Caterpillarchallenger
Caterpillar 55
Maintenance schedule, common problems & OEM parts breakdown
The Cat Challenger 55 is a rubber-belted (Mobil-trac) row-crop tractor Caterpillar built from 1996 to 1998, the largest model in the original 35/45/55 Challenger family. It runs the Cat 3126 turbocharged inline-6 diesel, 7.2 L, with mechanical unit injection, rated around 179 kW (240 hp) gross, with roughly 168 kW (225 hp) at the PTO and 142 kW (191 hp) at the drawbar. Operating weight runs approximately 11,800-12,000 kg (26,000-26,500 lb) depending on configuration, with one lighter spec listing near 10,320 kg (22,752 lb) for a stripped build. Buyers could order a standard powershift or add a creeper option, a multi-valve hydraulic remote stack, standard or high-flow (55 gpm) hydraulic pump, and standard or heavy-duty 3-point lift capacity. It succeeded the smaller 35/45 models and was itself succeeded by the larger 65/75/85/95 line on the 3176-family engine.
The 55 sits at the top of the first-generation Challenger platform, the last and largest tractor built before Caterpillar handed the entire rubber-track Challenger program to AGCO in 2002 to become the MT series. Within its short production run the core layout stayed fixed - one engine, one transmission family - so most changes across build years were valve-stack revisions and control-module software updates rather than a platform redesign. That narrow window and the brand handoff make the 55 a fixed-supply used-market tractor: no factory production to fall back on, and parts increasingly come from remanufacturers, salvage, or crossover with other 3126-engine and Funk-transmission applications. Well-kept, lower-hour units with clean injector and undercarriage history hold value; machines with unknown heavy-pulling history need a hard look at the transmission, injectors, and reaction-arm bearing before purchase.
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 55 specifications
Engine
| Engine model | Caterpillar 3126, turbocharged, liquid-cooled inline-6 diesel. Single engine generation used through the 1996-1998 production run; no other engine variant documented for this model. |
| Displacement | 7.2 L (442 cu in), bore x stroke 110 x 127 mm (4.33 x 5.00 in) |
| Cylinders | 6, in-line |
| Rated speed | 2,100 rpm |
| Gross power | Approx. 179 kW (240 hp) gross engine rating |
| PTO power (net) | 168 kW (225 hp), independent rear PTO at 1,000 rpm |
| Drawbar power (net) | 142 kW (191 hp), manufacturer-claimed test figure |
| Emissions tier | Not published for this production window (1996-1998, pre nonroad Tier certification era) - verify with dealer if a certification label is needed |
Weights
| Operating weight (standard) | Approx. 11,793 kg (26,000 lb) for the standard track/hitch configuration |
| Operating weight (light configuration) | One spec listing shows approx. 10,320 kg (22,752 lb); treat as a lighter build option and confirm exact configuration before ordering - varies by configuration/source |
| Shipping weight | Not separately published |
| Ground pressure | Not published |
Dimensions
| Transport length | Approx. 536 cm (211 in / 17 ft 7 in), standard operating length |
| Transport width | Approx. 231 cm (91 in / 7 ft 7 in), outside frame |
| Height to top of cab | 305-320 cm (120-126 in), figure varies slightly by source/roof option |
| Wheelbase | 218 cm (86 in) |
| Ground clearance | Approx. 50 cm (19.6 in) |
| Track gauge (field-adjustable) | 152-228 cm (60-90 in) across the available gauge settings |
| Track length on ground | Approx. 219 cm (7.18 ft) |
| Turning radius | Approx. 2.3 m (7.7 ft) |
Performance
| Travel speed (max, transport) | Up to 28.6 km/h (17.8 mph) |
| Transmission | 16 forward / 9-11 reverse full powershift as standard (reverse gear count varies by listing); 32-speed creeper transmission optional, giving roughly a 91% speed reduction |
| Drawbar power | 142 kW (191 hp) |
| PTO power | 168 kW (225 hp) at 1,000 rpm, electro-hydraulic wet-disc engagement |
| 3-point hitch lift capacity | 5,670 kg (12,500 lb) standard, 6,804 kg (15,000 lb) optional; Category III/IIIN quick coupler |
| Hydraulic pump flow | 118 L/min (31.2 gpm) standard, up to 208 L/min (55 gpm) with the optional pump |
| Hydraulic relief pressure | Approx. 190 bar (2,750 psi), variable-displacement load-sensing, pressure-compensated system |
| Gradeability | Not published |
Service capacities (summary)
| Fuel tank | 473 L (125 gal) |
| Hydraulic system | 121 L (32 gal) |
| Engine oil | Approx. 33 L (8.8 gal), per factory spec sheet - not cross-verified across multiple independent listings |
| Cooling system | Approx. 32.6 L (34.4 qt / 8.7 gal) |
Values vary by configuration, region, and serial range — confirm against your machine before planning transport or lifts.
55 fluids & capacities
| System | Capacity | Recommended fluid |
|---|---|---|
| Engine crankcase, with filter (Cat 3126 turbocharged diesel, 7.2 L) | 33 L (8.7 US gal) | Cat DEO diesel engine oil. SAE 15W-40 for ambient -18C to 40C; SAE 10W-30 for colder ambient down to about -20C. Change oil and filter together on the standard service interval. |
| Cooling system | 32.6-33 L (8.6-8.7 US gal) | Cat ELC (Extended Life Coolant), factory premix, rated to roughly -37C. Full-strength heavy-duty antifreeze/coolant to the same spec is an accepted equivalent. |
| Fuel tank | 473 L (125 US gal) | Ultra-low-sulfur diesel fuel meeting Cat engine fuel spec; use winter-blend fuel in cold ambient to avoid gelling. |
| Transmission and hydraulic system (shared reservoir feeding the powershift transmission, wet brakes, and implement hydraulics) | 121-124 L (32-33 US gal), varies by configuration/series | Cat TDTO (Transmission/Drive Train Oil). SAE 30 for ambient above 0C, SAE 10W for ambient -20C to 10C. Cat TDTO-TMS multi-viscosity oil is the preferred option where ambient swings widely through the season. |
| Final drives (drive sprockets) | Not listed as a separate fill point in the OMM | Final drive gearing draws lubricant from the shared transmission/hydraulic case above; no standalone fluid spec is published for this machine. |
| Track idler and roller hubs (front idler, midwheel idler, reaction-arm/tensioner housings), per undercarriage side | Front idler hub: 0.4 L (0.1 US gal); midwheel idler hub: 0.2 L (0.05 US gal); reaction-arm housing: 0.9 L (0.24 US gal) | Cat-spec gear oil in the SAE 80W/85W-90 GL-5 range. Exact Cat brand designation for these small undercarriage housings is not confirmed in available literature; verify against the OMM lubrication chart or with a dealer before service. |
| Grease points (chassis, pins, linkages) | Per point, to purge | Cat multipurpose EP NLGI 2 chassis grease. Moly-fortified grease is an accepted alternative for pinned, high-load joints. |
Capacities are refill values from factory literature — always fill to the dipstick/sight gauge, not the number.
Caterpillar 55 maintenance schedule
| Service interval | Tasks |
|---|---|
| Every 10 h |
|
| Every 250 h |
|
| Every 500 h |
|
| Every 1,000 h |
|
| Every 2,000 h |
|
| Every 5,000 h |
|
Servicing the 55 beyond the schedule
Predictive Maintenance & Fluid Analysis
Sample the engine oil, the shared TDTO transmission/hydraulic sump, and coolant on a standard interval - wear metals in the transmission sample are the earliest warning of Funk shift-rail wear before it costs a gear. Check injector trim and synchronization with a dial gauge; a slightly-off unit injector on the 3126 MUI shows up as knock long before it fails outright. Watch the track tensioner accumulator for slow bleed-down and inspect reaction-arm bearings for play well ahead of the documented 4,000-6,000-hour wear window.
Corrective & Common Repairs
Expect Funk transmission shift-rail wear first: gears jump out under load and re-engage roughly, worse with aggressive shifting habits. Track tensioner cylinders and accumulators bleed down internally and trip a false low-tension warning with no visible leak. Remote hydraulic valve-stack O-rings weep and flow-control cables stiffen with age. Warm no-restart complaints usually trace to a corroded fuel shutoff solenoid connector rather than the solenoid itself. Clean and reseat corroded ETC module pins before replacing parts on no-shift faults.
Overhaul & Rebuild Points
Plan a reaction-arm bearing and Mobil-trac undercarriage rebuild in the 4,000-6,000-hour range on tractors with heavy drawbar history - it is the single most common big-ticket failure on this platform. The Funk powershift transmission needs a shift-rail and clutch-pack overhaul once wear sets in, though steady, low-shift operators stretch the interval further. Budget separately for 3126 mechanical-unit-injector servicing, since injector wear typically outruns the bottom end on this engine.
Seasonal & Environment Servicing
Switch to cold-weather TDTO viscosity and 10W-30 engine oil before winter; the 3126 MUI has no HEUI hydraulic-start assist, so cold-start discipline (block heater, correct oil grade) matters more here than on later engines. Clear packed soil off rollers, idlers, and the reaction-arm housing daily in wet or clay ground to slow belt and bearing wear. Abrasive sandy or rocky ground chews belts faster, so inspect edges and guide blocks more often. Release track tension before extended off-season storage.
55 common service parts
| Part number | Part | Notes | |
|---|---|---|---|
| 112-6523 | Insert-Fuel Filter | Fuel system service | Check fitment → |
| 1R-0751 | Filter-Fuel | Fuel system service | Check fitment → |
| 7E-5189 | Valve As | Fuel system service | Check fitment → |
| 6I-2501 | Filter Element As-Air | Air intake service | Check fitment → |
| 113-8868 | Switch | Air intake service | Check fitment → |
Always confirm against your machine's serial number — cross-check any part in Heavy Parts AI before ordering.
55 fault codes & troubleshooting
| Code | Meaning | Likely cause | What to do |
|---|---|---|---|
| F202 | CAN data-link error between the Electronic Monitoring Center (EMC) and the Right-Hand Control (RHC) module | Broken, loose, or corroded CAN wiring/connector between EMC and RHC, or an RHC module fault | Enter Mode 12 on the EMC and re-save an existing feature value to force the modules to re-establish communication; if the code returns, check CAN wiring and connector pins between EMC and RHC |
| F203 | CAN data-link error between the EMC and the draft-control (EDC) circuits of the Chassis Control Module (CCM) | Wiring or connector fault on the CAN link feeding the electronic draft control section of the CCM | Re-save a Mode 12 feature value to re-initiate module comms; if the fault stays, inspect EDC wiring harness and CCM connectors for damage or corrosion |
| F204 | CAN data-link error between the EMC and the transmission-control (ETC) circuits of the CCM | Wiring or connector fault on the CAN link feeding the electronic transmission control section of the CCM | Re-save a Mode 12 feature value to re-initiate module comms; if the fault stays, inspect ETC wiring harness and CCM connectors for damage or corrosion |
| F027 | Rockshaft (three-point hitch) position potentiometer circuit reading lower than normal, consistent with a short to ground | Worn or damaged rockshaft potentiometer, or chafed harness shorting the signal wire to ground | Inspect the potentiometer and its linkage rod on the right side of the lift arms, check harness for chafing near connectors, test potentiometer resistance/continuity and replace if out of spec |
| F329 | Transmission/gear-engagement fault, reported with intermittent loss of drive in forward and reverse | Low hydrostatic/transmission charge pressure, a failing transmission control solenoid, or a wiring fault to the transmission control circuit | Check transmission fluid level and filter condition first, verify charge pressure, then check wiring and connectors at the transmission control solenoids before replacing components |
| F399 | The Chassis Control Module (CCM) reported a power reset to the EMC, but the EMC itself has not reset, leaving the modules out of sync | Momentary power interruption to one control module (loose battery, ignition, or ground connection) while other modules stayed powered | Turn the key switch OFF for about ten seconds, then back ON to let all modules resync; if it recurs, check main power and ground connections to the control modules |
| Flash Code 55 (engine) | No active diagnostic codes have been logged by the engine ECM since the key switch was last turned on | Not a fault - informational code confirming a clean active-code status | No repair needed for this code by itself; if a driveability complaint persists despite Code 55, pull logged/inactive codes with the dealer diagnostic tool rather than relying on flash codes alone |
| Flash Code 12 (engine) | Low coolant level detected by the coolant level sensor/switch | Coolant low in the header/expansion tank, external coolant leak, or a faulty level sensor/wiring | Check coolant level and top up, inspect for external leaks, then check sensor wiring and connector if level is correct and the code persists |
| Flash Code 15 (engine) | Oil pressure sensor circuit reading outside its expected range | Faulty oil pressure sensor or damaged sensor wiring/connector | Verify actual oil pressure with a mechanical gauge, inspect the sensor connector and harness, replace the sensor if the circuit checks bad |
Codes and remedies are general guidance for this model family — always confirm with diagnostic tooling and your dealer before major repairs.
55 attachments & work tools
Three-point hitch and mounted implements
Cat-designed rear three-point hitch with Category III/IIIN quick coupler standard on all Challenger 55 units. Electro-hydraulic draft control lifts up to 12,500 lb (5,670 kg) standard, or 15,000 lb (6,800 kg) with the heavy-duty hitch option, for mounted tillage and specialty tools.
PTO-driven work tools
Rear PTO runs at 1000 rpm through an electro-hydraulic wet-disc clutch that engages independent of ground speed. Rated PTO output of 225 hp (168 kW) covers PTO-driven mowers, rotary tillage tools, and material-handling implements sized for this horsepower class.
Drawbar-pulled tillage and planting implements
Standard swinging drawbar rated to the tractor's 191 hp (142 kW) drawbar class, with a wide-swinging drawbar offered as a factory option. This is the primary hookup for chisel plows, disk harrows, field cultivators, and wide planters or drills matched to 4WD/track tractor duty.
Auxiliary hydraulic remotes for implement cylinders
Variable-displacement, load-sensing, pressure-compensated hydraulic system runs at 2,750 psi (190 bar) through multiple remote valve sets. Standard pump flow is 31.2 gpm (118 L/min), with an optional high-flow 55 gpm (208 L/min) pump for fold, lift, and marker cylinders on wide implements.
Mobil-trac rubber-belt undercarriage options
Mobil-trac rubber belts replace wheels for flotation and reduced compaction, offered in several tread types across a range of belt widths (standard 18 in / 457 mm). A large idler and chevron-pattern drive wheel with debris shields reduce mud and trash buildup; exact width/tread choice varies by configuration and application.
Adjustable track gauge and chassis options
Track gauge (center-to-center) is adjustable across narrow (60-90 in / 1,520-2,290 mm), wide (88-120 in / 2,240-3,050 mm), and ultra-wide (120-160 in / 3,050-4,060 mm) settings. A dedicated Wide-Track chassis is offered alongside the standard chassis to pair wider belts and gauges with row-crop spacing needs.
Creeper transmission for precision-speed work
Base transmission is a powershift with power shuttle for clutch-free forward/reverse changes. An optional creeper gearset adds a lower range of forward and reverse ratios at roughly 91% speed reduction for slow, precise planting and cultivation work.
All 55 assemblies by section
Every catalogued assembly group for the Caterpillar 55. Open an assembly to preview the parts inside — full OEM part numbers are available in Heavy Parts AI.
Air Inlet And Exhaust System
108-8311 Aftercooler Gp-Air
| 10***11 | Aftercooler Group-Air | 1 |
| 11***84 | Core As-Aftercooler | 1 |
| 5P***27 | Seal 10.65m (41.93 In.) | 0 |
108-8316 Air Cleaner Gp
| 10***00 | Air Cleaner Group | 1 |
| 10***16 | Air Cleaner Group | 1 |
| 8T***21 | Washer-Hard; (11x21x2.5-mm Thk)(M10x1.50x30mm) | 4 |
106-6700 Air Cleaner Gp
| 10***50 | Film; (Air Cleaner) (Radial Seal) (On Air Cleaner Cover) | 1 |
| 10***00 | Air Cleaner Group | 1 |
| 4P***24 | Seal-O-Ring | 1 |
117-9976 Cover Gp-Inlet Manifold
| 11***76 | Cover Group-Inlet Manifold | 1 |
| 11***77 | Elbow | 1 |
| 4P***24 | Gasket | 1 |
122-6061 Fastener Gp-Inlet Manifold
| 12***61 | Fastener Group-Inlet Manifold | 1 |
| 6V***23 | Bolt (M8x1.25x100mm); (M8x1.25x100-mm) | 2 |
| 9M***74 | Washer-Hard; (8.8x16x2-mm Thk)(Hard) | 2 |
141-9767 Lines Gp-Air
| 10***02 | Tube | 1 |
| 10***51 | Hose | 3 |
| 10***52 | Hose | 2 |
153-6778 Lines Gp-Air
| 10***02 | Tube | 1 |
| 10***51 | Hose | 3 |
| 10***52 | Hose | 2 |
120-9327 Manifold Gp-Exhaust
| 11***44 | Manifold-Exhaust; (Right) | 1 |
| 12***27 | Manifold Group-Exhaust | 1 |
| 14***48 | Bolt; (M10x1.5x65-mm)(M10x1.50x65mm) | 12 |
6i-2298 Manifold Gp-Exhaust
| 11***44 | Manifold-Exhaust; (Right) | 1 |
| 14***48 | Bolt; (M10x1.5x65-mm)(M10x1.50x65mm) | 12 |
| 15***35 | Lock | 5 |
122-6060 Manifold Gp-Inlet
| 11***50 | Gasket | 1 |
| 12***60 | Manifold Group-Inlet | 1 |
| 3K***60 | Seal Pilot Manifold On; Seal To Boom Check Valve Drain | 3 |
4p-1496 Manifold Gp-Inlet
| 11***50 | Gasket | 1 |
| 3J***54 | Packing,Preformed Part Of Kit P/N 5r***27 | 1 |
| 3K***60 | Seal Pilot Manifold On; Seal To Boom Check Valve Drain | 3 |
129-4047 Muffler Gp
| 12***47 | Muffler Group | 1 |
| 12***48 | Muffler As | 1 |
| 12***49 | Pipe As | 1 |
133-6043 Turbocharger Gp
| 11***63 | Housing | 1 |
| 11***58 | Cartridge Group-Turbocharger | 1 |
| 12***54 | Seal-O-Ring | 1 |
153-3904 Turbocharger Gp
| 15***36 | Turbocharger Group | 1 |
| 15***04 | Turbocharger Group | 1 |
| 3E***17 | Locknut; (M10x1.5-Thd)(Spiralock) | 4 |
126-5927 Turbocharger Gp
| 12***27 | Turbocharger Group | 1 |
| 13***43 | Turbocharger Group | 1 |
| 3E***17 | Locknut; (M10x1.5-Thd)(Spiralock) | 4 |
153-3336 Turbocharger Gp
| 12***54 | Seal-O-Ring | 1 |
| 12***99 | Plate-Clamp; (Compressor)(Compressor) | 3 |
| 12***66 | Bolt Assem. | 6 |
Basic Engine
6i-2341 Camshaft Gp
| 10***94 | Plate-Thrust | 1 |
| 1B***05 | Key; (Woodruff) | 1 |
| 6I***41 | Camshaft Group | 1 |
100-4966 Camshaft Gp
| 10***66 | Camshaft Group | 1 |
| 10***98 | Camshaft Assem. | 1 |
| 10***94 | Plate-Thrust | 1 |
108-8302 Coupling Gp-Flexible
| 10***02 | Coupling Group-Flexible | 1 |
| 3E***02 | Coupling As | 1 |
| 4E***69 | Cover | 1 |
128-6895 Cover Gp-Cylinder Block
| 11***18 | Bolt As; (M8x1.25x16-mm) | 4 |
| 12***44 | Cover-Oil | 1 |
| 12***95 | Cover Group-Cylinder Block | 1 |
7w-9847 Cover Gp-Front Housing
| 10***20 | Cover As-Front | 1 |
| 1U***46 | Sealant (For Locations A) | 0 |
| 6V***17 | Bolt; (M8x1.25x30-mm)(Location Z) | 12 |
149-8134 Cover Gp-Front Housing
| 10***20 | Cover As-Front | 1 |
| 14***34 | Cover Group-Front Housing | 1 |
| 1U***46 | Sealant (For Locations A) | 3 |
4w-2172 Cover Gp-Valve Mechanism
| 11***40 | Gasket; (Valve Cover) | 1 |
| 11***60 | Cover | 1 |
| 4W***72 | Cover Group-Valve Mechanism; Valve Mechanism Cover Group | 1 |
115-4187 Cover Gp-Valve Mechanism
| 11***87 | Cover Group-Valve Mechanism | 1 |
| 11***40 | Gasket; (Valve Cover) | 1 |
| 11***62 | Cover | 1 |
4w-2197 Crankshaft Gp
| 10***30 | Bearing-Main; (Standard) | 3 |
| 10***25 | Crankshaft Assem. | 1 |
| 10***02 | Bearing-Thrust; (Standard) | 1 |
113-6087 Crankshaft Gp
| 10***08 | Bearing-Main; (Standard) | 6 |
| 11***87 | Crankshaft Group | 1 |
| 14***62 | Bearing; (0.25mm Undersize) | 0 |
7e-2482 Cylinder Block Gp
| 12***95 | Cylinder Block Group | 1 |
| 1W***07 | Sleeve | 2 |
| 4P***51 | Tube As-Piston Cooling | 6 |
305-8141 Cylinder Block Gp
| 21***86 | Bearing-Sleeve; (Camshaft) | 1 |
| 26***74 | Cylinder Block Group | 1 |
| 2M***71 | Plug-Cup; (38.35mm Avg Od) | 2 |
263-3774 Cylinder Block Gp
| 26***74 | Cylinder Block Group | 1 |
| 5P***47 | Washer (Bracket To Valve Support) | 14 |
| 7E***68 | Cap-Crankshaft Bearing | 7 |
129-1095 Cylinder Block Gp
| 12***95 | Cylinder Block Group | 1 |
| 2M***71 | Plug-Cup; (38.35mm Avg Od) | 2 |
| 2M***80 | Seal--To Connector Pump Outlet | 1 |
129-1165 Cylinder Block Gp
| 03***53 | Seal-O-Ring; (08.92mm Id) | 1 |
| 12***65 | Cylinder Block Group | 1 |
| 18***09 | Plug As; (High Temperature) | 1 |
126-5867 Cylinder Head As
| 11***61 | Sleeve | 6 |
| 12***67 | Cylinder Head As | 1 |
| 16***62 | Insert-Valve Seat | 6 |
126-0445 Cylinder Head As
| 11***36 | Seal-Valve Stem | 12 |
| 12***45 | Cylinder Head As | 1 |
| 12***67 | Cylinder Head As | 1 |
119-3065 Cylinder Head As
| 11***61 | Sleeve | 6 |
| 11***65 | Cylinder Head As | 1 |
| 12***53 | Insert-Valve Seat; (Inlet) | 6 |
126-5872 Cylinder Head Gp
| 11***80 | Valve-Inlet | 6 |
| 11***36 | Seal-Valve Stem | 12 |
| 12***67 | Cylinder Head As | 1 |
4p-8263 Cylinder Head Gp
| 11***80 | Valve-Inlet | 6 |
| 11***36 | Seal-Valve Stem | 12 |
| 11***65 | Cylinder Head As | 1 |
4p-8264 Cylinder Head Gp
| 10***32 | Gasket; (1.61mm Thk) | 1 |
| 12***36 | Bolt-Hex Head; (M20x2.5x160mm) | 14 |
| 1J***71 | Seal (10.52 Degrees I.D.); Seal-O-Ring -- To Adapter | 3 |
122-6605 Cylinder Head Gp
| 12***05 | Cylinder Head Group | 1 |
| 12***29 | Fastener Group-Cylinder Head | 14 |
| 12***72 | Cylinder Head Group | 1 |
116-4811 Damper & Pulley Gp
| 11***49 | Pulley-Crankshaft | 1 |
| 11***11 | Damper & Pulley Group | 1 |
| 16***21 | Damper Assem. | 1 |
141-4608 Damper & Pulley Gp
| 14***08 | Damper & Pulley Group | 1 |
| 14***09 | Pulley-Crankshaft | 1 |
| 16***21 | Damper Assem. | 1 |
4p-8116 Drive Gp-Fan
| 4P***86 | Bracket As | 1 |
| 4P***16 | Drive Group-Fan | 1 |
| 4W***03 | Cup-Roller Bearing | 2 |
4p-4713 Drive Gp-Fan
| 4P***13 | Drive Group-Fan | 1 |
| 4P***16 | Drive Group-Fan | 1 |
| 6V***49 | Bolt; (M10x1.5x50-mm) | 4 |
118-2074 Drive Gp-Water Pump
| 03***75 | V-Belt; (Pump Drive)(Water) | 1 |
| 10***67 | Plate As-Idler | 1 |
| 11***04 | Pulley As-Idler | 1 |
4w-5428 Drive Gp-Water Pump
| 03***75 | V-Belt; (Pump Drive)(Water) | 1 |
| 10***67 | Plate As-Idler | 1 |
| 11***04 | Pulley As-Idler | 1 |
116-4556 Fastener Gp-Front Housing
| 11***56 | Fastener Group-Front Housing; (Housing) | 1 |
| 5P***45 | Washer-Hard; (13.5x25.5x3-mm Thk)(Turbocharger Blanking Plate) | 6 |
| 6V***36 | Bolt; (M12x1.75x70-mm) | 6 |
108-8609 Flywheel Gp
| 10***08 | Flywheel As | 1 |
| 10***09 | Flywheel Group | 1 |
| 16***60 | Flywheel As | 1 |
2w-8475 Gear Gp-Front
| 2W***65 | Shaft-Idler | 1 |
| 2W***66 | Bearing-Sleeve | 1 |
| 2W***75 | Gear Group-Front; Front Gear Group | 1 |
101-4540 Gear Gp-Front
| 10***07 | Shaft-Cam Idler | 1 |
| 10***08 | Plate-Retaining | 1 |
| 10***40 | Gear Group-Front | 1 |
100-6570 Housing Gp-Flywheel
| 10***70 | Housing Group-Flywheel | 1 |
| 16***42 | Housing-Flywheel | 1 |
| 1U***46 | Sealant (For Locations A) | 0 |
122-8934 Housing Gp-Flywheel
| 12***34 | Housing Group-Flywheel | 1 |
| 16***23 | Cover | 1 |
| 16***42 | Housing-Flywheel | 1 |
7l-0002 Housing Gp-Front
| 1U***46 | Sealant (For Locations A) | 0 |
| 5P***45 | Washer-Hard; (13.5x25.5x3-mm Thk)(Turbocharger Blanking Plate) | 6 |
| 6V***18 | Bolt (M8x1.25x50mm); (M8x1.25x50-mm) | 4 |
116-4554 Housing Gp-Front
| 10***11 | Plug | 2 |
| 11***54 | Housing Group-Front | 1 |
| 13***42 | Housing-Front | 1 |
4w-2515 Lifting Gp-Engine
| 4W***82 | Plate-Lifting; (Rear)(Rear) | 1 |
| 4W***83 | Plate-Lifting; (Front) | 1 |
| 4W***15 | Lifting Group | 1 |
117-3476 Lifting Gp-Engine
| 11***76 | Lifting Group-Engine | 1 |
| 4W***82 | Plate-Lifting; (Rear)(Rear) | 1 |
| 4W***83 | Plate-Lifting; (Front) | 1 |
108-8312 Mounting Gp-Engine Flexible
| 10***57 | Washer; (22x76.2x6-mm Thk) | 4 |
| 10***12 | Mounting Group-Engine Flexible | 1 |
| 7C***49 | Mount As | 4 |
108-8314 Mounting Gp-Refrigerant Compr
| 10***14 | Mounting Group-Refrigerant Compr | 1 |
| 13***67 | Strap | 1 |
| 7C***41 | Plate | 1 |
126-0531 Pan Gp-Oil
| 12***30 | Pan-Oil | 1 |
| 12***31 | Pan Group-Oil | 1 |
| 26***16 | Gasket-Oil Pan; (Engine) | 1 |
147-9592 Piston & Rod Gp
| 10***66 | Ring-Piston; (Oil Regulating) | 1 |
| 13***46 | Ring-Piston; (Top) | 1 |
| 13***83 | Crown As-Piston | 1 |
107-7639 Piston & Rod Gp
| 10***45 | Crown As-Piston | 1 |
| 10***39 | Piston & Rod Group; Connecting Rod And Piston Group | 1 |
| 10***87 | Ring-Piston (Top-Chrome) | 1 |
156-0228 Plug Gp-Cylinder Block
| 15***28 | Plug Group-Engine | 1 |
| 3D***24 | O-Ring - For Oil Drain & Level Plug (Items 3 & 7) | 2 |
| 3K***60 | Seal Pilot Manifold On; Seal To Boom Check Valve Drain | 1 |
4w-5429 Pulley Gp-Crankshaft
| 2W***81 | Plate-Clamp; (Pulley Clamp) | 1 |
| 4W***29 | Pulley Group-Crankshaft; Crankshaft Pulley Group | 1 |
| 7W***73 | Pulley-Crankshaft; (1-Groove) | 1 |
141-2726 Pulley Gp-Fan & Alt Drive
| 14***26 | Pulley Group-Fan & Alt Drive | 1 |
| 14***27 | Pulley-Alternator | 1 |
| 14***28 | Pulley-Fan | 1 |
115-7903 Pulley Gp-Fan & Alt Drive
| 11***00 | Pulley-Fan Drive | 1 |
| 11***03 | Pulley Group-Fan & Alt Drive | 1 |
| 2P***91 | V-Belt; (A/C Compressor) | 1 |
107-7722 Rocker Arm Gp
| 0L***26 | Plug -13mm(.512 In.) Outside Dia. | 1 |
| 10***91 | Seat-Wear | 1 |
| 10***76 | Rocker Arm As; (Unit Injector) | 1 |
115-4203 Seal Gp-Crankshaft
| 11***03 | Seal Group-Crankshaft | 1 |
| 22***09 | Seal Group-Crankshaft; (Rear) | 1 |
| 24***39 | Seal-Crankshaft; (Front)(Front) | 1 |
108-8303 Support Gp-Engine
| 10***09 | Support-Engine | 2 |
| 10***03 | Support Group-Engine | 1 |
| 12***19 | Support-Engine | 2 |
4p-4372 Mechanism Gp-Fuel Pump & Valve
| 10***22 | Rocker Arm Group-Valve | 6 |
| 14***47 | Arm As-Lifter | 4 |
| 2D***42 | Ball 6.35 mm(.25 In.)Diameter | 2 |
Braking System
112-8779 Brake As-Parking
| 09***37 | Ring-Retaining | 1 |
| 11***79 | Brake As-Parking | 1 |
| 11***84 | Caliper | 1 |
108-4735 Brake Gp-Parking
| 01***37 | Clevis-Adjustable | 1 |
| 03***65 | Pin | 1 |
| 10***35 | Brake Group-Parking | 1 |
116-5689 Brake Gp-Service
| 09***17 | Ring-Retaining | 1 |
| 11***78 | Bearing-Nylon | 2 |
| 11***89 | Brake Group-Service | 1 |
151-8417 Lines Gp-Brake
| 10***76 | Hose As | 2 |
| 11***35 | Elbow | 2 |
| 14***25 | Hose As | 1 |
Cooling System
100-6269 Cooler Gp-Engine Oil
| 10***69 | Cooler Group-Engine Oil | 1 |
| 23***55 | Gasket | 1 |
| 26***43 | Core As-Engine Oil Cooler | 1 |
129-5726 Fan Gp-Suction
| 12***50 | Spider As-Fan | 1 |
| 12***26 | Fan Group-Suction | 1 |
| 5P***16 | Washer; (Hard) (8.8x20.5x2mm Thk) | 6 |
7c-1567 Lines Gp-Water
| 12***48 | Housing-Water Regulating | 1 |
| 12***69 | Regulator-Water Temperature; (94-Deg C) | 1 |
| 15***99 | Clamp; (Hose) | 2 |
7c-4508 Pump Gp-Water
| 15***37 | Pump Group-Water | 1 |
| 1J***71 | Seal (10.52 Degrees I.D.); Seal-O-Ring -- To Adapter | 1 |
| 3D***24 | O-Ring - For Oil Drain & Level Plug (Items 3 & 7) | 1 |
4w-7589 Pump Gp-Water
| 2M***53 | Seal--To Seal Brake Housing To Main Housing | 1 |
| 4J***24 | Seal 46.99 mm(1.85 In.) I.D. | 1 |
| 4W***89 | Pump Group-Water | 1 |
159-3137 Pump Gp-Water
| 14***88 | Seal As; (Water Pump) | 1 |
| 15***52 | Impeller-Pump | 1 |
| 15***37 | Pump Group-Water | 1 |
118-2075 Pump Gp-Water
| 11***75 | Pump Group-Water | 1 |
| 2M***53 | Seal--To Seal Brake Housing To Main Housing | 1 |
| 4J***24 | Seal 46.99 mm(1.85 In.) I.D. | 1 |
138-4404 Radiator Gp
| 03***65 | Cap As-Radiator; (Sea Water Heat Exchanger) | 1 |
| 13***04 | Radiator Group | 1 |
| 4N***79 | Neck Assem. | 1 |
129-5724 Radiator Gp
| 11***29 | Hose-Radiator; (Outlet) | 1 |
| 11***26 | Mount | 2 |
| 12***29 | Shroud As | 1 |
138-2871 Radiator Gp
| 03***65 | Cap As-Radiator; (Sea Water Heat Exchanger) | 1 |
| 13***71 | Radiator Group | 1 |
| 4N***79 | Neck Assem. | 1 |
115-2350 Radiator Gp
| 11***29 | Hose-Radiator; (Outlet) | 1 |
| 11***26 | Mount | 2 |
| 11***50 | Radiator Group | 1 |
Differential Steering System
155-0023 Control Gp-Secondary Steering
| 10***01 | Kit; (Receptacle) (12-Pin) (Includes Receptacle As & Wedge) | 1 |
| 14***68 | Module-Control | 1 |
| 14***30 | Lamp As | 1 |
149-2689 Control Gp-Secondary Steering
| 03***11 | Terminal-Ring; (2-Ga, 5/16-In Screw) | 3 |
| 03***66 | Switch Group-Magnetic; (Start Relay) | 1 |
| 09***04 | Terminal-Ring; (2-Ga, 3/8-In Screw) | 2 |
146-0352 Control Gp-Steering
| 13***62 | Valve Group-Steering | 1 |
| 14***03 | Tube As | 1 |
| 14***04 | Tube As | 1 |
124-9393 Housing Gp-Center
| 10***38 | Shaft-Bevel Gear | 1 |
| 10***40 | Gear-Ring; (72-Teeth) | 1 |
| 10***42 | Gear; (45/45-Teeth) | 1 |
151-8419 Lines Gp-Steering
| 10***72 | Tube As | 1 |
| 10***31 | Connector-Filter | 1 |
| 11***71 | Tube As | 1 |
159-3066 Lines Gp-Steering
| 10***72 | Tube As | 1 |
| 10***31 | Connector-Filter | 1 |
| 11***71 | Tube As | 1 |
129-1657 Motor Gp-Piston
| 11***50 | Housing | 1 |
| 12***57 | Motor Group-Piston | 1 |
| 13***38 | Rotating Group-Motor | 1 |
151-6012 Pump & Mtg Gp-Steering
| 14***08 | Pump Group-Electric | 1 |
| 14***35 | Bracket As | 1 |
| 15***12 | Pump & Mtg Group-Steering | 1 |
108-2903 Pump Gp-Charge
| 10***03 | Pump Group-Charge | 1 |
| 11***34 | Kit-Seal | 1 |
| 11***35 | Dowel | 4 |
133-8738 Rotating Gp-Motor
| 11***84 | Shaft-Drive | 1 |
| 11***17 | Screw; (M6x1x16-mm) | 7 |
| 12***99 | Plate-Retaining | 1 |
114-4182 Valve & Mtg Gp-Diverter
| 11***68 | Valve Group-Solenoid | 1 |
| 11***82 | Valve & Mtg Group-Diverter | 1 |
| 8T***06 | Manifold | 1 |
151-6011 Valve & Mtg Gp-Steering
| 03***37 | Bolt-Self Locking; 3.81cm(1.5 In.)Long | 2 |
| 14***37 | Bracket As | 1 |
| 15***11 | Valve & Mtg Group-Steering | 1 |
151-6010 Valve & Mtg Gp-Steering
| 15***10 | Valve & Mtg Group-Steering | 1 |
| 19***68 | Plate | 1 |
| 19***42 | Valve Group-Brake Control | 1 |
137-8090 Valve Gp-Check
| 13***87 | Washer-Backup | 1 |
| 13***90 | Valve Group-Check | 1 |
| 4K***88 | Seal; Adapter To Oil Pump Outlet Manifold | 1 |
129-1101 Valve Gp-Check -Fuel
| 03***33 | Seal-O-Ring; (12.42mm Id) | 1 |
| 12***01 | Valve Group-Check; -Fuel-Fuel Filter | 1 |
| 6V***23 | Ring; (Backup) (13.16mm Id) | 1 |
133-8740 Valve Gp-Flushing
| 11***10 | Retainer | 2 |
| 13***40 | Valve Group-Flushing | 1 |
| 6E***02 | Spring | 2 |
135-7462 Valve Gp-Steering
| 09***19 | Ring-Retaining | 1 |
| 12***28 | Slug | 1 |
| 13***62 | Valve Group-Steering | 1 |
159-2492 Valve Gp-Steering
| 15***24 | Manifold | 1 |
| 15***92 | Valve Group-Steering | 1 |
Drawbar, Three Point Hitch And Pto
137-5752 Coupler Gp
| 13***88 | Seal | 4 |
| 13***89 | Spring-Collar | 2 |
| 13***90 | Ring-Retaining | 2 |
137-5751 Coupler Gp
| 13***88 | Seal | 4 |
| 13***89 | Spring-Collar | 2 |
| 13***90 | Ring-Retaining | 2 |
133-2286 Cylinder As-Hydraulic
| 02***87 | Fitting-Grease; (Universal Joint) | 1 |
| 11***74 | Seal; (44.45-mm Id) | 1 |
| 11***75 | Seal; (44.45-mm Id) | 1 |
133-2285 Cylinder As-Hydraulic
| 02***87 | Fitting-Grease; (Universal Joint) | 1 |
| 11***74 | Seal-Oil | 1 |
| 11***83 | Seal | 1 |
127-3022 Drawbar Gp
| 11***14 | Clevis | 1 |
| 11***15 | Retainer | 1 |
| 11***18 | Pin As-Hitch; (Drawbar) | 1 |
153-9024 Drawbar Gp
| 11***12 | Hanger As | 1 |
| 11***15 | Retainer | 1 |
| 11***19 | Shield As | 1 |
108-1923 Drawbar Gp-Swinging
| 10***23 | Drawbar Group-Swinging | 1 |
| 11***12 | Hanger As | 1 |
| 11***14 | Clevis | 1 |
108-1918 Hitch Ar
| 10***18 | Hitch Ar | 1 |
| 11***89 | Link As-Upper | 1 |
| 11***90 | Link As-Lower | 1 |
132-4666 Hitch Ar -Hook
| 11***97 | Block-Guide | 2 |
| 11***98 | Limiter-Sway | 1 |
| 11***99 | Limiter-Sway | 1 |
132-4664 Hitch Ar -Hook
| 11***93 | Parts Group-Cab | 1 |
| 11***95 | Pin As | 2 |
| 11***97 | Block-Guide | 2 |
108-1920 Hitch Ar
| 10***20 | Hitch Ar | 1 |
| 11***89 | Link As-Upper | 1 |
| 11***90 | Link As-Lower | 1 |
108-1919 Hitch Ar
| 10***19 | Hitch Ar | 1 |
| 11***89 | Link As-Upper | 1 |
| 11***90 | Link As-Lower | 1 |
108-1921 Hitch Ar
| 10***21 | Hitch Ar | 1 |
| 11***89 | Link As-Upper | 1 |
| 11***90 | Link As-Lower | 1 |
126-9266 Hitch Ar -Hook
| 11***97 | Block-Guide | 2 |
| 11***98 | Limiter-Sway | 1 |
| 11***99 | Limiter-Sway | 1 |
132-4665 Hitch Ar -Hook
| 11***93 | Parts Group-Cab | 1 |
| 11***95 | Pin As | 2 |
| 11***97 | Block-Guide | 2 |
141-2844 Hitch As-Quick
| 03***55 | Locknut; (5/16-18-Thd)(Marked X) | 2 |
| 11***98 | Pin-Grooved | 2 |
| 11***99 | Pin-Grooved | 4 |
134-4780 Link As-Lift
| 05***37 | Plug | 1 |
| 05***20 | Pin-Spring | 1 |
| 12***14 | Tube As | 1 |
150-4137 Link As-Lower
| 09***93 | Pin-Spring | 1 |
| 15***37 | Link As-Lower | 1 |
| 15***73 | Clip | 1 |
112-8890 Link As-Lower
| 09***75 | Pin-Spring | 1 |
| 09***92 | Pin-Spring | 1 |
| 11***60 | Spring | 1 |
112-8892 Link As-Lower
| 09***75 | Pin-Spring | 1 |
| 09***92 | Pin-Spring | 1 |
| 11***60 | Spring | 1 |
150-4138 Link As-Lower-Lh
| 09***93 | Pin-Spring | 1 |
| 15***38 | Link As-Lower-Lh; (Lh) | 1 |
| 15***73 | Clip | 1 |
112-8889 Link As-Upper
| 11***89 | Link As-Upper | 1 |
| 11***03 | End As | 1 |
| 11***05 | End As | 1 |
126-9267 Link Gp-Hitch
| 11***05 | End As | 1 |
| 11***08 | Insert-Ball End | 1 |
| 12***33 | Cap-Sealing | 2 |
112-8901 Parts Gp-Hitch
| 00***01 | Ring-Retaining | 1 |
| 11***72 | Bolt; (M4x0.7x16-mm) | 2 |
| 11***25 | Clip | 2 |
112-8685 Power Take-Off Gp
| 0L***08 | Dowel (.625" Long) | 1 |
| 11***49 | Fitting As; (Quick Disconnect) | 1 |
| 11***25 | Dowel | 2 |
135-2940 Valve Gp-Power Take-Off
| 11***38 | Fitting | 1 |
| 11***39 | Plug-Power Take-Off Valve | 1 |
| 11***40 | Pin-Power Take-Off Clutch Valve | 1 |
Electrical And Starting System
108-8304 Alternator Gp-Charging
| 10***82 | Wire Assem. | 1 |
| 10***04 | Alternator Group-Charging | 1 |
| 11***51 | Strap-Adjustment | 1 |
121-4134 Alternator Gp-Charging
| 03***12 | Screw-Forming; (10-24x0.5-In) | 3 |
| 12***34 | Alternator Group-Charging | 1 |
| 13***24 | Frame As-Alternator | 1 |
113-8885 Harness As
| 10***05 | Socket-Connector; (16-Ga To 18-Ga) | 12 |
| 10***06 | Receptacle Kit; (Includes Wedge And Receptacle Assem.) | 1 |
| 11***85 | Harness As | 1 |
113-8697 Harness As-Console
| 00***84 | Terminal-Blade; (16-Ga To 20-Ga) | 2 |
| 03***49 | Clamp-Cable | 1 |
| 09***57 | Terminal | 12 |
7e-6310 Heater Gp-Jacket Water
| 12***86 | Element As-Jacket Water Heater; (120-Volt, 1000-Watt) | 1 |
| 13***48 | Kit-Seal; (Jacket Water Heater) | 1 |
| 13***17 | Cap As-Dust | 1 |
132-2457 Heater Gp-Jacket Water
| 12***87 | Element As-Jacket Water Heater; (240-Volt, 1000-Watt) | 1 |
| 13***48 | Kit-Seal; (Jacket Water Heater) | 1 |
| 13***57 | Heater Group-Jacket Water | 1 |
150-4132 Lamp Gp-Head -Rh
| 11***86 | Lamp; (12-Volt, 50-Watt) | 2 |
| 11***87 | Lamp; (12-Volt, 37.5-Watt) | 1 |
| 15***32 | Lamp Group-Head; -Rh | 1 |
150-4133 Lamp Gp-Head -Lh
| 11***86 | Lamp; (12-Volt, 50-Watt) | 2 |
| 11***87 | Lamp; (12-Volt, 37.5-Watt) | 1 |
| 15***33 | Lamp Group-Head; -Lh | 1 |
108-1956 Lamp Gp-Warning Beacon
| 10***56 | Lamp Group-Warning Beacon | 1 |
| 11***92 | Screw | 3 |
| 11***05 | Socket-Auxiliary Power | 1 |
128-6985 Lamp Gp-Warning Beacon -Amber, Magnetic Mount, Rotating
| 12***85 | Lamp Group-Warning Beacon; -Amber, Magnetic Mount, Rotating | 1 |
| 17***34 | Plug As; (Warning Beacon) | 1 |
| 9R***42 | Plug As | 1 |
114-5967 Lamp Gp-Working
| 11***48 | Lamp-Flood | 2 |
| 11***67 | Lamp Group-Working | 1 |
| 11***68 | Bracket | 2 |
153-9151 Lighting Ar -Flood
| 15***14 | Lighting Group-Flood | 1 |
| 15***51 | Lighting Ar; -Flood | 1 |
117-6962 Lighting Gp-Fender
| 11***71 | Support As; (Lh) | 1 |
| 11***72 | Support As; (Rh) | 1 |
| 11***63 | Clip-Spring | 2 |
151-6014 Lighting Gp-Flood
| 10***03 | Kit; (Receptacle) (3-Pin) (Includes Receptacle As & Wedge) | 1 |
| 11***15 | Relay As; (12-Volt)(Junction Box) | 2 |
| 13***89 | Clip; (Ladder) | 1 |
153-9153 Lighting Gp-Flood
| 10***03 | Kit; (Receptacle) (3-Pin) (Includes Receptacle As & Wedge) | 1 |
| 11***15 | Relay As; (12-Volt)(Junction Box) | 2 |
| 13***89 | Clip; (Ladder) | 1 |
104-2315 Sensor & Mtg Gp-Ground Speed
| 10***15 | Sensor & Mtg Group-Ground Speed | 1 |
| 10***12 | Bracket As | 1 |
| 11***05 | Harness As; (Jumper-Radar) | 1 |
108-1952 Sensor & Mtg Gp-Ground Speed
| 10***52 | Sensor & Mtg Group-Ground Speed | 1 |
| 10***12 | Bracket As | 1 |
| 11***05 | Harness As; (Jumper-Radar) | 1 |
131-5575 Sensor Gp-Ground Speed
| 10***04 | Kit-Receptacle; (4-Pin)(Start Switch) | 1 |
| 13***75 | Sensor Group-Ground Speed | 1 |
| 3E***77 | Wedge-Receptacle Lock; (4-Pin) | 1 |
132-4579 Sensor Gp-Speed
| 10***04 | Kit-Receptacle; (4-Pin)(Start Switch) | 1 |
| 13***79 | Sensor Group-Speed; (Radar) | 1 |
| 3E***77 | Wedge-Receptacle Lock; (4-Pin) | 1 |
126-2510 Socket Gp
| 11***69 | Boot | 1 |
| 11***85 | Screw; (M5x0.8x30-mm) | 2 |
| 12***10 | Socket Group | 1 |
113-6175 Solenoid Gp-Shutoff
| 11***90 | Solenoid As | 1 |
| 11***75 | Solenoid Group-Shutoff | 1 |
| 4K***88 | Seal; Adapter To Oil Pump Outlet Manifold | 1 |
110-1291 Starting Aid Gp
| 00***35 | Protector | 3 |
| 10***02 | Kit-Receptacle; (2-Pin)(Engine Sensor Wiring Harness) | 1 |
| 11***91 | Starting Aid Group | 1 |
109-5868 Starting Aid Gp
| 10***68 | Starting Aid Group | 1 |
| 12***42 | Gasket | 2 |
| 15***11 | Heater As; (Starting Aid) | 1 |
104-2288 Starting Gp
| 10***88 | Starting Group | 1 |
| 10***00 | Terminal As-Battery; (Remote Jump Start, Positive) | 1 |
| 11***70 | Cable As | 1 |
207-1509 Starting Motor Gp-Electric -Basic
| 0S***97 | Capscrew (1/4 - 28 Nf X 1 Gd8, Hex) | 5 |
| 20***86 | Kit-Solenoid; (12-Volt)(Starting Motor) | 1 |
| 20***09 | Starting Motor Group-Electric; -Basic | 1 |
146-3638 Starting Motor Gp-Electric
| 10***08 | Bolt (M10x1.5x35mm); (M10x1.5x35-mm) | 3 |
| 14***38 | Starting Motor Group-Electric | 1 |
| 20***09 | Starting Motor Group-Electric; -Basic | 1 |
154-9940 Wiring Gp-Cab
| 12***53 | Cap As | 2 |
| 13***87 | Screw; (M4x0.7x12-mm) | 18 |
| 15***40 | Wiring Group-Cab | 1 |
152-7656 Wiring Gp-Cab
| 08***83 | Washer; (0.8mm Thk) | 8 |
| 11***89 | Screw; (M6x1x20-mm) | 1 |
| 11***10 | Clamp | 3 |
152-7655 Wiring Gp-Cab
| 11***67 | Lamp Group-Working | 1 |
| 11***25 | Locknut; (#8) | 2 |
| 11***27 | Screw; (8-32x0.75-In) | 2 |
155-0025 Wiring Gp-Cab
| 11***92 | Relay; (30-Ampere)(20/30 Amp) | 4 |
| 11***90 | Fuse; (10 Amp) | 4 |
| 12***48 | Fuse-Miniature; (30 Amp) | 2 |
107-8643 Wiring Gp-Chassis
| 10***43 | Wiring Group-Chassis | 1 |
| 11***69 | Sensor-Liquid Temperature; (Tmsn Oil Temp) | 1 |
| 11***70 | Switch-Transmission Oil | 1 |
108-3283 Wiring Gp-Engine
| 10***83 | Wiring Group-Engine | 1 |
| 11***58 | Sender-Fuel Level | 1 |
| 11***68 | Switch; (Air Filter Vacuum) | 1 |
116-5682 Wiring Gp-Front Console
| 11***15 | Nut; (M4x0.7-Thd) | 2 |
| 11***52 | Spring | 2 |
| 11***54 | Knob | 1 |
113-8879 Wiring Gp-Hood
| 09***92 | Locknut; (M6x1-Thd) | 6 |
| 11***68 | Nut | 1 |
| 11***79 | Wiring Group-Hood | 1 |
116-5711 Wiring Gp-Main
| 00***73 | Terminal (To Horns) | 1 |
| 00***95 | Terminal | 2 |
| 03***76 | Connector | 6 |
Engine Arrangement
131-3542 Engine Ar
| 10***69 | Cooler Group-Engine Oil | 1 |
| 10***70 | Housing Group-Flywheel | 1 |
| 10***62 | Carrier, Lines Group-Fuel Ratio Control | 1 |
131-5109 Engine Ar
| 10***69 | Cooler Group-Engine Oil | 1 |
| 10***70 | Housing Group-Flywheel | 1 |
| 10***62 | Carrier, Lines Group-Fuel Ratio Control | 1 |
154-6050 Engine Ar
| 10***69 | Cooler Group-Engine Oil | 1 |
| 10***03 | Support Group-Engine | 1 |
| 10***04 | Alternator Group-Charging | 1 |
154-6051 Engine Ar-Core
| 10***66 | Camshaft Group | 1 |
| 10***40 | Gear Group-Front | 1 |
| 10***62 | Carrier, Lines Group-Fuel Ratio Control | 1 |
112-3842 Installation Ar-Engine
| 10***02 | Coupling Group-Flexible | 1 |
| 10***11 | Aftercooler Group-Air | 1 |
| 10***12 | Mounting Group-Engine Flexible | 1 |
134-2359 Installation Ar-Engine
| 10***02 | Coupling Group-Flexible | 1 |
| 10***11 | Aftercooler Group-Air | 1 |
| 10***12 | Mounting Group-Engine Flexible | 1 |
Frame And Body
151-6015 Counterweight Gp
| 12***62 | Support As-Front | 1 |
| 12***63 | Plate As | 1 |
| 12***66 | Counterweight | 8 |
125-0461 Counterweight Gp -Bumper
| 12***61 | Counterweight Group; -Bumper | 1 |
| 12***62 | Support As-Front | 1 |
| 12***63 | Plate As | 1 |
108-2359 Counterweight Gp-Front
| 10***59 | Counterweight Group-Front | 1 |
| 10***51 | Counterweight | 12 |
| 11***13 | Nut-Retainer | 2 |
145-0850 Counterweight Gp-Idler
| 14***34 | Counterweight-Inner | 4 |
| 14***35 | Counterweight-Outer | 12 |
| 14***50 | Counterweight Group-Idler | 1 |
151-8424 Fender Gp
| 11***69 | Shield | 2 |
| 11***70 | Support As; (Lh) | 1 |
| 11***71 | Support As; (Rh) | 1 |
116-5696 Fender Gp-Cab
| 11***56 | Nut-Retainer | 10 |
| 11***96 | Fender Group-Cab | 1 |
| 11***63 | Clip-Spring | 2 |
104-2291 Frame Gp
| 10***91 | Frame Group | 1 |
| 10***05 | Plate As; (Rh) | 1 |
| 10***06 | Plate As; (Lh) | 1 |
151-6021 Guard Gp-Fender Extension
| 14***71 | Extension-Fender; -Lh | 1 |
| 14***72 | Extension-Fender; -Rh | 1 |
| 15***21 | Guard Group-Fender Extension | 1 |
104-2319 Guard Gp-Power Train
| 10***19 | Guard Group-Power Train | 1 |
| 11***63 | Clip-Spring | 2 |
| 12***75 | Guard | 1 |
151-6019 Guard Gp-Spectator
| 14***39 | Guard As | 1 |
| 15***19 | Guard Group-Spectator | 1 |
| 15***37 | Plug | 1 |
151-8426 Hood Gp
| 09***92 | Locknut; (M6x1-Thd) | 28 |
| 11***21 | Handrail As | 1 |
| 11***61 | Bolt-Shoulder | 2 |
113-8817 Kit-Spacer
| 11***17 | Kit-Spacer | 1 |
| 11***36 | Spacer-Rear | 2 |
| 11***37 | Spacer-Front | 2 |
113-8814 Kit-Spacer
| 11***14 | Kit-Spacer | 1 |
| 11***30 | Spacer | 2 |
| 11***31 | Spacer | 2 |
113-8816 Kit-Spacer
| 11***16 | Kit-Spacer | 1 |
| 11***34 | Spacer-Rear | 2 |
| 11***35 | Spacer-Front | 2 |
119-9707 Kit-Spacer
| 11***07 | Kit-Spacer | 1 |
| 12***68 | Spacer | 2 |
| 12***69 | Spacer | 2 |
113-8815 Kit-Spacer
| 11***15 | Kit-Spacer | 1 |
| 11***32 | Spacer-Rear | 2 |
| 11***33 | Spacer-Front | 2 |
132-8625 Reflector Gp
| 13***25 | Reflector Group | 1 |
| 14***63 | Reflector; (Red) | 2 |
| 14***64 | Plate | 2 |
124-3681 Spacer -Rear
| 12***81 | Spacer; -Rear | 1 |
124-3678 Spacer -Front
| 12***78 | Spacer; -Front | 1 |
124-3680 Spacer -Front
| 12***80 | Spacer; -Front | 1 |
124-3679 Spacer -Rear
| 12***79 | Spacer; -Rear | 1 |
135-7844 Spacer Gp
| 11***32 | Spacer-Rear | 2 |
| 11***33 | Spacer-Front | 2 |
| 12***93 | Bracket | 2 |
138-0458 Spacer Gp
| 12***78 | Spacer; -Front | 2 |
| 12***79 | Spacer; -Rear | 2 |
| 12***93 | Bracket | 2 |
135-7843 Spacer Gp
| 11***30 | Spacer | 2 |
| 11***31 | Spacer | 2 |
| 12***93 | Bracket | 2 |
135-7847 Spacer Gp
| 11***36 | Spacer-Rear | 2 |
| 11***37 | Spacer-Front | 2 |
| 12***93 | Bracket | 2 |
135-7846 Spacer Gp
| 11***34 | Spacer-Rear | 2 |
| 11***35 | Spacer-Front | 2 |
| 12***93 | Bracket | 2 |
135-7840 Spacer Gp
| 12***68 | Spacer | 2 |
| 12***69 | Spacer | 2 |
| 12***93 | Bracket | 2 |
138-0459 Spacer Gp
| 11***36 | Spacer-Rear | 2 |
| 11***37 | Spacer-Front | 2 |
| 12***78 | Spacer; -Front | 2 |
151-8425 Step Gp
| 11***01 | Bolt-Socket Head; (M12x1.75x25-mm) | 3 |
| 12***17 | Bracket As | 1 |
| 15***25 | Step Group | 1 |
Fuel System
129-1102 Base Gp-Fuel Filter
| 11***23 | Insert-Fuel Filter | 1 |
| 12***01 | Valve Group-Check; -Fuel-Fuel Filter | 1 |
| 12***02 | Base Group-Fuel Filter | 1 |
105-1695 Control Gp-Fuel Injection
| 10***95 | Control Group-Fuel Injection | 1 |
| 16***56 | Control Group-Fuel Injection | 1 |
| 6V***83 | Bolt (16mm Long); (M6x1x16-mm) | 4 |
7e-9429 Control Gp-Governor
| 5C***53 | Bolt (M6x1.00x16mm); (M6x1x16mm Thk) | 1 |
| 6I***82 | Lever As | 1 |
| 6I***83 | Spring | 2 |
108-2594 Dress Gp-Engine
| 10***94 | Dress Group-Engine | 1 |
| 10***15 | Cable-Governor Control | 1 |
| 3B***05 | Pin Split Cotter | 1 |
7e-8794 Drive Gp-Gov & Transfer Pump
| 10***68 | Gear As-Drive; (44-Teeth), . Body | 1 |
| 10***85 | Lever-Shutoff; (Output) | 1 |
| 1W***65 | Ring-Retaining | 1 |
7w-4812 Fastener Gp-Fuel Inj Pump
| 1T***68 | Seal-O-Ring; (Fuel Injection Pump) | 1 |
| 6F***73 | Seal--To Top Cover On Selector Valve | 1 |
| 6V***18 | Bolt (M8x1.25x45mm); (M8x1.25x35-mm) | 3 |
138-1405 Filter & Lines Gp-Fuel
| 12***72 | Tee | 1 |
| 12***02 | Base Group-Fuel Filter | 1 |
| 13***29 | Support Assem. | 1 |
139-5495 Governor Gp-Unit Injector
| 09***74 | Bolt-Socket Head; (M5x0.8x12-mm) | 3 |
| 10***90 | Spring-Air Side | 1 |
| 10***92 | Spring-Servo | 1 |
135-7309 Governor Gp-Unit Injector
| 10***91 | Spring-Oil Side | 1 |
| 10***55 | Cam As | 1 |
| 13***09 | Governor Group-Unit Injector | 1 |
135-7311 Governor Gp-Unit Injector
| 10***91 | Spring-Oil Side | 1 |
| 10***55 | Cam As | 1 |
| 13***62 | Governor Group-Unit Injector | 1 |
113-6177 Governor Gp-Unit Injector
| 11***77 | Governor Group-Unit Injector | 1 |
| 13***16 | Lines Group-Governor Oil | 1 |
| 13***10 | Governor Group-Unit Injector | 1 |
133-3062 Governor Gp-Unit Injector
| 10***90 | Spring-Air Side | 1 |
| 10***92 | Spring-Servo | 1 |
| 10***93 | Spring-Return | 1 |
135-7310 Governor Gp-Unit Injector
| 10***91 | Spring-Oil Side | 1 |
| 11***25 | Cam As-Torque | 1 |
| 13***10 | Governor Group-Unit Injector | 1 |
113-6193 Governor Gp-Unit Injector
| 11***93 | Governor Group-Unit Injector | 1 |
| 13***16 | Lines Group-Governor Oil | 1 |
| 13***09 | Governor Group-Unit Injector | 1 |
113-6176 Governor Gp-Unit Injector
| 11***76 | Governor Group-Unit Injector | 1 |
| 13***16 | Lines Group-Governor Oil | 1 |
| 13***11 | Governor Group-Unit Injector | 1 |
101-4562 Lines Gp-Fuel Ratio Control
| 10***62 | Carrier, Lines Group-Fuel Ratio Control | 1 |
| 10***49 | Tube As-Orifice | 1 |
| 3J***54 | Packing,Preformed Part Of Kit P/N 5r***27 | 2 |
135-1716 Lines Gp-Governor Oil
| 13***16 | Lines Group-Governor Oil | 1 |
| 13***57 | Tube Assem. | 1 |
| 3J***07 | Seal Valve Assembly To; Seal- Tube Assembly To Logic Valve | 1 |
138-3924 Mounting Gp-Governor Control
| 13***23 | Bracket | 1 |
| 13***24 | Mounting Group-Governor Control | 1 |
| 8T***38 | Bolt-Plt; (M6 X 1.0 X 20) | 2 |
7e-7607 Pump Gp-Unit Injection
| 11***18 | Seal-O-Ring; (26.64mm Id) | 1 |
| 12***22 | Injector Group-Fuel | 1 |
| 13***25 | Bolt-Socket Head; (M6x1x30-mm) | 1 |
107-7734 Pump Gp-Fuel Injection
| 10***34 | Pump Group-Fuel Injection | 1 |
| 11***18 | Seal-O-Ring; (26.64mm Id) | 1 |
| 12***18 | Fuel Injector | 1 |
138-1404 Pump Gp-Fuel Prm & Prim Filter
| 09***49 | Bolt; (M8x1.25x40-mm) | 2 |
| 13***37 | Bracket As | 1 |
| 13***04 | Pump Group-Fuel Prm & Prim Filter | 1 |
149-2683 Separator Gp-Water
| 11***01 | Bowl As-Water Collection | 1 |
| 11***18 | Ring-Retaining | 1 |
| 11***19 | Nut | 1 |
124-9461 Tank Gp-Fuel
| 10***24 | Tank As-Fuel; (Front) | 1 |
| 10***51 | Tube | 1 |
| 10***62 | Cap; (Water Tank) | 1 |
109-6973 Tank Gp-Fuel
| 10***24 | Tank As-Fuel; (Front) | 1 |
| 10***62 | Cap; (Water Tank) | 1 |
| 10***63 | Shield | 1 |
Hydraulic System
137-5930 Body Gp-Coupler
| 13***30 | Body Group-Coupler | 1 |
| 13***91 | Seal-O-Ring; (0.796mm Id) | 1 |
131-7963 Control Gp-Flow
| 01***70 | Setscrew | 2 |
| 11***60 | Knob; (4 Ear) | 3 |
| 13***46 | Cable As | 3 |
131-7964 Control Gp-Flow
| 01***70 | Setscrew | 2 |
| 11***60 | Knob; (4 Ear) | 4 |
| 13***46 | Cable As | 4 |
108-8315 Cooler Gp-Hydraulic Oil
| 10***15 | Cooler Group-Hydraulic Oil | 1 |
| 11***87 | Core As-Oil Cooler | 1 |
| 5P***16 | Washer; (Hard) (8.8x20.5x2mm Thk) | 4 |
113-5598 Coupler As
| 11***98 | Coupler As | 1 |
| 11***16 | Coupling Group | 2 |
| 11***54 | Plug | 1 |
113-5616 Coupling Gp
| 11***12 | Seal | 2 |
| 11***74 | Seal-O-Ring | 1 |
| 11***16 | Coupling Group | 1 |
151-6036 Hydraulic Ar
| 03***06 | Seal (Use As Required) | 1 |
| 11***00 | Coupling | 1 |
| 11***96 | Locknut | 2 |
151-6039 Hydraulic Ar
| 14***89 | Control Group-Secondary Steering | 1 |
| 15***10 | Valve & Mtg Group-Steering | 1 |
| 15***11 | Valve & Mtg Group-Steering | 1 |
151-8418 Hydraulic Ar
| 10***20 | Drive Group-Pump | 1 |
| 10***64 | Pump & Mounting Group | 1 |
| 10***67 | Motor & Mounting Group | 1 |
108-1916 Hydraulic Ar
| 03***06 | Seal (Use As Required) | 1 |
| 10***16 | Hydraulic Ar | 1 |
| 10***05 | Pump Group-Piston | 1 |
131-0033 Kit-Coupler Body
| 13***33 | Kit-Coupler Body | 1 |
108-1951 Kit-Valve
| 10***91 | Nut-Jam; (3/4-16-Thd) | 1 |
| 10***51 | Kit-Valve | 1 |
| 11***23 | Pin-Cotter; (19mm Long) | 1 |
104-2306 Lines Gp-Hydraulic
| 10***06 | Lines Group-Hydraulic | 1 |
| 10***04 | Screen-Inlet | 1 |
| 10***08 | Valve-Check | 1 |
159-3067 Lines Gp-Secondary Steering
| 08***20 | Strainer | 1 |
| 10***76 | Hose As | 1 |
| 14***88 | Tee-Swivel | 1 |
151-6013 Lines Gp-Secondary Steering
| 08***20 | Strainer | 1 |
| 13***01 | Hose As | 1 |
| 13***61 | Sleeve-Abrasion; (93.5-cm Each) | 0 |
104-2267 Motor & Mounting Gp
| 10***67 | Motor & Mounting Group | 1 |
| 12***57 | Motor Group-Piston | 1 |
| 4S***98 | Seal-O-Ring | 1 |
104-2264 Pump & Mounting Gp
| 10***64 | Pump & Mounting Group | 1 |
| 10***03 | Pump Group-Charge | 1 |
| 12***88 | Pump Group-Piston | 1 |
148-1508 Pump Gp-Electric
| 14***08 | Pump Group-Electric | 1 |
| 14***09 | Motor-Electric | 1 |
| 14***10 | Pump-Hydraulic | 1 |
156-0926 Pump Gp-Piston
| 09***82 | Nut Self-Locking; (M8x1.25 Thd) | 2 |
| 10***85 | Bolt-Socket Head; (M16x2x130-mm) | 4 |
| 10***01 | Swashplate | 1 |
127-4588 Pump Gp-Piston
| 09***82 | Nut Self-Locking; (M8x1.25 Thd) | 2 |
| 10***85 | Bolt-Socket Head; (M16x2x130-mm) | 4 |
| 10***01 | Swashplate | 1 |
108-2905 Pump Gp-Piston
| 08***19 | Pin | 1 |
| 10***05 | Pump Group-Piston | 1 |
| 11***04 | Bolt-Socket Head; (M12x1.75x45-mm) | 4 |
127-9464 Rotary Gp-Clockwise
| 12***64 | Rotary Group-Clockwise | 1 |
| 12***93 | Ring-Retaining | 1 |
| 12***98 | Spacer | 1 |
116-5693 Tube-Hydraulic
| 11***93 | Tube-Hydraulic | 1 |
| 11***88 | Tube As-Supply | 1 |
| 11***89 | Tube-Oil | 1 |
108-1925 Valve Ar -3 With Hitch
| 10***25 | Valve Ar; -3 With Hitch | 1 |
| 11***87 | Control Group-3 With Hitch | 1 |
| 11***88 | Valve Group-Control | 1 |
108-1927 Valve Ar-4 With Hitch
| 10***27 | Valve Ar-4 With Hitch | 1 |
| 11***14 | Valve Group | 1 |
| 11***15 | Control Group-4 With Hitch | 1 |
108-4093 Valve As-Remote
| 10***93 | Valve As-Remote | 1 |
| 11***22 | Valve Group | 1 |
| 11***23 | Valve Group-Control | 1 |
108-2913 Valve As-Remote
| 10***13 | Valve As-Remote | 1 |
| 11***22 | Valve Group | 1 |
| 11***23 | Valve Group-Control | 1 |
113-5622 Valve Gp
| 11***22 | Valve Group | 1 |
| 11***33 | Ball | 1 |
| 11***36 | Seal-O-Ring | 2 |
113-5714 Valve Gp
| 10***49 | Hose (219.5 cm); (99cm Each) | 4 |
| 10***13 | Valve As-Remote | 1 |
| 11***20 | Bolt; (M16x19.2x230-mm) | 1 |
198-8342 Valve Gp-Brake Control
| 00***93 | Seal-O-Ring (Id=52.07mm); (52.07-mm Id) | 2 |
| 03***67 | Ring; (Back Up) | 1 |
| 03***33 | Seal-O-Ring; (12.42mm Id) | 1 |
113-5624 Valve Gp-Control
| 11***24 | Valve Group-Control | 1 |
| 11***33 | Ball | 1 |
| 11***41 | Housing-Primary | 1 |
113-5623 Valve Gp-Control
| 11***23 | Valve Group-Control | 1 |
| 11***33 | Ball | 4 |
| 11***41 | Housing-Primary | 1 |
112-8488 Valve Gp-Control
| 10***49 | Hose (219.5 cm); (99cm Each) | 5 |
| 10***93 | Valve As-Remote | 1 |
| 11***20 | Bolt; (M16x19.2x230-mm) | 1 |
113-5627 Valve Gp-Control
| 11***27 | Valve Group-Control | 1 |
| 11***92 | Tube | 1 |
| 11***93 | Spool | 1 |
113-5626 Valve Gp-Control
| 11***26 | Valve Group-Control | 1 |
| 11***08 | Kit-Spool | 1 |
| 11***09 | Spring | 1 |
127-9465 Valve Gp-Pump Control
| 12***62 | Housing | 1 |
| 12***65 | Valve Group-Pump Control | 1 |
| 12***23 | Seal-O-Ring | 1 |
174-9179 Valve Gp-Remote Bypass
| 12***02 | Coupler As; (Pressure) | 1 |
| 15***99 | Coupler | 1 |
| 15***83 | Valve As-Remote; (Hydraulic Power Beyond) | 1 |
113-3168 Valve Gp-Solenoid
| 03***21 | Ring-Back-Up | 1 |
| 10***02 | Kit-Receptacle; (2-Pin)(Engine Sensor Wiring Harness) | 1 |
| 11***68 | Valve Group-Solenoid | 1 |
Lubrication System
136-0805 Breather Gp
| 13***05 | Breather Group | 1 |
| 14***64 | Stud; (M8x1.25x35-mm) | 1 |
| 2W***62 | Breather As-Crankcase; (Engine) | 1 |
140-3590 Breather Gp
| 00***64 | End; (Hose) | 1 |
| 00***14 | Coupling-Pipe | 1 |
| 00***90 | Elbow | 1 |
130-9061 Fastener Gp-Oil Filter
| 13***61 | Fastener Group-Oil Filter | 1 |
| 8T***24 | Washer-To Assemble Valve As And Plates | 1 |
| 9X***98 | Studbolt; (M8x1.25x67.75mm Oal) | 1 |
7w-8798 Filler Gp-Engine Oil
| 13***19 | Seal-Integral; (Integral) | 1 |
| 5L***52 | Cap Assembly, Including:-; (Engine) | 1 |
| 5P***45 | Washer-Hard; (13.5x25.5x3-mm Thk)(Turbocharger Blanking Plate) | 4 |
104-2302 Filter & Mounting Gp
| 10***02 | Kit-Receptacle; (2-Pin)(Engine Sensor Wiring Harness) | 1 |
| 10***02 | Filter & Mounting Group | 1 |
| 10***93 | Filter Group-Oil | 1 |
117-4074 Filter Gp-Engine Oil
| 11***74 | Filter Group-Engine Oil | 1 |
| 1R***07 | Filter As-Engine Oil; (Advanced Efficiency) | 1 |
| 23***54 | Gasket | 1 |
133-1842 Fumes Disposal Gp
| 13***42 | Fumes Disposal Group | 1 |
| 4D***88 | Clip-(Slot To Fit Fastener M10 Or 3/8) | 1 |
| 4P***55 | Hose-Disposal; (Fumes Disposal) | 1 |
128-7955 Gauge Gp-Oil Level (Dipstick)
| 10***45 | Tube As-Oil Gauge | 1 |
| 12***55 | Gauge Group-Oil Level (Dipstick) | 1 |
| 13***16 | Gauge-Oil Level (Dipstick) | 1 |
131-5401 Gauge Gp-Oil Level (Dipstick)
| 10***45 | Tube As-Oil Gauge | 1 |
| 13***01 | Gauge Group-Oil Level (Dipstick) | 1 |
| 13***02 | Gauge-Oil Level; (Dipstick)(Engine Oil) | 1 |
7c-6519 Lines Gp-Engine Oil
| 3P***56 | Seal-O-Ring; (21.82mm Id) | 2 |
| 4W***32 | Elbow-Outlet | 1 |
| 6V***40 | Bolt (M8x1.25x25mm); (M8x1.25x25-mm) | 4 |
117-5125 Lines Gp-Engine Oil
| 11***25 | Lines Group-Engine Oil | 1 |
| 3P***56 | Seal-O-Ring; (21.82mm Id) | 2 |
| 4W***32 | Elbow-Outlet | 1 |
7c-2476 Lines Gp-Turbocharger Oil
| 11***42 | Adapter | 1 |
| 1S***57 | Gasket; (Turbocharger-Oil Supply) | 1 |
| 3J***07 | Seal Valve Assembly To; Seal- Tube Assembly To Logic Valve | 1 |
117-3305 Lines Gp-Turbocharger Oil
| 11***05 | Lines Group-Turbocharger Oil | 1 |
| 11***42 | Adapter | 1 |
| 14***78 | Elbow, 90°,-6 Orb /-6 Orfs; (90°) (-6 Orbx-6orfs) | 1 |
4w-2195 Pump Gp-Engine Oil
| 11***24 | Pump Group-Engine Oil | 1 |
| 4W***95 | Pump Group-Engine Oil; Engine Oil Pump Group | 1 |
| 6V***15 | Bolt; (M10x1.5x75-mm) | 2 |
119-2924 Pump Gp-Engine Oil
| 10***05 | Spring | 1 |
| 11***24 | Pump Group-Engine Oil | 1 |
| 2W***77 | Body As-Oil Pump | 1 |
Machine Arrangement
151-8423 Base Unit Ar-Certification
| 11***42 | Installation Ar-Engine | 1 |
| 11***15 | Film; (55, Lh)(Lh/55) | 1 |
| 11***16 | Film; (55, Rh)(Rh/55) | 1 |
151-8420 Base Unit Ar-Certification
| 10***88 | Starting Group | 1 |
| 10***91 | Frame Group | 1 |
| 10***19 | Guard Group-Power Train | 1 |
151-8421 Base Unit Ar-Certification
| 11***11 | Film; (Lh/35) | 1 |
| 11***12 | Film; (Rh/35) | 1 |
| 13***09 | Engine Ar | 1 |
151-8422 Base Unit Ar-Certification
| 11***13 | Film-Lh; (45) | 1 |
| 11***14 | Film-Rh; (45) | 1 |
| 13***42 | Engine Ar | 1 |
153-9150 Conversion Ar-Machine
| 15***14 | Lighting Group-Flood | 1 |
| 15***50 | Conversion Ar-Machine | 1 |
153-9152 Conversion Ar-Machine
| 15***52 | Conversion Ar-Machine | 1 |
| 15***53 | Lighting Group-Flood | 1 |
| 15***72 | Film-Warning; (Towing, Power Take-Off Operation) | 1 |
134-2358 Installation Ar
| 10***02 | Coupling Group-Flexible | 1 |
| 10***11 | Aftercooler Group-Air | 1 |
| 10***12 | Mounting Group-Engine Flexible | 1 |
Operator Station
114-5949 Air Conditioner Gp
| 11***49 | Air Conditioner Group | 1 |
| 11***49 | Core As-Heater | 1 |
| 11***50 | Resistor | 1 |
151-8429 Cab Ar
| 11***16 | Seat Group | 1 |
| 11***41 | Console Group; -Rh | 1 |
| 13***77 | Module Group-Instrument Panel | 1 |
151-8430 Cab Gp
| 11***87 | Cab As | 1 |
| 11***73 | Wiper Group-Front | 1 |
| 11***84 | Floor Mat-Cab | 1 |
151-8435 Cab Gp
| 09***42 | Screw; (Machine) (M6x1.0x16mm) | 2 |
| 10***60 | Mirror Group | 1 |
| 11***90 | Wiper Group-Window | 1 |
114-9484 Compressor Gp-Refrigerant
| 11***84 | Compressor Group-Refrigerant | 1 |
| 11***16 | Coil As | 1 |
| 7T***32 | Plug Assem.; (3/8-24) | 1 |
113-8741 Console Gp -Rh
| 10***15 | Cable-Governor Control | 1 |
| 11***51 | Screw; (M4x8-mm) | 1 |
| 11***54 | Nut; (M6x1-Thd) | 10 |
113-8742 Console Gp -Rh
| 11***36 | Rivet | 1 |
| 11***00 | Cover-Switch | 2 |
| 11***93 | Clamp | 4 |
112-8487 Control Gp-3 With Hitch
| 10***91 | Nut-Jam; (3/4-16-Thd) | 1 |
| 11***69 | Washer; (0.531x0.94x0.09-In Thk) | 4 |
| 11***98 | Nut | 1 |
113-5715 Control Gp-4 With Hitch
| 10***91 | Nut-Jam; (3/4-16-Thd) | 1 |
| 11***69 | Washer; (0.531x0.94x0.09-In Thk) | 4 |
| 11***98 | Nut | 1 |
148-0244 Control Gp-Transmission
| 11***88 | Kit-Shift Detent | 1 |
| 11***90 | Kit-Shift Handle | 1 |
| 14***44 | Control Group-Transmission | 1 |
116-5687 Cover-Front Console
| 11***15 | Nut; (M4x0.7-Thd) | 2 |
| 11***54 | Nut; (M6x1-Thd) | 8 |
| 11***89 | Screw; (M6x1x20-mm) | 4 |
116-5695 Door As
| 11***95 | Door As | 1 |
| 11***94 | Door As | 1 |
| 11***95 | Glass-Cab; (Door) | 1 |
117-6894 Door As
| 11***94 | Door As | 1 |
| 11***97 | Screw; (No 8x1-In) | 1 |
| 11***99 | Spring-Gas | 1 |
116-5690 Fastener Gp-Operator Console
| 11***90 | Fastener Group-Operator Console | 1 |
| 11***82 | Clip | 7 |
| 11***83 | Gasket | 1 |
114-5884 Floor Mat-Cab
| 11***17 | Washer; (0.20x0.87x0.06 In Thk) | 2 |
| 11***41 | Bolt; (10-24x.75 In) | 6 |
| 11***84 | Floor Mat-Cab | 1 |
108-1904 Floorplate Ar
| 10***04 | Floorplate Ar | 1 |
| 11***11 | Protector-Mat | 1 |
| 12***19 | Seal-Floormat Filler | 1 |
116-5697 Glass & Hdwr Gp
| 11***72 | Window As-Side | 1 |
| 11***97 | Glass & Hdwr Group | 1 |
| 11***27 | Glass-Front | 1 |
117-6927 Glass-Front
| 11***27 | Glass-Front | 1 |
| 11***31 | Glass-Lh | 1 |
| 11***32 | Glass-Rh | 1 |
116-5686 Heater & Air Conditioner Gp
| 11***52 | Spring | 4 |
| 11***54 | Knob | 2 |
| 11***49 | Air Conditioner Group | 1 |
124-9460 Heater & Air Conditioner Gp
| 11***84 | Clamp | 2 |
| 11***84 | Strap | 1 |
| 11***87 | Kit-Air Conditioner | 1 |
116-5694 Kit-Air Conditioner
| 11***94 | Kit-Air Conditioner | 1 |
| 11***33 | Hose As; (No. 10) | 1 |
| 11***34 | Hose As; (No. 6) | 1 |
112-8404 Kit-Electronic Draft Control
| 11***04 | Kit-Electronic Draft Control | 1 |
| 11***29 | Potentiometer As | 1 |
| 11***33 | Knob | 1 |
113-5670 Lockout As-Remote
| 11***55 | Spring-Retainer | 2 |
| 11***42 | Ball | 2 |
| 11***53 | Retainer-Spring | 1 |
108-1960 Mirror Gp
| 10***60 | Mirror Group | 1 |
| 11***60 | Washer | 4 |
| 11***61 | Screw; (M8x1.25x22mm) | 4 |
133-8977 Module Gp-Instrument Panel
| 12***20 | Kit-Lamp | 1 |
| 13***77 | Module Group-Instrument Panel | 1 |
107-9350 Mounting Gp-Cab
| 10***50 | Mounting Group-Cab | 1 |
| 12***27 | Washer; (20.5x104x10-mm Thk) | 4 |
| 18***53 | Washer; (20.5x57.2x8-mm Thk) | 8 |
123-6667 Mounting Gp-Fire Extinguisher
| 12***67 | Mounting Group-Fire Extinguisher | 1 |
| 3T***09 | Bracket | 1 |
| 5P***67 | Capscrew, Hex Head (3/8 Nc X 5/8) | 4 |
112-8893 Parts Gp-Cab
| 11***93 | Parts Group-Cab | 1 |
| 11***27 | Potentiometer | 1 |
| 11***29 | Potentiometer As | 2 |
112-8962 Parts Gp-Cab
| 11***27 | Potentiometer | 1 |
| 11***29 | Potentiometer As | 3 |
| 11***30 | Switch; (3 Point Hitch) | 2 |
116-5678 Pedal Gp-Inching
| 03***55 | Locknut; (5/16-18-Thd)(Marked X) | 1 |
| 09***75 | Pin-Spring | 1 |
| 09***17 | Ring-Retaining | 1 |
116-5684 Radio Gp
| 11***15 | Nut; (M4x0.7-Thd) | 8 |
| 11***54 | Nut; (M6x1-Thd) | 2 |
| 11***89 | Screw; (M6x1x20-mm) | 2 |
152-7657 Roof Gp-Inner
| 11***54 | Nut; (M6x1-Thd) | 17 |
| 11***89 | Screw; (M6x1x20-mm) | 4 |
| 11***85 | Screw; (M6x1x30-mm) | 4 |
116-5679 Roof Gp-Outer
| 11***79 | Roof Group-Outer | 1 |
| 11***31 | Washer-Nylon | 2 |
| 11***37 | Plug | 2 |
113-8618 Seat As
| 11***18 | Seat As | 1 |
| 11***19 | Compressor & Valve As | 1 |
| 11***20 | Kit-Wiring Harness Service | 1 |
113-8616 Seat Gp
| 11***16 | Seat Group | 1 |
| 11***17 | Spacer | 4 |
| 11***18 | Seat As | 1 |
116-5688 Steering Column As
| 11***54 | Screw; (No 6x0.625-In) | 4 |
| 11***56 | Steering Column As | 1 |
| 11***57 | Steering Wheel | 1 |
116-5556 Steering Column As
| 11***56 | Steering Column As | 1 |
| 11***70 | Spring-Gas | 1 |
| 11***71 | Shaft As | 1 |
116-5681 Trim Gp-Interior
| 11***54 | Nut; (M6x1-Thd) | 4 |
| 11***89 | Screw; (M6x1x20-mm) | 2 |
| 11***85 | Screw; (M6x1x30-mm) | 2 |
114-5972 Window As-Side
| 11***72 | Window As-Side | 1 |
| 11***73 | Handle | 1 |
| 11***74 | Strip; (Rh Side Only) | 1 |
117-6928 Window-Rear
| 09***31 | Nut; (M12x1.75-Thd) | 1 |
| 11***83 | Cover-Dust | 1 |
| 11***28 | Window-Rear | 1 |
150-9059 Wiper & Washer Gp-Window
| 11***51 | Tie-Cable | 1 |
| 11***52 | Spring | 2 |
| 11***53 | Switch; (Rear Wiper-On/Off) | 1 |
114-5873 Wiper Gp-Front
| 11***52 | Spring | 2 |
| 11***54 | Knob | 1 |
| 11***73 | Wiper Group-Front | 1 |
117-6990 Wiper Gp-Window
| 11***51 | Tie-Cable | 1 |
| 11***56 | Pump As | 2 |
| 11***57 | Hose | 1 |
Power Train
112-4835 Axle Gp-Rear
| 00***16 | Ring | 1 |
| 09***31 | Dowel | 8 |
| 11***35 | Axle Group-Rear | 1 |
114-5691 Bearing Gp-Power Take-Off
| 11***91 | Bearing Group-Power Take-Off | 1 |
| 2H***12 | Ball Bearing | 1 |
| 8C***29 | Ring-Retaining | 1 |
125-6767 Clutch As -6th
| 07***35 | Seal-Piston | 1 |
| 11***64 | Piston-Clutch | 1 |
| 11***67 | Washer; (0.586x2.44x0.315-In Thk) | 1 |
114-5762 Clutch As -2nd
| 07***35 | Seal-Piston | 2 |
| 11***62 | Clutch As; -2nd | 1 |
| 11***63 | Clutch As | 1 |
163-0430 Clutch As -7th
| 11***53 | Piston-Clutch | 1 |
| 11***56 | Washer; (76.3x101.6x3.2mm Thk)(Lube Shutoff) | 1 |
| 11***57 | Spring-Clutch | 8 |
163-0432 Clutch As -7th
| 11***53 | Piston-Clutch | 1 |
| 11***56 | Washer; (76.3x101.6x3.2mm Thk)(Lube Shutoff) | 1 |
| 11***57 | Spring-Clutch | 8 |
114-5804 Clutch As -4th
| 07***35 | Seal-Piston | 2 |
| 11***64 | Piston-Clutch | 2 |
| 11***67 | Washer; (0.586x2.44x0.315-In Thk) | 2 |
114-5782 Clutch As -3rd
| 07***35 | Seal-Piston | 2 |
| 11***64 | Piston-Clutch | 2 |
| 11***67 | Washer; (0.586x2.44x0.315-In Thk) | 2 |
125-6768 Clutch As -8th
| 07***35 | Seal-Piston | 1 |
| 11***64 | Piston-Clutch | 1 |
| 11***67 | Washer; (0.586x2.44x0.315-In Thk) | 1 |
108-1911 Dress Gp
| 10***11 | Dress Group | 1 |
| 11***10 | Clamp | 1 |
| 11***14 | Cap-Oil Filler | 1 |
119-3865 Drive Gp-Creeper
| 11***65 | Drive Group-Creeper | 1 |
| 11***73 | Spring | 2 |
| 11***74 | Lock Washer; 8 X 16 X 1,4 mm, Piston | 2 |
103-4920 Drive Gp-Pump
| 10***65 | Gear; (37-Teeth) | 1 |
| 10***20 | Drive Group-Pump | 1 |
| 10***72 | Housing-Pump | 1 |
143-8628 Drive Gp-Wheel
| 10***91 | Hub | 1 |
| 10***93 | Hub | 1 |
| 10***21 | Retainer | 1 |
108-1900 Final Drive Gp
| 10***00 | Final Drive Group | 1 |
| 11***35 | Axle Group-Rear | 1 |
| 11***85 | Power Take-Off Group | 1 |
108-1907 Gauge Gp-Oil Level (Dipstick)
| 03***42 | Elbow Hose Assembly To | 1 |
| 10***07 | Gauge Group-Oil Level (Dipstick) | 1 |
| 11***71 | Gauge-Oil Level (Dipstick); (Transmission) | 1 |
119-3864 Gear Gp
| 11***59 | Shaft As; (1st Front) | 1 |
| 11***60 | Bearing As | 1 |
| 11***61 | Bearing | 1 |
113-8907 Gear Gp
| 11***07 | Gear Group | 1 |
| 11***59 | Shaft As; (1st Front) | 1 |
| 11***60 | Bearing As | 1 |
119-3880 Gear Gp-Planetary
| 11***80 | Gear Group-Planetary | 1 |
| 11***86 | Gear-Sun; (35 Teeth)(2nd) | 1 |
| 11***88 | Gear-Sun; (35 Teeth)(1st) | 1 |
114-5798 Housing Gp-Extension
| 00***16 | Ring | 2 |
| 10***91 | Shaft | 1 |
| 10***87 | Retainer-Bearing | 1 |
107-8620 Housing Gp-Extension
| 00***16 | Ring | 2 |
| 10***20 | Housing Group-Extension | 1 |
| 10***91 | Shaft | 1 |
139-8441 Housing Gp-Output
| 11***81 | Dowel | 6 |
| 11***82 | Gear-Shaft; (42-Teeth) | 1 |
| 11***84 | Retainer-Bearing | 1 |
139-8445 Housing Gp-Output
| 0S***94 | Bolt (1 In. Long 3/8 In. Dia.); Plate Assembly To Support Assembly | 16 |
| 11***81 | Dowel | 6 |
| 11***82 | Gear-Shaft; (42-Teeth) | 1 |
104-2303 Lines Gp-Transmission
| 10***03 | Lines Group-Transmission | 1 |
| 10***07 | Valve As-Cooler Bypass | 1 |
| 11***04 | Tube As | 1 |
119-3890 Planetary Gp-Transmission
| 11***90 | Planetary Group-Transmission | 1 |
| 11***92 | Cage-Planetary | 1 |
| 11***93 | Gear-Planetary; (22 Teeth) | 6 |
119-3891 Planetary Gp-Transmission
| 11***91 | Planetary Group-Transmission | 1 |
| 11***94 | Bearing-Needle | 12 |
| 11***95 | Washer-Thrust | 12 |
107-8614 Shaft Gp-Input
| 0S***79 | Bolt 5.08 cm(2 In.) Long | 4 |
| 10***14 | Shaft Group-Input | 1 |
| 10***09 | Yoke | 1 |
108-1915 Transmission Ar
| 10***14 | Shaft Group-Input | 1 |
| 10***15 | Transmission Ar | 1 |
| 11***32 | Switch-Creeper | 1 |
108-1914 Transmission Ar
| 10***14 | Shaft Group-Input | 1 |
| 10***20 | Housing Group-Extension | 1 |
| 10***14 | Transmission Ar | 1 |
139-8442 Transmission As
| 11***07 | Gear Group | 1 |
| 11***91 | Bearing Group-Power Take-Off | 1 |
| 11***04 | Valve Group-Electric | 1 |
139-8440 Transmission As
| 11***91 | Bearing Group-Power Take-Off | 1 |
| 11***04 | Valve Group-Electric | 1 |
| 11***78 | Valve Group-Creeper | 1 |
108-8111 Universal Joint Gp
| 0S***84 | Cap Screw (2 1/4" Long) | 4 |
| 10***10 | Tube | 1 |
| 10***11 | Universal Joint Group | 1 |
117-6978 Valve Gp-Creeper
| 11***13 | Coil-Solenoid | 1 |
| 11***78 | Valve Group-Creeper | 1 |
| 11***08 | Cap; (Solenoid) | 1 |
114-5904 Valve Gp-Electric
| 00***57 | Plug | 3 |
| 11***04 | Valve Group-Electric | 1 |
| 11***05 | Valve As-Electric | 1 |
Service Equipment And Supplies
119-9689 Box Gp-Tool
| 03***64 | Plate-Relief | 3 |
| 11***15 | Tool Box | 1 |
| 11***89 | Box Group-Tool | 1 |
151-6022 Chock Gp-Wheel
| 15***59 | Chock-Wheel | 1 |
| 15***22 | Chock Group-Wheel | 1 |
| 15***30 | Bracket | 1 |
151-6033 Film Gp
| 11***94 | Film-Caution | 1 |
| 11***99 | Film-Remote Cylinder | 2 |
| 11***00 | Film-Cover | 1 |
152-7654 Film Gp-Cab
| 11***50 | Film-Light Switch | 1 |
| 11***52 | Film-Air Conditioner | 1 |
| 11***64 | Film-Wiper | 1 |
134-0226 Plate Gp-Certification
| 11***74 | Plate-Machine Certification | 1 |
| 13***26 | Plate Group-Certification | 1 |
| 8T***30 | Fasteners-Tack | 4 |
Undercarriage
146-7586 Belt Tensioner Gp
| 10***07 | Kit-Connecting Plug; (2-Pin)(Electronic Control) | 1 |
| 10***12 | Seal; (Interface) | 1 |
| 10***70 | Cylinder | 1 |
143-8679 Belt Tensioner Gp
| 10***07 | Kit-Connecting Plug; (2-Pin)(Electronic Control) | 1 |
| 10***12 | Seal; (Interface) | 1 |
| 10***70 | Cylinder | 1 |
143-8712 Frame Gp-Track Roller -Lh
| 13***05 | Frame As-Lh | 1 |
| 14***42 | Guard As | 1 |
| 14***44 | Guard | 1 |
143-8647 Frame Gp-Track Roller
| 13***04 | Frame As; (Rh) | 1 |
| 14***41 | Guard As | 1 |
| 14***43 | Guard | 1 |
139-2773 Gauge Ar-Track
| 10***42 | Support Group-Undercarriage | 1 |
| 10***00 | Final Drive Group | 1 |
| 13***73 | Gauge Ar-Track | 1 |
153-9038 Hook Gp-Tow
| 15***11 | Lock Pin | 2 |
| 15***13 | Slider As | 1 |
| 15***15 | Pin-Drawbar | 2 |
153-9037 Hook Gp-Tow
| 11***15 | Retainer | 1 |
| 15***27 | Pin-Clevis | 1 |
| 15***29 | Plate | 1 |
153-9039 Hook Gp-Tow
| 11***15 | Retainer | 1 |
| 15***27 | Pin-Clevis | 1 |
| 15***29 | Plate | 1 |
153-9036 Hook Gp-Tow
| 15***11 | Lock Pin | 2 |
| 15***13 | Slider As | 1 |
| 15***14 | Frame As | 1 |
143-8660 Idler Gp-Front
| 00***31 | Cup-Bearing | 2 |
| 09***47 | Nut-Thin; (M16x2 Thd) | 2 |
| 09***04 | Locknut; (M20x2.5-Thd) | 2 |
143-8676 Roller Gp-Track
| 05***03 | Washer; (40.46x69.85x7.37-mm Thk) | 2 |
| 10***77 | Shaft As | 1 |
| 10***79 | Cover As | 2 |
104-2342 Support Gp-Undercarriage
| 10***42 | Support Group-Undercarriage | 1 |
| 10***37 | Bracket | 1 |
| 10***41 | Pin | 2 |
1r-1160 Track Gp-Rubber
| 1R***13 | Track-Rubber; (Belt) | 2 |
| 1R***60 | Track Group-Rubber | 1 |
1r-1161 Track Gp-Rubber
| 1R***14 | Track-Rubber; (Belt) | 2 |
| 1R***61 | Track Group-Rubber | 1 |
143-8677 Undercarriage Ar
| 14***28 | Drive Group-Wheel | 1 |
| 14***47 | Frame Group-Track Roller | 1 |
| 14***60 | Idler Group-Front | 1 |
135-1836 Undercarriage Ar
| 13***36 | Undercarriage Ar | 1 |
| 14***77 | Undercarriage Ar | 1 |
| 14***78 | Undercarriage Ar | 1 |
143-8678 Undercarriage Ar
| 14***28 | Drive Group-Wheel | 1 |
| 14***60 | Idler Group-Front | 1 |
| 14***76 | Roller Group-Track | 3 |
55 serial number reference
The PIN plate on the Challenger 55 is riveted to the tractor frame, usually on the right side near the cab entry step or on the front frame rail below the radiator grille - check the OMM for the exact plate location diagram. The serial number reads as a 3-character letter prefix followed by a sequential number; the prefix identifies the specific model/production-run configuration, and the number after it tells where that unit falls in the build sequence for that prefix.
| Prefix | Identifies | Notes |
|---|---|---|
| 7DM | Challenger 55 rubber-track row-crop tractor, Caterpillar-badged (North America channel) | Earliest production run, 1996-1998 build tractors. Cat 3126 6-cylinder turbocharged diesel, 7.2L, MUI fuel system. Same chassis family as Challenger 35/45. |
| 6NN | Challenger 55 rubber-track row-crop tractor, Caterpillar-badged (North America channel) | Later 1990s production run. Cat 3126 engine. Covered by its own dedicated parts and service manual set. |
| AEN | Challenger 55 rubber-track row-crop tractor, Caterpillar-badged (North America channel) | Late production run, last Caterpillar-badged model-year before the line moved to AGCO/Claas branding. Cat 3126 engine. Dedicated parts catalog exists under this prefix. |
| 5DK | Challenger 55 rubber-track row-crop tractor, Claas-badged (Europe/export channel) | Parallel Claas-branded parts and service documentation to the Caterpillar-badged run; same chassis and Cat 3126 engine. Parts catalog for this prefix also spans Challenger 35 and 45, since all three models share this chassis family. |
| 7TZ | Challenger 55 rubber-track row-crop tractor, Claas-badged (Europe/export channel) | Dedicated parts catalog exists for this prefix. Cat 3126 engine, same generation as the Caterpillar-badged builds. |
| 3SM | Challenger 55 rubber-track row-crop tractor, Claas-badged (Europe/export channel) | 1998 build reference found. Dedicated service/repair and parts manuals exist under this prefix. Cat 3126 engine. |
Frequently asked questions
What engine does the Cat Challenger 55 use?
The Cat 3126, a turbocharged 7.2 L inline-6 diesel with mechanical unit injection - not the later HEUI-pump 3126 used in on-highway and some construction applications. Gross output runs around 179 kW (240 hp), with roughly 168 kW (225 hp) at the PTO and 142 kW (191 hp) at the drawbar.
What is the operating weight of the Challenger 55?
Approximately 11,800-12,000 kg (26,000-26,500 lb) in standard track and hitch configuration. One lighter spec listing near 10,320 kg (22,752 lb) exists for a stripped-down build - treat that as configuration-dependent and confirm the exact build before using it for parts or transport planning.
What replaced the Cat Challenger 55?
Within Caterpillar's own lineup, the larger 65/75/85/95 Challenger models took over, built on the 3176-family engine. In 2002 Caterpillar sold the entire rubber-track Challenger tractor program to AGCO, which continued it as the MT series - so the 55's true long-term successor is the AGCO Challenger MT line.
What 55 owners discuss
How do owners rate the Challenger 55 overall, and how does it stack up against the MT-series that replaced it?
Mixed but generally fair for the era. Owners like the pulling ability for its weight class and the flotation/traction of the rubber-belt undercarriage in wet or soft ground, including standing water. Complaints center on engine and track life running shorter than expected, plus fuel consumption on the higher side for the horsepower class. Consensus is the engine was tuned hard to hit its rated output, so it does not tolerate abuse well. As a grain-cart tractor with a light load it holds up fine; run it hard on tillage year after year and wear shows up sooner. Later MT-series Challengers are consistently described as the better long-term machine, at a higher purchase cost.
What hydraulic and drivetrain quirks come up most for the 3126-powered 55?
The Funk-design transmission is the recurring weak point. Once shift rail wear sets in, the gear can jump out under load, then refuse to re-engage cleanly, sometimes binding into two gears at once. A steady operator who avoids constant shifting gets more hours out of the box before an overhaul is needed. Power-shuttle engagement failures show the same root cause: worn rails and forks. On the hydraulic side, remote valve stack O-rings wear and start weeping, and flow-control cables can stiffen or seize with age, more so on earlier production before Cat revised the valve stack. Track tensioning cylinders can also bleed down internally over time due to a failing accumulator or cylinder seal, tripping a low-tension warning light even with no visible external leak. Have a dealer or transmission shop confirm before a shift-rail or valve-stack rebuild - cheaper to fix early than after something breaks.
What undercarriage and track wear patterns are typical for the Mobil-trac system on this tractor?
Belt tension runs roughly 75 kN (about 17,000 lbf) depending on belt width and whether the tensioner is spring-only or spring-plus-nitrogen - varies by configuration. No routine grease points on the undercarriage itself, which is a plus, but sprockets, idlers, mid-rollers, and the tensioner/reaction-arm hardware do wear and eventually need attention on higher-hour machines. Reaction arm bearing failure is a known pattern in the 4,000-6,000 hour range on units that saw heavy drawbar pulling, and it shows up as a track that will not hold tension. Misaligned guide blocks or rollers cause premature edge wear and flat-spotting on the belt and idler wheels. Wear rate depends heavily on soil type: abrasive granite or sandy loam chews through belts much faster than alluvial ground. Clearing packed soil off rollers and idlers at the end of the day helps a lot. Any belt tracking or reaction-arm play should get a dealer look before it turns into a dropped track.
What's the reputation of the 3126 engine specifically in this tractor, and does it differ from other 3126 applications?
The 55 uses the mechanical unit injector (MUI) version of the 3126, not the later HEUI-pump variant common in on-highway and some construction applications - worth confirming before applying HEUI troubleshooting steps, since the fuel systems are different. Community consensus flags this fuel system as the engine's weak point: injector-to-cup interface leakage lets fuel bleed past the injector into the rail area, and injector synchronization after any injector work needs a dial gauge - an injector set even slightly off can show up as a knock, misfire, or runaway condition. Many engines want injector attention by somewhere around 5,000 hours. Running factory Cat fuel filters instead of aftermarket is widely credited with extending injector and pump life. The engine bay is tight, so any real fuel-system teardown usually means pulling the hood and fuel tank, which adds labor cost versus a more open engine layout. Any suspected rod knock versus injector-timing knock should be confirmed by a dealer with a stethoscope and injector trim check before tearing into the bottom end.
What electrical and sensor gremlins show up most often on the Challenger 55?
Gear-engagement fault codes tracing back to the Electronic Transmission Control (ETC) module and its wiring are a recurring complaint - corroded or loose connector pins at the module are a common first find, and cleaning and reseating those terminals resolves a fair share of no-shift or won't-move complaints before any parts are replaced. This generation's control modules (Electronic Draft Control, Electronic Monitor Center, Electronic Transmission Control) can also be reflashed with later factory software, which cleared up some nuisance faults for owners. Warm no-restart complaints get traced to the fuel shutoff solenoid wiring and connector more often than the solenoid itself - check for corrosion and loose pins there first. Some owners also report a harness routed near the cab floor access panel rubbing against a hydraulic line over time, causing intermittent grounds; worth a visual check if you're chasing random electrical faults with no other explanation. Any ECM reflash or module-level diagnosis is worth having a dealer verify before condemning a module.
What should I check before buying a used Challenger 55?
Given the engine's reputation, pull an oil sample before money changes hands - cheap insurance against a rod or injector problem you can't see from the seat. Run the engine and listen for knock with a mechanic's stethoscope, and check exhaust smoke color under load. Walk the tracks: look for uneven or edge wear pointing to misaligned guide blocks or rollers, check idler and mid-roller condition, and check for play in the tensioner/reaction-arm assembly, especially on machines with heavy pulling history in the 4,000-6,000 hour range. Cycle the transmission through every gear and both directions of the power shuttle, feeling for binding, delayed engagement, or jumping out of gear under load - a sign of worn shift rails. Check the hydraulic remote stack for weeping O-rings and test that flow-control cables move freely rather than sticking. Pull the air filter and check its condition against the machine's stated service interval. Run the PTO and listen for knock or roughness. Ask whether any control module software updates were applied, and check overall condition - cracked or weathered paint, cab glass, and grille condition are decent proxies for how the machine was stored and maintained. Have a dealer do a full pre-purchase inspection on the engine and transmission before finalizing, especially if hours are on the higher side.
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 55. Related factory variants of the same model family:
55
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