Caterpillartrack-type tractorbulldozer
Caterpillar D5C PAT
Maintenance schedule, common problems & OEM parts breakdown
The Caterpillar D5C PAT is a small-class track-type tractor (crawler dozer) fitted from the factory with Caterpillar's PAT (Power Angle Tilt) blade group, part of the smaller "low-drive" dozer family Caterpillar built alongside the D3C and D4C. The PAT-badged, powershift-driveline configuration covered here entered production in the early 1990s, with documented serial prefixes placing it roughly 1991 to 1993, and runs the Cat 3204, a turbocharged 4-cylinder diesel of about 4.4 L (269 cu in) rated near 90 hp (67 kW) net. It pairs with a 3-speed forward/reverse powershift transmission, torque converter, and differential (clutch-and-brake) steering through a bevel gear and steering clutch compartment, not the hydrostatic drive used on some later machines carrying the D5C name. Operating weight for a standard-gauge PAT unit runs around 19,800 lb (8,981 kg), varying with attachments such as a rear ripper, winch, or front counterweight; a wider low-ground-pressure undercarriage (PATLGP) was offered on the same chassis for reduced flotation pressure. The adjustable-pitch PAT blade carries about 2.53 cu yd (1.93 m3) capacity, with hydraulic lift, angle, and tilt control from an in-cab lever.
The D5C nameplate spans more than one distinct generation, so "PAT" alone does not pin down the machine. This early powershift, 3204-powered PAT chassis is a different machine from the later Series III D5C, which carried the D5C name forward on a larger 3046 six-cylinder engine and, on some units, a hydrostatic Hystat driveline, before Caterpillar retired the D5C line in favor of the D5G. Because PAT-style blades were used across more than one of these generations, always confirm engine and serial prefix off the machine's own data plate rather than assuming from the badge alone. In the used and parts market, this earlier powershift machine holds its own niche: it is a mechanically simple, pre-electronic dozer with no ECM or sensor network, straightforward to diagnose with basic gauges and hand tools, which keeps it attractive for owner-operators and small contractors doing finish grading, land clearing, and confined-site utility work where a full D6-class machine is unnecessary. Parts support benefits from shared driveline and undercarriage architecture with the D3C and D4C, though buyers should treat it as distinct from the later Series III or Hystat D5C when sourcing engine, transmission, or blade-circuit components.
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 D5C PAT specifications
Engine
| Engine model | Cat 3204, turbocharged 4-cylinder diesel; do not confuse with the later D5C Series II/III, which switched to a Cat 3046/3046T six-cylinder engine under the same D5C nameplate. |
| Displacement | 4.4 L (269 cu in) |
| Bore x stroke | 108 mm x 127 mm (4.25 in x 5.00 in) |
| Aspiration | Turbocharged |
| Rated power (net/flywheel) | Approx 90 hp (67 kW) |
| Emissions tier | Pre-emissions-era mechanically governed diesel (early-to-mid 1990s production); no EPA/EU Tier rating applies |
| Introduction era | PAT-blade D5C entered production around 1993 on the 3204 engine; not to be confused with the 1995-2001 Series II/III generation built on the 3046 engine |
Weights
| Operating weight | Approx 19,800 lb (8,981 kg) documented for a PAT-blade unit. Varies by attachments (ripper, winch, front counterweight) and is not the same figure as the later Series II/III D5C |
| Weight variance note | A PAT low-ground-pressure undercarriage variant (PATLGP) was also offered; its operating weight and flotation figures differ from the standard-gauge PAT and are not covered here |
Dimensions
| Overall length (with blade) | Approx 13 ft 4 in (4.06 m), reported for a documented PAT-equipped unit |
| Overall width | Approx 7 ft 10 in (2.39 m) |
| Overall height | Approx 9 ft (2.74 m) |
| Track shoe width (standard gauge) | Approx 18 in (460 mm) single-grouser shoe, per undercarriage parts fitment covering this model and its direct siblings |
| Track gauge, ground clearance | Not independently documented online for this exact blade/gauge configuration; confirm with your dealer or Cat SIS lookup |
Performance
| Transmission | 3-speed forward / 3-speed reverse (3F/3R) powershift, planetary gearset, with torque converter |
| Max forward travel speed | Approx 6 mph (9.7 km/h), commonly cited for the 3F/3R powershift D5C driveline |
| Reverse travel speed | Not separately published online for this configuration |
| Drawbar pull | Not documented in available public specification sources for this configuration; verify with your dealer or Cat SIS |
| Ground pressure | Not documented in available public specification sources for the standard-gauge PAT undercarriage. A PATLGP (low ground pressure) variant with a wider undercarriage was offered for reduced flotation pressure, but exact psi/kPa figures are not published online for either configuration |
| Gradeability | Not documented in available public specification sources |
Blades
| Blade type | PAT (Power Angle Tilt) factory blade group with adjustable/variable pitch, giving cutting-angle and tilt control from the operator's seat |
| Blade capacity | Approx 2.53 cu yd (1.93 m3), reported for the adjustable-pitch PAT blade on a documented unit |
| Blade control | Hydraulic hand controls through a multi-valve bank driving separate angle and tilt cylinder groups plus the main lift cylinders; valve-bank configuration varied by build. |
| Blade geometry (dig depth, lift height, max tilt, max angle) | Not separately published online for this exact engine/blade generation. Later Series III VPAT-blade literature covers its own 3046-engine generation and should not be applied to this PAT/3204-era machine |
Service capacities summary
| Fuel tank | Not independently documented online for this exact engine/blade configuration; check the machine's decoder plate, service manual, or your dealer's parts/service lookup for the exact capacity |
| Powershift transmission oil | Not independently documented online for this exact configuration; verify with your dealer or Cat SIS |
| Hydraulic system | Not independently documented online for this exact configuration; verify with your dealer or Cat SIS |
| Engine oil (Cat 3204) | Not independently documented online tied specifically to this machine; verify with your dealer or Cat SIS |
| Cooling system | Not independently documented online for this exact configuration; verify with your dealer or Cat SIS |
Values vary by configuration, region, and serial range — confirm against your machine before planning transport or lifts.
D5C PAT fluids & capacities
| System | Capacity | Recommended fluid |
|---|---|---|
| Engine crankcase (with filter) | About 12.1 L (12.8 qt / 3.3 US gal), the application figure for the turbocharged 3204 four-cylinder diesel fitted to the D5C PAT. Other 3204 sump configurations used on non-dozer applications run lower, near 9.5 L (2.5 US gal); always fill to the dipstick mark rather than by volume alone. | Cat Diesel Engine Oil (DEO), SAE 15W-40 for moderate-to-warm climates or SAE 10W-30 for a wider cold-to-warm operating range; API CD/CF/CG-4-class oils are acceptable alternates for this engine generation. |
| Cooling system | About 20.1 L (21.2 qt / 5.6 US gal) for the 3204 engine cooling circuit as installed in the D5C. | Cat heavy-duty diesel engine coolant/antifreeze with a corrosion inhibitor (a conventional SCA-treated coolant for a machine of this vintage, or Cat Extended Life Coolant where the system has been converted); hold the factory water-to-coolant ratio and inhibitor concentration shown in the cooling-system chart. |
| Fuel tank | About 166.5 L (44 US gal), the application figure tied to the D5C chassis. Some general D5-family write-ups quote a much larger tank (roughly 245 L / 65 gal), but that figure is not confirmed against the D5C PAT chassis and most likely belongs to a different D5 generation — treat 166.5 L as the number tied to this machine and verify against the sight gauge. | No. 2-D diesel fuel meeting Cat's fuel specification; use a winter-blend or treated fuel below freezing per the climate guidance in the OMM. |
| Transmission / power train (powershift transmission, plus bevel gear and steering clutch compartments) | About 28.4 L (30 qt / 7.5 US gal) total for the power train oil system feeding the 3-speed forward/reverse powershift transmission on the D5C PAT's differential-steer driveline. Whether the OMM shows this as one combined power-train fill or splits it between the transmission case and the rear bevel-gear/steering-clutch compartment was not confirmed in available references — check the dipstick and sight-gauge marks on the machine for the exact per-compartment split. | Cat Transmission/Drive Train Oil (TDTO) meeting the Cat TO-4 performance specification, typically SAE 30 in temperate service or a lower-viscosity TDTO grade for cold-climate starts. |
| Final drives (each side) | About 20.5 L (5.5 US gal) per side. This figure recurs in Cat parts and service references tied to the D5C final drive housing, but was not independently cross-verified against the PAT-specific OMM — treat as approximate and confirm against the fill/level plug, since final-drive housings can vary slightly across D5C build series. | Cat TDTO (Cat TO-4 spec) drive-train oil, matching the power train fluid. |
| Hydraulic system / tank | About 56.8 L (15 US gal). The D5C PAT uses an open-center hydraulic system rated near 172 bar (2500 psi) with pump flow around 55 L/min (14.5 gpm). | Cat TO-4-spec drive-train oil (TDTO) is typical for open-center dozer hydraulics of this class and era; confirm against the OMM fluid chart, since some references call instead for a dedicated Cat HYDO-spec hydraulic oil in the implement circuit. |
| Pivot shaft (equalizer bar) / track frame pivot | No fill capacity — this is a grease-lubricated pivot point, not an oil sump. No dipstick or drain-and-fill volume is documented for it in available references. | Cat Multipurpose Grease (NLGI 2) at the scheduled grease interval; shorten the interval in wet or abrasive, dusty ground conditions. |
| Grease points (track and blade pins, lift and tilt cylinder pins, steering linkage, general chassis) | Not applicable — serviced by grease gun at individual fittings rather than a bulk fill. | Cat Multipurpose Grease, NLGI 2, suited to roughly -30 to 40 degrees C (-22 to 104 degrees F) service without moly additive. For sustained service colder than about -20 degrees C (-4 degrees F), switch to a softer NLGI 0/1 arctic-grade grease. |
Capacities are refill values from factory literature — always fill to the dipstick/sight gauge, not the number.
Caterpillar D5C PAT 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 D5C PAT beyond the schedule
Predictive Maintenance & Fluid Analysis
Sample engine, power-train, and hydraulic tank oil on the D5C PAT's 3204 turbocharged four-cylinder and powershift driveline to trend wear metals before a torque-converter or final-drive failure shows up as a breakdown. Because the PAT blade adds weight up front, track idler block travel and forward bottom roller wear outpace a straight-blade machine, so measure and log undercarriage wear at every interval. Watch coolant corrosion-inhibitor depletion and PAT circuit pressure (spec near 17 MPa/2,500 psi) as an early indicator of cooling and hydraulic-circuit trouble.
Corrective & Common Repairs
Weak or one-sided steering on the mechanical powershift driveline usually traces to steering clutch release piston seals not fully releasing, worn clutch packs, or low system pressure, not a converter fault; run only TO-4-spec transmission oil in the wet clutches. PAT angle and tilt cylinder seals and hoses see frequent leakage from grading duty cycles and are the most commonly replaced wear item on the blade circuit. Overheating usually traces to a clogged radiator or oil-cooler core, a stuck thermostat, low coolant, or a loose fan belt.
Overhaul & Rebuild Points
Major overhaul decisions on the D5C PAT center on the 3204's top end (liners, pistons, injectors, turbocharger cartridge) once compression or oil consumption trends from sampling show wear, and on steering clutch pack and brake band condition once release pressure will not hold spec. Final drives are typically rebuilt on both sides once internal gear wear or seal failure is confirmed by oil analysis. Undercarriage rebuilds, turning or replacing sprockets, rollers, idlers, and chain, are the other major spend, accelerated by the added front-end load from the PAT blade group.
Seasonal & Environment Servicing
In cold climates, check block heater operation and coolant concentration before winter, and drain the fuel water separator more often as condensation increases; the mechanical inline injection pump and flyweight governor on the 3204 have no cold-start electronics to help. In dusty grading or land-clearing work typical of this small dozer's niche, shorten air filter and PAT cylinder pin grease intervals, and rinse packed material from the undercarriage and radiator guard screen so abrasive fines do not accelerate bushing and roller wear.
D5C PAT common service parts
| Part number | Part | Notes | |
|---|---|---|---|
| 101-7664 | Film | Lubrication service | Check fitment → |
| 123-4298 | Kit-Gasket | Lubrication service | Check fitment → |
Always confirm against your machine's serial number — cross-check any part in Heavy Parts AI before ordering.
D5C PAT fault codes & troubleshooting
| Code | Meaning | Likely cause | What to do |
|---|---|---|---|
| COOLANT TEMPERATURE gauge - red zone / high-temp warning lamp | Engine coolant temperature has risen into or past the gauge's red operating range. | Low coolant level, debris-blocked radiator core, loose or worn fan belt, a thermostat stuck closed, or sustained heavy pushing load in hot ambient conditions. | Reduce load and let the engine idle down before shutdown. Check coolant level cold, clean the radiator core and guard screen, check fan belt tension, and verify thermostat operation before returning to work. |
| ENGINE OIL PRESSURE gauge - low zone / low-pressure warning lamp | Engine lubrication oil pressure has dropped below the normal operating band shown on the gauge. | Low engine oil level, a plugged oil filter, a worn oil pump, worn main or rod bearings, or a faulty pressure sender/gauge. | Stop the engine immediately and do not restart. Check oil level and look for external leaks, inspect the filter, and have oil pressure checked with a mechanical test gauge before returning to service. |
| TORQUE CONVERTER OIL TEMPERATURE gauge - red zone | Oil temperature in the powershift transmission's torque converter has exceeded the safe operating range. | Low transmission/converter oil level, a plugged converter oil cooler, or prolonged stall-type operation (heavy dozing or pushing at low travel speed) that loads the converter without enough cooling airflow. | Ease off the load, shift to a lower gear or bring the machine to neutral to let the converter idle down and cool. Check oil level and inspect the converter oil cooler for restriction once cooled. |
| CHARGING SYSTEM warning lamp (alternator/battery symbol) | The alternator is not charging the battery circuit at the expected rate. | A slipping or broken alternator drive belt, a failed alternator, loose or corroded battery cable and charging wiring connections, or a faulty voltage regulator. | Check belt condition and tension first, then inspect battery terminals and charging wiring for corrosion or looseness. Load-test the alternator output if the lamp stays on after belt and wiring checks. |
| AIR CLEANER RESTRICTION indicator (precleaner/air filter service gauge) | Intake air restriction across the air cleaner element has reached the point where the element needs service. | A clogged primary air filter element, a plugged precleaner, or dusty/high-debris jobsite conditions loading the element faster than normal. | Service or replace the air filter element per the indicator, clean the precleaner, and reset the restriction indicator so it reads accurately going forward. |
Codes and remedies are general guidance for this model family — always confirm with diagnostic tooling and your dealer before major repairs.
D5C PAT attachments & work tools
Blades
D5C PAT came factory-equipped with the Power Angle Tilt (PAT) blade group, giving hydraulic lift, angle and tilt control from a single in-cab lever/joystick. Blade width runs roughly 2.5-2.7 m (8.3-8.8 ft) depending on S (straight), SU (semi-universal) or U/A (universal/angle) configuration: S gives best penetration in hard or rocky ground, SU balances capacity with cutting ability, and U/A carries the most material over distance. A VPAT (adds pitch/roll) option is documented on later Cat small-dozer generations, but no source ties VPAT specifically to the D5C PAT nameplate, so treat VPAT as unconfirmed for this variant.
Rippers
Rear ripper is a parallelogram (radial) linkage frame with hydraulic lift/tilt cylinders, mounted on the standard rear drawbar/ripper support, sharing a common design family with the D3C and D4C. Multi-shank frames can run fewer teeth, down to a single shank, for maximum penetration in hard, frozen or rocky ground and root work, while running more shanks gives shallower, wider ripping for general loosening. Ripper class and cylinder count are sized for the D3-D5 small-dozer range, lighter-duty than the multi-cylinder rippers fitted to D6-D8 class machines; weight figures vary by shank count and are not consistently documented for this exact model.
Winches
D5C PAT offered a factory rear winch mounting group sized for the D3-D5 small-dozer class. These are mechanical, transmission/PTO-driven drum (cable) winches typical of the era, not independent hydraulic winches like those fitted to larger D6-D8 dozers. Winch and mounting hardware are tied to specific serial-number ranges, so fitment should be confirmed against the machine's own serial prefix rather than assumed.
Drawbars/Counterweights
A rear-mounted drawbar is standard equipment, used both for towing and as the mounting point for the rear ripper support. A front counterweight group is available as an option to help balance the machine when running rear attachments such as a ripper or winch in severe applications, including slope work or heavy angle dozing. Factory documentation flags the counterweight option as incompatible with the front pull hook on certain serial-number ranges, so counterweight and front-hook/winch setups must be matched by serial number rather than mixed freely.
Cab/ROPS Guarding (Forestry/Waste)
Standard cab is an enclosed ROPS/FOPS structure, with air conditioning offered as an option; Caterpillar did not offer a dedicated factory forestry or waste-handler guarding package for the D5C PAT the way it later did for the D5M, D5G and D7E dozers. Forestry- or waste-site units are typically fitted with dealer- or aftermarket bolt-on mesh or perforated-steel rear screens plus separate front, door and side window guards, sized for the D3C/D4C/D5C cab family, rather than one certified factory kit. Undercarriage, radiator and fuel-tank screens for waste/landfill duty are likewise aftermarket additions on this model, not a factory option.
Hydraulic Arrangement (Front/Rear Tools)
The front PAT blade runs on its own hydraulic circuit with lift, angle and tilt functions combined into one in-cab lever/joystick, supporting full power-turn control while working. The rear ripper uses a separate lift/tilt hydraulic circuit routed to the rear-mounted ripper frame, typically through a single tilt cylinder for this dozer class. Where fitted, the rear winch is mechanically driven off the transmission/PTO rather than sharing the blade or ripper hydraulic circuits.
All D5C PAT assemblies by section
Every catalogued assembly group for the Caterpillar D5C PAT. Open an assembly to preview the parts inside — full OEM part numbers are available in Heavy Parts AI.
Air Inlet And Exhaust System
4p6162 Air Cleaner Gp
| 4P***62 | Air Cleaner Group | 1 |
4p6674 Air Cleaner Gp
| 4P***74 | Air Cleaner Group | 1 |
8n4780 Cartridge Gp-Turbocharger*R
| 8N***80 | Cartridge Group-Turbocharger | 1 |
7e0831 Extension Gp-Exhaust
| 7E***31 | Extension Group-Exhaust | 1 |
4p6662 Lines Gp-Air
| 4P***62 | Lines Group-Air | 1 |
4p6669 Lines Gp-Air
| 01***50 | Plug To Aftercooler Inlet Elbow | 1 |
| 4P***61 | Elbow-Exhaust | 1 |
| 4P***69 | Lines Group-Air | 1 |
4p9377 Lines Gp-Turbocharger Oil
| 4P***77 | Lines Group-Turbocharger Oil | 1 |
6n6085 Manifold Gp-Exhaust
| 6N***85 | Manifold Group-Exhaust; Exhaust Manifold Group | 1 |
4p6677 Muffler Gp
| 4P***77 | Muffler Group | 1 |
4m0310 Precleaner As
| 4M***10 | Precleaner As | 1 |
8n4774 Turbocharger Gp
| 8N***74 | Turbocharger Group | 1 |
6n5079 Turbocharger Gp
| 6N***79 | Turbocharger Group; Turbocharger Group | 1 |
Basic Engine
2w1337 Camshaft Gp-Single
| 2W***37 | Camshaft Group-Single; Single Camshaft Group | 1 |
4p6663 Cover Gp-Valve Mechanism
| 4P***63 | Cover Group-Valve Mechanism | 1 |
Crankshaft Bearing Replacement
| 8N***71 | .51 mm--Front Main--Non-Grooved | 3 |
| 8N***72 | .51 mm--Front Main--Non-Grooved | 3 |
| 8N***73 | 0 Standard--Front Main--Non-Grooved; 0 (Standard)-Front Main-Non-Grooved | 3 |
7c0688 Crankshaft Gp
| 7C***88 | Crankshaft Group; Crankshaft Group | 1 |
2w7902 Cylinder Block As
| 2W***02 | Cylinder Block As | 1 |
7n4821 Cylinder Block As
| 7N***21 | Cylinder Block As | 1 |
6n9049 Cylinder Block Gp
| 6N***49 | Cylinder Block Group; Cylinder Block Group | 1 |
9y6111 Cylinder Head As
| 9Y***11 | 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 |
7w9394 Cylinder Head Gp*R
| 7W***94 | Cylinder Head Group | 1 |
6n2397 Cylinder Head Gp*R
| 6N***97 | Cylinder Head Group; Cylinder Head Group | 1 |
4p6668 Drive Gp-Fan (Belt)
| 4P***68 | Drive Group-Fan | 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
| 1W***54 | Lifting Group | 1 |
6n8370 Pan Gp-Oil
| 6N***70 | Pan Group-Oil; Oil Pan Group | 1 |
2w1040 Piston & Rod Gp
| 2W***40 | Piston & Rod Group; Connecting Rod And Piston Group | 1 |
4p0533 Piston & Rod Gp-3 Ring
| 4P***33 | Piston & Rod Group | 1 |
2w4841 Piston Gp
| 2W***41 | Piston Group | 1 |
4p6666 Pulley Gp-Crankshaft
| 4P***66 | Pulley Group-Crankshaft | 1 |
4p6670 Support Gp-Engine & Transmission
| 4P***70 | Support Group-Engine & Tmsn | 1 |
1w5720 Valve Mechanism Gp
| 1W***20 | Valve Mechanism Group; Valve Mechanism 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 |
4p6675 Fan Gp-Blower
| 4P***75 | Fan Group-Blower | 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 |
4p6681 Radiator Gp
| 4P***81 | Radiator Group | 1 |
Electrical System
7n4784 Alternator Gp-Charging
| 7N***84 | Alternator Group-Charging | 1 |
1w4263 Alternator Gp-Charging
| 1W***63 | Alternator Group-Charging | 1 |
8n2822 Alternator Gp-Charging
| 6V***78 | Nut; (10-32-Thd) | 2 |
| 8F***34 | Lockwasher; (External Teeth) | 2 |
| 8N***68 | Alternator Group-Charging | 1 |
8n2268 Alternator Gp-Charging
| 8N***68 | Alternator Group-Charging | 1 |
8y5048 Battery & Wiring Gp-Part 1 Of 2
| 8Y***48 | Battery & Wiring Group | 1 |
8y5048 Battery & Wiring Gp-Part 2 Of 2
| 8Y***48 | Battery & Wiring Group | 1 |
6s3548 Battery Gp
| 6S***48 | Battery Group | 1 |
9x7779 Lamp Gp-Flood
| 9X***79 | Lamp Group-Flood; -Roading Lights | 1 |
9x9069 Lamp Gp-Flood
| 9X***69 | Lamp Group-Flood | 1 |
8y7145 Lighting Gp-3 Lamp
| 8Y***45 | Lighting Group-3 Lamp | 1 |
8y5067 Lighting Gp-3 Lamp
| 8Y***67 | Lighting Group-3 Lamp | 1 |
8y6562 Starting Aid Gp-Ether
| 8Y***62 | Starting Aid Group-Ether | 1 |
3e1865 Starting Motor Gp-Electric
| 3E***65 | Starting Motor Group-Electric | 1 |
4n0190 Starting Motor Gp-Electric
| 4N***90 | Starting Motor Group-Electric; Electric Starting Motor Group | 1 |
8y5059 Warning Gp-Back-Up
| 8Y***59 | Warning Group-Backup | 1 |
Engine Arrangement
4p6540 Engine Ar-Part 2 Of 2
| 12***62 | Single Cylinder Head | 0 |
| 1W***54 | Lines Group-Fuel Injection; Fuel Injection Lines Group | 1 |
| 1W***54 | Lifting Group | 1 |
4p6540 Engine Ar-Part 1 Of 2
| 1N***24 | Filter Group-Oil; Oil Filter Group | 1 |
| 1W***67 | Gauge Group-Oil Level (Dipstick) | 1 |
| 1W***55 | Gear Group-Front; Front Gear Group | 1 |
Final Drive
8y1792 Drive Gp-Power Take-Off
| 8Y***92 | Drive Group-Power Take-Off | 1 |
8y5628 Final Drive Gp
| 8Y***28 | Final Drive Group | 1 |
8y6530 Final Drive Gp
| 8Y***30 | Final Drive Group | 1 |
8y7132 Final Drive Gp
| 8Y***32 | Final Drive Group | 1 |
8y7056 Universal Joint Gp
| 8Y***56 | Universal Joint Group | 1 |
Frame And Body
8y6570 Guard Gp-Brush
| 8Y***70 | Guard Group-Brush; Guard Gp-Brush | 1 |
5g2342 Guard Gp-Brush
| 5G***42 | Guard Group-Brush | 1 |
5g2327 Guard Gp-Brush
| 5G***27 | Guard Group-Brush | 1 |
8y7095 Counterweight Gp-Front
| 8Y***95 | Counterweight Group-Front | 1 |
5g0779 Drawbar Gp
| 5G***79 | Drawbar Group; (Fixed) | 1 |
8y5639 Firewall Gp
| 8Y***39 | Firewall Group | 1 |
8y5643 Firewall Gp
| 8Y***43 | Firewall Group | 1 |
8y1794 Frame Gp
| 8Y***94 | Frame Group | 1 |
8y1795 Guard Gp-Bottom
| 8Y***95 | Guard Group-Bottom | 1 |
8y6576 Guard Gp-Bottom
| 8Y***76 | Guard Group-Bottom | 1 |
8y1796 Guard Gp-Radiator
| 8Y***96 | Guard Group-Radiator | 1 |
8y7157 Guard Gp-Radiator
| 8Y***57 | Guard Group-Radiator | 1 |
8y1797 Hood & Guard Gp
| 8Y***97 | Hood & Guard Group | 1 |
8y7524 Sweep Ar
| 8Y***37 | Sweep Group | 1 |
| 8Y***57 | Guard Group-Radiator | 1 |
| 8Y***24 | Sweep Ar | 1 |
8y5637 Sweep Gp
| 8Y***37 | Sweep Group | 1 |
1531298 Track Gp
| 15***73 | Link As-Track | 1 |
| 15***98 | Track Group | 1 |
| 1M***08 | Nut-Track | 144 |
Fuel System
5g3612 Cap Gp-Protection
| 5G***12 | Cap Group-Protection; Fuel Filler Protection Cap Group | 1 |
8y5321 Control Gp-Decelerator
| 8Y***21 | Control Group-Decelerator | 1 |
8y5034 Control Gp-Governor
| 8Y***34 | Control Group-Governor | 1 |
4p9379 Filter Gp-Fuel
| 4P***79 | Filter Group-Fuel | 1 |
1w8730 Governor Gp
| 1W***30 | Governor Group | 1 |
8y1798 Lines Gp-Fuel
| 8Y***98 | 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 |
4w0469 Pump Gp-Fuel Injection
| 4W***69 | Pump Group-Fuel Injection | 1 |
1w6539 Pump Gp-Fuel Injection
| 1W***39 | Pump Group-Fuel Injection | 1 |
2w4403 Pump Gp-Fuel Transfer
| 2W***03 | Pump Group-Fuel Transfer; Fuel Transfer Pump Group | 1 |
1w0568 Pump Gp-Fuel Transfer
| 1W***68 | Pump Group-Fuel Transfer | 1 |
2w6309 Pump Gp-Fuel Transfer
| 2W***09 | Pump Group-Fuel Transfer | 1 |
1006406 Pump Gp-Fuel Transfer
| 10***06 | Pump Group-Fuel Transfer | 1 |
4p6928 Governor & Fuel Injection Pump Gp
| 4P***28 | Pump Group-Gov & Fuel Inj | 1 |
8y1791 Tank Gp-Fuel
| 8Y***91 | Tank Group-Fuel | 1 |
4w5063 Torque Control Gp
| 4W***63 | Torque Control Group | 1 |
Hydraulic System
9j8698 Cylinder Gp-Angling-2 Required (Chgs 01-04)
| 9J***98 | Angling Cylinder Group; Angling Cylinder Group | 1 |
8y4983 Control Gp-Hydraulic Hand
| 8Y***83 | Control Group-Hydraulic Hand | 1 |
8y5053 Control Gp-Hydraulic Hand
| 8Y***53 | Control Group-Hydraulic Hand | 1 |
8y0639 Control Gp-Hydraulic Hand
| 8Y***39 | Control Group-Hydraulic Hand; Control Gp-Hydraulic Hand | 1 |
8y7111 Control Gp-Hydraulic Hand
| 8Y***11 | Control Group-Hydraulic Hand | 1 |
8y4984 Control Gp-Hydraulic Hand
| 8Y***84 | Control Group-Hydraulic Hand | 1 |
7j9223 Cylinder Gp-Lift-2 Required (Chgs 01-09)
| 7J***23 | Lift Cylinder Group | 1 |
8y0246 Lines Gp-Rear
| 8Y***46 | Lines Group-Rear Attachment; Lines Gp-Rear Attachment | 1 |
8e4276 Mounting Gp-Cylinder Lines
| 8E***76 | Mounting Group-Cylinder Lines; Mounting Gp-Cylinder Lines | 1 |
9j8674 Cylinder Gp-Tilt (Chgs 00-04)
| 9J***74 | Tilt Cylinder Group; Tilt Cylinder Group | 1 |
9t7250 Valve Gp-Bank
| 9T***50 | Valve Group-Bank; Valve Gp-Bank | 1 |
9t7249 Valve Gp-Bank
| 9T***49 | Valve Group-Bank | 1 |
9t7641 Valve Gp-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 08)
| 7J***20 | Cylinder Group-Ripper | 1 |
8y5068 Hydraulic Ar-3 Valve
| 8Y***83 | Control Group-Hydraulic Hand | 1 |
| 8Y***84 | Control Group-Hydraulic Hand | 1 |
| 8Y***68 | Hydraulic Ar | 1 |
8y5065 Hydraulic Ar-4 Valve
| 8Y***46 | Lines Group-Rear Attachment; Lines Gp-Rear Attachment | 1 |
| 8Y***39 | Control Group-Hydraulic Hand; Control Gp-Hydraulic Hand | 1 |
| 8Y***83 | Control Group-Hydraulic Hand | 1 |
8y7126 Hydraulic Ar-4 Valve
| 8Y***46 | Lines Group-Rear Attachment; Lines Gp-Rear Attachment | 1 |
| 8Y***11 | Control Group-Hydraulic Hand | 1 |
| 8Y***26 | Hydraulic Ar | 1 |
8e9154 Lines Gp-Angle & Tilt
| 8E***54 | Lines Group-Angle & Tilt | 1 |
8e7558 Lines Gp-Angle & Tilt
| 8E***58 | Lines Group-Angle & Tilt | 1 |
8y5054 Lines Gp-Hydraulic
| 8Y***54 | Lines Group-Hydraulic | 1 |
8y5634 Lines Gp-Pump
| 8Y***34 | Lines Group-Pump | 1 |
1015696 Lines Gp-Pump
| 10***96 | Lines Group-Pump | 1 |
6s3559 Lines Gp-Ripper
| 6S***59 | Lines Group-Ripper; Ripper Lines Group | 1 |
6y2111 Lines Gp-Winch
| 6Y***11 | Lines Group-Winch | 1 |
3g5385 Pump Gp-Gear
| 3G***85 | Pump Group-Gear | 1 |
8j4513 Pump Gp-Gear
| 8J***13 | Pump Group-Gear | 1 |
8j4512 Pump Gp-Gear
| 8J***12 | Pump Group-Gear; Gear Pump Group-Single Section | 1 |
8y5069 Tank & Filter Gp-Hydraulic
| 8Y***69 | Tank & Filter Group | 1 |
8y5318 Tank Gp-Hydraulic
| 8Y***18 | Tank Group-Hydraulic | 1 |
8y5055 Valve & Mounting Gp
| 8Y***55 | Valve & Mounting Group | 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
8y2451 Lines & Pump Gp
| 8Y***51 | Pump & Lines Group | 1 |
3g5046 Pump Gp-Gear
| 3G***46 | Pump Group-Gear | 1 |
6e1413 Pump Gp-Gear
| 6E***13 | Pump Group-Gear | 1 |
5g0269 Mounting Gp-Trunnion
| 5G***69 | Trunnion Mounting Group; Trunnion Mounting Group | 1 |
6y5836 Bit & Cutting Edge Gp
| 6Y***36 | Bit & Cutting Edge Group | 1 |
8e7088 Bit & Cutting Edge Gp
| 8E***88 | Bit & Cutting Edge Group | 1 |
8e7322 Blade Gp
| 8E***22 | Blade Group | 1 |
1061062 Blade Gp
| 10***62 | Blade Group | 1 |
1068465 Blade Gp-Angling
| 10***65 | Blade Group-Angling | 1 |
8e9145 Blade Gp-Angling
| 8E***45 | Blade Group-Angling | 1 |
1068462 Bulldozer Ar
| 10***62 | Bulldozer Ar | 1 |
| 10***65 | Blade Group-Angling | 1 |
| 10***68 | C-Frame Group-Power Angling | 1 |
1068463 Bulldozer Ar
| 10***63 | Bulldozer Ar | 1 |
| 10***65 | Blade Group-Angling | 1 |
| 10***68 | C-Frame Group-Power Angling | 1 |
1061065 Bulldozer Ar
| 10***62 | Blade Group | 1 |
| 10***64 | C-Frame Group-Power Angling | 1 |
| 10***65 | Bulldozer Ar | 1 |
1061066 Bulldozer Ar
| 10***62 | Blade Group | 1 |
| 10***64 | C-Frame Group-Power Angling | 1 |
| 10***66 | Bulldozer Ar | 1 |
8e9126 Bulldozer Ar
| 7B***28 | Drive Screws-2 Required For Installing | 2 |
| 8E***26 | Bulldozer Ar-Angling | 1 |
| 8E***28 | C-Frame Group | 1 |
8e9127 Bulldozer Ar
| 5G***69 | Trunnion Mounting Group; Trunnion Mounting Group | 1 |
| 7B***28 | Drive Screws-2 Required For Installing | 2 |
| 7J***23 | Lift Cylinder Group | 2 |
8e7303 Bulldozer Ar
| 5G***69 | Trunnion Mounting Group; Trunnion Mounting Group | 1 |
| 7B***28 | Drive Screws-2 Required For Installing | 2 |
| 7J***23 | Lift Cylinder Group | 2 |
8e7304 Bulldozer Ar
| 7B***28 | Drive Screws-2 Required For Installing | 2 |
| 8E***04 | Bulldozer Ar-Pwr Angle & Tilt | 1 |
| 8E***05 | C-Frame Group | 1 |
8e7305 C-Frame Gp
| 8E***05 | C-Frame Group | 1 |
8e9128 C-Frame Gp
| 8E***28 | C-Frame Group | 1 |
1061064 C-Frame Gp-Power Angling
| 10***64 | C-Frame Group-Power Angling | 1 |
1068468 C-Frame Gp-Power Angling
| 10***68 | C-Frame Group-Power Angling | 1 |
6y1467 Case & Covers Gp
| 6Y***67 | Case & Covers Group-Winch | 1 |
6y1906 Gear & Clutch Gp-Part 1 Of 1
| 6Y***06 | Clutch & Gear Group | 1 |
6y2048 Control Gp-Winch
| 6Y***48 | Control Group-Winch | 1 |
6y2216 Control Gp-Winch
| 6Y***16 | Control Group-Winch | 1 |
5g2636 Control Gp-Towing Winch
| 5G***36 | Control Group-Winch; Control Gp-Towing Winch | 1 |
5g3938 Control Gp-Towing Winch
| 5G***38 | Control Group-Winch; Control Gp-Towing Winch | 1 |
5g4331 Control Gp-Towing Winch
| 5G***31 | Control Group-Winch; Control Gp-Towing Winch | 1 |
6y2176 Conversion Ar-Winch
| 0S***19 | Bolt,Machine Gear Retaining Part Of Kit P/N 1w***46 | 5 |
| 1A***83 | Bolt (4.75" Long-Location "B") | 2 |
| 3T***80 | Cover As | 1 |
6y2175 Conversion Ar-Winch
| 0S***19 | Bolt,Machine Gear Retaining Part Of Kit P/N 1w***46 | 5 |
| 3T***80 | Cover As | 1 |
| 5G***38 | Control Group-Winch; Control Gp-Towing Winch | 1 |
6y1959 Conversion Gp-Winch
| 6Y***59 | Conversion Group-Winch | 1 |
6y2217 Conversion Gp-Winch
| 6Y***17 | Conversion Group-Winch | 1 |
7g9447 Covers Gp-Shipping
| 2M***80 | Seal--To Connector Pump Outlet | 1 |
| 3T***85 | Cover-Shipping; Shipping Cover | 1 |
| 7G***47 | Cover Group-Shipping; Shipping Cover Group | 1 |
8y5654 Drive Ar-Winch
| 8Y***92 | Drive Group-Power Take-Off | 1 |
| 8Y***51 | Pump & Lines Group | 1 |
| 8Y***54 | Drive Ar-Winch | 1 |
7g9470 Drive Gp-Winch
| 7G***70 | Drive Group-Winch | 1 |
7g6800 Manifold Gp
| 7G***00 | Manifold Group | 1 |
6t2288 Manifold Gp
| 6T***88 | Manifold Group | 1 |
8j3294 Mounting Gp-Ripper
| 8J***94 | Mounting Group-Ripper; Ripper Mounting Group | 1 |
7g9423 Mounting Gp-Winch
| 7G***23 | Mounting Group-Winch | 1 |
8y5642 Pump & Lines Gp
| 8Y***42 | Pump & Lines Group | 1 |
1015692 Pump & Lines Gp
| 10***92 | Pump & Lines Group | 1 |
9j9005 Ripper Ar
| 6S***59 | Lines Group-Ripper; Ripper Lines Group | 1 |
| 7B***28 | Drive Screws-2 Required For Installing | 2 |
| 7J***20 | Cylinder Group-Ripper | 1 |
8j3334 Ripper Gp
| 8J***34 | Ripper Group; Ripper Group | 1 |
8j5313 Tooth Gp
| 8J***13 | Tooth Group | 1 |
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 |
8e5585 Winch Ar
| 10***92 | Pump & Lines Group | 1 |
| 5G***36 | Control Group-Winch; Control Gp-Towing Winch | 1 |
| 6Y***55 | Winch Ar-Towing | 1 |
8e5586 Winch Ar
| 10***92 | Pump & Lines Group | 1 |
| 5G***31 | Control Group-Winch; Control Gp-Towing Winch | 1 |
| 6Y***55 | Winch Ar-Towing | 1 |
6y2055 Winch Ar-Towing
| 4B***58 | Screw (Identification Plate) Mounting | 4 |
| 6V***27 | Plate, Serial Number; On Left Hand Side Of Winch | 1 |
| 6V***06 | Film (Instruction) | 1 |
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 |
4p9378 Fumes Disposal Gp
| 4P***78 | Fumes Disposal Group | 1 |
6i2826 Gauge Gp-Oil Level (Dipstick)
| 6I***26 | Gauge Group-Oil Level (Dipstick) | 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-Without Housing
| 2W***97 | Pump Group-Oil-Without Housing | 1 |
Operator Station
8y1147 Rops Ar-Open
| 5G***21 | Mounting Group-Rops | 1 |
| 5G***73 | Rops Group | 1 |
| 8Y***47 | Rops Ar-Open | 1 |
8y4741 Cab Gp-Part 2 Of 4
| 8Y***41 | Cab Group | 1 |
8y4741 Cab Gp-Part 4 Of 4
| 8Y***41 | Cab Group | 1 |
8y4741 Cab Gp-Part 1 Of 4
| 8Y***41 | Cab Group | 1 |
8y4741 Cab Gp-Part 3 Of 4
| 8Y***41 | Cab Group | 1 |
8y5325 Dash Gp
| 8Y***25 | Dash Group | 1 |
8y5036 Dash Gp
| 8Y***36 | Dash Group | 1 |
5g0190 Door Gp-Lh-Part 1 Of 2
| 5G***90 | Door Group-Lh | 1 |
5g0190 Door Gp-Lh-Part 2 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 |
9x5715 Gauge Gp-Cluster
| 9X***15 | Gauge Group-Cluster | 1 |
8y5653 Guard Gp-Vandalism
| 8Y***53 | Guard Group-Vandalism | 1 |
8y5633 Guard Gp-Vandalism
| 8Y***33 | Guard Group-Vandalism | 1 |
5g0537 Heater Gp-Cab
| 5G***37 | Heater Group-Cab; Cab Heater Group | 1 |
8y1562 Horn Gp-Electric
| 8Y***62 | Horn Group-Electric | 1 |
8y5037 Instrument Gp
| 8Y***37 | Instrument Group | 1 |
8y5337 Instrument Gp
| 8Y***37 | Instrument Group | 1 |
9w1490 Kit-Meter Service
| 8T***01 | Film; (Service Meter) | 1 |
| 9W***90 | Kit-Service Meter | 1 |
9g6762 Meter-Service
| 9G***62 | Meter-Service | 1 |
| 9W***90 | Kit-Service Meter | 1 |
8y5315 Mounting Gp-Cab
| 2N***79 | Machine Screw--Wire Assembly To Panel | 4 |
| 3D***43 | Hinge-Butt | 2 |
| 4B***81 | Screw-Machine | 4 |
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 3 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 1 Of 3
| 5G***55 | Pressurizer Group-Cab | 1 |
8y5238 Rollover Ar-Enclosed
| 5G***49 | Washer Group-Windshield; Windshield Washer Group | 1 |
| 5G***57 | Wiring Group-Cab; Cab Wiring Group | 1 |
| 5G***37 | Heater Group-Cab; Cab Heater Group | 1 |
8y7509 Rollover Ar
| 5G***49 | Washer Group-Windshield; Windshield Washer Group | 1 |
| 5G***57 | Wiring Group-Cab; Cab Wiring Group | 1 |
| 5G***37 | Heater Group-Cab; Cab Heater Group | 1 |
5g0673 Rops Gp
| 5G***73 | Rops Group | 1 |
8y1177 Seat & Support Gp
| 8Y***77 | Seat & Support Group | 1 |
8y5043 Seat & Support Gp
| 8Y***43 | Seat & Support Group | 1 |
8y4029 Seat Belt Gp
| 8Y***29 | Seat Belt Group | 1 |
8y6713 Seat Gp-Vinyl
| 8Y***13 | Seat 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 |
8y5481 Seat Gp
| 8Y***81 | Seat Group | 1 |
8y5480 Seat Gp-Adjustable
| 8Y***80 | Seat Group-Adjustable | 1 |
8y6714 Seat Gp-Suspension
| 8Y***14 | Seat Group-Suspension | 1 |
2v7961 Suspension As-Seat
| 2V***61 | Suspension As-Seat | 1 |
9c7161 Suspension Gp-Seat-Part 1 Of 2
| 9C***61 | Suspension Group-Seat | 1 |
9c7161 Suspension Gp-Seat-Part 2 Of 2
| 9C***61 | Suspension Group-Seat | 1 |
8y5482 Suspension Gp-Seat
| 8Y***82 | Suspension Group-Seat | 1 |
9g7641 Switch Gp-Start
| 9G***41 | Switch Group-Start; -Engine, Key-Vims Service | 1 |
5g0049 Washer Gp-Windshield
| 5G***49 | Washer Group-Windshield; Windshield Washer Group | 1 |
5g0974 Wiper Gp
| 5G***74 | Wiper Group; Wiper Group | 1 |
5g0457 Wiring Gp-Cab
| 5G***57 | Wiring Group-Cab; Cab Wiring Group | 1 |
Service Equipment And Supplies
Name Plates & Films-Part 2 Of 2
| 10***64 | Film; (Identification) (Engine Oil Filter) | 1 |
| 1P***07 | Film-Symbol; 2 On Bottom Of Upper Frame Below Engine. 2 On Front Of Upper Frame Above Boom Articulation | 4 |
| 3E***12 | Film-D5c | 2 |
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 |
Steering And Braking System
8y7089 Brake Gp-Steering-Hand-Part 3 Of 4
| 8Y***89 | Brake Group-Steering | 1 |
8y7089 Brake Gp-Steering-Hand-Part 4 Of 4
| 8Y***89 | Brake Group-Steering | 1 |
8y7089 Brake Gp-Steering-Part 1 Of 4
| 8Y***89 | Brake Group-Steering | 1 |
8y7089 Brake Gp-Steering-Part 3 Of 4
| 8Y***89 | Brake Group-Steering | 1 |
8y7089 Brake Gp-Steering-Part 4 Of 4
| 8Y***89 | Brake Group-Steering | 1 |
8y7058 Brake Gp-Steering-Part 1 Of 3
| 8Y***58 | Brake Group-Steering | 1 |
8y7089 Brake Gp-Steering-Hand-Part 2 Of 4
| 8Y***89 | Brake Group-Steering | 1 |
8y7089 Brake Gp-Steering-Part 2 Of 4
| 8Y***89 | Brake Group-Steering | 1 |
8y7058 Brake Gp-Steering-Part 2 Of 3
| 8Y***58 | Brake Group-Steering | 1 |
8y7058 Brake Gp-Steering-Part 3 Of 3
| 8Y***58 | Brake Group-Steering | 1 |
8y7089 Brake Gp-Steering-Hand-Part 1 Of 4
| 8Y***89 | Brake Group-Steering | 1 |
8y5320 Case Gp-Steering Clutch
| 8Y***20 | Case Group-Steering Clutch | 1 |
8y7019 Clutch Gp-Steering
| 8Y***19 | Clutch Group-Steering | 1 |
8y5295 Control Gp-Steering
| 8Y***95 | Control Group-Steering | 1 |
8y5641 Lines Gp-Steering
| 8Y***41 | Lines Group-Steering | 1 |
8y5640 Steering Ar
| 8Y***25 | Dash Group | 1 |
| 8Y***37 | Instrument Group | 1 |
| 8Y***33 | Guard Group-Vandalism | 1 |
8y6737 Valve Gp-Control
| 8Y***37 | Valve Group-Control | 1 |
8y6733 Valve Gp-Control
| 8Y***33 | Valve Group-Control | 1 |
8y6734 Valve Gp-Control
| 8Y***34 | Valve Group-Control | 1 |
8y6735 Valve Gp-Control
| 8Y***35 | Valve Group-Control | 1 |
Torque Converter
8y5632 Lines Gp-Torque Converter Cooler
| 8Y***32 | Lines Group-Torque Conv Cooler | 1 |
1t1929 Torque Converter Gp
| 1T***29 | Torque Converter Group | 1 |
Transmission
8e7614 Case & Parts Gp-Part 2 Of 2
| 8E***14 | Case & Parts Group-Planetary | 1 |
8e7614 Case & Parts Gp-Part 1 Of 2
| 8E***14 | Case & Parts Group-Planetary | 1 |
8y5052 Control Gp-Transmission
| 8Y***52 | Control Group-Transmission | 1 |
8e7734 Control Gp-Transmission Hydraulic
| 8E***34 | Control Group-Transmission Hydraulic | 1 |
9p7244 Covers Gp-Shipping
| 9P***44 | Cover Group-Shipping; (Storage) | 1 |
9p4540 Drive Gp-Pump
| 9P***40 | Drive Group-Pump | 1 |
8y5629 Filler Gp-Power Train Oil
| 8Y***29 | Filler Group-Power Train Oil | 1 |
9p6277 Filter Gp-Transmission
| 9P***77 | Filter Group-Transmission; -Transmission | 1 |
8e7615 Transfer Case & Gear Gp
| 8E***15 | Gear & Case Group-Transfer | 1 |
8y5630 Gear Gp-Bevel
| 8Y***30 | Gear Group-Bevel | 1 |
8y7508 Lines Gp-Power Train Oil
| 8Y***08 | Lines Group-Power Train Oil | 1 |
8y5631 Lines Gp-Power Train Oil
| 8Y***31 | Lines Group-Power Train Oil | 1 |
8e7593 Planetary Gp-Part 1 Of 1
| 8E***93 | Planetary Group | 1 |
8e7652 Pump Gp
| 8E***52 | Pump Group | 1 |
8e7651 Pump Gp-Gear
| 8E***51 | Pump Group-Gear | 1 |
1494234 Segment Gp-Sprocket
| 14***34 | Segment Group-Sprocket; -Sprocket | 1 |
8y6575 Shaft Gp-Drive
| 8Y***75 | Shaft Group-Drive | 1 |
8e7594 Transmission Ar
| 12***98 | Kit-Gasket; (Transmission Oil Filter) | 0 |
| 12***00 | Kit-Gasket; (Output Transfer Gear) | 0 |
| 12***01 | Kit-Gasket; (Hydraulic Control) | 0 |
8e7733 Valve Gp
| 8E***33 | Valve Group | 1 |
8e7735 Valve Gp-Selector & Pressure Control
| 8E***35 | Valve Group-Selector & Press Cont | 1 |
Undercarriage
7g4831 Cap Gp-Track Roller-24 Required
| 7G***31 | Cap Group-Track Roller | 1 |
8y1799 Frame Gp-Track Roller
| 8Y***99 | Frame Group-Track Roller | 1 |
8y7165 Guard Gp-Recoil Mechanism
| 8Y***65 | Guard Group-Recoil Mechanism | 1 |
8y7939 Guard Gp-Recoil
| 8Y***39 | Guard Group-Recoil Mechanism | 1 |
1043626 Guard Gp-Rock
| 10***26 | Guard Group-Rock | 1 |
8y8918 Guard Gp-Track Roller
| 8Y***18 | Guard Group-Track Roller | 1 |
8y5636 Guard Gp-Track Roller
| 8Y***36 | Guard Group-Track Roller | 1 |
8y5049 Idler Gp-Front
| 8Y***49 | Idler Group-Front | 1 |
1v6817 Link As-Track
| 1V***17 | Link As-Track | 1 |
6i9527 Link As-Track-Sealed & Lubricated
| 6I***27 | Link As-Track | 1 |
6k9880 Roller Gp-Track Carrier-2 Required
| 6K***80 | Roller Group-Track Carrier; (Upper) | 1 |
1248240 Roller Gp-Track-Double Flange
| 12***40 | Roller Group-Track-Double Flange | 1 |
1248237 Roller Gp-Track-Single Flange
| 12***37 | Roller Group-Track-Single Flange | 1 |
8e7298 Sprocket Gp-2 Required
| 8E***98 | Sprocket Group | 1 |
8y6529 Support Gp-Undercarriage
| 8Y***29 | Support Group-Undercarriage | 1 |
8y7137 Support Gp-Undercarriage
| 8Y***37 | Support Group-Undercarriage | 1 |
8y5079 Support Gp-Undercarriage
| 8Y***79 | Support Group-Undercarriage | 1 |
8e7529 Track Gp-2 Required
| 1M***08 | Nut-Track | 144 |
| 1V***17 | Link As-Track | 1 |
| 2V***19 | Shoe-Track | 36 |
6i9571 Track Gp
| 1M***08 | Nut-Track | 144 |
| 2P***63 | Lubricant | 1 |
| 3T***01 | Bolt-Track Master; (5/8-18x2.63-In) | 2 |
6i9570 Track Gp-510 Mm (20 In) Grouser Shoe-2 Required
| 1M***08 | Nut-Track | 144 |
| 3T***01 | Bolt-Track Master; (5/8-18x2.63-In) | 2 |
| 6I***27 | Link As-Track | 1 |
8e7515 Track Gp-2 Required
| 1M***08 | Nut-Track | 144 |
| 1V***17 | Link As-Track | 1 |
| 3P***74 | Bolt-Track Master | 4 |
1531300 Track Gp
| 15***73 | Link As-Track | 1 |
| 15***00 | Track Group | 1 |
| 1M***08 | Nut-Track | 144 |
6i9568 Track Gp-660 Mm (26 In) Grouser Shoe-2 Required
| 1M***08 | Nut-Track | 144 |
| 3T***01 | Bolt-Track Master; (5/8-18x2.63-In) | 2 |
| 6I***27 | Link As-Track | 1 |
8e7499 Track Gp-2 Required
| 1M***08 | Nut-Track | 144 |
| 1V***17 | Link As-Track | 1 |
| 3P***74 | Bolt-Track Master | 4 |
8e7500 Track Gp-2 Required
| 1M***08 | Nut-Track | 144 |
| 1V***15 | Shoe-Grouser Track | 36 |
| 1V***16 | Shoe-Grouser Track | 1 |
6i9569 Track Gp-460 Mm (18 In) Grouser Shoe-2 Required
| 1M***08 | Nut-Track | 144 |
| 3T***60 | Shoe-Track | 37 |
| 3T***01 | Bolt-Track Master; (5/8-18x2.63-In) | 2 |
8e7501 Track Gp-2 Required
| 1M***08 | Nut-Track | 144 |
| 1V***22 | Shoe-Grouser Track | 36 |
| 1V***23 | Shoe-Track (Master) | 1 |
6i9572 Track Gp
| 1M***08 | Nut-Track | 144 |
| 2P***63 | Lubricant | 1 |
| 3T***01 | Bolt-Track Master; (5/8-18x2.63-In) | 2 |
7g4837 Track Roller Gp-Double Flange
| 7G***37 | Track Roller Group-Double Flange | 1 |
7g4836 Track Roller Gp-Single Flange
| 7G***36 | Track Roller Group-Single Flange | 1 |
D5C PAT serial number reference
The PIN/serial plate is a riveted metal tag on the mainframe near the front of the tractor; side placement (left or right) is not consistent across sources for this era, so check both. Machines of this age often also carry the serial stamped directly into the frame rail as a backup if the plate is lost or painted over. Read the first three characters as the model/production-run prefix, which ties the machine to its parts book and configuration family, and the digits that follow as the sequential unit number within that run. This is a pre-2001 Cat machine, so expect the short 8-character format (3-letter prefix plus 5-digit unit number) rather than the later 17-character PIN.
| Prefix | Identifies | Notes |
|---|---|---|
| 3MK | D5C PAT / D5C PATLGP - Powershift generation | Powershift transmission with torque converter, Cat 3204 turbocharged 4-cylinder diesel. Same production run/parts book also covers plain D5C and D5C LGP; PAT identifies the factory power-angle-tilt blade group fitted to this chassis. Early year for this run, dated to around 1991. |
| 6PJ | D5C PAT / D5C PATLGP - Powershift generation | Same generation as 3MK: powershift transmission with torque converter, Cat 3204 engine. Production reported running into 1993. Same parts book also covers plain D5C and D5C LGP. |
Frequently asked questions
What engine does the Caterpillar D5C PAT use?
The D5C PAT covered here runs the Cat 3204, a turbocharged 4-cylinder diesel of about 4.4 L (269 cu in) displacement, rated near 90 hp (67 kW) net, paired with a 3-speed forward/reverse powershift transmission and torque converter. PAT is a blade-group designation, not an engine marker; a later Series III D5C carried a similar PAT-style blade concept on a different six-cylinder 3046 engine, so always confirm the engine off the machine's own data plate rather than the badge alone.
What is the operating weight of a Caterpillar D5C PAT?
A standard-gauge PAT-blade D5C runs about 19,800 lb (8,981 kg) operating weight. Weight varies with attachments such as a rear ripper, winch, or front counterweight, and the low-ground-pressure PATLGP undercarriage variant carries different weight and flotation figures than the standard-gauge PAT machine.
What replaced the Caterpillar D5C PAT?
Caterpillar carried the D5C nameplate forward into a Series III generation built on the larger 3046 six-cylinder engine, with a hydrostatic Hystat drivetrain offered on some units, before retiring the D5C line in favor of the D5G. No source ties a direct one-for-one successor specifically to this early PAT/3204 powershift configuration beyond that broader nameplate transition, so treat the Series III/D5G shift as the general replacement path rather than a documented direct swap.
What D5C PAT owners discuss
What engine does a D5C PAT actually have, and does it change by series?
PAT (Power Angle Tilt) is a blade group option, not a drivetrain marker, so the engine depends on which D5C generation the machine was built as. Early-to-mid production PAT dozers use the 3204, a 4-cylinder diesel offered in naturally aspirated and turbocharged tunes. Later Series III PAT/XL III machines switched to the 3046, a 6-cylinder diesel related to the block used in some Mitsubishi engines of that era. Net flywheel output across the line runs roughly in the 80-100 hp (60-75 kW) class depending on the specific rating. Owners report the naturally aspirated 3204 has a strong reliability reputation; the higher-output turbocharged 3204 has more history of rod/bearing trouble under hard use. Confirm the engine off the machine's own data plate rather than assuming from the PAT badge alone.
What's normal for the powershift transmission and steering clutch behavior on a mechanical D5C PAT?
Non-Hystat PAT dozers run a mechanical powershift transmission with pedal-operated steering clutches and brakes, no electronic controls, serviceable with ordinary hand tools. A recurring complaint is weak steering to one side: the machine turns slowly or barely turns at all in second or third gear. Owners and techs usually trace this to steering clutch release piston seals not fully releasing, worn clutch packs, or low system pressure rather than a converter or engine fault. Run only a transmission fluid meeting the TO-4 specification; ordinary engine oil lacks the friction-modifier additives the wet clutches need. Because steering clutches and brakes are safety-critical for turning and stopping the machine, have your dealer verify clutch release pressure and brake adjustment against factory spec before returning it to work.
Are there known hydraulic quirks with the PAT (Power Angle Tilt) blade circuit?
Angle and tilt cylinder seals and hoses see frequent leakage from grading duty cycles; it is the most commonly replaced wear item on the PAT circuit. A blade that will not hold angle position even after new seals and a new valve section usually points to circuit pressure below spec (factory pressure on this circuit runs around 17 MPa / 2,500 psi) rather than a bad cylinder. Hose routing matters too: missing or worn hose guards let the PAT cylinder lines chafe against the blade frame and fail early.
What undercarriage wear pattern should I expect on a PAT-equipped D5C?
The added weight of the PAT blade group up front loads the front idler and forward bottom rollers more than a straight-blade machine carries, so check idler block travel and forward bushing wear first. Techs commonly gauge remaining track life by pinning the sprocket, backing up to take the slack out, then measuring center-to-center over several links and comparing that to a new-track baseline, a quick way to estimate percent worn without pulling the chain apart. Keep track tension in spec: too tight accelerates pin and bushing wear, too loose risks the track walking off the rollers.
Why do D5C dozers run hot, and what should I check first?
Overheating usually traces to a clogged radiator core or hydraulic/torque-converter oil cooler restricting airflow, a stuck thermostat, low coolant, or a loose or glazed fan belt, roughly in that order of likelihood. A useful check is comparing inlet and outlet temperature across the radiator and the oil cooler separately; a healthy radiator shows a meaningful drop from top to bottom. If the radiator checks out but the machine still runs hot under load, look at the oil cooler core and fan blade condition before suspecting the water pump.
How much electronics does a PAT-blade D5C actually have, and what fails?
Pre-Series-III PAT machines are largely mechanical, no ECM and no sensor network. The starting circuit is a simple key switch to relay to solenoid path, and the charging system just needs battery voltage at the alternator field terminal with the key on. Reported "electrical" complaints are almost always corroded connectors, a damaged ground strap, or a blown fuse rather than a failed sensor or module. Start any no-start or no-charge diagnosis at the battery disconnect switch, fuses, and ground points before chasing wiring diagrams.
What should I check before buying a used D5C PAT?
Confirm the actual engine and series off the data plate rather than trusting the PAT badge alone, since PAT was offered across more than one D5C generation with different engines. Inspect the undercarriage first: idler block travel, track sag, and bushing wear, since it is the costliest item to replace. Check the PAT cylinders and hoses for weeping seals, and look over the blade itself for welds or patch repairs, which usually mean hard prior use. Run the machine under load and watch smoke color, listen for unusual knock, and test steering clutch response in every gear rather than just at idle. Check the color and condition of engine, transmission/hydraulic, and coolant fluids against any service records available. Have your dealer verify steering clutch and brake condition and overall structural integrity before relying on the machine for grading or slope work.
Compiled from owner and technician discussions across the industry — experiences vary by serial range and machine history.
Need a specific D5C PAT part?
Search live OEM part data, check fitment, and cross-reference alternatives with Heavy Parts AI.