intake4
32***36Rocker Arm Group; -Non-Brake1
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278-1931 Rocker Arm Gp
06***39Seal-O-Ring2
19***51Button; (24-mm Od)2
19***69Screw-Arm Adjustment; (9/16-18x2-In)2
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198-9898 Rocker Arm Gp
03***13Seal-O-Ring2
06***39Seal-O-Ring2
19***51Button; (24-mm Od)2
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278-1929 Rocker Arm Gp
06***39Seal-O-Ring2
19***51Button; (24-mm Od)2
19***69Screw-Arm Adjustment; (9/16-18x2-In)2
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320-2796 Rocker Arm Gp -Intake
25***21Button1
27***91Screw-Arm Adjustment; (3/8-24x1.20-In)1
27***17Nut; (3/8-24-Thd)1
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116-1091 Seal Gp-Crankshaft
10***80Seal-O-Ring (Id=177.17mm)1
11***91Seal Group-Crankshaft; -Single Lip1
16***23Cover1
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319-7401 Seal Gp-Crankshaft -Front
14***67Seal Group-Crankshaft; (Front)1
31***01Seal Group-Crankshaft; -Front1
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193-7413 Support Gp-Engine
19***65Support As1
19***13Support Group-Engine1
2H***88Bolt- 12 cm(4.75 In.) Long-Location "F"8
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193-7412 Support Gp-Engine
19***61Support As1
19***12Support Group-Engine1
5P***45Washer-Hard; (13.5x25.5x3-mm Thk)(Turbocharger Blanking Plate)8
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117-2749 Valve Mechanism Gp -Engine
10***42Base-Valve Mechanism Cover1
10***67Pushrod; (Valve)12
10***68Pushrod-Injector6
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Cooling System
115-2990 Cooler Gp-Engine Oil
06***40Seal-O-Ring (Id=37.69mm)2
10***25Gasket1
11***90Cooler Group-Engine Oil; (Engine Oil)1
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163-1628 Fastener Gp-Oil Cooler -Engine
16***28Fastener Group-Oil Cooler; -Engine1
17***99Stud; (3/8-16-Thd)1
5M***94Washer; Bracket To Tee, Bracket To Block, Tube As. To Tee, Tube As. To Oil Cooler1
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117-2792 Fastener Gp-Oil Cooler -Engine
11***92Fastener Group-Oil Cooler; -Engine1
6V***17Bolt; (M8x1.25x30-mm)(Location Z)1
9M***74Washer-Hard; (8.8x16x2-mm Thk)(Hard)1
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109-2373 Fastener Gp-Water Pump
0S***91Screw,Cap,Hexagon Bearing Retainer; Part Of Kit P/N 1w***821
10***73Fastener Group-Water Pump; (Water Pump Cover)1
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116-5456 Housing & Regulator Gp -Engine Coolant Temperature
11***56Housing & Regulator Group; -Engine Coolant Temperature1
11***00Housing As-Regulator1
12***11Stud; (M8x1.25-Thd)(M8x1.25 Thd Both Ends)4
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116-5460 Lines Gp-Water -Bypass
10***08Flange1
10***95Tube1
11***60Lines Group-Water; -Bypass1
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117-2783 Lines Gp-Water -Single Thermostat
11***56Housing & Regulator Group; -Engine Coolant Temperature1
11***83Lines Group-Water; -Single Thermostat1
11***97Gasket4
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195-7999 Lines Gp-Water
0L***52Capscrew (3/8 - 16 Nc X 3 1/4 Gd8, Hex)5
0S***91Screw,Cap,Hexagon Bearing Retainer; Part Of Kit P/N 1w***823
0S***94Bolt (1 In. Long 3/8 In. Dia.); Plate Assembly To Support Assembly6
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116-5446 Lines Gp-Water -Water Pump Inlet Elbow
10***35Gasket1
11***46Lines Group-Water; -Water Pump Inlet Elbow1
11***57Elbow-Water Pump1
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117-2789 Plug Gp-Water Lines
11***89Plug Group-Water Lines; -Engine Oil Cooler1
6V***27Seal-O-Ring (Id=8.92mm)1
8T***67Plug-Pipe; (Oil Cooler Bonnet Drain)1
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174-5986 Pump Gp-Water
10***77Seal-O-Ring; (100.97mm Id)1
12***72Seal-O-Ring (215.49mm Id)1
16***19Pump Group-Water1
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161-5719 Pump Gp-Water
0S***91Screw,Cap,Hexagon Bearing Retainer; Part Of Kit P/N 1w***821
10***30Bearing As-Roller1
12***17Seal Group; (Water Pump)1
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117-2674 Pump Gp-Water
11***74Pump Group-Water1
17***00Pump Group-Water1
6V***21Bolt; (M8x1.25x80-mm)2
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176-7000 Pump Gp-Water
10***10Gasket1
14***88Seal As; (Water Pump)1
17***95Cover-Pump1
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Electrical And Starting System
124-2674 Connection Gp-Electrical
12***74Connection Group-Electrical; -Ground1
5C***61Nut (M8x1.25 Thd); (M8x1.25 Thd)1
6V***64Washer-Hard; (8.8x25.5x5-mm Thk)1
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126-7631 Connection Gp-Electrical
12***31Connection Group-Electrical; (Cylinder Block Ground)1
12***49Stud; (3/8-16, 5/8-18x3.1-In)1
5P***47Washer (Bracket To Valve Support)1
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159-9107 Connection Gp-Electrical -Cylinder Head Ground
15***07Connection Group-Electrical; -Cylinder Head Ground1
17***99Stud; (3/8-16-Thd)1
6V***01Nut; (3/8-16-Thd)(Plate To Rh And Lh Bracket As)1
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168-4490 Control & Mtg Gp-Engine Elek
16***90Control & Mtg Group-Engine Elek1
16***94Spacer; (8.5x12.7x54.1-mm)2
21***49Control Group-Engine Electronic1
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191-5208 Control & Mtg Gp-Engine Elek
12***11Spacer; (3x15x17-mm Thk)1
15***96Support As1
15***98Support As1
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210-0849 Control Gp-Engine Electronic
21***49Control Group-Engine Electronic1
32***03Control Group-Engine Electronic1
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210-0848 Control Gp-Engine Electronic
18***72Screw-Pan Head; (No 8-32x9.52-mm)(Wax Coated)1
21***48Control Group-Engine Electronic1
7X***15Strap; (Grounding)1
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322-3603 Control Gp-Engine Electronic
18***72Screw-Pan Head; (No 8-32x9.52-mm)(Wax Coated)1
32***03Control Group-Engine Electronic1
7X***15Strap; (Grounding)1
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240-5304 Control Gp-Engine Electronic
18***72Screw-Pan Head; (No 8-32x9.52-mm)(Wax Coated)1
24***04Control Group-Engine Electronic1
7X***15Strap; (Grounding)1
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178-3091 Control Gp-Engine Electronic
17***91Control Group-Engine Electronic1
21***48Control Group-Engine Electronic1
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192-1623 Mounting Gp-Sensor
16***93Adapter1
19***23Mounting Group-Sensor1
1T***20Bolt-12 Point Head; (3/8-16x1.25-In)1
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235-4557 Sensor Gp-Engine
0S***91Screw,Cap,Hexagon Bearing Retainer; Part Of Kit P/N 1w***821
11***82Seal-O-Ring; (16.36mm Id)1
13***11Sensor Group-Temperature; (Transmission Lubrication Oil)3
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192-0883 Sensor Gp-Engine
00***17Elbow1
03***78Connector-Filtered Fuel To Adapter1
0S***91Screw,Cap,Hexagon Bearing Retainer; Part Of Kit P/N 1w***821
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197-8395 Sensor Gp-Pressure
19***24Sensor Group-Pressure; -Air Inlet Manifold1
19***95Sensor Group-Pressure; -Air Inlet Manifold1
6V***48Seal--O-Ring--To Governor Drive Housing1
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194-6724 Sensor Gp-Pressure
15***60Kit-Connecting Plug; (3-Pin)(Engine Sensor Wiring Harness)1
19***26Harness As-Sensor; (16-18 Ga Wire)(Engine Oil Temperature)3
19***24Sensor Group-Pressure; -Air Inlet Manifold1
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194-6722 Sensor Gp-Pressure
15***60Kit-Connecting Plug; (3-Pin)(Engine Sensor Wiring Harness)1
18***40Socket-Connector; (14-Ga To 18-Ga)(14-Ga To 18-Ga)3
19***22Sensor Group-Pressure; -Atmospheric Air1
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197-8394 Sensor Gp-Pressure
16***05Sensor As-Pressure; (Unfiltered Engine Oil)1
19***94Sensor Group-Pressure; -Engine Oil1
6V***48Seal--O-Ring--To Governor Drive Housing1
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194-6725 Sensor Gp-Pressure
15***60Kit-Connecting Plug; (3-Pin)(Engine Sensor Wiring Harness)1
18***40Socket-Connector; (14-Ga To 18-Ga)(14-Ga To 18-Ga)3
19***25Sensor Group-Pressure; -Engine Oil1
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197-8393 Sensor Gp-Pressure
16***03Sensor Group-Pressure; (Turbocharger Inlet, Rh)1
19***93Sensor Group-Pressure; -Atmospheric1
21***68Seal-O-Ring; (11.89-mm Id)1
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197-8396 Sensor Gp-Speed
18***11Sensor Group-Speed; (Crankshaft Timing)1
19***96Sensor Group-Speed; -Timing, Crankshaft1
20***40Seal-O-Ring; (13.94mm Id)1
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197-8397 Sensor Gp-Speed
18***01Sensor Group-Speed; (Camshaft Timing)1
19***97Sensor Group-Speed; -Timing, Camshaft1
20***40Seal-O-Ring; (13.94mm Id)1
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197-8391 Sensor Gp-Temperature
13***11Sensor Group-Temperature; (Transmission Lubrication Oil)1
13***45Pad; (Connector)1
19***91Sensor Group-Temperature; -Air Inlet Manifold1
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197-8392 Sensor Gp-Temperature
13***45Pad; (Connector)1
19***92Sensor Group-Temperature; -Coolant, Water1
26***97Sensor Group-Temperature; (Air Inlet Manifold)1
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191-6130 Wiring Gp-Electronic Control
0S***09Bolt (3/4") Filler Tube Assembly To Transfer Drive Case2
0S***76Bolt 5.08 cm(2 In.) Long2
10***02Kit-Receptacle; (2-Pin)(Engine Sensor Wiring Harness)1
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226-2312 Wiring Gp-Engine
0S***09Bolt (3/4") Filler Tube Assembly To Transfer Drive Case2
0S***76Bolt 5.08 cm(2 In.) Long2
10***02Kit-Receptacle; (2-Pin)(Engine Sensor Wiring Harness)1
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171-1103 Wiring Gp-Engine
10***02Kit-Receptacle; (2-Pin)(Engine Sensor Wiring Harness)1
10***03Kit; (Receptacle) (3-Pin) (Includes Receptacle As & Wedge)1
13***89Clip; (Ladder)1
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117-2760 Wiring Gp-Unit Injector
11***60Wiring Group-Unit Injector1
2V***16Clip; (9.52mm Id)4
4P***37Harness Assembly-Wiring; (Unit Injector)1
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Engine Arrangement
235-4673 Engine Ar-Complete
10***36Cover Group-Cylinder Block; -Remote1
10***37Cover Group-Cylinder Block; -Remote1
10***12Fitting Group-Quick Disconnect; -Fuel1
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235-4672 Engine Ar-Complete
10***36Cover Group-Cylinder Block; -Remote1
10***37Cover Group-Cylinder Block; -Remote1
10***12Fitting Group-Quick Disconnect; -Fuel1
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172-6955 Engine Ar-Complete
10***36Cover Group-Cylinder Block; -Remote1
10***37Cover Group-Cylinder Block; -Remote1
10***12Fitting Group-Quick Disconnect; -Fuel1
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172-6946 Engine Ar-Complete
10***96Flywheel Group1
11***85Cover Group-Cylinder Block1
11***90Cooler Group-Engine Oil; (Engine Oil)1
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172-6957 Engine Ar-Complete
10***36Cover Group-Cylinder Block; -Remote1
10***37Cover Group-Cylinder Block; -Remote1
10***12Fitting Group-Quick Disconnect; -Fuel1
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172-6945 Engine Ar-Complete
10***96Flywheel Group1
11***85Cover Group-Cylinder Block1
11***90Cooler Group-Engine Oil; (Engine Oil)1
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185-6147 Engine Ar-Core
11***83Cylinder Block Group1
11***85Cylinder Head Group1
11***05Manifold Group-Inlet1
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185-6150 Engine Ar-Core
12***48Base Group-Valve Cover & Inj Harn1
12***10Injector Group-Fuel6
13***71Piston & Rod Group6
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235-3450 Engine Ar-Core
12***48Base Group-Valve Cover & Inj Harn1
12***10Injector Group-Fuel6
14***82Mechanism Group-Fuel Pump & Valve1
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235-3451 Engine Ar-Core
12***48Base Group-Valve Cover & Inj Harn1
12***10Injector Group-Fuel6
13***71Piston & Rod Group6
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185-6149 Engine Ar-Core
12***48Base Group-Valve Cover & Inj Harn1
12***10Injector Group-Fuel6
14***82Mechanism Group-Fuel Pump & Valve1
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185-6148 Engine Ar-Core
11***83Cylinder Block Group1
11***85Cylinder Head Group1
11***05Manifold Group-Inlet1
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Fuel System
116-5436 Filter Gp-Fuel
11***36Filter Group-Fuel; -Secondary1
1R***62Filter As-Fuel; (Advanced Efficiency)(Secondary)1
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213-5207 Fitting Gp-Fuel Lines
21***07Fitting Group-Fuel Lines1
3K***60Seal Pilot Manifold On; Seal To Boom Check Valve Drain1
6V***98Seal-O-Ring -Line From Gear Pump Output1
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116-5434 Fitting Gp-Fuel Lines
11***34Fitting Group-Fuel Lines1
11***35Connector1
3J***07Seal Valve Assembly To; Seal- Tube Assembly To Logic Valve1
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213-5208 Fitting Gp-Fuel Lines
03***42Seal-O-Ring; (11.89mm Id)1
21***08Fitting Group-Fuel Lines1
2R***06Connector Valve Assembly To; Connector- Tube Assembly To Logic Valve1
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108-2312 Fitting Gp-Quick Disconnect
03***42Seal-O-Ring; (11.89mm Id)1
10***12Fitting Group-Quick Disconnect; -Fuel1
6V***52Cap-Dust; (Fuel Supply Tee Connection)1
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203-7685 Injector Gp-Fuel
11***84Seal-O-Ring; (32.99mm Id)1
20***85Injector Group-Fuel1
21***98Seal-O-Ring; (34.56mm Id)1
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170-5252 Injector Gp-Fuel
11***84Seal-O-Ring; (32.99mm Id)1
17***52Injector Group-Fuel1
9X***17Seal-O-Ring; (9.6mm Id)1
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128-8510 Injector Gp-Fuel
10***72Spacer; (9.8x15.85x37.6-mm Thk)1
12***10Injector Group-Fuel1
21***25Injector Group-Fuel1
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216-7887 Lines Gp-Fuel
03***47Elbow-Filtered Fuel From Based Assembly2
11***02Hose As1
11***16Hose Assem.1
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193-1561 Lines Gp-Fuel
03***47Elbow-Filtered Fuel From Based Assembly2
03***28Seal-O-Ring1
03***42Seal-O-Ring; (11.89mm Id)12
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189-0351 Pump Gp-Fuel Injection
15***01Bolt; (8x1.25x7-mm)(M8x1.25x70mm)1
18***51Pump Group-Fuel Injection1
20***85Injector Group-Fuel1
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116-5411 Pump Gp-Fuel Priming -Hand
11***11Pump Group-Fuel Priming; -Hand1
13***41Pump Group-Fuel Priming; (Hand)1
1P***36Gasket; (Fuel Priming Pump)(Fuel Priming Pump)1
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145-1695 Pump Gp-Fuel Transfer
09***70Washer-Sealing2
10***69Seal-O-Ring; (Fuel Transfer Pump)1
14***95Pump Group-Fuel Transfer1
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139-9094 Pump Gp-Fuel Transfer
10***69Seal-O-Ring; (Fuel Transfer Pump)2
13***03Cover-Pump1
13***94Pump Group-Fuel Transfer; -Remote1
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139-9095 Pump Gp-Fuel Transfer
0S***73Stud2
10***72Cover; (Hydraulic Pump Drive)1
10***69Seal-O-Ring; (Fuel Transfer Pump)2
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156-5783 Valve Gp-Check -Fuel
03***33Seal-O-Ring; (12.42mm Id)1
15***83Valve Group-Check; -Fuel1
6V***23Ring; (Backup) (13.16mm Id)1
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238-0296 Valve Gp-Check -Fuel
03***33Seal-O-Ring; (12.42mm Id)1
23***96Valve Group-Check; -Fuel Filter1
6V***23Ring; (Backup) (13.16mm Id)1
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233-6742 Valve Gp-Check -Fuel
23***42Valve Group-Check; -Fuel Filter1
28***25Valve Group-Check; -Fuel1
6V***89Seal-O-Ring (Id=19.18mm)1
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281-2725 Valve Gp-Check -Fuel
03***33Seal-O-Ring; (12.42mm Id)1
28***25Valve Group-Check; -Fuel1
6V***23Ring; (Backup) (13.16mm Id)1
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Lubrication System
176-1363 Base Gp-Oil Filter -Engine
17***63Base Group-Oil Filter; -Engine1
2P***04Stud-Hollow; (1.5-16x1.339-In)1
9L***57Plug-Cup2
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154-4327 Base Gp-Oil Filter -Engine
15***27Base Group-Oil Filter; -Engine1
17***63Base Group-Oil Filter; -Engine1
1P***67Plunger; (Engine Oil Cooler Relief Valve)2
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166-1329 Base Gp-Oil Filter -Engine
11***45Valve-Pump Bypass; (Engine Oil Filter)1
16***28Base Assem.1
16***29Base Group-Oil Filter; -Engine1
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155-5005 Base Gp-Oil Filter
06***40Seal-O-Ring (Id=37.69mm)2
0S***88Bolt,Machine; Hose Assembly Mounting,Hose Assembly To Transmission,And To Torque Converter4
15***80Elbow1
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209-6302 Base Gp-Oil Filter -Engine
06***40Seal-O-Ring (Id=37.69mm)2
0S***88Bolt,Machine; Hose Assembly Mounting,Hose Assembly To Transmission,And To Torque Converter4
15***27Base Group-Oil Filter; -Engine1
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117-2786 Cover Gp-Oil Filter Base -Engine
11***86Cover Group-Oil Filter Base; -Engine1
5S***34Seal-O-Ring; (97.79mm Id)1
7C***42Cover; (Filter Base)1
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4n-2481 Fastener Gp-Oil Pump Mounting -Engine
0L***43Bolt 63.5 mm (3/8" X 2 1/2" -Cover Assembly To Fender2
0S***90Bolt; (3/8-16x2in)(Clip Thru Spacer To Bracket As)1
4N***81Fastener Group-Oil Pump Mounting; Oil Pump Mounting Fastener Group1
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192-8992 Filler Gp-Engine Oil
10***69Seal-O-Ring; (Fuel Transfer Pump)1
19***92Filler Group-Engine Oil1
19***53Bracket1
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192-8993 Filler Gp-Engine Oil
06***55Seal-O-Ring (Id=47.22mm)1
19***93Filler Group-Engine Oil1
19***32Cap As; (Engine Oil Filler)1
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110-8876 Filler Gp-Engine Oil
0S***88Bolt,Machine; Hose Assembly Mounting,Hose Assembly To Transmission,And To Torque Converter2
10***99Tube As-Oil Filler; (Engine)1
11***76Filler Group-Engine Oil1
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226-2313 Filler Gp-Engine Oil -Left Front
06***55Seal-O-Ring (Id=47.22mm)1
19***32Cap As; (Engine Oil Filler)1
22***58Tube-Oil Filler1
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154-4325 Filter Gp-Engine Oil
0S***08Bolt-Support To Starting Engine Timing Gear Housing2
0S***19Bolt,Machine Gear Retaining Part Of Kit P/N 1w***462
12***72Stud-Mounting; (3/8-16x1.564-In)(3/8-16 Thd)2
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209-5777 Filter Gp-Engine Oil
0S***08Bolt-Support To Starting Engine Timing Gear Housing2
0S***19Bolt,Machine Gear Retaining Part Of Kit P/N 1w***462
1A***29Bolt (1-1/8") Tube Assembly To Transfer Drive Case6
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117-2751 Filter Gp-Engine Oil
11***51Filter Group-Engine Oil1
13***45Bolt-Hex Head; (M10x1.50x30)6
16***29Base Group-Oil Filter; -Engine1
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123-0783 Valve Gp-Fluid Sampling
12***83Fitting Group-Fuel Lines; -Fuel1
3J***07Seal Valve Assembly To; Seal- Tube Assembly To Logic Valve1
6V***52Cap-Dust; (Fuel Supply Tee Connection)1
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212-8218 Fumes Disposal Gp
19***32Hose As-Fumes; (Disposal)1
19***49Bracket1
21***18Fumes Disposal Group1
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143-2656 Gauge Gp-Oil Level (Dipstick)
12***19Gauge As-Oil Level (Dipstick)1
14***54Tube As-Gauge Guide1
14***56Gauge Group-Oil Level (Dipstick); -Engine1
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217-4518 Guide Gp-Oil Level Gauge
0L***51Bolt Starting Engine Fuel Tank Bracket To Diesel Intake Manifold1
11***68Seal-O-Ring; (15.54mm Id)1
16***70Plug3
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138-4773 Lines Gp-Turbocharger Oil
0L***70Bolt (2-1/4") Filler Tube Assembly To Transfer Drive Case2
0S***88Bolt,Machine; Hose Assembly Mounting,Hose Assembly To Transmission,And To Torque Converter2
10***44Elbow1
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209-7314 Lines Gp-Turbocharger Oil
0L***70Bolt (2-1/4") Filler Tube Assembly To Transfer Drive Case2
10***44Elbow1
11***87Seal-O-Ring (23.16 mm Id)1
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211-2820 Lines Gp-Turbocharger Oil
10***69Tube As; (Oil)1
11***87Seal-O-Ring (23.16 mm Id)1
11***42Adapter1
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235-2421 Lines Gp-Turbocharger Oil
0L***70Bolt (2-1/4") Filler Tube Assembly To Transfer Drive Case2
10***44Elbow1
11***87Seal-O-Ring (23.16 mm Id)1
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165-0592 Lines Gp-Turbocharger Oil
03***33Seal-O-Ring; (12.42mm Id)1
11***87Seal-O-Ring (23.16 mm Id)1
11***42Adapter1
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161-4113 Pump Gp-Engine Oil
12***56Cover As-Pump1
16***13Pump Group-Engine Oil1
1M***44Bolt; (3/8-16x2-1/4 In)2
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233-5220 Pump Gp-Engine Oil
23***20Pump Group-Engine Oil1
6D***46Seal-O-Ring (Id=101.27mm)1
6V***17Bolt; (M8x1.25x30-mm)(Location Z)4
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117-2746 Pump Gp-Engine Oil
06***61Seal-O-Ring (Id=40.87mm)1
11***03Tube Assem.1
11***46Pump Group-Engine Oil1
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138-2535 Valve Gp-Fluid Sampling -Engine Oil
13***35Valve Group-Fluid Sampling; -Engine Oil1
3J***54Packing,Preformed Part Of Kit P/N 5r***271
5P***17Adapter- To Logic Valve 1u***591
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MT835 serial number reference

The PIN/serial plate is mounted on the left side of the tractor's main frame. The plate shows the full Product Identification Number; the first three letters are the serial-number prefix that ties the unit to its model family (BAM for MT835), and the digits that follow are the sequential build number, which also tracks roughly with the production year.

PrefixIdentifies
BAMMT835 track tractor (base model, Caterpillar/Challenger-badged; not the later B or C generation)

Frequently asked questions

What engine does the Caterpillar Challenger MT835 use?

The original 2002-2004 MT835 runs a Caterpillar C12 11.9L inline-six turbo-diesel rated at a gross 340 hp (253 kW), a mechanical, non-ACERT engine with no exhaust aftertreatment. Later tractors badged MT835B (2005-2008) and MT835C (2009-2013) reuse the same model number but carry a larger Caterpillar C15 ACERT engine instead, so always confirm the serial prefix before assuming which engine a given machine has.

What is the operating weight of the MT835?

Base operating weight is approximately 18,140 kg (40,000 lb), though the figure varies by belt width, ballast, and optional equipment fitted. Fuel tank size (1154.4 L/305 US gal standard, 1249.0 L/330 US gal optional) and any added counterweights shift the number further, so treat 40,000 lb as a nominal reference rather than an exact figure for any one unit.

What replaced the Caterpillar Challenger MT835?

AGCO replaced the original C12-powered MT835 with the MT835B starting in 2005, which carries a larger Caterpillar C15 ACERT engine rated near 350 hp. A further MT835C generation followed from 2009 to 2013 with a 410 hp C15 ACERT engine. Both later tractors share the MT835 model number but not the engine or electronics of the 2002-2004 original.

What MT835 owners discuss

What do owners and techs say about the Cat C12 engine in the original MT835?
The 11.9L C12 turbo-diesel in this generation (2002-2004, BAM-prefix serials) uses mechanically actuated, electronically controlled unit injection with air-to-air aftercooling, rated 340 hp (254 kW) gross - it predates the ACERT emissions-era engines and carries no EGR or DPF. Consensus among diesel techs is that it's a strong, torquey block that's straightforward to work on and holds up well when serviced on schedule. The main wear item to watch is injector balance: as the high-pressure oil pump and unit injectors age, cylinder balance can drift, and that's the first thing to check on a rough-running or low-power complaint before chasing fuel filters. With no glow-plug-free cold-start aid on this engine, cold weather starts lean on glow plugs plus ether; a stubborn cold no-start is more often a weak battery or failing glow-plug relay than a fuel problem.
How does the 16-speed powershift transmission and hydraulic reverser hold up?
This generation runs a 16-forward/4-reverse electronically controlled powershift, not the CVT used on the wheeled Challenger line - don't compare wear patterns across the two. If the transmission throws a fault during clutch-fill calibration, techs point to two causes: a worn clutch pack or a leaking modulating valve/seal at that gear's apply piston, since a worn pack lets the piston travel further before it seats, showing up as a long fill time. The hydraulic reverser sees hard use in loader-style front work, and running it in high range wears its clutch pack faster than normal shuttle-range use - a commonly cited cause of premature reverser wear. Otherwise the powershift and final drives are described as durable for this class of machine when fluid and filter service isn't skipped.
What undercarriage wear points come up most for the rubber Mobil-Trac belt system?
Belt tension is held by a nitrogen-charged accumulator and hydraulic cylinder rather than a mechanical adjuster, with tension pressure viewable from the cab monitor - it should be checked routinely rather than trusted to the warning light alone. Mid-roller and front-idler rubber wears with soil type and abrasiveness; once that rubber layer thins to only a few millimeters, the rollers and idlers need re-rubbering or replacing. Belt life itself is heavily duty-cycle dependent (row-crop vs. tillage work), and the two things that end a belt's service life are outer cleat wear and stone damage cutting through to the inner carcass canvas. A track that feels soft or slow to firm back up usually points to a weeping accumulator seal rather than a bad cylinder. Nitrogen accumulators are pressurized and must only be charged with dry nitrogen, never oxygen or shop air - have your dealer verify accumulator condition and charge pressure before servicing.
What hydraulic quirks show up on these Challenger track tractors?
Remote/implement circuits use quick couplers at the valve stack, and owners report coupler tips can work loose or pop out under pressure if not fully seated - if a remote loses pressure intermittently, reseat the coupler and check its retaining collar before suspecting the valve. On the loader/tilt circuit, driving an attachment into the ground while the tractor is still moving is the classic way to blow the OEM O-rings on the tilt side of the control valve; it's a simple reseal, but easy to avoid by lifting the implement before repositioning. When running implements with their own case-drain return (some grain-cart meter drives), match the implement's case-drain flow to what the tractor's factory case-drain circuit is rated for - exceeding it backs up return oil and causes seal problems.
What sensor and electrical fault issues come up most on this generation?
Diagnostic references for this tractor commonly list oil-pressure sensor circuit faults (open or short), clutch-point pressure sensor faults on the high/low clutch circuits, and 5V-supply or main-relay faults in the ECU wiring - most of these trace back to a connector or harness fault rather than a bad sensor itself. On the transmission side, a clogged transmission-filter sensor code or a parking-brake sensor fault is usually exactly what it reports: change the filter or check brake switch adjustment before chasing wiring. As with any tractor of this age, chafed harness sections at grommets and pinch points are a common root cause behind intermittent or hard-to-reproduce fault codes.
What's the overall reliability consensus for this generation of MT835?
General consensus among owners and techs is that the engine and drivetrain are strong and comparatively simple to work on next to newer ACERT-era equipment, and well-maintained units are reported still running their original engine and transmission well into their service life. The recurring complaint isn't the machine itself but dealer support: Caterpillar exited the agricultural tractor business in the mid-2000s and the Challenger brand moved to AGCO, so parts and service for this generation route through AGCO/Challenger dealers rather than Cat dealers, and owners in some regions report having to travel farther for authorized service than they did when the machine was new.
What should I check before buying a used MT835?
First confirm you're actually looking at the original MT835 (2002-2004, C12 engine, BAM-prefix serial) and not a later MT835B or MT835C - those are different platforms with a different engine and rating despite sharing the model name, and pricing/parts don't cross over. Then check hours against maintenance records rather than relying on hours alone. Inspect the belts for outer cleat wear and any stone damage that exposes the inner carcass canvas - as a rule of thumb, half-worn tracks should be reflected in roughly half the value of new belts in the asking price. Check mid-roller and front-idler rubber thickness, and confirm track tension pressure holds rather than bleeding down overnight (a sign of a weeping accumulator). Run the transmission through every range and watch for a clutch-fill calibration fault, and specifically test the hydraulic reverser in high range since that's the fastest-wearing use case. On the engine, check the breather for excess smoke or blow-by and inspect intake hoses for cracks. Cycle the hydraulic remotes and couplers under load, and check the drawbar and frame for cracks or repair welds. Have your dealer verify any track tension, hydraulic, or transmission calibration reading that looks borderline before you commit to a price.

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

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