Caterpillarchallenger
Caterpillar 75
Maintenance schedule, common problems & OEM parts breakdown
The Caterpillar Challenger 75 is a rubber-tracked agricultural crawler tractor built for high-horsepower tillage, planting, and drawbar work. It sat one step up from the Challenger 65 in Cat's Mobil-Trac rubber-track lineup and ran from 1991 to 2001 across four sub-generations: the original 75 (1991-1992), 75C (1993-1996), 75D (1996-1997), and 75E (1998-2001). Each series used a Caterpillar 3176-family 10.3 L (629 cu in) turbocharged inline six-cylinder diesel, rated 242-254 kW (325-340 hp) gross depending on generation, paired with a 10-speed full-powershift transmission and closed-center hydraulics. Operating weight runs roughly 15,100-16,200 kg (33,300-35,700 lb) and fuel capacity roughly 770-1,060 L (203-280 US gal), both varying by series. Configurations included different rubber-track widths, standard or high-flow hydraulic packages, and optional PTO and three-point hitch fitment for hay and mowing work alongside the tractor's core tillage role.
Across the run Caterpillar raised gross output from 325 hp to 340 hp, increased hydraulic pump flow from about 98 L/min (26 gpm) to about 151 L/min (40 gpm), and grew fuel capacity on later series to extend field time between fills, while refining the hydrostatic steering and cab package from generation to generation. Caterpillar exited the agricultural equipment business in 2002, selling the line to AGCO, which continued the Challenger name on its own MT-series tracked tractors built around a different engine family. That makes the 75 series a closed chapter in Cat's own lineup rather than a stepping stone to a Cat-badged successor. In the used and parts market it stays relevant as an affordable entry point into rubber-track flotation, and because its 3176-family engine was used broadly across Cat trucks, excavators, and other equipment, engine and driveline parts support stays wider than the tractor's own production numbers would suggest.
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 75 specifications
Engine
| Engine model | Caterpillar 3176, 10.3 L (629 cu in) inline-6 diesel, turbocharged and aftercooled. Same base engine family across the 75, 75C, 75D and 75E builds (1991-2001), retuned per series. |
| Bore x stroke | 125 mm x 140 mm (4.92 in x 5.51 in) |
| Compression ratio | 16:1 |
| Rated engine speed | 2100 rpm |
| Gross engine power | 325 hp (242 kW) on 75 and 75C (1991-1996); 330 hp (246 kW) on 75D (1996-1997); 340 hp (254 kW) on 75E (1998-2001) |
| PTO power (tested) | About 300-331 hp (224-247 kW), varies by series |
| Emissions tier | Predates formal off-highway emissions-tier certification; no EPA/EU tier rating published for this engine in this application |
Weights
| Operating weight - 75 | 15,590 kg (34,370 lb) |
| Operating weight - 75C | 15,107 kg (33,305 lb) |
| Operating weight - 75D | 16,202 kg (35,720 lb) |
| Operating weight - 75E | 15,785 kg (34,800 lb) |
| Maximum ballasted weight (75E) | Up to 18,597 kg (41,000 lb) with full counterweight and attachments |
| Ground pressure | About 0.36-0.37 bar (5.2-5.4 psi), depends on track width fitted |
Dimensions
| Overall transport length | 589-599 cm (232-236 in), varies by series |
| Overall width | 284-304 cm (112-120 in), depends on track gauge/width option |
| Overall height (cab roof) | 325-340 cm (128-134 in) |
| Overall height (exhaust stack) | Up to 365 cm (144 in) |
| Wheelbase | 269-272 cm (106-107.1 in) |
| Track gauge (centerline to centerline) | 228 cm (90 in) |
| Ground/drawbar clearance | 35-38 cm (14-15 in) |
| Track shoe width options | 62-90 cm (24.5-35 in), varies by series and configuration |
Performance
| Travel speed range | 4.2-29.3 km/h (2.6-18.2 mph) via 10 forward / 2 reverse full-powershift transmission |
| Drawbar power (tested) | 187-196 kW (251-263 hp) |
| PTO power (tested) | 224-247 kW (300-331 hp) |
| Rear PTO speed | 1000 rpm, independent type on later series |
| Rear 3-point hitch lift capacity | 5,579-5,984 kg (12,300-13,194 lb) on 75D/75E; Category III/IV hitch |
| Steering | Hydrostatic differential steering, no clutch/brake steering |
Service capacities (summary)
| Fuel tank | 768 to 1060 L (203-280 US gal), varies notably by series |
| Hydraulic system reservoir | 68-110 L (18-29 US gal), varies by series |
| Hydraulic pump flow | 98-151 L/min (26-40 gpm), varies by series and option |
| Cooling system | About 41.6 L (44 US qt) coolant capacity |
| Engine oil | Approx. 28-30 L (30 US qt) per the base 3176 engine spec sheet; confirm exact figure for the tractor-specific sump before service |
Values vary by configuration, region, and serial range — confirm against your machine before planning transport or lifts.
75 fluids & capacities
| System | Capacity | Recommended fluid |
|---|---|---|
| Engine crankcase (with filter) | 30.0 L (31.7 US qt / 7.9 US gal) | Cat DEO (Diesel Engine Oil). Cat's multigrade guidance for this era of 3176 diesel calls for SAE 10W-30 in cold ambient and SAE 15W-40 for temperate-to-warm operation; straight 30-weight acceptable in stable warm climates. |
| Cooling system | 56.8 L (15.0 US gal / 60 US qt) | Cat DEAC (Diesel Engine Antifreeze/Coolant), glycol-based, mixed to the standard 50/50 ratio; Cat ELC (Extended Life Coolant) is the later-approved drop-in replacement for this engine family. |
| Fuel tank | varies by series/configuration: 791–833 L (209–220 US gal) on the base 75 and 75C/75D; the later 75E carries a larger tank near 1,060 L (280 US gal) | No. 2-D diesel fuel per Cat fuel specification; low-sulfur diesel recommended where available. |
| Transmission (powershift, drive-train compartment) | 56.8 L (15.0 US gal / 60 US qt) | Cat TDTO (Transmission/Drive Train Oil), straight-graded 10W on this Challenger line rather than the 15W-30 multigrade common on competing brands; a heavier grade can be special-ordered for high-ambient or heavy-draft use. |
| Hydraulic system and reservoir | varies by series/configuration: roughly 68–110 L (18–29 US gal) depending on model year and cooler/valve configuration | Cat HYDO, straight-graded 10W as shipped from the factory; dealers will fill a heavier hydraulic oil on request when the tractor runs high-draw implements or hot climates. |
| Final drives (each) | not separately documented for this chassis — the rubber-belt undercarriage integrates final-drive gearing with the transmission/drive-train housing rather than a stand-alone serviceable compartment | Follow the drive-train (TDTO) fluid spec above; verify fill points and interval with a dealer before service. |
| Grease (chassis lubrication points) | spec only — no reservoir capacity applies | Cat Multipurpose Grease (MPGM), NLGI 2 lithium-complex, for standard-duty chassis points; Cat Extreme Application or 3Moly grease as the heavy-load/high-temperature alternative for pivot and track-roller points. |
Capacities are refill values from factory literature — always fill to the dipstick/sight gauge, not the number.
Caterpillar 75 maintenance schedule
| Service interval | Tasks |
|---|---|
| Every 50 h |
|
| Every 250 h |
|
| Every 500 h |
|
| Every 1,000 h |
|
| Every 2,000 h |
|
| Every 3,000 h |
|
| Every 6,000 h |
|
Servicing the 75 beyond the schedule
Predictive Maintenance & Fluid Analysis
Run oil, coolant, and MTO fluid samples on a set interval instead of guessing. The 3176/3176B/3176C shares one closed-center hydraulic-transmission-brake circuit, so a single MTO sample flags hydrostatic-steering wear, powershift clutch wear, and wet-brake wear metal before a failure. Track coolant SCA (supplemental coolant additive) levels with test strips to protect the 3176's wet cylinder liners from cavitation pitting. Sample early and often on high-hour trades — undercarriage and final-drive condition rarely match the hour meter on a tractor this age.
Corrective & Common Repairs
Expect mid-roller and bogie-wheel bearing failures first — leaking duo-cone-style seals show up as grease weeping around the wheel hub and are the most common undercarriage repair on this platform. The rubber-track drive relies on friction between the drive wheel and belt, not a positive gear mesh, so slipping or belt walk usually traces to low track tension or a worn drive lug rather than the engine. Check the 3176's fan-drive shaft bearing on tractors with a rough idle vibration, and inspect hydrostatic steering motors for lag or wander.
Overhaul & Rebuild Points
Budget for undercarriage rebuild before engine rebuild — rubber belts, mid-rollers, and roller-frame bushings wear out faster than the 3176 does, especially on tractors that logged road miles between fields. The 10-speed powershift clutch packs are the next major wear item; slipping shifts or a harsh 1-2 shift point to clutch wear, not the valve body. Turbocharger and unit-injector rebuilds on the 3176/3176B/3176C follow normal high-hour diesel wear patterns. Final-drive gear sets rarely fail outright but should be sampled before a rebuild is scheduled.
Seasonal & Environment Servicing
Chaff and residue load the radiator, oil cooler, and A/C condenser fast during harvest — blow them out daily in dusty field conditions, not on the standard interval. Rubber track tension changes with temperature; recheck sag more often in cold weather since the belt stiffens and contracts. Use the ether starting aid or a jacket water heater below freezing rather than prolonged cranking on the 3176. Relieve track tension before long winter storage to stop the belt from flat-spotting, and purge mid-roller grease fittings after muddy work.
75 common service parts
| Part number | Part | Notes | |
|---|---|---|---|
| 8C-8902 | Film | Lubrication service | Check fitment → |
| 7X-0293 | Bolt-For Transmission Filter Return Line | Scheduled service item | Check fitment → |
| 9X-2205 | Filter Kit (Includes Screw, Filter Assem., Gaskets & Valve) | Scheduled service item | Check fitment → |
Always confirm against your machine's serial number — cross-check any part in Heavy Parts AI before ordering.
75 fault codes & troubleshooting
| Code | Meaning | Likely cause | What to do |
|---|---|---|---|
| 100-1 | Engine oil pressure low - pressure has dropped below the ECM's minimum protection point for the current engine speed, triggering a warning or shutdown. | Low oil level, plugged suction screen or filter, worn oil pump, oil dilution/wrong viscosity, or a failing oil pressure sensor. | Shut the engine down, check oil level and look for external leaks, then check the oil pressure sensor and wiring before restarting. |
| 110-0 | Engine coolant temperature above normal operating range - engine may derate or shut down to protect itself. | Low coolant level, debris-packed radiator or screen, failed thermostat, weak water pump, or fan drive not engaging. | Shut down and let the engine cool, check coolant level and clean the radiator/screen, then confirm the cooling fan is engaging before returning to work. |
| 164-2 | Injector actuation (high-pressure oil) pressure erratic - the signal that drives the HEUI injectors is unstable or out of range, causing rough idle or power loss. | Faulty injection actuation pressure control valve, failing pressure sensor, air/aeration in the high-pressure oil supply, or a damaged harness connector. | Inspect the high-pressure oil supply and actuation valve wiring first, then test the actuation pressure sensor and control valve with the diagnostic service tool. |
| 190-8 | Engine speed/timing sensor signal abnormal - the ECM is losing or misreading the crank/cam timing pulse, which can cause hard starting, stalling, or a no-start. | Worn sensor-to-tone-ring air gap, sensor tip wear or contamination, or a damaged harness back to the engine ECM. | Check the sensor air gap and connector for corrosion first, verify harness continuity to the ECM, then replace the sensor if the signal stays abnormal. |
| 247-9 | Data link communication abnormal update rate - the engine ECM is losing or has an irregular exchange of data with other tractor control modules over the machine data link. | Damaged or corroded data link wiring/connectors, a module losing power or ground, or another module on the same link dropping offline. | Check data link wiring and connector pins between the engine ECM and other modules, then verify power and ground at each module before further diagnosis. |
| 253-12 | Personality module (flash file/software) fault - the ECM's programmed configuration is missing, corrupted, or mismatched to the machine. | An interrupted or incomplete ECM reflash, corrupted ECM memory, or the wrong flash file loaded during prior service work. | Reload the correct flash file with the diagnostic service tool, and replace the ECM if the reflash fails to clear the fault repeatedly. |
| 168-4 | System/battery voltage below normal (a related 168-3 code covers voltage above normal) - the ECM supply voltage is out of range, which can cause hard starting or trigger other unrelated codes. | Weak or failing battery, corroded or loose battery cables, a faulty alternator/voltage regulator, or poor chassis grounds. | Load-test the battery and check charging system output, then clean and tighten battery and ground connections before condemning the alternator. |
Codes and remedies are general guidance for this model family — always confirm with diagnostic tooling and your dealer before major repairs.
75 attachments & work tools
Heavy tillage tools (drawbar-pulled)
Primary use for the 75-class Challenger crawler was heavy primary and secondary tillage: chisel plows, disc rippers, and field cultivators pulled off the rear drawbar rather than three-point mounted. Class is sized for wide, deep-tillage toolbars in the 250-340 hp draft range, matching gross engine output across the 75/75C/75D/75E variants.
Three-point hitch / mounted implements
Rear three-point hitch was factory-optional (not standard) on this crawler line, sold with Category III or IV/IVN ball ends depending on order. Where fitted, rear lift capacity runs about 13,200 lbs on later units; earlier/base units without the hitch used drawbar-only mounting, so hitch presence varies by configuration and model year.
PTO-driven implements
Independent rear PTO was also a factory option (base units could be ordered with no PTO), running at 1000 rpm on a large-frame 1-3/4 in (44 mm) splined shaft suited to high-draw implements like forage or manure equipment. Not all surviving units have PTO fitted, so verify before matching a PTO implement.
Towed / elevating scraper hitching
These crawlers were commonly set up as scraper tractors, using a heavy-duty multi-ear drawbar with a shortened hanger that pulls the hitch pin in close for better weight transfer. This configuration is recommended for tandem-hitched scrapers and single scrapers above roughly 15 cubic yards struck capacity; a standard ag drawbar is used for lighter tillage tow loads.
Drawbar / hitch mounting hardware
Standard rear mounting is a swinging clevis-type drawbar (roughly 33 in / 840 mm of lateral swing) rather than a quick-coupler bucket/tool system, since this is an agricultural tillage platform, not a construction quick-hitch machine. Heavy-duty reinforced drawbar kits are available as a factory or aftermarket upgrade for scraper and high-draft-load work.
Hydraulic remote circuits
Closed-center hydraulic system with 4 remote valves is consistent across the 75/75C/75E line, but pump flow scales up with each revision, from roughly 26 gpm (98 lpm) on early 75 units to about 40 gpm (151 lpm) on the later 75E. This flow drives hitch-mounted or drawn implement cylinders; match implement hydraulic demand to the specific serial/year, not a single flat number.
Rubber track undercarriage options
Track belt width was offered across roughly 25 in, 30 in, and up to 36 in within the 65-95 Challenger crawler family, with the exact width varying by specific 75-series year (documented as about 27.5 in on early 75, 30 in on 75C, and 25 in on 75E). Wider tracks lower ground pressure for soft/wet field flotation; narrower tracks suit road transport and higher-traction pull work, so treat width as series/year dependent, not fixed.
Front ballast / counterweighting
Front counterweight blocks are a factory-available option used to balance the tractor for high-tongue-weight loads such as towed scrapers. Recommended practice is to start with roughly half the available counterweight, then adjust so the track keeps full ground contact under load for maximum drawbar pull.
All 75 assemblies by section
Every catalogued assembly group for the Caterpillar 75. Open an assembly to preview the parts inside — full OEM part numbers are available in Heavy Parts AI.
Air Inlet And Exhaust System
7e7921 Aftercooler Gp-Air
| 7E***21 | Aftercooler Group-Air | 1 |
7e7929 Air Cleaner Gp
| 7E***29 | Air Cleaner Group | 1 |
4p2880 Cartridge Gp-Turbocharger*R
| 4P***80 | Cartridge Group-Turbocharger | 1 |
4p2881 Cartridge Gp-Turbocharger*R
| 4P***81 | Cartridge Group-Turbocharger | 1 |
1054900 Duct Gp-Air
| 10***00 | Duct Group-Air | 1 |
7e7920 Dust Ejector Gp
| 7E***20 | Dust Ejector Group | 1 |
7e7919 Extension Gp-Air Cleaner
| 7E***19 | Extension Group-Air Cleaner | 1 |
7e7917 Extension Gp-Exhaust
| 7E***17 | Extension Group-Exhaust | 1 |
4e1488 Indicator Gp (Filter Change)
| 4E***88 | Indicator Group-Filter Change | 1 |
7e8424 Lines Gp-Air (Aftercooler)
| 7E***24 | Lines Group-Air | 1 |
7e7918 Lines Gp-Air
| 7E***18 | Lines Group-Air | 1 |
7c1757 Manifold Gp-Exhaust
| 7C***57 | Manifold Group-Exhaust | 1 |
7e7886 Manifold Gp-Exhaust
| 7E***86 | Manifold Group-Exhaust | 1 |
4p9427 Manifold Gp-Inlet
| 4P***27 | Manifold Group-Inlet | 1 |
7c1758 Manifold Gp-Inlet
| 7C***58 | Manifold Group-Inlet | 1 |
7e7916 Muffler Gp
| 7E***16 | Muffler Group | 1 |
4e6427 Shield Gp-Exhaust
| 4E***27 | Shield Group-Exhaust | 1 |
4p2870 Turbocharger Gp*R
| 4P***70 | Turbocharger Group | 1 |
4p0624 Turbocharger Gp
| 4P***24 | Turbocharger Group | 1 |
4p4018 Turbocharger Gp
| 4P***18 | Turbocharger Group | 1 |
4p4019 Turbocharger Gp
| 4P***19 | Turbocharger Group | 1 |
Basic Engine
6i1533 Camshaft Gp-Single
| 6I***33 | Camshaft Group | 1 |
7e8425 Camshaft Gp-Single
| 7E***25 | Camshaft Group | 1 |
4p9916 Cover Gp-Air Compressor
| 4P***16 | Cover Group-Air Compressor | 1 |
7c1741 Cover Gp-Air Compressor
| 7C***41 | Cover Group-Air Compressor | 1 |
7c1740 Cover Gp-Hydraulic Pump Drive
| 7C***40 | Cover Group-Hydraulic Pump Drive | 1 |
9y4057 Cover Gp-Valve Mechanism
| 9Y***57 | Cover Group-Valve Mechanism | 1 |
9y4054 Crankshaft Gp
| 9Y***54 | Crankshaft Group | 1 |
6i1006 Cylinder Block As
| 6I***06 | Cylinder Block As | 1 |
4p9140 Cylinder Block Gp
| 4P***40 | Cylinder Block Group | 1 |
7c8568 Cylinder Block Gp
| 7C***68 | Cylinder Block Group | 1 |
4p7269 Cylinder Head As*R
| 4P***69 | Cylinder Head As | 1 |
1012066 Cylinder Head As
| 10***66 | Cylinder Head As | 1 |
1011537 Cylinder Head As*R
| 10***37 | Cylinder Head As | 1 |
7c8575 Cylinder Head Gp
| 7C***75 | Cylinder Head Group | 1 |
1012067 Cylinder Head Gp*R
| 10***67 | Cylinder Head Group | 1 |
4p7268 Cylinder Head Gp*R
| 4P***68 | Cylinder Head Group | 1 |
7e7882 Damper & Pulley Gp
| 7E***82 | Damper & Pulley Group | 1 |
9y3661 Drive Gp-Accessory
| 9Y***61 | Drive Group-Accessory | 1 |
7e7679 Drive Gp-Fan
| 7E***79 | Drive Group-Fan | 1 |
7e7784 Flywheel Gp
| 7E***84 | Flywheel Group | 1 |
7e8429 Gear Gp-Front
| 7E***29 | Gear Group-Front | 1 |
7c1749 Housing Gp-Flywheel
| 7C***49 | Housing Group-Flywheel | 1 |
9y3594 Housing Gp-Front
| 9Y***94 | Housing Group-Front | 1 |
1025838 Housing Gp-Front
| 10***38 | Housing Group-Front | 1 |
4p5535 Kit-Bearing Repair
| 4P***04 | Bearing-Sleeve 38.5 mm Offset Hole | 1 |
| 4P***05 | Bearing-Sleeve 30 mm Wide | 4 |
| 4P***06 | Bearing-Sleeve 38.5 mm Center Hole | 1 |
7c1795 Lifter Gp
| 7C***95 | Lifter Group-Valve | 1 |
7c8271 Lifting Gp
| 7C***71 | Lifting Group-Engine | 1 |
7e7675 Mounting Gp-Engine
| 7E***75 | Mounting Group-Engine | 1 |
7e7678 Mounting Gp-Fan Drive
| 7E***78 | Mounting Group-Fan Drive | 1 |
9y4070 Pan Gp-Oil
| 9Y***70 | Pan Group-Oil | 1 |
6i1175 Pan Gp-Oil
| 6I***75 | Pan Group-Oil | 1 |
9y0213 Piston & Rod Gp-6 Required
| 9Y***13 | Piston & Rod Group | 1 |
7e4844 Plug Gp
| 7E***44 | Plug Group-Cylinder Block | 1 |
7e7914 Pulley Gp
| 7E***14 | Pulley Group | 1 |
1004384 Pulley Gp-Auxiliary Drive
| 10***84 | Pulley Group-Auxiliary Drive | 1 |
7e9583 Pulley Gp-Fan Drive
| 7E***83 | Pulley Group-Fan Drive | 1 |
7w7818 Rocker Arm Gp-Valve
| 7W***18 | Rocker Arm Group | 1 |
7c8572 Seal Gp-Crankshaft
| 7C***72 | Seal Group-Crankshaft | 1 |
7e7673 Support Gp-Engine (Front)
| 7E***73 | Support Group-Engine; -Front | 1 |
7c1738 Valve Mechanism Gp
| 7C***38 | Valve Mechanism Group | 1 |
Braking System
8r0753 Brake Gp-Hydraulic Caliper Service
| 8R***53 | Brake Group-Hydraulic Caliper Service | 1 |
3w5071 Brake Gp-Parking
| 3W***71 | Brake Group-Parking | 1 |
3w5068 Brake Gp-Service
| 3W***68 | Brake Group-Service | 1 |
4e1028 Cylinder Gp-Master
| 4E***28 | Cylinder Group-Master | 1 |
9u4794 Cylinder Gp-Master
| 9U***94 | Cylinder Group-Master | 1 |
4e8509 Lines Gp-Service Brake-Part 2 Of 2
| 4E***09 | Lines Group-Service Brake | 1 |
3w5207 Lines Gp-Brake-Part 2 Of 3
| 3W***07 | Lines Group-Service Brake | 1 |
4e8509 Lines Gp-Service Brake-Part 1 Of 2
| 4E***09 | Lines Group-Service Brake | 1 |
3w5207 Lines Gp-Brake-Part 3 Of 3
| 3W***07 | Lines Group-Service Brake | 1 |
3w5207 Lines Gp-Brake-Part 1 Of 3
| 3W***07 | Lines Group-Service Brake | 1 |
Cooling System
7w5058 Fan Gp-Suction
| 7W***58 | Fan Group-Suction | 1 |
4p1498 Coolant Conditioner Gp
| 4P***98 | Coolant Conditioner Group | 1 |
7e4054 Coolant Conditioner Gp
| 7E***54 | Coolant Conditioner Group | 1 |
8r9787 Cooler Ar-Implement Hydraulic
| 4E***74 | Pump & Mounting Group | 1 |
| 7E***31 | Cooler Group-Oil | 1 |
| 8R***61 | Lines Group-Oil Cooler | 1 |
9u4287 Cooler Ar-Implement Hydraulic
| 4E***74 | Pump & Mounting Group | 0 |
| 4L***54 | Capscrew; (3/8-16x21 In) (Gd8) (Hex Hd) (4-Roller) | 0 |
| 4S***62 | Clip 25.4mm(1 In.)Width | 0 |
4p3755 Cooler Gp-Engine Oil
| 4P***55 | Cooler Group-Engine Oil | 1 |
7e4131 Cooler Gp-Oil
| 7E***31 | Cooler Group-Oil | 1 |
7e4132 Cooler Gp-Oil (Power Steering)
| 7E***32 | Cooler Group-Oil | 1 |
4p3757 Cooler Gp-Transmission Oil
| 4P***57 | Cooler Group-Transmission Oil | 1 |
6n9548 Drive Gp-Pump
| 6N***48 | Drive Group-Pump | 1 |
4n3586 Heater Gp-Jacket Water
| 4N***86 | Heater Group-Jacket Water; (120v) | 1 |
1w1361 Heater Gp-Jacket Water
| 1W***61 | Heater Group-Jacket Water | 1 |
4p9756 Housing & Regulator Gp
| 4P***56 | Housing & Regulator Group | 1 |
7e7883 Regulator Gp
| 7E***83 | Housing & Regulator Group | 1 |
7e7885 Lines Gp-Coolant
| 7E***85 | Lines Group-Coolant | 1 |
8r7861 Lines Gp-Oil Cooler
| 8R***61 | Lines Group-Oil Cooler | 1 |
4p3756 Lines Gp-Water
| 4P***56 | Lines Group-Water | 1 |
4p9387 Lines Gp-Water
| 4P***87 | Lines Group-Water | 1 |
9y4162 Lines Gp-Water (Pump Inlet)
| 9Y***62 | Lines Group-Water | 1 |
4e0174 Pump & Mounting Gp
| 1L***68 | Ring-Retaining | 1 |
| 2D***34 | Bolt-Socket Head; (3/8-16x1-In) | 8 |
| 4E***74 | Pump & Mounting Group | 1 |
9y4161 Pump Gp-Water
| 9Y***61 | Pump Group-Water | 1 |
1025844 Pump Gp-Water
| 10***44 | Pump Group-Water | 1 |
7e8554 Pump Gp-Water*R
| 7E***54 | Pump Group-Water | 1 |
7e7335 Radiator Gp (Folded Core)
| 7E***35 | Radiator Group | 1 |
7e7330 Radiator Gp (Folded Core)
| 7E***30 | Radiator Group | 1 |
Differential Steering System
5g8820 Control Gp-Steering-Part 2 Of 3
| 5G***20 | Control Group-Steering | 1 |
8y0168 Control Gp-Steering-Part 1 Of 2
| 8Y***68 | Control Group-Steering | 1 |
8y0168 Control Gp-Steering-Part 2 Of 2
| 8Y***68 | Control Group-Steering | 1 |
5g8820 Control Gp-Steering-Part 1 Of 3
| 5G***20 | Control Group-Steering | 1 |
5g8820 Control Gp-Steering-Part 3 Of 3
| 5G***20 | Control Group-Steering | 1 |
3w5067 Final Drive Gp
| 3W***67 | Final Drive Group | 1 |
4e8506 Final Drive Gp
| 4E***06 | Final Drive Group | 1 |
3w5087 Lines Gp-Pump-Part 1 Of 2
| 3W***87 | Lines Group-Pump | 1 |
4e8519 Lines Gp-Pump-Part 1 Of 2
| 4E***19 | Lines Group-Pump | 1 |
3w5087 Lines Gp-Pump-Part 2 Of 2
| 3W***87 | Lines Group-Pump | 1 |
4e8519 Lines Gp-Pump-Part 2 Of 2
| 4E***19 | Lines Group-Pump | 1 |
3w5086 Motor & Mounting Gp
| 3W***86 | Motor & Mounting Group | 1 |
| 4K***75 | Bolt-12 Point Head 38.1mm (1.501in) Long | 4 |
| 4S***98 | Seal-O-Ring | 1 |
9t5426 Motor Gp-Piston*X
| 9T***26 | Motor Group-Piston; Motor Gp-Piston | 1 |
6e4345 Pump Gp-Gear
| 6E***45 | Pump Group-Gear | 1 |
6e1288 Pump Gp-Gear
| 6E***88 | Pump Group-Gear | 1 |
9t5751 Rotating Gp-Motor
| 9T***51 | Rotating Group-Motor | 1 |
9t4908 Rotating Gp-Pump
| 9T***08 | Rotating Group-Pump | 1 |
9t1823 Valve & Mounting Gp
| 9T***23 | Valve & Mounting Group | 1 |
9t8435 Valve Gp-Pilot
| 9T***35 | Valve Group-Pilot | 1 |
9t4880 Valve Gp-Pilot
| 9T***80 | Valve Group-Pilot | 1 |
9t5533 Valve Gp-Pilot
| 9T***33 | Valve Group-Pilot | 1 |
9t4904 Valve Gp-Pressure Control
| 9T***04 | Valve Group-Pressure Control | 1 |
1082146 Guard Gp
| 10***21 | Guard As-Front-Rh | 1 |
| 10***22 | Guard As-Front-Lh | 1 |
| 10***23 | Guard As-Rear-Rh | 1 |
9u0963 Guard Gp-Final Drive
| 9U***63 | Guard Group-Final Drive | 1 |
| 9U***64 | Guard-Lh | 2 |
| 9U***65 | Guard-Rh | 2 |
6e3340 Head Gp-Pump
| 6E***40 | Head Group-Pump | 1 |
8r7907 Lines Gp-Steering-Part 1 Of 3
| 8R***07 | Lines Group-Steering | 1 |
8r7907 Lines Gp-Steering-Part 3 Of 3
| 8R***07 | Lines Group-Steering | 1 |
8r7907 Lines Gp-Steering-Part 2 Of 3
| 8R***07 | Lines Group-Steering | 1 |
7t7927 Planetary Gp-Differential Steering-Part 2 Of 3
| 7T***27 | Planetary Group-Differential Ster | 1 |
8e7805 Planetary Gp-Differential Steering-Part 3 Of 3
| 8E***05 | Planetary Group-Differential Ster | 1 |
7t7927 Planetary Gp-Differential Steering-Part 1 Of 3
| 7T***27 | Planetary Group-Differential Ster | 1 |
8e7805 Planetary Gp-Differential Steering-Part 1 Of 3
| 8E***05 | Planetary Group-Differential Ster | 1 |
8e7805 Planetary Gp-Differential Steering-Part 2 Of 3
| 8E***05 | Planetary Group-Differential Ster | 1 |
7t7927 Planetary Gp-Differential Steering-Part 3 Of 3
| 7T***27 | Planetary Group-Differential Ster | 1 |
8r7905 Pump & Mounting Gp (Steering)
| 8R***05 | Pump & Mounting Group | 1 |
4e8719 Pump & Mounting Gp-Steering
| 4E***19 | Pump & Mounting Group | 1 |
6e1826 Pump Gp-Piston (Slipper)
| 6E***26 | Pump Group-Piston | 1 |
6e0383 Valve Gp-Flow Control & Relief
| 6E***83 | Valve Group-Flow Control & Relief | 1 |
Drawbar, Three Point Hitch And Pto
8r7134 Control & Mounting Gp-Part 1 Of 2
| 8R***34 | Control & Mounting Group; Mounting & Control Gp | 1 |
8r7134 Control & Mounting Gp-Part 2 Of 2
| 8R***34 | Control & Mounting Group; Mounting & Control Gp | 1 |
3w5102 Control Gp-Power Take-Off
| 3W***02 | Control Group-Power Take-Off; Control Gp-Power Take-Off | 1 |
3w5096 Quick Coupler Gp (Hitch)
| 3W***96 | Coupler Group-Quick; Coupler Gp-Quick | 1 |
9t9517 Cylinder Gp-Hitch Lift (Chg 02)
| 9T***17 | Cylinder Group-Hitch Lift | 1 |
9t9517 Cylinder Gp-Hitch Lift (Chgs 00-01)
| 9T***17 | Cylinder Group-Hitch Lift | 1 |
3w5104 Drawbar Gp
| 3W***04 | Drawbar Group; Drawbar Gp | 1 |
9u1695 Drawbar Gp-Swinging
| 9U***95 | Drawbar Group-Swinging | 1 |
3w5022 Drawbar Gp-Swinging
| 3W***22 | Drawbar Group-Swinging | 1 |
7t3000 Drive Gp-Power Take-Off
| 7T***00 | Drive Group-Power Take-Off | 1 |
3w5055 Hitch Ar
| 3W***55 | Hitch Ar | 1 |
| 3W***91 | Hitch Group-3 Point; Hitch Gp-3 Point | 1 |
| 3W***95 | Lines Group-Hydraulic; Lines Gp-Hydraulic 1 | 1 |
8r4820 Hitch Ar (Field Installlation)
| 3W***91 | Hitch Group-3 Point; Hitch Gp-3 Point | 1 |
| 3W***95 | Lines Group-Hydraulic; Lines Gp-Hydraulic 1 | 1 |
| 3W***96 | Coupler Group-Quick; Coupler Gp-Quick | 1 |
3w5091 Hitch Gp-3 Point
| 3W***91 | Hitch Group-3 Point; Hitch Gp-3 Point | 1 |
3w5095 Lines Gp-Hydraulic-Part 2 Of 2
| 3W***95 | Lines Group-Hydraulic; Lines Gp-Hydraulic 1 | 1 |
3w5079 Lines Gp-Hydraulic
| 3W***79 | Lines Group-Hydraulic | 1 |
3w5095 Lines Gp-Hydraulic-Part 1 Of 2
| 3W***95 | Lines Group-Hydraulic; Lines Gp-Hydraulic 1 | 1 |
3w6838 Lines Gp-Hydraulic (Four Circuit)
| 3W***38 | Lines Group-Hydraulic; Lines Gp-Hydraulic 4 | 1 |
3w5103 Lines Gp-Power Train Oil
| 3W***03 | Lines Group-Power Train Oil; Lines Gp-Power Train Oil | 1 |
4e7866 Link Gp-Lift
| 4E***66 | Link Group | 1 |
8r0657 Link Gp-Pitch Control
| 8R***57 | Link Group | 1 |
4e7872 Link Gp-Pitch Control
| 4E***72 | Link Group | 1 |
3w9400 Link Gp-Lift
| 3W***00 | Link Group; Link Gp | 1 |
3w5462 Mounting Gp-Power Take Off
| 3W***62 | Mounting Group-Power Take-Off; Mounting Gp-Power Take-Off | 1 |
4e4498 Power Take-Off Ar (Field Conversion)
| 3W***20 | Power Take-Off Group-Rear; Power Take-Off Gp-Rear | 1 |
| 3W***01 | Shaft Group-Power Take-Off; Shaft Gp-Power Take-Off | 1 |
| 3W***02 | Control Group-Power Take-Off; Control Gp-Power Take-Off | 1 |
8r7940 Power Take-Off Ar
| 3W***20 | Power Take-Off Group-Rear; Power Take-Off Gp-Rear | 1 |
| 3W***01 | Shaft Group-Power Take-Off; Shaft Gp-Power Take-Off | 1 |
| 3W***02 | Control Group-Power Take-Off; Control Gp-Power Take-Off | 1 |
3w5020 Power Take-Off Gp-Rear
| 3W***20 | Power Take-Off Group-Rear; Power Take-Off Gp-Rear | 1 |
3w5101 Shaft Gp-Power Take Off
| 3W***01 | Shaft Group-Power Take-Off; Shaft Gp-Power Take-Off | 1 |
3w5023 Support Gp-Drawbar
| 3W***23 | Support Group-Drawbar | 1 |
8r4819 Lines & Valve Gp
| 2K***99 | Seal-Interface Between Inlet Manifold | 2 |
| 3W***91 | Tube As | 1 |
| 5G***30 | Tube As | 1 |
6t4739 Valve Gp-Modulating
| 6T***39 | Valve Group-Modulating | 1 |
9w0664 Valve Gp-Modulating
| 9W***64 | Valve Group-Modulating; Valve Gp-Modulating | 1 |
1u1100 Valve Gp-Pressure Reducing
| 1U***00 | Valve Group-Pressure Reducing | 1 |
Electrical System
9x7153 Control Gp-Electronic
| 9X***53 | Control Group-Electronic | 1 |
3e3790 Control Gp-Electronic*R
| 3E***90 | Control Group-Electronic | 1 |
3e7763 Control Gp-Electronic
| 3E***63 | Control Group-Electronic; (Ground Speed Sensor) | 1 |
9x3333 Control Gp-Electronic (Ground Speed Sensor)
| 9X***33 | Control Group-Electronic | 1 |
6t7160 Lamp Gp
| 6T***60 | Lamp Group | 1 |
9w2408 Lamp Gp
| 9W***08 | Lamp Group; (R.H.) | 1 |
9w2407 Lamp Gp
| 9W***07 | Lamp Group; (L.H.) | 1 |
3w5106 Lighting Gp-Cab & Rops
| 3W***06 | Lighting Group-Cab & Rops | 1 |
3w5097 Sender Gp
| 2Y***22 | Lockwasher | 1 |
| 3E***42 | Switch As-Low Fuel-Sump Tank | 1 |
| 3E***03 | Sensor-Fuel Level-R.H. Rear Fuel Cell | 1 |
8r6700 Sensor & Mounting Gp
| 8R***00 | Sensor & Mounting Group | 1 |
3w5160 Sensor & Mounting Gp
| 3W***60 | Sensor & Mounting Group; Mounting & Sensor Gp | 1 |
3e7863 Starting Motor Gp-Electric
| 3E***63 | Starting Motor Group-Electric | 1 |
8c3592 Starting Motor Gp-Electric
| 8C***92 | Starting Motor Group-Electric | 1 |
9y7129 Starting Motor Gp-Electric (12 Volt)
| 4H***69 | Gasket Starter Mtg Part Of Kit P/N 5r***25 | 1 |
| 8C***92 | Starting Motor Group-Electric | 1 |
| 8S***32 | Bolt; (12 Point Head) (5/8-11x1.75in) | 3 |
8c3592 Starting Motor Gp-Electric (12 Volt)
| 8C***92 | Starting Motor Group-Electric | 1 |
8c3593 Starting Motor Gp-Electric*R (12 Volt)
| 8C***93 | Starting Motor Group-Electric | 1 |
3w5105 Switch Gp
| 3W***05 | Switch Group | 1 |
9x9096 Alternator Gp-Charging*R
| 9X***96 | Alternator Group-Charging | 1 |
7e7913 Alternator Gp-Charging (115 Ampere)
| 7E***13 | Alternator Group-Charging | 1 |
8r4584 Battery Gp
| 8R***84 | Battery Group | 1 |
4p0508 Control & Mounting Gp
| 4P***08 | Control & Mounting Group | 1 |
4p9434 Control & Mounting Gp
| 4P***34 | Control & Mounting Group | 1 |
7e6771 Control & Mounting Gp (243 Kilowatt)
| 7E***71 | Control & Mounting Group | 1 |
3e5472 Control Gp-Electric
| 3E***72 | Control Group-Electrical | 1 |
4e0642 Fastener Gp
| 4E***42 | Fastener Group | 1 |
9x9009 Guard Gp-Alternator
| 9X***09 | Guard Group-Alternator | 1 |
4e7484 Lighting Gp-Part 1 Of 2
| 4E***84 | Lighting Group | 1 |
4e7484 Lighting Gp-Part 2 Of 2
| 4E***84 | Lighting Group | 1 |
4e0202 Monitor Ar-True Ground Speed Sensor
| 3E***90 | Control Group-Electronic | 1 |
| 3W***97 | Sender Group; Sender Gp | 1 |
| 3W***60 | Sensor & Mounting Group; Mounting & Sensor Gp | 1 |
4p9874 Sensor Gp-Electronic
| 4P***74 | Sensor Group-Electronic | 1 |
4p9429 Sensor Gp-Electronic
| 4P***29 | Sensor Group-Electronic | 1 |
4p0500 Sensor Gp-Electronic
| 4P***00 | Sensor Group-Electronic | 1 |
7c8590 Sensor Gp-Electronic
| 7C***90 | Sensor Group-Engine | 1 |
2w8918 Magnetic Pickup As
| 2W***18 | Sensor Group-Speed; -Engine Timing | 1 |
1029029 Sensor Gp-Speed
| 10***29 | Sensor Group-Speed; -Timing-Engine Speed | 1 |
8r7941 Starting Aid Gp-Ether
| 8R***41 | Starting Aid Group-Ether | 1 |
4e0444 Wiring Gp-Cab-Part 4 Of 5
| 4E***44 | Wiring Group-Cab | 1 |
4e0444 Wiring Gp-Cab-Part 5 Of 5
| 4E***44 | Wiring Group-Cab | 1 |
4e0444 Wiring Gp-Cab-Part 3 Of 5
| 4E***44 | Wiring Group-Cab | 1 |
4e0444 Wiring Gp-Cab-Part 1 Of 5
| 4E***44 | Wiring Group-Cab | 1 |
4e0444 Wiring Gp-Cab-Part 2 Of 5
| 4E***44 | Wiring Group-Cab | 1 |
4p0499 Wiring Gp-Electronic Control
| 4P***99 | Wiring Group-Electronic Control | 1 |
9y4185 Wiring Gp-Electronic Control
| 9Y***85 | Wiring Group-Electronic Control | 1 |
4p9428 Wiring Gp-Electronic Control
| 4P***28 | Wiring Group-Electronic Control | 1 |
8r4583 Wiring Gp-Vehicle-Part 3 Of 6
| 8R***83 | Wiring Group-Machine | 1 |
8r4583 Wiring Gp-Vehicle-Part 2 Of 6
| 8R***83 | Wiring Group-Machine | 1 |
8r4583 Wiring Gp-Vehicle-Part 5 Of 6
| 8R***83 | Wiring Group-Machine | 1 |
8r4583 Wiring Gp-Vehicle-Part 1 Of 6
| 8R***83 | Wiring Group-Machine | 1 |
8r4583 Wiring Gp-Vehicle-Part 4 Of 6
| 8R***83 | Wiring Group-Machine | 1 |
8r4583 Wiring Gp-Vehicle-Part 6 Of 6
| 8R***83 | Wiring Group-Machine | 1 |
4p0502 Wiring Gp-Unit Injector
| 4P***02 | Wiring Group-Unit Injector | 1 |
Engine Arrangement
7e3713 Engine Ar-Part 3 Of 3
| 3E***30 | Kit-Cylinder Block; (Rear Structure) | 0 |
| 3E***29 | Kit-Gasket; (Oil Cooler And Lines) | 0 |
| 3E***31 | Water Pump | 0 |
7e3713 Engine Ar-Part 1 Of 3
| 4P***08 | Control & Mounting Group | 1 |
| 4P***98 | Coolant Conditioner Group | 1 |
| 4P***55 | Cooler Group-Engine Oil | 1 |
7e3713 Engine Ar-Part 2 Of 3
| 10***38 | Housing Group-Front | 1 |
| 4P***09 | Pump Group-Fuel Injection | 6 |
| 4P***10 | Pump Group-Fuel Injection | 6 |
Frame And Body
3w5061 Axle Gp-Front
| 3W***61 | Axle Group-Front | 1 |
9t7802 Cylinder Gp-Belt Tensioner (Change 00-03)
| 9T***02 | Cylinder Group-Belt Tensioner | 1 |
8r4978 Guard Gp-Track Roller
| 8R***78 | Guard Group-Track Roller | 1 |
3w5046 Mounting Gp-Cab
| 3W***46 | Mounting Group-Cab | 1 |
3w5063 Support Gp-Suspension
| 3W***63 | Support Group-Suspension | 1 |
3w5062 Suspension Gp
| 3W***62 | Suspension Group | 1 |
3w5059 Tensioner Gp
| 3W***59 | Tensioner Group-Belt | 1 |
9t7924 Valve Gp-Relief--Direct Operated
| 9T***24 | Valve Group-Relief | 1 |
1r0880 Wheel & Idler Gp
| 1R***80 | Wheel & Idler Group | 1 |
1r0949 Belt & Drive Gp
| 1R***49 | Belt & Drive Group | 1 |
Belt Ars-Vehicle Drive
| 1R***38 | Belt 626 mm (25") Wide | 2 |
| 1R***58 | Belt Ar | 0 |
| 1R***66 | Belt 626 mm (25") Wide | 2 |
8r4580 Frame Gp-Part 1 Of 2
| 8R***80 | Frame Group | 1 |
8r4580 Frame Gp-Part 2 Of 2
| 8R***80 | Frame Group | 1 |
8r4581 Hood & Guard Gp
| 8R***81 | Hood & Guard Group | 1 |
4e4160 Step Gp
| 4E***60 | Step Group | 1 |
Fuel System
3w5018 Tank Gp-Fuel
| 3W***18 | Tank Group-Fuel | 1 |
4e1671 Tank Gp-Fuel
| 4E***71 | Tank Group-Fuel | 1 |
8r7936 Tank Gp-Fuel
| 8R***36 | Tank Group-Fuel | 1 |
9u3414 Cap Gp-Fuel
| 1U***46 | Sealant (For Locations A) | 1 |
| 2H***88 | Seal-O-Ring; (50.17mm Id) | 2 |
| 3N***56 | Screw-Tapping | 12 |
7c1760 Filter Gp-Fuel
| 7C***60 | Filter Group-Fuel | 1 |
7c6399 Filter Gp-Primary Fuel
| 7C***99 | Filter Group-Primary Fuel | 1 |
4p5018 Filter Gp-Primary Fuel
| 4P***18 | Filter Group-Primary Fuel | 1 |
8r4588 Installation Gp-Controls
| 8R***88 | Installation Group-Controls | 1 |
4e7715 Lines Gp-Fuel
| 4E***15 | Lines Group-Fuel | 1 |
8r4582 Lines Gp-Fuel
| 2V***87 | Bracket | 2 |
| 3P***47 | Clamp | 2 |
| 3W***82 | Hose | 2 |
9y8289 Lines Gp-Fuel Injection
| 9Y***89 | Lines Group-Fuel Injection | 1 |
4p0509 Pump Gp-Fuel Injection
| 4P***09 | Pump Group-Fuel Injection | 1 |
4p0510 Pump Gp-Fuel Injection-Unit
| 4P***10 | Pump Group-Fuel Injection | 1 |
7c2919 Pump Gp-Fuel Priming
| 7C***19 | Pump Group-Fuel Priming | 1 |
9y4183 Pump Gp-Fuel Transfer
| 9Y***83 | Pump Group-Fuel Transfer | 1 |
4p3777 Pump Gp-Fuel Transfer (One Section Gear)
| 4P***77 | Pump Group-Fuel Transfer | 1 |
1070592 Service Gp
| 00***98 | Connector-Hose (3/4-14nptf Thd) | 2 |
| 00***90 | Elbow | 1 |
| 00***86 | Connector-Hose (1/4-18nptf Thd) | 1 |
Hydraulic System
9t5238 Adjustment Gp-Hydraulic Valve
| 9T***38 | Adjustment Group-Hydraulic Valve | 1 |
8r9959 Cover Gp
| 8R***59 | Cover Group | 1 |
3w5077 Mounting Gp-Hydraulic Tank
| 3W***77 | Mounting Group-Hydraulic Tank | 1 |
8r7904 Pump & Mounting Gp
| 8R***04 | Pump & Mounting Group | 1 |
6e0356 Pump Gp-Piston
| 6E***56 | Pump Group-Piston | 1 |
9t3819 Rotating Gp-Pump
| 9T***19 | Rotating Group-Pump | 1 |
4e4059 Valve & Mounting Gp-4 Implement
| 4E***59 | Valve & Mounting Group | 1 |
4e2918 Valve & Mounting Gp
| 4E***18 | Valve & Mounting Group | 1 |
6e0389 Valve Gp
| 6E***89 | Valve Group | 1 |
6e0387 Valve Gp-Bank-4 Control Valve
| 6E***87 | Valve Group | 1 |
9t1799 Valve Gp-Control
| 9T***99 | Valve Group-Control; Valve Gp-Control | 1 |
6e0385 Valve Gp-Control
| 6E***85 | Valve Group-Control | 1 |
9t1812 Valve Gp-Compensator
| 9T***12 | Valve Group-Press & Flow Cmpnstr | 1 |
9t1819 Valve Gp-Relief
| 9T***19 | Valve Group-Relief | 1 |
8r7906 Lines Gp-Hydraulic Oil
| 8R***06 | Lines Group-Hydraulic | 1 |
6e1877 Tank Gp-Hydraulic-Part 2 Of 2
| 6E***77 | Tank Group-Hydraulic | 1 |
6e1877 Tank Gp-Hydraulic-Part 1 Of 2
| 6E***77 | Tank Group-Hydraulic | 1 |
4e7483 Trim Gp-Hydraulic Tank
| 4E***83 | Trim Group | 1 |
4t1860 Valve Gp-Shuttle
| 4T***60 | Valve Group-Shuttle; -Ripper Lift-Ripper Tilt-Blade Tilt-Blade Lift | 1 |
Lubrication System
3w5083 Filter & Mounting Gp
| 3W***83 | Filter & Mounting Group | 1 |
1112720 Base Gp-Oil Filter
| 11***20 | Base Group-Oil Filter | 1 |
9y8257 Filler Gp-Oil
| 9Y***57 | Filler Group-Engine Oil; -Left Front | 1 |
4p8509 Filler Gp-Oil
| 4P***09 | Filler Group-Oil | 1 |
9y3899 Filter Gp-Oil
| 9Y***99 | Filter Group-Engine Oil | 1 |
9y4839 Fumes Disposal Gp
| 9Y***39 | Fumes Disposal Group | 1 |
9y1843 Gauge Gp-Oil Level (Dipstick)
| 9Y***43 | Gauge Group-Oil Level (Dipstick); -Left Side | 1 |
4p8507 Gauge Gp-Oil Level (Dipstick)
4p8298 Lines Gp-Engine Oil
| 4P***98 | Lines Group-Engine Oil | 1 |
9y3982 Lines Gp-Engine Oil
| 9Y***82 | Lines Group-Engine Oil | 1 |
6i2541 Lines Gp-Turbocharger Oil
| 6I***41 | Lines Group-Turbocharger Oil | 1 |
7e8571 Lines Gp-Turbocharger Oil
| 7E***71 | Lines Group-Turbocharger Oil | 1 |
6i2515 Lines Gp-Turbocharger Oil
| 6I***15 | Lines Group-Turbocharger Oil | 1 |
9y8073 Pump Gp-Engine Oil (One Section Gear)*R
| 9Y***73 | Pump Group-Engine Oil | 1 |
9y3791 Pump Gp-Engine Oil (One Section Gear)
| 9Y***91 | Pump Group-Engine Oil | 1 |
Operator Station
9x1096 Air Conditioner & Mounting Gp
| 9X***96 | Air Conditioner & Mounting Group; Air Conditioner & Mounting Gp | 1 |
9x0324 Air Conditioner Gp-Part 2 Of 2
| 9X***24 | Air Conditioner Group | 1 |
9x0324 Air Conditioner Gp-Part 1 Of 2
| 9X***24 | Air Conditioner Group | 1 |
8r1626 Arm Gp-Swing
| 8R***26 | Arm Group-Swing | 1 |
3w5037 Cab Gp-Part 5 Of 5
| 3W***37 | Cab Group; Cab Gp | 1 |
3w5037 Cab Gp-Part 1 Of 5
| 3W***37 | Cab Group; Cab Gp | 1 |
3w5037 Cab Gp-Part 3 Of 5
| 3W***37 | Cab Group; Cab Gp | 1 |
3w5037 Cab Gp-Part 4 Of 5
| 3W***37 | Cab Group; Cab Gp | 1 |
3w5037 Cab Gp-Part 2 Of 5
| 3W***37 | Cab Group; Cab Gp | 1 |
8r7938 Cab Gp
| 3W***68 | Control Group-Transmission; Control Gp-Transmission | 1 |
| 3W***37 | Cab Group; Cab Gp | 1 |
| 3W***41 | Panel Group-Instrument; Panel Gp-Instrument | 1 |
3w5051 Control Gp-Brake
| 3W***51 | Control Group-Brake | 1 |
4e2662 Control Gp-Brake & Clutch-Part 2 Of 2
| 4E***62 | Control Group-Clutch & Brake | 1 |
3w5058 Control Gp-Brake & Clutch-Part 1 Of 2
| 3W***58 | Control Group-Clutch & Brake; Control Gp-Brake & Clutch | 1 |
4e2662 Control Gp-Brake & Clutch-Part 1 Of 2
| 4E***62 | Control Group-Clutch & Brake | 1 |
3w5058 Control Gp-Brake & Clutch-Part 2 Of 2
| 3W***58 | Control Group-Clutch & Brake; Control Gp-Brake & Clutch | 1 |
3w5047 Control Gp-Hydraulic
| 3W***47 | Control Group-Hydraulic; Control Gp-Hydraulic | 1 |
3w5052 Control Gp-Steering
| 3W***52 | Control Group-Steering; Control Gp-Steering | 1 |
3w4568 Control Gp-Transmission
| 3W***68 | Control Group-Transmission; Control Gp-Transmission | 1 |
3w5056 Control & Duct Gp
| 3W***56 | Duct & Control Group; Control & Duct Gp | 1 |
7x6023 Filter Gp-Cab Air
| 7X***23 | Filter Group-Cab Air | 1 |
3w5028 Horn Gp-Electric
| 3W***28 | Horn Group-Electric | 1 |
3w5041 Panel Gp-Instrument
| 3W***41 | Panel Group-Instrument; Panel Gp-Instrument | 1 |
3w5044 Panel Gp-Instrument
| 3W***44 | Panel Group-Instrument; Panel Gp-Instrument | 1 |
9x3509 Radio Gp-Am/Fm/Cassette (12 Volt Dc)
| 9X***09 | Radio Group | 1 |
3w6744 Seat Gp-Grammer-Part 2 Of 3
| 3W***44 | Seat Group; Seat Gp-Adjustable | 1 |
9u4541 Seat Gp
| 9U***41 | Seat Group | 1 |
3w6744 Seat Gp-Grammer-Part 1 Of 3
| 3W***44 | Seat Group; Seat Gp-Adjustable | 1 |
3w6744 Seat Gp-Grammer-Part 3 Of 3
| 3W***44 | Seat Group; Seat Gp-Adjustable | 1 |
3w5053 Seat Gp-Adjustable
| 10***97 | Bracket | 1 |
| 3W***53 | Seat Group-Adjustable | 1 |
| 3W***44 | Seat Group; Seat Gp-Adjustable | 1 |
4e3342 Suspension Gp
| 4E***42 | Suspension Group | 1 |
3w5107 Wiper Gp
| 3W***07 | Wiper Group | 1 |
3w6027 Wiper Gp
| 3W***27 | Wiper Group | 1 |
3w6598 Wiper Gp
| 3W***98 | Wiper Group | 1 |
3w5042 Wiper Gp
| 3W***42 | Wiper Group; -Front | 1 |
1043281 Absorber Gp-Shock
| 10***81 | Absorber Group-Shock | 1 |
1043269 Air Compressor Gp
| 10***69 | Air Compressor Group | 1 |
1043267 Bar Gp
| 10***67 | Bar Group | 1 |
1043279 Bearing Gp-Lower
| 10***79 | Bearing Group-Lower | 1 |
1043280 Bellows Gp
| 10***80 | Bellows Group | 1 |
1043274 Cam As-Sliding
| 10***74 | Cam As-Sliding | 1 |
7t7825 Clutch & Refrigerant Compressor Gp
| 7T***25 | Compressor Group-Clutch & Refrig | 1 |
7e7915 Compressor Gp-Refrigerant
| 7E***15 | Compressor Group-Refrigerant | 1 |
7e7672 Condenser Gp
| 7E***72 | Condenser Group | 1 |
4e0445 Control Gp-Governor-Part 1 Of 2
| 4E***45 | Control Group-Governor | 1 |
4e0445 Control Gp-Governor-Part 2 Of 2
| 4E***45 | Control Group-Governor | 1 |
4e0728 Cover Gp-Dash
| 1V***22 | Nut-Speed-Front Headliner Support | 6 |
| 3W***19 | Cover As | 1 |
| 3W***08 | Film-High Beam/Turn Indicator | 1 |
9u1695 Drawbar Gp-Swinging
| 9U***95 | Drawbar Group-Swinging | 1 |
1043266 Lever Gp-Control
| 10***66 | Lever Group-Control | 1 |
1043271 Lines Gp-Air Compressor
| 10***71 | Lines Group-Air Compressor | 1 |
8r4586 Lines Gp-Air Conditioner-Part 1 Of 2
| 8R***86 | Lines Group-Air Conditioner | 1 |
8r4586 Lines Gp-Air Conditioner-Part 2 Of 2
| 8R***86 | Lines Group-Air Conditioner | 1 |
1043277 Linkage Gp-Suspension
| 10***77 | Linkage Group-Suspension | 1 |
1043263 Plate Gp-Upper
| 10***63 | Plate Group-Upper | 1 |
4e9422 Seat Belt As
| 4E***22 | Seat Belt As | 1 |
1043262 Seat Gp-Suspension-Part 3 Of 3
| 10***62 | Seat Group-Suspension | 1 |
1043262 Seat Gp-Suspension-Part 2 Of 3
| 10***62 | Seat Group-Suspension | 1 |
1043262 Seat Gp-Suspension-Part 1 Of 3
| 10***62 | Seat Group-Suspension | 1 |
1043273 Spring Gp-Air
| 10***73 | Spring Group-Air | 1 |
1043264 Stop Gp
| 10***64 | Stop Group | 1 |
4e1293 Support Gp
| 4E***93 | Support Group | 1 |
1043261 Suspension Gp-Seat-Air
| 10***61 | Suspension Group-Seat | 1 |
1043278 Wiring Gp
| 10***78 | Wiring Group | 1 |
Service Equipment And Supplies
Name Plates & Films
| 1P***07 | Film-Symbol; 2 On Bottom Of Upper Frame Below Engine. 2 On Front Of Upper Frame Above Boom Articulation | 4 |
| 3E***16 | Film-Warning-On Top Master Shield | 1 |
| 3E***27 | Plate-Rops/Fops-On Left Rear Of Cab Just | 1 |
Transmission
9w0342 Actuator Gp-Rotary
| 9W***42 | Actuator Group-Rotary | 1 |
9w5623 Cover Gp-Shipping
| 9W***23 | Cover Group-Shipping; Cover Gp-Shipping | 1 |
6t4740 Covers Gp-Shipping
| 6T***40 | Cover Group-Shipping; Covers Gp-Shipping | 1 |
7t3443 Drive Gp-Pump
| 7T***43 | Drive Group-Pump; Drive Gp-Transmission Pump | 1 |
9w1374 Drive Gp-Pump
| 9W***74 | Drive Group-Pump; Drive Gp-Steering Pump | 1 |
3w5072 Filler Gp-Power Train Oil
| 3W***72 | Filler Group-Power Train Oil | 1 |
3w5074 Lines Gp-Filter
| 3W***74 | Lines Group-Transmission Filter | 1 |
7t7990 Pump Gp-Gear
| 7T***90 | Pump Group-Gear; Pump Gp-Gear | 1 |
7t7953 Pump Gp-Gear
| 7T***53 | Pump Group-Gear | 1 |
3w5066 Drive Shaft Gp
| 3W***66 | Shaft Group-Drive | 1 |
3w5032 Support Gp-Transmission
| 3W***32 | Support Group-Transmission | 1 |
8y1293 Universal Joint Gp
| 8Y***93 | Universal Joint Group | 1 |
6t4733 Valve Gp
| 6T***33 | Valve Group | 1 |
6y0185 Valve Gp-Modulating
| 6Y***85 | Valve Group-Modulating | 1 |
9w1580 Valve Gp-Pressure Control-Part 2 Of 2
| 9W***80 | Valve Group-Pressure Control | 1 |
9w1580 Valve Gp-Pressure Control-Part 1 Of 2
| 9W***80 | Valve Group-Pressure Control | 1 |
6t4735 Valve & Selector Gp
| 6T***35 | Valve Group-Selector & Press Cont | 1 |
8e5142 Case & Parts Gp-Part 2 Of 3
| 8E***42 | Case & Parts Group-Planetary | 1 |
8e5142 Case & Parts Gp-Part 1 Of 3
| 8E***42 | Case & Parts Group-Planetary | 1 |
8e5143 Case & Parts Gp-Part 2 Of 3
| 8E***43 | Case & Parts Group-Planetary | 1 |
8e5142 Case & Parts Gp-Part 3 Of 3
| 8E***42 | Case & Parts Group-Planetary | 1 |
8e5143 Case & Parts Gp-Part 1 Of 3
| 8E***43 | Case & Parts Group-Planetary | 1 |
8e5143 Case & Parts Gp-Part 3 Of 3
| 8E***43 | Case & Parts Group-Planetary | 1 |
9n4504 Clutch Gp-Fifth & Reverse-Part 1 Of 2
| 9N***04 | Clutch Group | 1 |
7t6126 Clutch Gp-High & Low-Part 1 Of 2
| 7T***26 | Clutch Group | 1 |
7t6126 Clutch Gp-High & Low-Part 2 Of 2
| 7T***26 | Clutch Group | 1 |
9n4504 Clutch Gp-Fifth & Reverse-Part 2 Of 2
| 9N***04 | Clutch Group | 1 |
8e7038 Control Gp-Transmission Hydraulic
| 8E***38 | Control Group-Transmission Hydraulic | 1 |
8r4597 Lines Gp-Power Train Cooler
| 8R***97 | Lines Group-Power Train Cooler | 1 |
6y1242 Planetary Gp-Part 3 Of 3
| 6Y***42 | Planetary Group | 1 |
6y1242 Planetary Gp-Part 1 Of 3
| 6Y***42 | Planetary Group | 1 |
6y1242 Planetary Gp-Part 2 Of 3
| 6Y***42 | Planetary Group | 1 |
8r4592 Shaft Gp-Input
| 8R***92 | Shaft Group-Input | 1 |
8e5141 Shaft Gp-Input
| 8E***41 | Shaft Group-Input | 1 |
7t6362 Transmission Ar
| 6Y***42 | Planetary Group | 1 |
| 7T***00 | Drive Group-Power Take-Off | 1 |
| 7T***43 | Drive Group-Pump; Drive Gp-Transmission Pump | 1 |
7t6123 Transmission Ar
| 3E***34 | Parts & Case | 0 |
| 3E***35 | Hydraulic Control | 0 |
| 6T***40 | Cover Group-Shipping; Covers Gp-Shipping | 1 |
8e7037 Valve Gp-Relief
| 8E***37 | Valve Group-Relief | 1 |
75 serial number reference
The PIN/serial plate is a metal tag riveted to the tractor's main frame; consistent with Cat's general practice on equipment of this era, the number is also stamped directly into the frame steel near the plate so it survives if the tag is lost or painted over. Read the first three characters as the model/plant prefix and the digits that follow as the sequential unit number within that prefix - a prefix change marks a generation break (base 75 to 75C to 75D to 75E), not a mid-run running change. If the plate is missing or illegible, a dealer can pull the build record from the full prefix plus serial.
| Prefix | Identifies | Notes |
|---|---|---|
| 4CJ | Challenger 75 (base, pre-letter generation) | Earliest 75-family generation, built roughly 1991-1992. Cat 3176-family 6-cylinder diesel (10.3 L), gross engine rating around 325 hp with PTO output tested near 300 hp. 10-speed full powershift transmission, hydrostatic differential steering, rubber Mobil-trac undercarriage. Predates the 75C; not to be confused with the 65C/70C/75C/85C parts-book family which uses different prefixes. |
| 4KK | Challenger 75C | Built roughly 1993-1996. Cat 3176 6-cylinder diesel (10.3 L), gross rating around 325 hp with PTO output tested near 300 hp. 10-speed full powershift transmission. Shares its parts/electrical documentation set with the 85C sibling, which carries its own separate prefix - do not blend the two. |
| 5AR | Challenger 75D | Short-run bridge generation between 75C and 75E, built roughly 1996-1997. Cat 3176C ATAAC 6-cylinder diesel (10.3 L), gross rating around 330 hp. 10-speed full powershift transmission. |
| 6HS | Challenger 75E | Built roughly 1998-2001. Cat 3176-family 6-cylinder diesel (10.3 L), gross rating around 340 hp. 10-speed full powershift transmission, hydrostatic differential steering, standard air-conditioned cab. Assembly tied to DeKalb, Illinois for this generation. Prefix sits in a sequential block issued alongside siblings 65E, 85E and 95E, each on its own distinct prefix - do not blend their figures into the 75E. |
Frequently asked questions
What engine is in the Caterpillar Challenger 75?
A Caterpillar 3176-family 10.3 L (629 cu in) turbocharged inline six-cylinder diesel. Output varies by series: around 242 kW (325 hp) gross on the base 75 and 75C, about 246 kW (330 hp) on the 75D, and about 254 kW (340 hp) on the 75E.
What is the operating weight of the Caterpillar Challenger 75?
Roughly 15,100-16,200 kg (33,300-35,700 lb) depending on series and configuration. The 75C runs toward the lighter end and the 75D toward the heavier end of that range.
What replaced the Caterpillar Challenger 75?
Caterpillar sold its agricultural equipment business to AGCO in 2002 and exited farm tractor production. The Challenger name continued under AGCO as the MT-series rubber-track tractors, built on a different Sisu/AGCO Power engine lineage rather than a direct Cat-engineered successor to the 75.
What 75 owners discuss
How reliable is the Cat 3176 diesel across the 75/75C/75D/75E run, and what should I watch for as hours climb?
The 3176-family 10.3 L (629 cu in) inline-six was tuned up in steps across the series: roughly 325 hp on the 75C, 330 hp on the 75D, and 340 hp on the 75E, same basic block and displacement throughout. The engine has a strong reputation for going the distance - owners report 8,000+ hours with nothing more than an injector and injector-tube swap along the way, burning around 3.8 L (1 gal) of oil every 200 hours after that work. Design life is commonly discussed in the 15,000-20,000 hour range with proper upkeep. The one recurring weak point across the family is the aluminum spacer plate between block and head: oil weeping or bubbling at that joint is a known wear pattern, not something you torque away - plan on a proper head/spacer gasket repair rather than chasing a surface leak. As injectors age, hard hot-restarts are the early warning sign; injectors are replaced as a matched set, not one at a time, to keep spray pattern and output consistent across cylinders.
Is the powershift transmission on these track tractors trouble-prone?
No - it's generally regarded as one of the stronger parts of the machine. Shifts are smooth through the range except right at a clutch-pack change, which is normal for any powershift and not a defect. On higher-hour machines, pay particular attention to the 2-3, 5-6, and 8-9 shifts, since each of those crosses a range-shaft change; a shift that flares, bangs, or slips in that group points to worn clutch packs or range-shaft wear and is a bigger warning sign than it sounds. Regular oil sampling on the transmission and hydraulic compartments is the usual way owners catch wear before it turns into a teardown.
What's behind reports of intermittent hydraulic loss or odd steering response under load?
Two related complaints come up repeatedly. Intermittent full loss of hydraulic function - implements and steering assist going dead for no obvious reason even with the tank full - has been traced to worn resolver seals inside the main hydraulic control valve rather than the pump itself. Separately, some machines under a heavy towed load in a hard turn have shown a steering response that doesn't match the input, tracking straighter than the wheel or lever position calls for. Both point back to the same control-valve and steering-circuit area, and both affect your ability to steer and stop the tractor as expected. Because a mismatch between steering input and machine response is a safety issue, don't just top off fluid and move on - have your dealer pressure-test the steering circuit and inspect the control valve before the machine goes back to field work.
What's the story with the 'flip-flop' valve some owners mention causing hydraulic problems?
It's a diverter valve that shuffles pilot oil between the transmission and hydraulic circuits. When it leaks internally it can quietly overfill the transmission case while starving the hydraulic tank, which shows up as hydraulic behavior that comes and goes for no clear pattern. Some owners have pulled the valve and plugged the hoses as a permanent workaround, which stops the overfill/starve cycle but also removes steering assist in reverse. That's a real safety tradeoff, not just an inconvenience - have your dealer repair or properly replace the valve rather than leaving it plugged, especially if the tractor works in reverse near people or in tight spaces.
What undercarriage and track wear should I expect, and where does most of the wear budget go?
Rubber-belt undercarriage wear is the single biggest running cost on these tractors over their life, ahead of engine or transmission work - the wear is visible as it develops, so most owners budget for it rather than get surprised by it. Track tension is held by a mechanical spring, or a spring-plus-nitrogen combination depending on configuration, and needs regular checking since a loose belt walks and self-destructs early. Mid-rollers (polyurethane on later production) fail through heat buildup and chunking rather than simple tread wear - a roller running hot or shedding chunks of urethane is done, not something to true up. Drive sprockets wear from a round tooth profile toward a hooked or pointed one; once that happens the belt starts to skip on the sprocket under load, which accelerates wear on the belt's drive lugs too. Sprockets and belts wear as a matched set - putting a new belt on a worn sprocket, or the reverse, just transfers the wear onto the new part faster.
Why does the electrical system seem hard to diagnose compared to newer equipment?
These tractors predate the deep diagnostic coverage of later telematics-era machines - the onboard control system logs some faults but was never built to pinpoint a problem the way a modern engine control system does. Expect to troubleshoot with the electrical schematic and a multimeter, circuit by circuit, rather than plugging in a reader and getting a specific answer. Day to day the electrical side is otherwise unremarkable; the more common minor item owners mention is the brake hydraulic reservoir needing fluid topped up a few times a season. Track that closely - fluid that keeps dropping usually means a seal is weeping somewhere in the brake circuit rather than normal consumption, and since it's a brake system, have your dealer check the circuit for internal or external leakage if you're adding fluid more than occasionally.
What should I check when buying a used Challenger 75, in any series?
Start at the tracks: check belt tension, look for heat-glazing or chunking on the mid-rollers, and check sprocket tooth profile for hooking - this is where the real money hides on a used machine of this type. Run the transmission through every range and pay particular attention to the 2-3, 5-6, and 8-9 shifts; any flare, bang, or slip there is a bigger red flag than it looks. With the engine running, check the spacer-plate area between block and head for oil weeping, and watch oil-level trend and smoke at idle and full throttle rather than trusting one clean dipstick check. Cycle the hydraulics and steering under some load if you can - intermittent hydraulic dropout and reverse-steering feel are both known trouble spots - and ask directly whether the flip-flop valve has ever been plugged or bypassed. Ask for oil-sample history on the engine, transmission, and hydraulic compartments; a seller who has that paperwork is usually the better buy regardless of hour count, since hours alone don't tell you how the machine was cared for. Have a dealer or independent tech run a pre-purchase check on the hydraulic and brake circuits before putting the tractor to work.
Compiled from owner and technician discussions across the industry — experiences vary by serial range and machine history.
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