Caterpillartrack-type tractor
Caterpillar D4C
Maintenance schedule, common problems & OEM parts breakdown
The Caterpillar D4C is a small-class track-type tractor built from 1987 to 2001, sized between the D3C and D5C on Caterpillar's compact crawler-dozer platform. Early Series I and Series II builds run the Cat 3204 four-cylinder diesel rated around 60 kW (80 hp) gross, paired with a mechanical steering-clutch-and-brake power train and a 3-speed powershift transmission. Series III builds switch to the Cat 3046 six-cylinder diesel, rated near 66 kW (88 hp) gross and 60 kW (80-81 hp) net, and add an optional Hystat dual-path hydrostatic transmission alongside the standard powershift. Operating weight runs roughly 7,266-7,905 kg (16,019-17,428 lb) depending on series and undercarriage configuration: Standard, XL wide-gauge, or LGP low-ground-pressure, with Series III also offering a reinforced VPAT angling blade. The D4C line follows the D4D-era small dozers and was replaced by the D4G small-dozer generation after 2001, later the D4H. Caterpillar has reused the "D4" nameplate across unrelated eras, so this generation refers specifically to the 1987-2001 D3C/D4C/D5C-platform machine.
The biggest change across the D4C's run is the Series III engine and driveline swap: the four-cylinder 3204 and mechanical clutch-and-brake steering of the early tractors give way to the six-cylinder 3046, with an optional hydrostatic Hystat drive that trades steering clutches for smoother dual-path steering and finer grade control. The added VPAT blade option on Series III also widened grading and finish-work capability versus the fixed-configuration blades common on earlier builds. In today's used and parts market the D4C remains a common, affordable small dozer for landscaping, right-of-way clearing, and utility work. Its mechanical fuel system and largely analog controls keep it serviceable without dealer diagnostic tools, and steering clutch, final drive, and undercarriage wear parts are the most frequently sourced components across both engine families.
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 D4C specifications
Engine
| Engine (early/Series II production) | Cat 3204, naturally aspirated inline-4 diesel, 5.2 L (317 cu in) displacement, 60 kW (80 hp) gross |
| Engine (later/Series III production, incl. XL, LGP, Hystat) | Cat 3046, naturally aspirated inline-6 diesel, 5.0 L (305 cu in) displacement, 65.6-65.7 kW (88 hp) gross at 2400 rpm; 59.7-60.5 kW (80-81 hp) net |
| Emissions tier | Pre-emissions-regulated mechanical diesel, no EPA/EU tier rating published for this production era |
| Note on engine change | The D4C nameplate carried a mid-production engine change: base and Series II builds use the 4-cylinder 3204, Series III builds (standard, XL, LGP and Hystat) use the 6-cylinder 3046 at similar net power. Treat any single engine callout with caution and check the specific series/serial range |
Weights (operating, by configuration)
| Standard, Series II | 7,581 kg (16,713 lb) |
| Standard, Series III | 7,266 kg (16,019 lb) |
| XL, Series III | 7,458 kg (16,442 lb) |
| Series III Hystat (standard) | 7,326 kg (16,150 lb) |
| XL Series III Hystat | 7,517 kg (16,574 lb) |
| LGP, Series II | 7,905 kg (17,428 lb) |
| LGP, Series III | 7,726 kg (17,032 lb) |
| Note | Operating weight varies by series, blade type and undercarriage width; figures above are ROPS/cab machine with standard blade and full fluids, no attachments |
Dimensions
| Overall length with blade | 3.85-4.05 m (12.64-13.29 ft), varies by blade/config |
| Length without blade | 2.96-3.02 m (9.7-9.9 ft) |
| Width over tracks, Standard | 1.83-1.91 m (6.01-6.25 ft) |
| Width over tracks, XL | 1.96 m (6.42 ft) |
| Width over tracks, LGP | 2.29-2.31 m (7.52-7.59 ft) |
| Height to top of cab | 2.66-2.73 m (8.73-8.96 ft) |
| Ground clearance | 0.29-0.37 m (0.96-1.23 ft), lower on Series II, higher on Series III |
| Track gauge, Standard/XL | 1.42-1.50 m (4.66-4.92 ft) |
| Track gauge, LGP | 1.65-1.68 m (5.42-5.50 ft) |
| Track shoe width, Standard | 406 mm (15.99-16 in) |
| Track shoe width, XL | 457 mm (18 in) |
| Track shoe width, LGP | 635 mm (25 in) |
| Length of track on ground | 2.05-2.06 m (6.73-6.75 ft) |
Performance
| Travel speed, powershift models (Standard/XL/LGP) - forward max | 11.1-11.2 km/h (6.9 mph), 3 forward gears |
| Travel speed, powershift models - reverse max | 11.9-12.0 km/h (7.4 mph), 3 reverse gears |
| Travel speed, Hystat (hydrostatic) models | Stepless drive; top speed reported around 9 km/h (5.6 mph) forward and reverse on published spec sheets, with some listings citing up to 10 km/h - varies by configuration/source |
| Ground pressure, Standard | 42.7-43.4 kPa (6.19-6.3 psi) |
| Ground pressure, XL | 36.2-36.5 kPa (5.25-5.29 psi) |
| Ground pressure, LGP | 29.0-30.1 kPa (4.21-4.36 psi) |
| Hydraulic pump flow | 54-64 L/min (14.3-17.6 gpm) depending on series |
| Hydraulic relief valve pressure | 17,237 kPa (2,500 psi) |
| Drawbar pull | Not published on standard retail spec sheets for this size of dozer - not documented for this model; verify with your dealer or the applicable pull-performance chart |
| Gradeability | Not documented in available spec sheets for this model |
Blades
| S-type blade (Standard/XL/Hystat), width | 2.56-2.74 m (8.4-9 ft), varies by series |
| S-type blade capacity | 1.6-1.7 m3 (2.1-2.2 cu yd) |
| S-type blade cutting depth | 440-450 mm (17.3-17.7 in) |
| S-type blade max angle | 25 degrees each direction |
| LGP blade width | 3.26-3.35 m (10.7-11 ft) |
| LGP blade capacity | 1.68-1.76 m3 (2.2-2.3 cu yd) |
| LGP blade height | 843-933 mm (33.2-36.7 in) |
Service capacities
| Fuel tank, Series II | 114 L (30.2 gal) |
| Fuel tank, Series III/XL/LGP/Hystat | 157 L (41.5 gal) |
| Hydraulic system | 57 L (15.1 gal), consistent across configurations |
| Engine oil (with filter), 3046-engine builds | 13 L (3.5 gal) |
| Cooling system, 3046-engine builds | 21 L (5.6 gal) |
| Note | Engine oil and cooling system capacities are documented for the later 3046-engine (Series III) builds; capacities for early 3204-engine builds are not consistently published and should be confirmed against the specific parts/service manual |
Values vary by configuration, region, and serial range — confirm against your machine before planning transport or lifts.
D4C fluids & capacities
| System | Capacity | Recommended fluid |
|---|---|---|
| Engine crankcase (with filter) | 12.0 L (12.7 US qt / about 3.2 US gal) on the base D4C and Series II, both built around the Cat 3204 four-cylinder engine. The later Series III (Cat 3046 six-cylinder — a different engine generation, not the base D4C) runs about 12.9-13.2 L (13.6-14 US qt / 3.5 US gal). | Cat DEO (Diesel Engine Oil) meeting Caterpillar's diesel engine oil spec. SAE 15W-40 for general and warm-ambient service; SAE 10W-30 where cold starts are common. Older charts also list single-grade SAE 30 (warm) or SAE 10W (cold) as acceptable alternates. |
| Cooling system | 20.0 L (21.1 US qt / about 5.3 US gal) on the base D4C/Series II (3204 engine). The Series III (3046 engine, a later generation) is most commonly listed at about 21.2 L (5.6 US gal); one spec sheet shows a much smaller figure for that same machine, which looks like a data error rather than a real build difference, so treat roughly 21 L as the reliable Series III number. | Cat DEAC (heavy-duty diesel engine antifreeze/coolant, conventional glycol type) mixed per the OMM's freeze-protection chart for expected ambient temperature. Cat ELC (extended-life coolant) is the approved alternative on machines converted to that fill. Do not mix DEAC and ELC in the same system. |
| Fuel tank | About 114-121 L (30.2-31.9 US gal, varies slightly by source/configuration) on the base D4C and Series II. The Series III (later 3046-engine generation) carries a larger tank at about 157 L (41.5 US gal). | No. 2-D diesel fuel meeting ASTM D975 for normal service. No. 1-D diesel recommended in cold weather for better cold-flow and easier starting. |
| Powershift transmission + bevel gear/steering clutch compartment | 28.0 L (29.6 US qt / about 7.4 US gal) on the base D4C. The Series III (later 3046-engine generation) is essentially the same, about 28.4 L (7.5 US gal). The OMM does not publish the bevel-gear/steering-clutch housing as a separate fill on this small-dozer platform — it shares one sump with the powershift transmission, so this single figure covers both. | Cat TDTO (Transmission/Drive Train Oil) meeting the Cat TO-4 performance spec. Single-grade only, chosen by ambient temperature — SAE 10W in cold climates, SAE 30 in moderate climates, SAE 50 in hot climates. Multigrade oils are not approved in this compartment. |
| Final drives (each side) | Not separately published for the base D4C in available spec sheets. The Series III (3046-engine, later generation) lists about 14.8 L (3.9 US gal) per side. Expect a broadly similar figure on the base machine since the final-drive housing is shared across the small-dozer family, but confirm against the dipstick/level plug or your serial-specific OMM. | Cat TDTO (TO-4 spec), same grade selection as the transmission/bevel-gear compartment by ambient temperature. Do not substitute an ordinary API GL-5 hypoid gear oil — its extreme-pressure additive package attacks the duo-cone face seals. |
| Hydraulic system/tank | 56.8-57.2 L (15-15.1 US gal). This figure is consistent across the base D4C, Series II, and Series III. | Cat TDTO (TO-4 spec) where the OMM specifies a shared power-train-and-hydraulic fill, as is typical on this class of small dozer; Cat HYDO (anti-wear hydraulic oil) is the alternative on machines where the hydraulic reservoir is filled independently of the power train. Check the filler-cap decal or your serial-specific OMM page to confirm which applies to your unit. |
| Pivot shaft / equalizer bar | No refill capacity — this is a grease-gun lube point, not a filled compartment. | Cat MPGM (Multipurpose Grease), NLGI 2 grade, applied at the scheduled interval in the OMM lubrication chart. Some printings call for a moly-fortified extreme-application grease at this joint given its swinging load. |
| Grease specifications (chassis points) | Applied via grease gun at each fitting (track idler, roller frame, blade lift/tilt linkage, steering-clutch and brake linkage, etc.); no reservoir capacity. | Cat MPGM (Multipurpose Grease), NLGI 2, for standard chassis fittings. Cat Extreme Application (moly-fortified) grease specified on high-load pin and bushing joints where called out on the machine's lubrication chart. |
Capacities are refill values from factory literature — always fill to the dipstick/sight gauge, not the number.
Caterpillar D4C maintenance schedule
| Service interval | Tasks |
|---|---|
| Every 10 h |
|
| Every 250 h |
|
| Every 500 h |
|
| Every 1,000 h |
|
| Every 2,000 h |
|
| Every 4,000 h |
|
Servicing the D4C beyond the schedule
Predictive Maintenance & Fluid Analysis
Pull an SOS oil sample from the power train filter base at every service interval. Hystat models route a combined power train/hydraulic filter through one accessible port, making trend sampling simple. Track the 3204 or 3046 engine oil for fuel dilution and coolant intrusion, both early warning signs on these mechanical-injection diesels. Sample each final drive housing separately since wear metal shows up there before it appears in the transmission. Watch coolant condition closely; these machines commonly still run conventional coolant that needs conditioner top-ups, not extended-life fluid.
Corrective & Common Repairs
Steering clutch and brake wear is the most common corrective job on powershift D4C tractors. Slipping or grabby steering usually traces to worn discs or a linkage needing adjustment, not the bevel gear set. Track adjusters lose grease and leak past the yoke seal, letting tension bleed off and accelerating chain wear. On 3204-powered Series I/II machines, check the injection pump and injectors first for hard starting or smoke. Hystat-equipped Series III units instead point to the charge pump or drive motor when steering response goes soft.
Overhaul & Rebuild Points
Budget a full undercarriage rebuild (chains, rollers, idlers, and sprockets) as the D4C's biggest wear-driven expense; LGP and XL shoes wear at different rates than Standard-gauge machines. Steering clutch and brake discs, along with the bevel gear and pinion set, are the next major power train rebuild point on powershift tractors. The 3204 and 3046 both tolerate a top-end overhaul (liners, pistons, valve train) before a full inframe rebuild is needed. On Hystat machines, plan pump and drive motor rebuilds separately from the mechanical power train since they wear independently.
Seasonal & Environment Servicing
Cold-climate D4C tractors need engine coolant checked for freeze protection each season and the start-aid system kept working, since the 3204 and 3046 have no factory block heater on most units. Clean radiator and oil cooler fins often in dusty or wood-debris environments; the compact engine bay traps chaff and mud quickly. Loosen track tension slightly for frozen or muddy ground to reduce pin and bushing load, then reset for normal dry-ground operation. Hystat models may need a heavier power train oil viscosity for extreme heat or cold.
D4C common service parts
| Part number | Part | Notes | |
|---|---|---|---|
| 6V-7614 | Film-Identification | Lubrication service | Check fitment → |
| 6V-2219 | Kit-Gasket | Scheduled service item | Check fitment → |
Always confirm against your machine's serial number — cross-check any part in Heavy Parts AI before ordering.
D4C fault codes & troubleshooting
| Code | Meaning | Likely cause | What to do |
|---|---|---|---|
| Action Lamp - Amber (steady) | Instrument panel action lamp lit steady amber. Monitoring system has flagged a machine system needing attention, no immediate operating restriction. | A marginal reading on a monitored circuit (coolant temperature, engine oil pressure, hydraulic/power train oil temperature, or charging system) trending outside normal range. | Scan the gauge cluster to find which reading is abnormal, note engine hours, and schedule service before the next shift. |
| Action Lamp - Red (flashing) | Action lamp flashes red, a warning-level alert calling for a change in how the machine is being operated to bring an overheating system back into range. | Coolant or hydraulic/power train oil temperature has climbed into the warning band, usually from overload, restricted airflow at the radiator or oil cooler, or low fluid level. | Reduce ground speed and load, let temperatures drop, then check radiator and oil cooler fins for debris and fluid levels once safely stopped. |
| Action Lamp - Red (flashing) with audible alarm | Flashing red action lamp plus the audible alarm calls for an immediate, controlled shutdown to prevent damage to the affected system. | A monitored temperature or pressure has reached the shutdown threshold, most often severe overheating or a sustained loss of lubrication or hydrostatic charge pressure. | Stop in a safe spot, idle briefly, then shut down; check coolant/oil level, filters, and drive belts before restarting. |
| Engine Coolant Temperature warning lamp | Dash lamp and gauge needle in the red band show engine coolant running hotter than the normal operating range. | Low coolant level, plugged radiator core or fins, slipping or failed fan drive, or a stuck thermostat. | Idle the engine, check coolant level once safe, clean radiator fins, and inspect the fan drive and thermostat if overheating repeats. |
| Engine Oil Pressure warning lamp | Dash lamp, often paired with a buzzer, lights when the oil pressure sender detects pressure below the safe minimum for current engine speed. | Low oil level, worn oil pump or bearings, a plugged oil filter, or a failing pressure sender/switch. | Shut the engine down right away, check oil level and filter condition, and verify pressure with a mechanical gauge before restarting. |
| Hystat charge pressure low (Hystat drivetrain) | On Hystat-equipped machines a drop in hydrostatic charge pressure shows up as loss of drive power or the machine failing to move; there is no numeric code, confirmation comes from checking pressure at the charge circuit test ports. | A failed charge pump, worn drive coupling between engine and hydrostatic pump, low hydraulic oil level, or a plugged hydraulic filter. | Connect a pressure gauge to the charge circuit test ports and compare against factory spec, roughly 2400 kPa (350 psi); check oil level, filters, and the pump drive coupling if pressure is low or absent. |
| Charging System (Alternator) warning lamp | Dash lamp lights when the alternator is not producing adequate charging voltage. | A worn or slipping alternator belt, a faulty alternator, or loose/corroded battery and charging wiring. | Check belt tension and condition, inspect wiring and connections, and test alternator output and battery condition. |
Codes and remedies are general guidance for this model family — always confirm with diagnostic tooling and your dealer before major repairs.
D4C attachments & work tools
Blades
Base D4C dozer blade (Series II and III) runs about 2.6-2.75 m (8.4-9 ft) wide, 0.93-1.0 m (36.6-36.7 in) tall, 1.6-1.7 m3 (2.1-2.2 yd3) capacity, angling 25 degrees either direction with roughly 440-450 mm (17.3-17.7 in) cutting depth. The XL configuration keeps the same straight blade width on a wider undercarriage/gauge; the LGP configuration steps up to a wider, lower-profile blade of about 3.35 m (11 ft) wide by 0.84 m (33 in) tall at roughly 1.76 m3 (2.3 yd3) capacity to suit its low-ground-pressure shoes. A factory VPAT (variable-pitch-angle-tilt) blade was offered across the Series III line (base, XL, LGP, Hystat), adding forward/back pitch and side tilt on top of the same 25-degree angle range; dedicated semi-U or U-profile blades are not documented for this class, so straight and VPAT cover the factory range, with aftermarket 6-way angle/tilt blades showing up on forestry-converted units.
Rippers
Ripper options for this small-dozer class (shared across D3C/D4C/D5C) split into a single-shank ripper for maximum penetration in hard, frozen, or rocky ground, and multi-shank hinge-style or parallelogram-style rippers for higher-production ripping of softer or thinner material. The hinge-style multi-shank unit is the lighter of the two, around 300-330 kg (660-730 lb) bare weight, and lifts on one cylinder; the parallelogram-style multi-shank unit adds a second lift cylinder to hold a more consistent shank angle through the stroke. Shank spacing is set to job conditions rather than run at one fixed count, and single-shank units for this size class are noticeably lighter than multi-shank frames.
Winches
A Cat retrieval winch is catalogued as an available option for the D4C Series III for self-retrieval and recovery duty rather than continuous towing. The factory-linked unit for this small-dozer platform is rated near 18,000 kg (40,000 lb) max line pull and about 40 m/min (131 ft/min) line speed at full drum, weighing close to 610 kg (1,345 lb); treat this rating as approximate for the D4C specifically since the same winch carries forward onto later small-dozer generations sharing the platform, so confirm the period-correct rating with your dealer. Aftermarket PTO or hydraulic towing winches were also fitted to Cat crawler tractors this size for logging/skidding work, separate from the factory recovery winch.
Drawbars/Counterweights
A rear drawbar (fixed towing clevis) is available in place of the ripper mount for pulling trailed scrapers, disks, or other towed implements, standard practice across this small-dozer class. Rear counterweight ballast is used on drawbar/towing setups and heavier front-end configurations to hold rear traction and stability. Exact drawbar-pull ratings and counterweight mass are not documented for the D4C specifically, period spec sheets cover blade/ripper/winch options in detail but not drawbar hardware, so verify capacity with a dealer for a given configuration.
Cab/ROPS guarding
Base configuration is an open ROPS canopy (OROPS); Cat also offered a sealed, enclosed cab as an alternative on this small-dozer platform for dust exclusion and operator comfort, mirroring the option structure on the sibling D3C/D5C models of the same series. Formal factory-branded Forestry and Waste Handler guarding packages (radiator/belly/final-drive guards, rear strike bars, sealed pressurized cab) are documented on later small-dozer generations but not clearly under the D4C nameplate. Period D4C forestry and waste conversions instead relied on dealer- or aftermarket-fitted sweeps, screens, and limb risers bolted over the existing canopy or cab glass and radiator opening.
Hydraulic arrangement (front/rear tools)
One engine-driven gear pump supplies both the front blade circuit and the rear ripper-lift circuit through separate valve sections in a shared main control valve, per the common D3C/D4C/D5C Series III hydraulic system documentation. Series II runs about 2500 psi relief at roughly 55 L/min (14.6 gpm) into a 57 L (15.1 gal) reservoir; Series III raises flow to about 67 L/min (17.6 gpm) at the same 2500 psi relief to serve the added VPAT angle/tilt cylinders. On Hystat models the power-train and implement hydraulic circuits run separately but share combined, vertically mounted filtration serviced from the rear panel; a fitted retrieval winch typically runs as a self-contained hydraulic unit off the implement circuit rather than a mechanical PTO, so confirm drive type on the specific unit installed.
All D4C assemblies by section
Every catalogued assembly group for the Caterpillar D4C. Open an assembly to preview the parts inside — full OEM part numbers are available in Heavy Parts AI.
Air Inlet And Exhaust System
7w8764 Air Cleaner Gp
| 7W***64 | Air Cleaner Group | 1 |
7w8765 Air Cleaner Gp
| 7W***65 | Air Cleaner Group | 1 |
4n0312 Exhaust Extension Gp
| 4N***12 | Extension Group-Exhaust | 1 |
7e0831 Exhaust Extension Gp
| 7E***31 | Extension Group-Exhaust | 1 |
1w5054 Lines Gp-Air
| 1W***54 | Lines Group-Air; Air Lines Group | 1 |
7n4971 Manifold Gp-Exhaust
| 7N***71 | Manifold Group-Exhaust; Exhaust Manifold Group | 1 |
7n4970 Muffler Gp
| 7N***70 | Muffler Group | 1 |
5m2735 Prescreener Gp
| 5M***35 | Prescreener Group; Prescreener Group----------------------. | 1 |
Basic Engine
Crankshaft Bearing Replacements
| 1W***55 | Bearing (0.25mm Undersize) | 2 |
| 1W***56 | Bearing (0.51mm Undersize) | 2 |
| 1W***57 | Bearing (1.27mm Undersize) | 2 |
6n2393 Camshaft Gp-Single
| 6N***93 | Camshaft Group-Single; Camshaft Group-Single | 1 |
2w7486 Cover Gp-Valve Mechanism
| 2W***86 | Cover Group-Valve Mechanism; Valve Mechanism Cover Group | 1 |
7w3926 Crankshaft Gp
| 7W***26 | Crankshaft Group; Crankshaft Group | 1 |
2w7902 Cylinder Block As
| 2W***02 | Cylinder Block As | 1 |
1w4327 Cylinder Block As
| 1W***27 | Cylinder Block As | 1 |
1w4326 Cylinder Block Gp
| 1W***26 | Cylinder Block Group; Cylinder Block Group | 1 |
7c2320 Cylinder Head As-Service*R
| 7C***20 | Cylinder Head As | 1 |
7w9390 Cylinder Head As
| 7W***90 | Cylinder Head As | 1 |
7c2296 Cylinder Head As
| 7C***96 | Cylinder Head As | 1 |
7c3805 Cylinder Head As*R
| 7C***05 | Cylinder Head As | 1 |
7w9392 Cylinder Head Gp*R
| 7W***92 | Cylinder Head Group | 1 |
6n2467 Cylinder Head Gp*R
| 6N***67 | Cylinder Head Group; Cylinder Head Group | 1 |
7n5141 Drive Gp-Fan
| 7N***41 | Drive Group-Fan; Water Pump Drive Group | 1 |
7n6937 Flywheel Gp
| 7N***37 | Flywheel Group; Flywheel Group | 1 |
1w1355 Gear Gp-Front
| 1W***55 | Gear Group-Front; Front Gear Group | 1 |
7n6344 Housing Gp-Flywheel
| 7N***44 | Housing Group-Flywheel; Flywheel Housing Group | 1 |
2w4384 Housing Gp-Front
| 2W***84 | Housing Group-Front; Front Housing Group | 1 |
1w5554 Lifting Gp-Engine
| 1W***54 | Lifting Group | 1 |
6n8370 Pan Gp-Oil
| 6N***70 | Pan Group-Oil; Oil Pan Group | 1 |
8n4079 Rod & Piston Gp-4 Required
| 8N***79 | Piston & Rod Group; Connecting Rod And Piston Group | 1 |
2w8419 Piston Gp
| 2W***19 | Piston Group | 1 |
7n5138 Pulley Gp-Crankshaft
| 7N***38 | Pulley Group-Crankshaft; Auxiliary Drive Pulley Group | 1 |
7c7743 Support Gp-Engine & Transmission
| 7C***43 | Support Group-Engine & Tmsn | 1 |
1w5720 Valve Mechanism Gp
| 1W***20 | Valve Mechanism Group; Valve Mechanism Group | 1 |
Cab, Gauges And Accessories
5g0142 Gauge Gp
| 5G***42 | Gauge Group | 1 |
8y2320 Gauge Gp-Part 2 Of 2
| 8Y***20 | Gauge Group; Gauge Gp | 1 |
8y2320 Gauge Gp-Part 1 Of 2
| 8Y***20 | Gauge Group; Gauge Gp | 1 |
8y1356 Guard Gp-Vandalism
| 8Y***56 | Guard Group-Vandalism | 1 |
8y2322 Guard Gp-Vandalism
| 8Y***22 | Guard Group-Vandalism; Guard Gp-Vandalism | 1 |
5g0001 Rollover Ar
| 5G***01 | Rops Ar; Rollover Ar | 1 |
| 5G***49 | Washer Group-Windshield; Windshield Washer Group | 1 |
| 5G***57 | Wiring Group-Cab; Cab Wiring Group | 1 |
8y1769 Rops Ar-Enclosed
| 5G***01 | Rops Ar; Rollover Ar | 1 |
| 5G***37 | Heater Group-Cab; Cab Heater Group | 1 |
| 5G***93 | Mounting Group-Cab | 1 |
8y1147 Rops Ar-Open
| 5G***21 | Mounting Group-Rops | 1 |
| 5G***73 | Rops Group | 1 |
| 8Y***47 | Rops Ar-Open | 1 |
8y0266 Seat & Support Gp
| 8Y***66 | Seat & Support Group | 1 |
8y1177 Seat & Support Gp
| 8Y***77 | Seat & Support Group | 1 |
6s9800 Cab Gp-Part 3 Of 4
| 6S***00 | Cab Group; Cab Group | 1 |
6s9800 Cab Gp-Part 2 Of 4
| 6S***00 | Cab Group; Cab Group | 1 |
6s9800 Cab Gp-Part 4 Of 4
| 6S***00 | Cab Group; Cab Group | 1 |
6s9800 Cab Gp-Part 1 Of 4
| 6S***00 | Cab Group; Cab Group | 1 |
5g1020 Dash Gp
| 5G***20 | Dash Group | 1 |
5g0190 Door Gp-Lh-Part 2 Of 2
| 5G***90 | Door Group-Lh | 1 |
5g0190 Door Gp-Lh-Part 1 Of 2
| 5G***90 | Door Group-Lh | 1 |
5g0200 Door Gp-Rh-Part 1 Of 2
| 5G***00 | Door Group-Rh | 1 |
5g0200 Door Gp-Rh-Part 2 Of 2
| 5G***00 | Door Group-Rh | 1 |
8m7892 Gauge As-Ammeter
| 8M***92 | Gauge As-Ammeter; (Ammeter) | 1 |
5g0537 Heater Gp-Cab
| 5G***37 | Heater Group-Cab; Cab Heater Group | 1 |
5g2293 Mounting Gp-Cab
| 5G***93 | Mounting Group-Cab | 1 |
5g2294 Cab Gp-Mounting
| 5G***94 | Mounting Group-Cab | 1 |
5g0521 Mounting Gp-Rops
| 5G***21 | Mounting Group-Rops | 1 |
5g2002 Pressurizer Gp-Cab
| 5G***02 | Pressurizer Group; Cab Pressurizer Group | 1 |
5g2055 Pressurizer Gp-Part 1 Of 3
| 5G***55 | Pressurizer Group-Cab | 1 |
5g2055 Pressurizer Gp-Part 2 Of 3
| 5G***55 | Pressurizer Group-Cab | 1 |
5g2055 Pressurizer Gp-Part 3 Of 3
| 5G***55 | Pressurizer Group-Cab | 1 |
5g0673 Rops Gp
| 5G***73 | Rops Group | 1 |
8y4037 Seat Belt Gp
| 8Y***37 | Seat Belt Group | 1 |
7v9507 Belt Gp-Seat
| 7V***07 | Seat Belt Group | 1 |
6s7596 Seat Gp-Part 1 Of 2
| 6S***96 | Seat Group | 1 |
6s7596 Seat Gp-Part 2 Of 2
| 6S***96 | Seat Group | 1 |
2v7961 Suspension As-Seat
| 2V***61 | Suspension As-Seat | 1 |
5g0049 Washer Gp-Windshield
| 5G***49 | Washer Group-Windshield; Windshield Washer Group | 1 |
5g0974 Wiper Gp
| 5G***74 | Wiper Group; Wiper Group | 1 |
Chassis And Undercarriage
8y2319 Dash Gp
| 8Y***19 | Dash Group; Dash Gp | 1 |
8y2324 Firewall Gp
| 8Y***24 | Firewall Group | 1 |
8y1564 Firewall Gp
| 8Y***64 | Firewall Group | 1 |
8y2318 Firewall Gp
| 8Y***18 | Firewall Group; Firewall Gp | 1 |
8y1026 Frame Gp-Track Roller
| 8Y***26 | Frame Group-Track Roller | 1 |
1127875 Frame Gp-Track Roller
| 11***75 | Frame Group-Track Roller | 1 |
8y0268 Guard Gp-Track Roller
| 8Y***68 | Guard Group-Track Roller | 1 |
6y1675 Track Gp-2 Required
| 4K***38 | Bolt-Track (9/16-18 X 1.625 In); Bolt-Track-(9/16 X 18 X 1.6 In) | 152 |
| 5A***87 | Bolt-Track-( 9/16 X 18 X 3.0 In) | 4 |
| 6Y***85 | Shoe-Track | 38 |
6y1679 Track Gp-2 Required
| 4K***38 | Bolt-Track (9/16-18 X 1.625 In); Bolt-Track-(9/16 X 18 X 1.6 In) | 78 |
| 5A***87 | Bolt-Track-( 9/16 X 18 X 3.0 In) | 76 |
| 5P***83 | Bolt-Track-(9/16 X 18 X 4.3 In) | 2 |
9n4200 Track Gp-2 Required
| 4K***38 | Bolt-Track (9/16-18 X 1.625 In); Bolt-Track-(9/16 X 18 X 1.6 In) | 152 |
| 5A***87 | Bolt-Track-( 9/16 X 18 X 3.0 In) | 4 |
| 6Y***10 | Link As-Track | 1 |
6y1674 Track Gp-2 Required
| 4K***38 | Bolt-Track (9/16-18 X 1.625 In); Bolt-Track-(9/16 X 18 X 1.6 In) | 152 |
| 5A***87 | Bolt-Track-( 9/16 X 18 X 3.0 In) | 4 |
| 6Y***81 | Shoe-Track | 38 |
6s9359 Cleaner Bar Gp-Track
| 6S***59 | Cleaner Bar Group | 1 |
5g0441 Counterweight Gp-Front
| 5G***41 | Counterweight Group-Front | 1 |
6s8902 Counterweight Gp-Idler
| 6S***02 | Counterweight Group-Idler | 1 |
| 6Y***68 | Idler & Bearing As | 2 |
5g0779 Drawbar Gp
| 5G***79 | Drawbar Group; (Fixed) | 1 |
5g5317 Drawbar Gp-Swinging
| 5G***17 | Drawbar Group-Swinging | 1 |
5g8709 Frame Gp
| 5G***09 | Frame Group | 1 |
5g1185 Guard Gp-Bottom
| 5G***85 | Guard Group-Bottom | 1 |
5g2342 Guard Gp-Brush-Side
| 5G***42 | Guard Group-Brush | 1 |
5g2327 Guard Gp-Brush
| 5G***27 | Guard Group-Brush | 1 |
8y0743 Guard Gp-Radiator
| 8Y***43 | Guard Group-Radiator | 1 |
6s6166 Guard Gp-Radiator Hinged
| 6S***66 | Guard Group-Radiator Hinged; Radiator Hinger Guard Group | 1 |
6s8323 Guard Gp-Radiator Hinged
| 6S***23 | Guard Group-Radiator Hinged | 1 |
5g8703 Guard Gp-Recoil
| 5G***03 | Guard Group-Recoil Mechanism | 1 |
5g0381 Guard Gp-Recoil Mechanism
| 5G***81 | Guard Group-Recoil Mechanism | 1 |
8y2309 Hood & Guard Gp
| 8Y***09 | Hood & Guard Group | 1 |
8y0216 Hood & Guard Gp
| 8Y***16 | Hood & Guard Group | 1 |
6s3864 Hook Gp-Front Pull
| 6S***64 | Hook Group-Front Pull | 1 |
6y1368 Idler & Bearing As
| 6S***95 | Bearing Assembly | 2 |
| 6S***33 | Bearing | 1 |
| 6Y***68 | Idler & Bearing As | 1 |
5g8729 Idler Gp-Front-Part 2 Of 2
| 5G***29 | Idler Group-Front | 1 |
6s7272 Idler Gp-Front-Part 2 Of 2
| 6S***72 | Idler Group-Front | 1 |
6s7272 Idler Gp-Front-Part 1 Of 2
| 6S***72 | Idler Group-Front | 1 |
5g8729 Idler Gp-Front-Part 1 Of 2
| 5G***29 | Idler Group-Front | 1 |
6y1512 Link As-Track
| 6Y***12 | Link As-Track | 1 |
6y1510 Link As-Track
| 6Y***10 | Link As-Track | 1 |
3t4353 Roller Gp-Double Flange-4 Required
| 3T***53 | Roller Group-Track; Double Flange Track Roller Group | 1 |
3t4352 Roller Gp-Single Flange-8 Required
| 3T***52 | Roller Group-Track; Single Flange Track Roller Group | 1 |
6s3609 Roller Gp-Track Carrier-2 Required
| 6S***09 | Roller Group-Track Carrier; Track Carrier Roller Group | 1 |
6y3882 Seal & Bushing Gp-Track
| 5G***47 | Stopper; (Rubber) | 37 |
| 6T***06 | Seal Assembly | 74 |
| 6Y***73 | Plug; (Clear) | 37 |
8y2911 Spring Gp-Recoil
| 8Y***11 | Spring Group-Recoil | 1 |
5g0378 Support Gp-Undercarriage
| 5G***78 | Support Group-Undercarriage | 1 |
5g0379 Support Gp-Undercarriage
| 5G***79 | Support Group-Undercarriage | 1 |
5g3575 Suppression Gp-Sound
| 5G***75 | Suppression Group-Sound | 1 |
8y0872 Sweep Gp
| 8Y***72 | Sweep Group | 1 |
Cooling System
9n5659 Cooler Gp-Engine Oil
| 9N***59 | Cooler Group-Engine Oil | 1 |
7c7744 Cooler Gp-Engine Oil
| 7C***44 | Cooler Group-Engine Oil | 1 |
7n9989 Fan Gp-Blower
| 7N***89 | Fan Group-Blower | 1 |
4n2220 Fan Gp-Suction-6 Blade
| 4N***20 | Fan Group-Suction; Suction Fan Group | 1 |
6n9739 Heater Gp-Jacket Water (750 Watt, 120 Volt)
| 6N***39 | Heater Group-Jacket Water; Jacket Water Heater Group | 1 |
6n9125 Heater Gp-Jacket Water (750 Watt, 120 Volt)
| 6N***25 | Heater Group-Jacket Water | 1 |
4n0188 Lines Gp-Water
| 4N***88 | Lines Group-Water; Water Lines Group | 1 |
4n0660 Pump Gp-Water
| 4N***60 | Pump Group-Water; Water Pump Group | 1 |
7c7740 Radiator Gp
| 7C***40 | Radiator Group | 1 |
7c7741 Radiator Gp
| 7C***41 | Radiator Group | 1 |
Engine Arrangement
7e6635 Engine Ar-Part 2 Of 2
| 1W***20 | Valve Mechanism Group; Valve Mechanism Group | 1 |
| 2W***03 | Pump Group-Fuel Transfer; Fuel Transfer Pump Group | 1 |
| 2W***97 | Pump Group-Oil-Without Housing | 1 |
9y0792 Engine Ar-Part 1 Of 2
| 1N***24 | Filter Group-Oil; Oil Filter Group | 1 |
| 1W***67 | Gauge Group-Oil Level (Dipstick) | 1 |
| 1W***54 | Lines Group-Fuel Injection; Fuel Injection Lines Group | 1 |
7e6635 Engine Ar-Part 1 Of 2
| 1N***24 | Filter Group-Oil; Oil Filter Group | 1 |
| 1W***67 | Gauge Group-Oil Level (Dipstick) | 1 |
| 1W***54 | Lines Group-Fuel Injection; Fuel Injection Lines Group | 1 |
9y0792 Engine Ar-Part 2 Of 2
| 1W***20 | Valve Mechanism Group; Valve Mechanism Group | 1 |
| 2W***03 | Pump Group-Fuel Transfer; Fuel Transfer Pump Group | 1 |
| 2W***97 | Pump Group-Oil-Without Housing | 1 |
Fuel System And Governor
8y1150 Control Gp-Governor
| 8Y***50 | Control Group-Governor | 1 |
6s8967 Control Gp-Governor
| 6S***67 | Control Group-Governor | 1 |
2w0262 Camshaft As
| 2W***62 | Camshaft As | 1 |
5g3612 Cap Gp-Fuel Tank Protection
| 5G***12 | Cap Group-Protection; Fuel Filler Protection Cap Group | 1 |
7e3734 Filter Gp-Fuel
| 7E***34 | Filter Group-Fuel | 1 |
9y1897 Filter Gp-Fuel
| 9Y***97 | Filter Group-Fuel; Fuel Filter Group | 1 |
1w8730 Governor Gp-Part 2 Of 3
| 1W***30 | Governor Group | 1 |
1w8730 Governor Gp-Part 1 Of 3
| 1W***30 | Governor Group | 1 |
1w8730 Governor Gp-Part 3 Of 3
| 1W***30 | Governor Group | 1 |
5g4583 Lines Gp-Fuel
| 5G***83 | Lines Group-Fuel | 1 |
7n0042 Lines Gp-Fuel Injection
| 7N***42 | Lines Group-Fuel Injection | 1 |
1w1354 Lines Gp-Fuel Injection
| 1W***54 | Lines Group-Fuel Injection; Fuel Injection Lines Group | 1 |
1w6539 Pump Gp-Fuel Injection
| 1W***39 | Pump Group-Fuel Injection | 1 |
2w0263 Pump Gp-Fuel Injection
| 2W***63 | Pump Group-Fuel Injection | 1 |
4n4314 Pump Gp-Fuel Priming
| 4N***14 | Pump Group-Fuel Priming; Fuel Priming Pump Group | 1 |
1w0568 Pump Gp-Fuel Transfer
| 1W***68 | Pump Group-Fuel Transfer | 1 |
2w4403 Pump Gp-Fuel Transfer
| 2W***03 | Pump Group-Fuel Transfer; Fuel Transfer Pump Group | 1 |
7w0189 Governor & Fuel Injection Pump Gp
| 7W***89 | Pump Group-Gov & Fuel Inj; Governor & Fuel Injection Pump Group | 1 |
8y0217 Tank Gp-Fuel
| 8Y***17 | Tank Group-Fuel | 1 |
4w5063 Torque Control Gp
| 4W***63 | Torque Control Group | 1 |
Hydraulic System
9j8698 Cylinder Gp-Angling-(Chg 1-4)-2 Required
| 9J***98 | Angling Cylinder Group; Angling Cylinder Group | 1 |
8y0637 Control Gp-Hydraulic Hand
| 8Y***37 | Control Group-Hydraulic Hand; Control Gp-Hydraulic Hand | 1 |
8y0242 Control Gp-Hydraulic Hand
| 6S***91 | Film-Instruction; Film-To Top Of Hydraulic Tank | 1 |
| 8Y***42 | Control Group-Hydraulic Hand; Control Gp-Hydraulic Hand | 1 |
| 8Y***37 | Control Group-Hydraulic Hand; Control Gp-Hydraulic Hand | 1 |
8y0638 Control Gp-Hydraulic Hand
| 8Y***38 | Control Group-Hydraulic Hand; Control Gp-Hydraulic Hand | 1 |
8y0245 Control Gp-Hydraulic Hand
| 6S***91 | Film-Instruction; Film-To Top Of Hydraulic Tank | 1 |
| 8Y***45 | Control Group-Hydraulic Hand; Control Gp-Hydraulic Hand | 1 |
| 8Y***37 | Control Group-Hydraulic Hand; Control Gp-Hydraulic Hand | 1 |
8y0639 Control Gp-Hydraulic Hand
| 8Y***39 | Control Group-Hydraulic Hand; Control Gp-Hydraulic Hand | 1 |
8y0240 Hydraulic Ar-3 Valve
| 8J***12 | Pump Group-Gear; Gear Pump Group-Single Section | 1 |
| 8Y***40 | Hydraulic Ar | 1 |
| 8Y***41 | Valve & Mounting Group; Valve & Mounting Gp | 1 |
8y0243 Hydraulic Ar-4 Valve
| 8J***12 | Pump Group-Gear; Gear Pump Group-Single Section | 1 |
| 8Y***43 | Hydraulic Ar | 1 |
| 8Y***44 | Valve & Mounting Group; Valve & Mounting Gp | 1 |
7j9223 Cylinder Gp-Lift-(Chg 1-9)-2 Required
| 7J***23 | Lift Cylinder Group | 1 |
8y0261 Lines Gp-Angle Cylinder
| 8Y***61 | Lines Group-Angle Cylinder | 1 |
8y0257 Lines Gp-Angle Cylinder
| 8Y***57 | Lines Group-Angle Cylinder; Lines Gp-Angling Cylinder | 1 |
8y0258 Lines Gp-Lift Cylinder
| 8Y***58 | Lines Group-Lift Cylinder; Lines Gp-Lift Cylinder | 1 |
8y0247 Lines Gp-Pump
| 8Y***47 | Lines Group-Pump; Lines Gp-Pump | 1 |
8y0246 Lines Gp-Rear Attachment
| 8Y***46 | Lines Group-Rear Attachment; Lines Gp-Rear Attachment | 1 |
8y0260 Lines Gp-Tilt Cylinder
| 8Y***60 | Lines Group-Tilt Cylinder; Lines Gp-Tilt Cylinder | 1 |
8y0262 Lines Gp-Tilt Cylinder
| 8Y***62 | Lines Group-Tilt Cylinder | 1 |
9g9288 Cover Gp-Protection
| 9G***88 | Protection Cover Group; -Hydraulic Tank-Steering Tank Fill Cap-Hydraulic Tank Fill Cap | 1 |
9j8674 Cylinder Gp-Tilt-(Chg 0-4)
| 9J***74 | Tilt Cylinder Group; Tilt Cylinder Group | 1 |
8y0244 Valve & Mounting Gp
| 8Y***44 | Valve & Mounting Group; Valve & Mounting Gp | 1 |
8y0241 Valve & Mounting Gp
| 8Y***41 | Valve & Mounting Group; Valve & Mounting Gp | 1 |
9t7249 Valve Gp-Bank-3
| 9T***49 | Valve Group-Bank | 1 |
9t7250 Valve Gp-Bank-4
| 9T***50 | Valve Group-Bank; Valve Gp-Bank | 1 |
9t7641 Valve Gp-Ripper Control
| 9T***41 | Valve Group-Control; -Ripper | 1 |
9t7651 Valve Gp-Control
| 9T***51 | Valve Group-Control; -Hoist | 1 |
9t7642 Valve Gp-Control
| 9T***42 | Valve Group-Control; -Angle, Tilt | 1 |
9t7638 Valve Gp-Relief
| 9T***38 | Valve Group-Relief; (Pilot Operated) | 1 |
9t7639 Valve Gp-Relief
| 9T***39 | Valve Group-Relief; (Direct Operated) | 1 |
7j9920 Cylinder Gp-Ripper-(Chg 8)
| 7J***20 | Cylinder Group-Ripper | 1 |
7j9920 Cylinder Gp-Ripper-(Chg 6,7)
| 7J***20 | Cylinder Group-Ripper | 1 |
6s3559 Lines Gp-Ripper
| 6S***59 | Lines Group-Ripper; Ripper Lines Group | 1 |
8j4512 Pump Gp-Gear-Single Section
| 8J***12 | Pump Group-Gear; Gear Pump Group-Single Section | 1 |
3g5385 Pump Gp-Gear
| 3G***85 | Pump Group-Gear | 1 |
8j4513 Pump Gp-Gear
| 8J***13 | Pump Group-Gear | 1 |
5g0099 Tank & Filter Gp-Hydraulic
| 5G***99 | Tank & Filter Group | 1 |
5g0013 Tank Gp-Hydraulic
| 5G***13 | Tank Group-Hydraulic | 1 |
6s4767 Valve Gp-Breaker Relief
| 6S***67 | Valve Group-Breaker Relief | 1 |
9t7634 Valve Gp-Check
| 9T***34 | Valve Group-Check; -Makeup | 1 |
Implements
3g3353 Cutting Edge & Bit Gp
6y2825 Bulldozer Ar
| 3G***40 | C-Frame Group | 1 |
| 5G***69 | Trunnion Mounting Group; Trunnion Mounting Group | 1 |
| 6Y***25 | Bulldozer Ar-Angling | 1 |
6y2824 Bulldozer Ar
| 5G***69 | Trunnion Mounting Group; Trunnion Mounting Group | 1 |
| 6Y***24 | Bulldozer Ar-Angling | 1 |
| 7J***23 | Lift Cylinder Group | 2 |
9w9579 C-Frame Gp-Power Angling
3g3440 C-Frame Gp-Power Angling
5g2752 Drive Ar-Winch
| 5G***18 | Drive Group-Power Take-Off; Power Take-Off Drive Group | 1 |
| 5G***52 | Drive Ar-Winch | 1 |
| 5G***65 | Pump & Lines Group; Pump And Lines Group | 1 |
8y2452 Drive Ar-Winch
| 5G***18 | Drive Group-Power Take-Off; Power Take-Off Drive Group | 1 |
| 8Y***51 | Pump & Lines Group | 1 |
| 8Y***52 | Drive Ar-Winch | 1 |
8y6570 Guard Gp-Brush
8y2410 Lines & Pump Gp
| 8Y***10 | Pump & Lines Group; Lines & Pump Gp-Winch | 1 |
8y2451 Lines & Pump Gp
| 8Y***51 | Pump & Lines Group | 1 |
5g3774 Pump & Lines Gp
| 5G***74 | Pump & Lines Group | 1 |
5g2865 Lines & Pump Gp
| 5G***65 | Pump & Lines Group; Pump And Lines Group | 1 |
3g5046 Pump Gp-Gear
| 3G***46 | Pump Group-Gear | 1 |
6e1413 Pump Gp-Gear
| 6E***13 | Pump Group-Gear | 1 |
1u0414 Pump Gp-Gear
| 1U***14 | Pump Group-Gear | 1 |
5g0269 Mounting Gp-Trunnion
6y5351 Winch Ar-Open Rops
6y5350 Winch Ar-With Cab
6y2218 Winch Ar-Open Rops
6y2465 Winch Ar-With Cab
9w9580 Blade Gp-Angling
| 9W***80 | Blade Group-Angling | 1 |
9w9589 Blade Gp-Angling
| 9W***89 | Blade Group-Angling | 1 |
6y1467 Case & Covers Gp
| 6Y***67 | Case & Covers Group-Winch | 1 |
6y1906 Gear & Clutch Gp-Part 1 Of 2
| 6Y***06 | Clutch & Gear Group | 1 |
6y1906 Gear & Clutch Gp-Part 2 Of 2
| 6Y***06 | Clutch & Gear Group | 1 |
5g3938 Control Gp-Towing Winch
| 5G***38 | Control Group-Winch; Control Gp-Towing Winch | 1 |
6y2216 Control Gp-Winch
| 6Y***16 | Control Group-Winch | 1 |
6y2048 Control Gp-Winch
5g2636 Control Gp-Towing Winch
5g4331 Control Gp-Towing Winch
6y2175 Conversion Ar-Winch
6y2176 Conversion Ar-Winch
6y1959 Conversion Gp-Winch
| 6Y***59 | Conversion Group-Winch | 1 |
6y2217 Conversion Gp-Winch
| 6Y***17 | Conversion Group-Winch | 1 |
7g9447 Covers Gp-Shipping
| 0S***09 | Bolt (3/4") Filler Tube Assembly To Transfer Drive Case | 2 |
| 2M***80 | Seal--To Connector Pump Outlet | 1 |
| 3T***85 | Cover-Shipping; Shipping Cover | 1 |
7g9470 Drive Gp-Winch
| 7G***70 | Drive Group-Winch | 1 |
8j7146 Edge Gp-Cutting
6y2111 Lines Gp-Winch
| 6Y***11 | Lines Group-Winch | 1 |
6t2288 Manifold Gp
| 6T***88 | Manifold Group | 1 |
7g6800 Manifold Gp
| 7G***00 | Manifold Group | 1 |
8j3294 Mounting Gp-Ripper
7g9423 Mounting Gp-Winch
9j9005 Ripper Ar
8j3334 Ripper Gp
8j5313 Tooth Gp
6t2289 Valve Gp
| 6T***89 | Valve Group | 1 |
7g6861 Valve Gp
| 7G***61 | Valve Group | 1 |
7g6799 Valve Gp-Selector & Pressure Control
| 7G***99 | Valve Group-Selector & Press Cont | 1 |
6t2287 Valve Gp-Selector & Pressure Control
| 6T***87 | Valve Group-Selector & Press Cont | 1 |
6y2055 Winch Ar-Towing
Lubrication System
6n3382 Breather Gp
| 6N***82 | Breather Group; Breather Group | 1 |
1n3224 Filter Gp-Oil
| 1N***24 | Filter Group-Oil; Oil Filter Group | 1 |
9y1898 Fumes Disposal Gp
| 9Y***98 | Fumes Disposal Group; Fumes Disposal Group | 1 |
1w0367 Gauge Gp-Oil Level (Dipstick)
| 1W***67 | Gauge Group-Oil Level (Dipstick) | 1 |
7w0332 Kit-Pcv Breather
| 7W***32 | Kit-Pcv Breather | 1 |
2w6697 Pump Gp-Oil
| 2W***97 | Pump Group-Oil-Without Housing | 1 |
Power Train-Power Transmission Unit
8y0115 Control Gp-Decelerator-Part 2 Of 2
| 8Y***15 | Control Group-Decelerator | 1 |
8y0115 Control Gp-Decelerator-Part 1 Of 2
| 8Y***15 | Control Group-Decelerator | 1 |
8y0234 Final Drive Gp
| 8Y***34 | Final Drive Group | 1 |
8y0235 Final Drive Gp
| 8Y***35 | Final Drive Group | 1 |
6y5504 Adapter Gp-Sprocket
| 6Y***04 | Adapter Group-Sprocket | 1 |
9p6238 Case & Parts Gp-Part 1 Of 2
| 9P***38 | Case & Parts Group-Planetary | 1 |
9p6238 Case & Parts Gp-Part 2 Of 2
| 9P***38 | Case & Parts Group-Planetary | 1 |
5g1060 Control Gp-Transmission-Part 2 Of 2
| 5G***60 | Control Group-Transmission | 1 |
5g1060 Control Gp-Transmission-Part 1 Of 2
| 5G***60 | Control Group-Transmission | 1 |
9w9496 Control Gp-Transmission Hydraulic
| 9W***96 | Control Group-Transmission Hydraulic; Control Gp-Transmission Hydraulic | 1 |
5g1818 Drive Gp-Power Take-Off
| 5G***18 | Drive Group-Power Take-Off; Power Take-Off Drive Group | 1 |
9p4540 Drive Gp-Pump
| 9P***40 | Drive Group-Pump | 1 |
5g1239 Filler Gp-Power Train Oil
| 5G***39 | Filler Group-Power Train Oil | 1 |
9p6277 Filter Gp-Transmission
| 9P***77 | Filter Group-Transmission; -Transmission | 1 |
9w9485 Transfer Case & Gear Gp
| 9W***85 | Gear & Case Group-Transfer | 1 |
5g8713 Gear Gp-Bevel
| 5G***13 | Gear Group-Bevel | 1 |
5g0905 Lines Gp-Powertrain Oil
| 5G***05 | Lines Group-Power Train Oil | 1 |
5g1378 Lines Gp-Torque Converter Cooler
| 5G***78 | Lines Group-Torque Conv Cooler | 1 |
9w9486 Planetary Gp-Transmission-Part 1 Of 2
| 9W***86 | Planetary Group | 1 |
9w9486 Planetary Gp-Transmission-Part 2 Of 2
| 9W***86 | Planetary Group | 1 |
9p7240 Pump Gp-Gear
| 9P***40 | Pump Group-Gear | 1 |
9p7239 Pump Gp-Gear
| 9P***39 | Pump Group-Gear | 1 |
6y2047 Segment Gp-Sprocket-2 Required
| 6Y***47 | Segment Group-Sprocket | 1 |
5t8739 Spider & Bearing Gp
| 5T***39 | Spider & Bearing Group | 1 |
1t1786 Torque Converter Gp
| 1T***86 | Torque Converter Group | 1 |
1t1390 Torque Converter Gp
| 1T***90 | Torque Converter Group | 1 |
9w9483 Transmission Ar
| 1T***86 | Torque Converter Group | 1 |
| 6V***18 | Planetary Transmission | 0 |
| 6V***19 | Kit-Gasket; (Transmission Filter) | 0 |
9w9484 Transmission Ar
| 1T***90 | Torque Converter Group | 1 |
| 6V***18 | Planetary Transmission | 0 |
| 6V***19 | Kit-Gasket; (Transmission Filter) | 0 |
5g1823 Joint Gp-Universal
| 5G***23 | Universal Joint Group | 1 |
9w9495 Valve Gp
| 9W***95 | Valve Group | 1 |
9w9494 Valve Gp-Selector & Pressure Control
| 9W***94 | Valve Group-Selector & Press Cont | 1 |
Service Equipment And Supplies
Name Plates & Films-Part 1 Of 2
| 03***91 | Pop - Rivet (To Secure Safety Lable) | 4 |
| 3E***79 | Plate-Eec Certification | 1 |
| 3N***90 | Plate Serial Number; On R.H. Rear Bank Of Cylinder Block As Viewed From Rear Of Engine | 1 |
Name Plates & Films-Part 2 Of 2
| 1P***07 | Film-Symbol; 2 On Bottom Of Upper Frame Below Engine. 2 On Front Of Upper Frame Above Boom Articulation | 4 |
| 6V***14 | Film-Identification; (Oil Filter) | 1 |
| 6V***93 | Film-Identification | 1 |
Starting And Electrical System
6t7160 Lamp Gp
| 6T***60 | Lamp Group | 1 |
8y1213 Lighting Gp-3 Lamp
| 8Y***13 | Lighting Group-3 Lamp | 1 |
8y1144 Warning Gp-Backup
| 8Y***44 | Warning Group-Backup | 1 |
8n2268 Alternator Gp
| 8N***68 | Alternator Group-Charging | 1 |
1w4263 Alternator Gp
| 1W***63 | Alternator Group-Charging | 1 |
8n2822 Alternator Gp
| 6V***78 | Nut; (10-32-Thd) | 2 |
| 8F***34 | Lockwasher; (External Teeth) | 2 |
| 8N***68 | Alternator Group-Charging | 1 |
7n4784 Alternator Gp
| 7N***84 | Alternator Group-Charging | 1 |
5g0237 Battery & Wiring Gp-Part 2 Of 3
| 5G***37 | Battery & Wiring Group | 1 |
5g0237 Battery & Wiring Gp-Part 3 Of 3
| 5G***37 | Battery & Wiring Group | 1 |
5g0237 Battery & Wiring Gp-Part 1 Of 3
| 5G***37 | Battery & Wiring Group | 1 |
6s3548 Battery Gp
| 6S***48 | Battery Group | 1 |
8y1223 Cover Gp-Rear
| 8Y***23 | Cover Group-Rear | 1 |
8y1562 Horn Gp-Electric
| 8Y***62 | Horn Group-Electric | 1 |
5g2541 Starting Aid Gp-Ether
| 5G***41 | Starting Aid Group-Ether | 1 |
3e1865 Starting Motor Gp-Electric
| 3E***65 | Starting Motor Group-Electric | 1 |
4n0241 Starting Motor Gp-Electric
| 4N***41 | Starting Motor Group-Electric | 1 |
4n0190 Starting Motor Gp-Electric
| 4N***90 | Starting Motor Group-Electric; Electric Starting Motor Group | 1 |
9x0354 Starting Motor Gp-Electric
| 9X***54 | Starting Motor Group-Electric | 1 |
9g5517 Switch As
| 9G***17 | Switch As | 1 |
8n0410 Switch Gp
| 8N***10 | Switch Group; (Magnetic) | 1 |
5g0457 Wiring Gp-Cab
| 5G***57 | Wiring Group-Cab; Cab Wiring Group | 1 |
Steering Clutches And Brakes
8y1087 Brake Gp-Steering-Part 2 Of 3
| 8Y***87 | Brake Group-Steering | 1 |
8y1588 Brake Gp-Steering-Part 1 Of 3
| 8Y***88 | Brake Group-Steering; Brake Gp-Steering | 1 |
8y2316 Brake Gp-Steering-Hand-Part 2 Of 4
| 8Y***16 | Brake Group-Steering; Brake Gp-Steering | 1 |
8y2316 Brake Gp-Steering-Hand-Part 1 Of 4
| 8Y***16 | Brake Group-Steering; Brake Gp-Steering | 1 |
8y2316 Brake Gp-Steering-Hand-Part 3 Of 4
| 8Y***16 | Brake Group-Steering; Brake Gp-Steering | 1 |
8y1087 Brake Gp-Steering-Part 1 Of 3
| 8Y***87 | Brake Group-Steering | 1 |
8y1588 Brake Gp-Steering-Part 2 Of 3
| 8Y***88 | Brake Group-Steering; Brake Gp-Steering | 1 |
8y1087 Brake Gp-Steering-Part 3 Of 3
| 8Y***87 | Brake Group-Steering | 1 |
8y1588 Brake Gp-Steering-Part 3 Of 3
| 8Y***88 | Brake Group-Steering; Brake Gp-Steering | 1 |
8y2316 Brake Gp-Steering-Hand-Part 4 Of 4
| 8Y***16 | Brake Group-Steering; Brake Gp-Steering | 1 |
8y0270 Control Gp-Steering-Decelerator
| 8Y***70 | Control Group-Steering | 1 |
8y1542 Control Gp-Steering Clutch-Part 2 Of 2
| 8Y***42 | Control Group-Steering Clutch | 1 |
8y1542 Control Gp-Steering Clutch-Part 1 Of 2
| 8Y***42 | Control Group-Steering Clutch | 1 |
8y2312 Steering Ar
| 8Y***12 | Steering Ar | 1 |
| 8Y***16 | Brake Group-Steering; Brake Gp-Steering | 1 |
| 8Y***18 | Firewall Group; Firewall Gp | 1 |
5g6103 Case Gp-Steering Clutch
| 5G***03 | Case Group-Steering Clutch | 1 |
5g8725 Clutch Gp-Steering
| 5G***25 | Clutch Group-Steering; Clutch Gp-Steering Brake | 1 |
5g8121 Valve Gp
| 5G***21 | Valve Group; (Right Steer. | 1 |
5g8120 Valve Gp
| 5G***20 | Valve Group; (Lh Control) | 1 |
D4C serial number reference
The D4C serial/PIN plate is riveted to the machine's main frame, most often at the rear of the frame or on the transmission/final-drive housing; some base-run units instead carry it on the left side of the engine compartment near the operator's platform. Read the first three characters as the serial number prefix, which pins down the specific model, series/generation, and build plant; the digits that follow are the sequential unit number within that prefix range. Work from the stamped metal plate itself rather than a decal, since decals get replaced or swapped over a machine's life.
| Prefix | Identifies | Notes |
|---|---|---|
| 1RJ | D4C (base run, pre-Series II) - Std/XL gauge | Standard/XL-gauge D4C from the initial production run, 1987-1990. Paired with the 3204 diesel and a 3-speed powershift transmission; steering is by mechanical clutch/brake. |
| 2CJ | D4C (base run, pre-Series II) - LGP gauge | Low Ground Pressure, wide-gauge version of the same base-run D4C as 1RJ, same era and same 3204 engine, different undercarriage width. |
| 7KG | D4C Series II | Series II production, roughly 1990-1993, assembled at the Japan plant. Paired with the 3204 four-cylinder diesel and a 3-speed powershift, planetary-type transmission. |
| 9BG | D4C Series II | Listed together with 7KG in factory parts-manual coverage for the same Series II generation, likely a different assembly plant. Single-source pairing - confirm exact plant/config with your dealer. |
| 6YL | D4C Series III | Series III production, starting around 1994 and running to the end of the model line. Uses the 3046 six-cylinder diesel; built in XL and LGP gauges with powershift or hydrostatic transmission depending on configuration. |
| 7SL | D4C Series III | Series III-era prefix documented on D4C-specific service parts for this range, listed alongside 6YL in factory coverage for XL/LGP tractors of this generation. Confirm exact configuration with your dealer. |
| 1FW | D4C, Japan-built plant - Hystat | Japan-plant D4C built roughly 1987-1992, pairing the 3046 six-cylinder diesel with the Hystat (hydrostatic) drivetrain, ahead of that combination's rollout on other Series III tractors. Both LGP and XL-gauge machines are reported under this prefix, with steering-clutch and control-valve running changes noted partway through the range. Confirm exact gauge/config with your dealer. |
Frequently asked questions
What engine does the Caterpillar D4C use?
It depends on series. Series I and Series II D4C tractors run the Cat 3204, a 4-cylinder diesel rated around 60 kW (80 hp) gross. Series III tractors switch to the Cat 3046, a 6-cylinder diesel rated near 66 kW (88 hp) gross and 60 kW (80-81 hp) net, offered with either the standard powershift transmission or the optional Hystat hydrostatic drive.
What is the operating weight of a Caterpillar D4C?
Operating weight runs roughly 7,266-7,905 kg (16,019-17,428 lb) depending on series and configuration. LGP low-ground-pressure machines with wider tracks typically sit toward the heavier end of that range, while XL wide-gauge and Standard-gauge tractors run lighter. Confirm the exact figure against the specific series and blade/undercarriage option before ordering undercarriage or lift parts.
What replaced the Caterpillar D4C?
Caterpillar replaced the D4C with the D4G small-dozer generation starting in 2001, later followed by the D4H. The D4C itself followed the D4D-era small dozers that preceded Caterpillar's C-series reboot. Note that Caterpillar has reused the "D4" nameplate across unrelated eras, so this lineage is specific to the 1987-2001 D3C/D4C/D5C platform.
What D4C owners discuss
What engine problems come up most with early Series I/II D4C dozers running the Cat 3204?
Hard starting is the top complaint, usually traced to weak injectors, low compression, or a worn injection pump rather than a single bad part. The 3204 has no factory cylinder liners unless a prior overhaul bored the block and pressed in dry sleeves, so a scored bore or spun bearing often means swapping the whole engine rather than doing an in-frame repair. Blue-white smoke and blowby on higher-hour units point to worn pistons, rings, and bore rather than one component. Some owners also report fuel migrating into the crankcase when the injection pump's front seal fails. Budget for a full rebuild or engine exchange once hours climb, not a quick top-end fix.
How does the Series III six-cylinder Cat 3046 compare to the earlier four-cylinder 3204 in real-world reliability?
The 3046 (turbocharged inline-six, roughly 5.0 L/305 cu in) is generally regarded as smoother and stronger than the 3204, and the block-level failures common on the 3204 (cracked blocks, no-liner rebuilds) are rarely reported on Series III machines. On Series III units the recurring complaints shift away from the engine and toward the Hystat drivetrain and dash electrical circuits instead. Routine fuel-system and cooling-system upkeep still matters, but engine-specific horror stories are far less common than on the 3204-powered earlier builds.
My Hystat D4C suddenly lost drive and stopped moving in its tracks - what's usually behind that?
Owners report the coupling between the engine output and the hydrostatic drive input can partially disengage and cause a sudden, complete loss of movement that looks like a transmission failure but isn't. Before assuming a pump or drive motor has failed, check charge-pressure filters, the charge pump, and the drive coupling itself, since a stuck bypass condition or a slipping coupling can mimic an internal Hystat failure. Starter relay faults and loose connections under the dash are also a known nuisance on Series III Hystat machines and can cause intermittent no-start or no-response symptoms that get mistaken for drivetrain trouble. Because a sudden loss of drive on a slope is a safety issue, have your dealer verify the coupling and charge-pressure readings before returning the machine to grade work.
Do the mechanical clutch-and-brake steering D4C models have any known steering quirks?
On direct-drive (non-Hystat) D4C models the steering clutch pack itself has no field adjustment; only the brake band has an external adjustment point, reached through a plug near the operator's seat. Persistent hard steering or a clutch that won't fully release is more often traced to a worn bearing on the steering-valve spool cam, or a steering valve that is out of adjustment or bypassing internally, rather than the clutch itself. If the brake-band adjustment keeps drifting out of spec quickly, check for a worn or sheared adjusting screw before condemning the clutch. Because steering and braking affect operator safety on grade, have your dealer verify clutch and brake-band adjustment rather than running it marginal.
What undercarriage wear pattern is typical, and does the LGP version change anything?
Running tracks too tight is a common self-inflicted wear driver: excess tension loads up bushing-to-sprocket contact and track-to-idler-roller contact faster than normal running clearance would. Track derailing is usually linked to uneven roller wear or a worn idler bushing letting the idler cock outward, so checking track-frame alignment is a standard first step. The LGP variant runs wider shoes (about 635 mm/25 in versus narrower standard shoes) for flotation in soft or wet ground, which spreads wear differently across the chain. When judging remaining life, measure pitch across several links on a flat surface rather than eyeballing one link, since overall chain stretch can hide behind a normal-looking single link. Many owners run a stretched chain until bushings start opening up or the pins get knocked loose by roller flanges, as long as sprocket engagement still stays smooth.
What electrical faults come up repeatedly on D4C dash and starting circuits?
A recurring complaint is a dead dash and gauges even though the machine will start by jumping the solenoid directly - this is commonly traced to a tripped breaker or a loose connection ahead of the ignition switch, and replacing the ignition switch alone typically does not fix it. Starter relay failures and corroded connections under the dash are also reported, with a single click at the key usually pointing to the relay rather than the starter itself. General sensor fault codes are more often caused by a corroded or shorted harness connector (short to ground or to a power source) than by the sensor itself. Check harness connectors, grounds, and breakers before swapping the sensor or switch.
What should I check before buying a used D4C?
Confirm the hour meter reading matches the wear visible in the cab and on control linkages; mismatched hours are a red flag. Inspect the blade, cutting edge, and trunnion pins for wear, and look for welding or plate lines that indicate prior repair or refacing. Undercarriage condition is the single biggest cost driver on this class of dozer - measure track pitch across several links on a flat surface rather than one link, and check for flattened rollers or worn pads, since a full undercarriage replacement can cost more than the asking price of the machine. Check engine and hydraulic fluid color and condition as an indicator of maintenance history, then run the machine at least half an hour watching for abnormal temperature rise or pressure drop. Confirm which engine and drivetrain configuration the machine has (four-cylinder clutch-and-brake versus six-cylinder Hystat), since parts sourcing and rebuild costs differ meaningfully between them. If you plan to do your own upkeep, source the correct service manual for that specific series before you buy.
Compiled from owner and technician discussions across the industry — experiences vary by serial range and machine history.
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