Caterpillar D3C II
Caterpillartrack-type tractor

Caterpillar D3C II

Maintenance schedule, common problems & OEM parts breakdown

The Caterpillar D3C II is a small-class track-type tractor powered by Caterpillar's 3204 naturally aspirated four-cylinder diesel, rated at roughly 56 kW (75 hp) gross and 51 kW (69 hp) net at 2400 rpm. Power runs through a planetary powershift transmission with three forward and three reverse speeds, steered by a conventional mechanical clutch-and-brake system with no electronic engine or transmission controls. Operating weight runs from about 7,001 kg (15,435 lb) in the Standard configuration up to roughly 7,788 kg (17,170 lb) for the LGP (Low Ground Pressure) version and about 8,592 kg (18,942 lb) for the extra-wide LGP-S swamp configuration. Caterpillar built the Series II generation in the early 1990s, positioned between the original D3C (Series I), which carried different engine tuning and an earlier serial-number break, and the later D3C Series III, which moved to a six-cylinder engine and added a hydrostatic drivetrain option.

The Series II update kept the four-cylinder 3204 engine architecture from Series I but refined its output ratings and the powershift/steering-clutch calibration, without adding any electronics, so the machine stayed mechanically simple and field-serviceable end to end. That changed with the Series III generation, which replaced the four-cylinder engine with a six-cylinder unit and offered Caterpillar's dual-path hydrostatic transmission alongside the traditional clutch-and-brake steering, a real break in how the machine drives and steers. Because the D3C II predates all of that electronics and hydrostatic complexity, it remains one of the easier compact dozers to diagnose and repair with basic mechanical tooling, and its Standard, LGP, and LGP-S configurations still see steady demand in landscaping, utility, and forestry work where a compact, easily serviced dozer with good flotation options earns its keep on the used and parts market.

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 D3C II specifications

Engine

Engine modelCat 3204, 4-cylinder inline diesel, mechanical direct injection, 5.2 L (317 cu in) displacement. Naturally aspirated. Predates regulated exhaust-emissions tiers (mechanically governed, no ECM).
Gross power76 hp (56.7 kW) at 2400 rpm. Some catalog listings round this to 75 hp (55.9 kW) — treat as the same rating class.
Net power70 hp (52.2 kW) at 2400 rpm. Some catalog listings round this to 69 hp (51.5 kW).
Displacement5.2 L (317.4 cu in / 5,201 cc), 4 cylinders
Production eraSeries II designation dates from the mid/late-1980s through the 1990s, ahead of the later D3C Series III
Note on engine identityThe Series II 3204 four-cylinder engine is distinct from both the earlier plain D3C and the later D3C Series III, which use a six-cylinder Cat 3046. Do not carry 3046 power or displacement figures onto Series II.

Weights

Operating weight — Standard (Std)7,001 kg (15,435 lb)
Shipping weight — Standard (Std)5,565 kg (12,270 lb)
Operating weight — LGP (low ground pressure)7,787 kg (17,170 lb)
Operating weight — LGP-S (extra-wide swamp/SwampCat gauge)8,592 kg (18,942 lb)

Dimensions

Length with blade — Std3.74 m (12 ft 3 in)
Length without blade — Std2.76 m (9 ft 1 in)
Width over tracks — Std1.78 m (5 ft 10 in)
Height to cab/ROPS top — Std2.67 m (8 ft 9 in)
Ground clearance — Std0.30 m (11.6 in)
Track length on ground — Std1.91 m (6 ft 3 in)
Track gauge — Std1.42 m (4 ft 8 in)
Standard track shoe width — Std356 mm (14 in). A wider 406 mm (16 in) shoe option may be available for the standard-gauge chassis — verify with dealer literature if ordering.
Length with blade — LGP4.07 m (13 ft 4 in)
Length without blade — LGP3.00 m (9 ft 10 in)
Width over tracks — LGP2.29 m (7 ft 6 in)
Height to cab/ROPS top — LGP2.67 m (8 ft 9 in)
Ground clearance — LGP0.30 m (11.6 in)
Track length on ground — LGP2.06 m (6 ft 9 in)
Track gauge — LGP1.65 m (5 ft 5 in)
Track shoe width — LGP635 mm (25 in)
Length with blade — LGP-S4.18 m (13 ft 9 in)
Length without blade — LGP-S3.40 m (11 ft 2 in)
Width over tracks — LGP-S3.00 m (9 ft 10 in)
Height to cab/ROPS top — LGP-S2.74 m (8 ft 11 in)
Ground clearance — LGP-S0.28 m (11.0 in)
Track length on ground — LGP-S2.45 m (8 ft 0 in)
Track gauge — LGP-S2.00 m (6 ft 7 in)
Track shoe width — LGP-S990 mm (39 in) extra-wide swamp shoe

Performance

TransmissionPlanetary power-shift, 3 speed ranges forward and 3 reverse, across all configurations
Max travel speed forward — Std / LGP10.8 km/h (6.7 mph)
Max travel speed forward — LGP-S10.9 km/h (6.8 mph)
Max travel speed reverse — all configurations11.4 km/h (7.1 mph)
Ground pressure — Std49.6 kPa (7.2 psi) on the standard 356 mm (14 in) shoe
Ground pressure — Std, wide-shoe option~44.5 kPa (6.45 psi), single-source reference only — verify before quoting
Ground pressure — LGP28.3 kPa (4.1 psi)
Ground pressure — LGP-S17.0 kPa (2.47 psi)
Drawbar pull / gradeabilityNot published in any catalog or spec-sheet source located for this model and configuration set. Confirm against the factory performance chart or dealer literature if this figure is required.

Blades

Standard blade — width2.44 m (8 ft), fitted to the Std chassis
Standard blade — height840 mm (33.1 in)
Standard blade — capacity1.30 m3 (1.7 yd3)
Standard blade — cutting depth399 mm (15.7 in)
Standard blade — angle25 degrees each direction
LGP blade — width3.17 m (10.4 ft)
LGP blade — height749 mm (29.5 in)
LGP blade — capacity1.30 m3 (1.7 yd3)
LGP blade — cutting depth424 mm (16.7 in)
LGP-S blade — width2.80 m (9.2 ft)
LGP-S blade — height739 mm (29.1 in)
LGP-S blade — capacity1.22 m3 (1.6 yd3)
LGP-S blade — cutting depth353 mm (13.9 in)

Service capacities

Fuel tank — Std / LGP121 L (32 US gal)
Fuel tank — LGP-S114 L (30.2 US gal)
Engine oil (with filter)12.1 L (3.2 US gal), consistent across configurations reported
Hydraulic system — Std57.2 L (15.1 US gal)
Hydraulic system — LGP56.8 L (15.0 US gal)
Cooling system20.1 L (5.3 US gal), all configurations reported
Final drives, each side — Std8.3 L (2.2 US gal)
Final drives, each side — LGP12.1 L (3.2 US gal)
Hydraulic pump type and flowSingle-section gear pump, approximately 55 L/min (14.6 gal/min) flow, as reported for the Std configuration
Hydraulic relief valve settingApproximately 17,237 kPa (2,500 psi), as reported for the Std configuration

Values vary by configuration, region, and serial range — confirm against your machine before planning transport or lifts.

D3C II fluids & capacities

SystemCapacityRecommended fluid
Engine crankcase (with filter)12.1 L (3.2 US gal)Cat diesel engine oil (Cat DEO family). Multigrade SAE 10W-30 covers roughly -18°C to 40°C (0°F to 104°F) and is the default fill for most climates; straight SAE 30 is acceptable in warm, stable ambient ranges. Colder regions step down to SAE 10W or an arctic-grade engine oil. Engine is the naturally aspirated Cat 3204, 4-cylinder, 4.4 L diesel.
Cooling system20.1 L (5.3 US gal)Cat conventional heavy-duty coolant/antifreeze (DEAC-type), consistent with this machine's production era; extended-life coolant is a later-era Cat option and is not confirmed as the factory fill for this model. Full-strength mix is typically rated to roughly -37°C (-34°F); adjust glycol ratio for colder ambient service.
Fuel tank121.1 L (32.0 US gal)No. 2-D diesel fuel for normal/warm ambient conditions; switch to No. 1-D or a winterized blend in cold weather to control cold-flow/gelling.
Transmission / powertrain (powershift transmission, bevel gear, and steering clutch compartments)Not separately published for this model; treat as a combined power-train compartment pending OMM confirmation. A combined figure near 57.2 L (15.1 US gal) is sometimes given, which may represent implement hydraulics only, the shared power-train/hydraulic system, or a mix of the two — the exact split between transmission, bevel gear, and steering clutch sub-compartments is not confirmed. Verify against the OMM for this serial range.Cat Transmission/Drive Train Oil (Cat TDTO) is the standard fluid family for the powershift transmission, bevel gear, and steering clutch compartments on this class of Cat track-type tractor; the same oil type serves all three compartments. TDTO 30 (or equivalent multigrade TDTO) suits most climates; colder regions use a lighter-viscosity or arctic-grade TDTO.
Final drives (each side)8.3 L (2.2 US gal) per published figures — not confirmed whether this figure is per side or combined; verify against the OMM before service.Cat TDTO, same family and viscosity-by-climate guidance as the transmission/power-train compartments.
Hydraulic system / tank57.2 L (15.1 US gal)Cat TDTO or Cat Hydraulic Oil (Cat HYDO), depending on the exact OMM callout for this serial range — machines of this vintage commonly share TDTO across the power-train and implement-hydraulic circuits, while later Cat literature favors a dedicated HYDO fill; confirm the specific callout against the OMM for the machine's serial prefix. Viscosity grade follows the same climate bands as the engine/transmission oils (heavier grade in hot climates, lighter or arctic grade in cold).
Pivot shaft (equalizer bar) and grease fittingsNo fill capacity applies — lubricated via grease fitting, not a reservoir.Cat multipurpose grease, NLGI 2 (lithium-complex) for normal climates; step down to NLGI 1 or NLGI 0 in cold weather for easier gun feed and fitting penetration. Apply at the pivot shaft/equalizer bar, track idlers, rollers, and other chassis grease points per the scheduled maintenance interval.
Grease specification (general)Not applicable — grease fittings, no reservoir volume.Cat multipurpose grease (NLGI 2 standard climate / NLGI 1-0 cold climate), lithium-complex base, for all track-type tractor chassis grease points.

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

Caterpillar D3C II maintenance schedule

Service intervalTasks
Every 50 h
  • Check engine oil level and coolant level before starting the machine.
  • Drain water and sediment from the primary fuel filter/water separator.
  • Check hydraulic tank fluid level and inspect hoses, cylinder rods, and fittings for leaks.
  • Inspect track tension, shoe bolts, and grousers for looseness or damage.
  • Grease steering clutch and brake linkage pins, blade lift/tilt cylinder pivots, and blade angle linkage.
  • Check final drive oil level on both sides.
Every 250 h
  • Change engine oil and filter.
  • Replace the fuel filter element(s).
  • Check and adjust track sag; inspect idlers and rollers for oil seepage.
  • Check steering clutch and brake pedal travel and linkage adjustment.
  • Check battery terminals, cable connections, and electrolyte level.
  • Inspect powershift and hydraulic oil for contamination or discoloration.
Every 500 h
  • Change powershift/steering clutch compartment oil and filter.
  • Change the hydraulic system oil filter.
  • Check and adjust the fan belt tension.
  • Lubricate track master pins, bushings, and the equalizer bar pivot shaft.
  • Inspect final drive oil condition and top off as needed.
Every 1,000 h
  • Change final drive oil in both final drive housings.
  • Change hydraulic tank oil and clean the tank strainer and breather.
  • Inspect steering clutch and brake discs for wear through the inspection covers.
  • Clean the radiator core and check the fan and shroud for buildup or damage.
  • Inspect undercarriage sprockets, idlers, and rollers for wear pattern; resequence track shoes if worn unevenly.
  • Check engine and drivetrain mounting bolts for correct torque.
Every 2,000 h
  • Adjust engine valve lash on the mechanically governed 3204.
  • Test engine coolant condition and corrosion inhibitor level; renew if out of spec.
  • Inspect and adjust the steering clutch release mechanism and brake band linkage.
  • Inspect torsion bar and track frame pivot shaft bushings for play.
  • Check fuel injection pump timing and governor linkage adjustment.
  • Inspect crankshaft vibration damper condition.
Every 4,000 h
  • Inspect steering clutch and brake packs for rebuild; replace friction discs and separator plates as a matched set if worn.
  • Inspect powershift transmission clutch packs for wear and rebuild if flare or slip is present.
  • Evaluate undercarriage major components (sprockets, idlers, rollers, track chain) for replacement, especially on LGP and LGP-S machines.
  • Inspect engine top end (cylinder head, injectors, injection pump) for overhaul needs.
  • Check final drive and steering clutch housings for seal and bearing wear at teardown.

Servicing the D3C II beyond the schedule

Predictive maintenance & fluid analysis

Draw oil samples from the engine crankcase, powershift/steering clutch compartment, and hydraulic tank at scheduled intervals since the D3C II carries no onboard diagnostics or ECM fault codes to flag wear early. Watch powershift and steering clutch oil for friction material and metal fines as an early tell for clutch pack or steering valve wear before it shows up as slow-to-move symptoms. Track coolant condition and corrosion inhibitor level on the naturally aspirated 3204 to catch cylinder liner cavitation before it turns into a costly rebuild.

Corrective & common repairs

Slow-to-move or sluggish steering usually traces to worn steering valve rollers or low powershift charge pressure, not the clutch discs themselves; check charge pressure and valve travel first. Track drag or slip during turns on the mechanical clutch-and-brake steering points to worn steering clutch discs or a maladjusted brake band. Blade drift or jerky lift and tilt response is typically a worn control valve spool or cylinder seal rather than the pump. Rebuild steering clutch and brake packs as a matched set, not piecemeal.

Overhaul & rebuild points

Steering clutch and brake packs are the D3C II's highest-wear driveline component and the usual overhaul trigger, especially on machines that logged hours spinning tight turns. Powershift clutch packs wear next, showing up as flare or slip shifting between forward and reverse ranges. On LGP and LGP-S configurations, undercarriage bushings, idlers, and rollers wear faster under the wider, heavier track group than on the Standard configuration, so budget undercarriage rebuild sooner. Inspect final drive housings for seal leakage at every major teardown.

Seasonal & environment servicing

LGP-S swamp configurations spend hours in standing water and soft ground, so inspect final drive and steering clutch compartments more often for seal contamination from water intrusion. Before winter storage, drain the fuel tank water separator, switch to a cold-weather fuel blend, and verify coolant freeze protection on the naturally aspirated 3204, which has no factory block heater on every unit. In wet or freezing climates, clean mud and debris from undercarriage and steering linkage points daily to keep the clutch-and-brake linkage from packing solid and freezing up.

D3C II common service parts

Part numberPart
6V-7614Film-IdentificationCheck fitment →
6V-2219Kit-GasketCheck fitment →

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

D3C II fault codes & troubleshooting

CodeMeaningLikely causeWhat to do
No engine/machine diagnostic trouble code systemThe D3C II runs the mechanically governed 3204 naturally aspirated diesel with a conventional powershift transmission and mechanical clutch-and-brake steering. None of these systems carry an ECM, so there is no CID/FMI/SPN fault code display and no Cat ET or data-link readout on this machine.Not applicable - this is a design characteristic of the pre-electronic-control machine, not a fault.Diagnose using gauge readings, warning lamp state, and mechanical inspection; a digital scan tool has nothing to connect to.
Coolant Temperature warning lampRed console lamp with a thermometer symbol lights when engine coolant temperature climbs above the normal operating range.Low coolant level, a radiator core packed with debris, a slipping or broken fan belt, or a failed thermostat.Reduce load, let the engine idle to cool, then check coolant level, radiator core, and belt condition before resuming work.
Engine Oil Pressure warning lampRed console lamp with an oil-can symbol lights when engine oil pressure drops below the safe minimum.Low oil level, a clogged oil filter, a worn oil pump, or a failed pressure sending unit.Shut the engine down right away, check oil level and filter condition, and do not restart until the cause is found.
Alternator/Charging System warning lampBattery-symbol lamp lights when the charging system stops producing output.A loose or worn alternator belt, a failed alternator, a bad voltage regulator, or a loose or corroded wiring connection.Check belt tension and wiring connections first, then test alternator output if the lamp stays on.
Air cleaner restriction indicatorA restriction gauge or flag (not always a dash lamp on this era of machine) shows the air filter element is loading up.Heavy dust on the jobsite, a worn or undersized filter element, or a damaged intake seal allowing unfiltered air past the element.Service or replace the air filter element once the indicator reads full restriction; do not clean past the rated service life.

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

D3C II attachments & work tools

Blades

Standard blade is a fixed straight (S-type) dozer blade about 2.44 m (8 ft) wide with roughly 1.3 m3 (1.7 cu yd) capacity, 25 degrees power-angle each direction, and about 400 mm (15.7-16.7 in) cutting depth depending on track option. LGP-configured machines carry a wider blade around 3.17 m (10.4 ft) matched to the low-ground-pressure track gauge, same capacity class as the standard-gauge blade. This is the Series II generation, so no VPAT (variable pitch/angle/tilt) blade — VPAT appears only on the later Series III small-dozer line; semi-U or full-U blade faces are the practical alternates for this class but aren't separately itemized in surviving spec sheets, so confirm exact face profile with a dealer or the machine's plate.

Rippers

This chassis shares its ripper mounting with the wider D3B/D3C/D4B/D4C/D5C family of small dozers: a single-shank, single-cylinder hinge-type ripper for straightforward penetration, or a parallelogram-type multi-shank ripper (twin cylinder, multi-pocket beam) for controlled shank angle through the pass. Neither ripper is base equipment — the rear linkage bolts to the frame and needs its own hydraulic valve added to the machine, not included with the ripper itself. Ripper weight isn't consistently broken out for the II-series specifically; treat it as the same ripper family used across the D3-D5C generation of this size class.

Winches

A rear-mounted hydraulic cable winch in the PA-class range (similar in size to the PA40 fitted to this dozer size) is the common forestry/logging option, spooling roughly 19 mm (3/4 in) wire rope for skidding logs or self-recovery. Winch fitment is a factory or dealer add-on, not base equipment, and it occupies the same rear-frame mounting space as the ripper or drawbar, so typically only one rear tool is carried at a time.

Drawbars/counterweights

A rear drawbar for towing bolts to the same rear-frame location used by the ripper or winch, fitted when neither of those is mounted. A front counterweight is commonly added on winch- or forestry-equipped machines to offset the rearward weight shift from the winch and rear guarding package; exact counterweight mass isn't consistently documented for the II-series and varies by dealer forestry package.

Cab/ROPS guarding

Base protection is a four-post ROPS canopy, with an enclosed cab (heat and air conditioning) offered as an option. For forestry or waste-handling duty, bolt-on brush screens/guards — welded wire mesh over angle-iron framing — are commonly added over the ROPS or cab glass, the radiator grille, and the track rollers; this is supplemental brush guarding, not a certified FOPS/ROPS structure in itself. Forestry packages for this dozer class also typically add full-length track guards and limb risers ahead of the blade to protect the undercarriage and push arms in brush.

Hydraulic arrangement notes

Base hydraulics are open-center with a single-section gear pump, about 55 L/min (14.5-14.6 gpm) at roughly 17 MPa (2500 psi) relief, dedicated to the front blade lift/tilt/angle circuit. A rear ripper or winch is not plumbed from the factory: fitting either one requires an auxiliary control valve and separate hose routing tapped into the same pump circuit, sized to the specific rear tool by whoever installs it.

All D3C II assemblies by section

Every catalogued assembly group for the Caterpillar D3C II. Open an assembly to preview the parts inside — full OEM part numbers are available in Heavy Parts AI.

Air Inlet And Exhaust System
7w8765 Air Cleaner Gp
7w8764 Air Cleaner Gp
7e0831 Extension Gp-Exhaust
1w5054 Lines Gp-Air
1W***54Lines Group-Air; Air Lines Group1
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7n4971 Manifold Gp-Exhaust
7N***71Manifold Group-Exhaust; Exhaust Manifold Group1
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4n5202 Muffler Gp
7n4970 Muffler Gp
5m2735 Prescreener Gp
5M***35Prescreener Group; Prescreener Group----------------------.1
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Basic Engine
6n2393 Camshaft Gp-Single
6N***93Camshaft Group-Single; Camshaft Group-Single1
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2w7486 Cover Gp-Valve Mechanism
2W***86Cover Group-Valve Mechanism; Valve Mechanism Cover Group1
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Crankshaft Bearing Replacements
1W***55Bearing (0.25mm Undersize)2
1W***56Bearing (0.51mm Undersize)2
1W***57Bearing (1.27mm Undersize)2
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7w3926 Crankshaft Gp
7W***26Crankshaft Group; Crankshaft Group1
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1w4327 Cylinder Block As
2w7902 Cylinder Block As
1w4326 Cylinder Block Gp
1W***26Cylinder Block Group; Cylinder Block Group1
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7w9390 Cylinder Head As
7c3805 Cylinder Head As*R
7c2296 Cylinder Head As
6n2467 Cylinder Head Gp*R
6N***67Cylinder Head Group; Cylinder Head Group1
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7w9392 Cylinder Head Gp*R
7n5141 Drive Gp-Fan
7N***41Drive Group-Fan; Water Pump Drive Group1
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7n6937 Flywheel Gp
1w1355 Gear Gp-Front
1W***55Gear Group-Front; Front Gear Group1
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7n6344 Housing Gp-Flywheel
7N***44Housing Group-Flywheel; Flywheel Housing Group1
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2w4384 Housing Gp-Front
2W***84Housing Group-Front; Front Housing Group1
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1w5554 Lifting Gp
6n8370 Pan Gp-Oil
8n4079 Piston & Rod Gp-4 Required
8N***79Piston & Rod Group; Connecting Rod And Piston Group1
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2w8419 Piston Gp
7n5138 Pulley Gp-Crankshaft
7N***38Pulley Group-Crankshaft; Auxiliary Drive Pulley Group1
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4n0300 Support Gp-Engine & Transmission
1w5720 Valve Mechanism Gp
1W***20Valve Mechanism Group; Valve Mechanism Group1
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Cooling System
1n4903 Cooler Gp-Engine Oil
1N***03Cooler Group-Engine Oil; Engine Oil Cooler Group1
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7n9989 Fan Gp-Blower
4n2220 Fan Gp-Suction
4N***20Fan Group-Suction; Suction Fan Group1
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6n9739 Heater Gp-Jacket Water (750 Watt, 120 Volt)
6N***39Heater Group-Jacket Water; Jacket Water Heater Group1
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6n9125 Heater Gp-Jacket Water (750 Watt, 120 Volt)
4n0188 Lines Gp-Water
4N***88Lines Group-Water; Water Lines Group1
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4n0660 Pump Gp-Water
4N***60Pump Group-Water; Water Pump Group1
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9y0795 Radiator Gp
9y0794 Radiator Gp
8n5864 Radiator Gp
7c7740 Radiator Gp
7c7741 Radiator Gp
Electrical System
8y5067 Lighting Gp-3 Lamp
8y2520 Lighting Gp
8y7145 Lighting Gp-3 Lamp
7n4784 Alternator Gp-Charging
1w4263 Alternator Gp-Charging
8n2268 Alternator Gp-Charging
8n2822 Alternator Gp-Charging
6V***78Nut; (10-32-Thd)2
8F***34Lockwasher; (External Teeth)2
8N***68Alternator Group-Charging1
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8y5048 Battery & Wiring Gp-Part 1 Of 2
8y5048 Battery & Wiring Gp-Part 2 Of 2
6s3548 Battery Gp
9x9069 Lamp Gp-Flood
9x7779 Lamp Gp-Flood
9X***79Lamp Group-Flood; -Roading Lights1
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5g2541 Starting Aid Gp-Ether
4n0190 Starting Motor Gp-Electric-12 Volt
4N***90Starting Motor Group-Electric; Electric Starting Motor Group1
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9x0354 Starting Motor Gp-Electric
3e1865 Starting Motor Gp-Electric-12 Volt
9g5517 Switch As-12 Volt
8n0410 Switch Gp
9g7641 Switch Gp-Start
9G***41Switch Group-Start; -Engine, Key-Vims Service1
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5g0457 Wiring Gp
5G***57Wiring Group-Cab; Cab Wiring Group1
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Engine Arrangement
4p0907 Engine Ar-Part 2 Of 2
1W***05Lines Group-Fuel Injection; Fuel Injection Lines Group1
1W***54Lines Group-Air; Air Lines Group1
1W***54Lifting Group1
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4p0907 Engine Ar-Part 1 Of 2
1N***24Filter Group-Oil; Oil Filter Group1
1N***03Cooler Group-Engine Oil; Engine Oil Cooler Group1
1W***67Gauge Group-Oil Level (Dipstick)1
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Final Drive
8y0231 Final Drive Gp
5g4727 Final Drive Gp
5G***27Final Drive Group; Final Drive Group1
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8y0230 Final Drive Gp
6y2047 Segment Gp-Sprocket-2 Required
Frame And Body
8y5644 Counterweight Gp-Front
5g0779 Drawbar Gp
5g5317 Drawbar Gp-Swinging
8y5329 Firewall Gp
8y5230 Firewall Gp
5g0262 Frame Gp
5g4724 Frame Gp
5g1185 Guard Gp-Bottom
5g2342 Guard Gp-Brush
5g2327 Guard Gp-Brush
8y5039 Guard Gp-Radiator
8y1708 Guard Gp-Radiator
8y5244 Hood & Guard Gp
8y5060 Hood & Guard Gp
6s3864 Hook Gp-Front Pull
5g2362 Liner Gp-Sound
8y5077 Sweep Gp
Fuel System
2w0262 Camshaft As
5g3612 Cap Gp-Protection
5G***12Cap Group-Protection; Fuel Filler Protection Cap Group1
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8y5034 Control Gp-Governor
7e3734 Filter Gp-Fuel
1w8730 Governor Gp-Part 3 Of 3
1w8730 Governor Gp-Part 1 Of 3
1w8730 Governor Gp-Part 2 Of 3
5g4583 Lines Gp-Fuel
1w4105 Lines Gp-Fuel Injection
1W***05Lines Group-Fuel Injection; Fuel Injection Lines Group1
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7n0042 Lines Gp-Fuel Injection
1w6539 Pump Gp-Fuel Injection
2w0263 Pump Gp-Fuel Injection
4n4314 Pump Gp-Fuel Priming
4N***14Pump Group-Fuel Priming; Fuel Priming Pump Group1
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2w6309 Pump Gp-Fuel Transfer
2w4403 Pump Gp-Fuel Transfer
2W***03Pump Group-Fuel Transfer; Fuel Transfer Pump Group1
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1006406 Pump Gp-Fuel Transfer
1w0568 Pump Gp-Fuel Transfer
7w0189 Governor & Fuel Injection Pump Gp
7W***89Pump Group-Gov & Fuel Inj; Governor & Fuel Injection Pump Group1
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8y5045 Tank Gp-Fuel
4w5063 Torque Control Gp
Hydraulic System
9j8698 Cylinder Gp-Angling (Chgs 01-04)
9J***98Angling Cylinder Group; Angling Cylinder Group1
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8y4983 Control Gp-Hydraulic Hand
8y7111 Control Gp-Hydraulic Hand
8y4984 Control Gp-Hydraulic Hand
8y5053 Control Gp-Hydraulic Hand
8y0639 Control Gp-Hydraulic Hand
8Y***39Control Group-Hydraulic Hand; Control Gp-Hydraulic Hand1
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7j9223 Cylinder Gp-Lift (Chgs 01-09)
8y0247 Lines Gp-Pump
8Y***47Lines Group-Pump; Lines Gp-Pump1
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8y5078 Lines Gp-Pump
8y0246 Lines Gp-Rear
8Y***46Lines Group-Rear Attachment; Lines Gp-Rear Attachment1
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8e4707 Lines Gp-Tilt Cylinder
8e4721 Lines Gp-Tilt Cylinder
8E***21Lines Group-Tilt Cylinder; Lines Gp-Tilt Cylinder1
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8y2410 Lines & Pump Gp
8Y***10Pump & Lines Group; Lines & Pump Gp-Winch1
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8y2451 Lines & Pump Gp
3g5386 Pump Gp-Gear
3G***86Pump Group-Gear; Gear Pump Group-Shimadzu Seisakusho1
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8j4514 Pump Gp-Gear
8j4512 Pump Gp-Gear
8J***12Pump Group-Gear; Gear Pump Group-Single Section1
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3g5046 Pump Gp-Gear
6e1413 Pump Gp-Gear
3g5385 Pump Gp-Gear
1u0414 Pump Gp-Gear
8j4513 Pump Gp-Gear
8j4515 Pump Gp-Gear
8J***15Pump Group-Gear; Gear Pump Group-Tyrone1
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9j8674 Cylinder Gp-Tilt (Chgs 00-04)
9J***74Tilt Cylinder Group; Tilt Cylinder Group1
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9t7249 Valve Gp-Bank
9t7250 Valve Gp-Bank
9T***50Valve Group-Bank; Valve Gp-Bank1
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9t7248 Valve Gp-Bank
9T***48Valve Group-Bank; Valve Gp-Bank1
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9t7642 Valve Gp-Control
9T***42Valve Group-Control; -Angle, Tilt1
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9t7651 Valve Gp-Control
9t7641 Valve Gp-Control
9t7638 Valve Gp-Relief
9T***38Valve Group-Relief; (Pilot Operated)1
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9t7639 Valve Gp-Relief
9T***39Valve Group-Relief; (Direct Operated)1
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8j6894 Cylinder Gp-Lift (Chgs 01-04)
8J***94Cylinder Group-Lift; Lift Cylinder Group1
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7j9920 Cylinder Gp-Ripper (Chg 08)
8j6893 Cylinder Gp-Tilt (Chg 05)
8y5032 Hydraulic Ar-2 Valve
6S***54Film-Instruction; (Instruction)1
8J***14Pump Group-Gear1
8Y***83Control Group-Hydraulic Hand1
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8y5065 Hydraulic Ar-4 Valve
8Y***46Lines Group-Rear Attachment; Lines Gp-Rear Attachment1
8Y***39Control Group-Hydraulic Hand; Control Gp-Hydraulic Hand1
8Y***83Control Group-Hydraulic Hand1
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8y7126 Hydraulic Ar-4 Valve
8Y***46Lines Group-Rear Attachment; Lines Gp-Rear Attachment1
8Y***11Control Group-Hydraulic Hand1
8Y***26Hydraulic Ar1
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8y5068 Hydraulic Ar-3 Valve
8Y***83Control Group-Hydraulic Hand1
8Y***84Control Group-Hydraulic Hand1
8Y***68Hydraulic Ar1
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8y5062 Hydraulic Ar-2 Valve
6S***54Film-Instruction; (Instruction)1
8Y***83Control Group-Hydraulic Hand1
8Y***62Hydraulic Ar1
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8e4277 Lines Gp-Angle & Tilt
8e4278 Lines Gp-Angle & Tilt
8y5054 Lines Gp-Hydraulic
8y5064 Lines Gp-Hydraulic
8y5214 Lines Gp-Hydraulic
6s3559 Lines Gp-Ripper
6S***59Lines Group-Ripper; Ripper Lines Group1
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8y5069 Tank & Filter Gp-Hydraulic
8y5318 Tank Gp-Hydraulic
8y5055 Valve & Mounting Gp
6s4767 Valve Gp-Breaker Relief
9t7634 Valve Gp-Check
Implements
6y2823 Bulldozer Ar-Straight
4T***03Trunnion Group; Trunnion Group1
4T***04Blade Group-Straight; Straight Blade Group1
4T***05Lift Group-Blade; Blade Lift Group1
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8e4758 Bulldozer Ar-Straight
1u0020 C-Frame Gp
3g3440 C-Frame Gp
8y2452 Drive Ar-Winch
5G***18Drive Group-Power Take-Off; Power Take-Off Drive Group1
8Y***51Pump & Lines Group1
8Y***52Drive Ar-Winch1
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8y6570 Guard Gp-Brush
8Y***70Guard Group-Brush; Guard Gp-Brush1
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8e4276 Mounting Gp-Cylinder Lines
8E***76Mounting Group-Cylinder Lines; Mounting Gp-Cylinder Lines1
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5g0269 Mounting Gp-Trunnion
5G***69Trunnion Mounting Group; Trunnion Mounting Group1
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6y5350 Winch Ar
5G***36Control Group-Winch; Control Gp-Towing Winch1
6Y***55Winch Ar-Towing1
6Y***50Winch Ar1
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6y5351 Winch Ar
5G***36Control Group-Winch; Control Gp-Towing Winch1
6Y***55Winch Ar-Towing1
6Y***51Winch Ar1
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6y5837 Bit & Cutting Edge Gp
6y5838 Bit & Cutting Edge Gp
8j7147 Bit & Cutting Edge Gp
6y5518 Blade Gp-Angling
6y5510 Blade Gp-Angling
8j7126 Blade Gp-Straight
4t7104 Blade Gp-Straight
4T***04Blade Group-Straight; Straight Blade Group1
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8e4078 Bulldozer Ar
1U***20C-Frame Group; C-Frame Group1
5G***69Trunnion Mounting Group; Trunnion Mounting Group1
6Y***10Blade Group-Angling1
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8e4080 Bulldozer Ar
3G***40C-Frame Group1
5G***69Trunnion Mounting Group; Trunnion Mounting Group1
6Y***18Blade Group-Angling1
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8e4081 Bulldozer Ar
3G***40C-Frame Group1
6Y***18Blade Group-Angling1
7B***28Drive Screws-2 Required For Installing2
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8e4079 Bulldozer Ar
1U***20C-Frame Group; C-Frame Group1
6Y***10Blade Group-Angling1
7B***28Drive Screws-2 Required For Installing2
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6y1467 Case & Covers Gp
6y1906 Gear & Clutch Gp-Part 1 Of 2
6y1906 Gear & Clutch Gp-Part 2 Of 2
5g4331 Control Gp-Towing Winch
5G***31Control Group-Winch; Control Gp-Towing Winch1
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6y2048 Control Gp-Winch
6y2216 Control Gp-Winch
5g3938 Control Gp-Towing Winch
5G***38Control Group-Winch; Control Gp-Towing Winch1
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5g2636 Control Gp-Towing Winch
5G***36Control Group-Winch; Control Gp-Towing Winch1
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6y2176 Conversion Ar-Winch
0S***19Bolt,Machine Gear Retaining Part Of Kit P/N 1w***465
1A***83Bolt (4.75" Long-Location "B")2
3T***80Cover As1
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6y2175 Conversion Ar-Winch
0S***19Bolt,Machine Gear Retaining Part Of Kit P/N 1w***465
3T***80Cover As1
5G***38Control Group-Winch; Control Gp-Towing Winch1
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6y1959 Conversion Gp-Winch
6y2217 Conversion Gp-Winch
7g9447 Covers Gp-Shipping
2M***80Seal--To Connector Pump Outlet1
3T***85Cover-Shipping; Shipping Cover1
7G***47Cover Group-Shipping; Shipping Cover Group1
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5g1818 Drive Gp-Power Take-Off
5G***18Drive Group-Power Take-Off; Power Take-Off Drive Group1
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7g9470 Drive Gp-Winch
1u4372 Lift Gp-Blade
1U***72Lift Group-Blade; Blade Lift Group1
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4t7105 Lift Gp-Blade
4T***05Lift Group-Blade; Blade Lift Group1
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6y2111 Lines Gp-Winch
9j2833 Link As
7g6800 Manifold Gp
6t2288 Manifold Gp
8j3294 Mounting Gp-Ripper
8J***94Mounting Group-Ripper; Ripper Mounting Group1
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6s7351 Mounting Gp-Trunnion
6S***51Mounting Group-Trunnion; Trunnion Mounting Group1
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7g9423 Mounting Gp-Winch
4t7106 Push Arm Gp
8j7124 Push Arm Gp
9j9005 Ripper Ar
2P***17Film-D3 Ripper1
6S***59Lines Group-Ripper; Ripper Lines Group1
7B***28Drive Screws-2 Required For Installing2
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8j3334 Ripper Gp
8j5313 Tooth Gp
4t7103 Trunnion Gp
8j7127 Trunnion Gp
8J***27Trunnion Group; Trunnion Gp-Bulldozer1
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5g1823 Universal Joint Gp
7g6861 Valve Gp
6t2289 Valve Gp
7g6799 Valve Gp-Selector & Pressure Control
7G***99Valve Group-Selector & Press Cont1
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6t2287 Valve Gp-Selector & Pressure Control
6T***87Valve Group-Selector & Press Cont1
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6y2055 Winch Ar-Towing
4B***58Screw (Identification Plate) Mounting4
6V***27Plate, Serial Number; On Left Hand Side Of Winch1
6Y***67Case & Covers Group-Winch1
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Lubrication System
6n3382 Breather Gp
1n3224 Filter Gp-Oil
1N***24Filter Group-Oil; Oil Filter Group1
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9y1898 Fumes Disposal Gp
9Y***98Fumes Disposal Group; Fumes Disposal Group1
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1w0367 Gauge Gp-Oil Level (Dipstick)
1W***67Gauge Group-Oil Level (Dipstick)1
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7w0332 Kit-Pcv Breather
2w6697 Pump Gp-Oil
Operator Station
8y1147 Rops Ar-Open
5G***21Mounting Group-Rops1
5G***73Rops Group1
8Y***47Rops Ar-Open1
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6s7596 Seat Gp-Part 2 Of 2
6s7596 Seat Gp-Part 1 Of 2
8y5481 Seat Gp
9v8786 Seat Gp
8y6713 Seat Gp-Vinyl
8y4741 Cab Gp-Part 4 Of 4
8y4741 Cab Gp-Part 2 Of 4
8y4741 Cab Gp-Part 1 Of 4
8y4741 Cab Gp-Part 3 Of 4
8y5036 Dash Gp
8y5325 Dash Gp
5g0190 Door Gp-Lh-Part 1 Of 2
5g0190 Door Gp-Lh-Part 2 Of 2
5g0200 Door Gp-Rh-Part 2 Of 2
5g0200 Door Gp-Rh-Part 1 Of 2
8m7892 Gauge As-Ammeter
9x5715 Gauge Gp-Cluster
8y5047 Guard Gp-Vandalism
8y5336 Guard Gp-Vandalism
5g0537 Heater Gp-Cab
5G***37Heater Group-Cab; Cab Heater Group1
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8y1562 Horn Gp-Electric
8y5037 Instrument Gp
8y5337 Instrument Gp
9w1490 Kit-Meter Service
8T***01Film; (Service Meter)1
9W***90Kit-Service Meter1
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9g6762 Meter-Service
9G***62Meter-Service1
9W***90Kit-Service Meter1
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8y5315 Mounting Gp-Cab
2N***79Machine Screw--Wire Assembly To Panel4
3D***43Hinge-Butt2
4B***81Screw-Machine4
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5g0521 Mounting Gp-Rops
8y6718 Plate Gp
5g2002 Pressurizer Gp-Cab
5G***02Pressurizer Group; Cab Pressurizer Group1
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5g2055 Pressurizer Gp-Part 3 Of 3
5g2055 Pressurizer Gp-Part 1 Of 3
5g2055 Pressurizer Gp-Part 2 Of 3
8y5238 Rollover Ar
5G***49Washer Group-Windshield; Windshield Washer Group1
5G***57Wiring Group-Cab; Cab Wiring Group1
5G***37Heater Group-Cab; Cab Heater Group1
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5g0673 Rops Gp
8y5040 Seat & Support Gp
8y1177 Seat & Support Gp
8y4037 Seat Belt Gp
8y4029 Seat Belt Gp
8y5480 Seat Gp-Adjustable
8y6714 Seat Gp-Suspension
8y5332 Seat Gp-Suspension
8y5626 Suppression Ar-Sound
4B***58Screw (Identification Plate) Mounting4
4N***02Muffler Group1
5G***62Liner Group-Sound Suppression1
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8y6560 Suppression Ar-Sound
4B***58Screw (Identification Plate) Mounting4
4N***02Muffler Group1
5G***62Liner Group-Sound Suppression1
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5g2925 Suppression Gp-Sound
5G***25Suppression Group-Sound; Sound Suppression Group1
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2v7961 Suspension As-Seat
9c7161 Suspension Gp-Seat-Part 1 Of 2
8y5482 Suspension Gp-Seat
9c7161 Suspension Gp-Seat-Part 2 Of 2
5g0049 Washer Gp-Windshield
5G***49Washer Group-Windshield; Windshield Washer Group1
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5g0974 Wiper Gp
Service Equipment And Supplies
Name Plates & Films-Part 1 Of 2
03***91Pop - Rivet (To Secure Safety Lable)4
3N***90Plate Serial Number; On R.H. Rear Bank Of Cylinder Block As Viewed From Rear Of Engine1
4B***58Screw (Identification Plate) Mounting4
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Name Plates & Films-Part 2 Of 2
10***44Film-Identification1
1P***07Film-Symbol; 2 On Bottom Of Upper Frame Below Engine. 2 On Front Of Upper Frame Above Boom Articulation4
6V***14Film-Identification; (Oil Filter)1
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Steering And Braking System
8y4227 Brake Gp-Steering-Part 2 Of 3
8y2315 Brake Gp-Steering-Part 3 Of 4
8Y***15Brake Group-Steering; Brake Gp-Steering1
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8y4226 Brake Gp-Steering-Part 2 Of 3
8y2316 Brake Gp-Steering-Part 1 Of 4
8Y***16Brake Group-Steering; Brake Gp-Steering1
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8y2316 Brake Gp-Steering-Part 2 Of 4
8Y***16Brake Group-Steering; Brake Gp-Steering1
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8y2316 Brake Gp-Steering-Part 3 Of 4
8Y***16Brake Group-Steering; Brake Gp-Steering1
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8y4226 Brake Gp-Steering-Part 3 Of 3
8y2315 Brake Gp-Steering-Part 1 Of 4
8Y***15Brake Group-Steering; Brake Gp-Steering1
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8y2316 Brake Gp-Steering-Part 4 Of 4
8Y***16Brake Group-Steering; Brake Gp-Steering1
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8y2315 Brake Gp-Steering-Part 4 Of 4
8Y***15Brake Group-Steering; Brake Gp-Steering1
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8y4226 Brake Gp-Steering-Part 1 Of 3
8y4227 Brake Gp-Steering-Part 3 Of 3
8y2315 Brake Gp-Steering-Part 2 Of 4
8Y***15Brake Group-Steering; Brake Gp-Steering1
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8y4227 Brake Gp-Steering-Part 1 Of 3
5g6103 Case Gp-Steering Clutch
5g0997 Case Gp-Steering Clutch
5g8725 Clutch Gp-Steering
5G***25Clutch Group-Steering; Clutch Gp-Steering Brake1
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6s3528 Clutch Gp-Steering
8y5050 Control Gp-Decelerator
8y4229 Control Gp-Steering Clutch-Part 2 Of 2
8y4229 Control Gp-Steering Clutch-Part 1 Of 2
8y4626 Lines Gp-Steering
8y5226 Steering Ar
1A***57Ball-Steering Clutch Release Yoke1
1M***23Insert-Steering Clutch Release Yoke1
5G***03Case Group-Steering Clutch1
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8y5229 Steering Ar
8Y***15Brake Group-Steering; Brake Gp-Steering1
8Y***26Lines Group-Steering1
8Y***29Steering Ar1
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8y5235 Steering Ar-Clutch & Brake
1A***57Ball-Steering Clutch Release Yoke1
1M***23Insert-Steering Clutch Release Yoke1
5G***03Case Group-Steering Clutch1
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8y4018 Valve Gp-Control
8y6735 Valve Gp-Control
8y5119 Valve Gp-Control
8y4011 Valve Gp-Control
8y6733 Valve Gp-Control
8y6734 Valve Gp-Control
8y5118 Valve Gp-Control
8y6737 Valve Gp-Control
Torque Converter
5g1378 Lines Gp-Torque Converter Cooler
1t1912 Torque Converter Gp
1t1390 Torque Converter Gp
Transmission
9p6238 Case & Parts Gp-Part 1 Of 2
8e7614 Case & Parts Gp-Part 1 Of 2
8e7614 Case & Parts Gp-Part 2 Of 2
9p6238 Case & Parts Gp-Part 2 Of 2
8y5052 Control Gp-Transmission
9p5695 Control Gp-Transmission Hydraulic
9P***95Control Group-Transmission Hydraulic; Control Gp-Transmission Hydraulic1
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9p7244 Covers Gp-Shipping
9P***44Cover Group-Shipping; (Storage)1
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9p4540 Drive Gp-Pump
5g1239 Filler Gp-Power Train Oil
9p6277 Filter Gp-Transmission
9P***77Filter Group-Transmission; -Transmission1
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9p7243 Transfer Case & Gear Gp
5g1224 Gear Gp-Bevel
5g0905 Lines Gp-Power Train Oil
7g7601 Planetary Gp-Part 1 Of 2
7g7601 Planetary Gp-Part 2 Of 2
8e7652 Pump Gp
9p7239 Pump Gp-Gear
8e7651 Pump Gp-Gear
9p7240 Pump Gp-Gear
6y6844 Transmission Ar
1T***12Torque Converter Group1
3E***41Transfer Gear-Output0
3E***42Kit-Gasket; (Planetary)0
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7g7600 Transmission Ar
1T***90Torque Converter Group1
7G***00Transmission Ar1
7G***01Planetary Group1
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9p5694 Valve Gp-Selector & Pressure Control
9p5693 Valve Gp-Selector & Pressure Control
9P***93Valve Group-Selector & Press Cont1
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Undercarriage
8y1103 Frame Gp-Track Roller
5g4754 Frame Gp-Track Roller
5G***54Frame Group-Track Roller; Track Roller Frame Group1
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1127875 Frame Gp-Track Roller
1043606 Guard Gp-Track Roller-Rear
8y0268 Guard Gp-Track Roller
1043605 Guard Gp-Track Roller-Rear
8y0269 Guard Gp-Track Roller
6y2520 Track Gp-2 Required
4K***38Bolt-Track (9/16-18 X 1.625 In); Bolt-Track-(9/16 X 18 X 1.6 In)144
5A***87Bolt-Track-( 9/16 X 18 X 3.0 In)4
6Y***28Shoe-Track36
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6y1675 Track Gp-2 Required
4K***38Bolt-Track (9/16-18 X 1.625 In); Bolt-Track-(9/16 X 18 X 1.6 In)152
5A***87Bolt-Track-( 9/16 X 18 X 3.0 In)1
6Y***85Shoe-Track38
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6y1680 Track Gp-2 Required
5A***87Bolt-Track-( 9/16 X 18 X 3.0 In)172
5P***83Bolt-Track-(9/16 X 18 X 4.3 In)4
6T***79Shoe-Track-(Master)1
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9n4201 Track Gp-2 Required
4K***38Bolt-Track (9/16-18 X 1.625 In); Bolt-Track-(9/16 X 18 X 1.6 In)144
5A***87Bolt-Track-( 9/16 X 18 X 3.0 In)4
6Y***11Link As-Track1
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6y1679 Track Gp-2 Required
4K***38Bolt-Track (9/16-18 X 1.625 In); Bolt-Track-(9/16 X 18 X 1.6 In)76
5A***87Bolt-Track-( 9/16 X 18 X 3.0 In)78
5P***83Bolt-Track-(9/16 X 18 X 4.3 In)2
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6y2521 Track Gp-2 Required
4K***38Bolt-Track (9/16-18 X 1.625 In); Bolt-Track-(9/16 X 18 X 1.6 In)144
5A***87Bolt-Track-( 9/16 X 18 X 3.0 In)4
6Y***81Shoe-Track36
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6s9359 Cleaner Bar Gp-Track
6s8902 Counterweight Gp-Idler
5g4371 Guard Gp-Recoil Mechanism
1038842 Guard Gp-Recoil
5g4757 Guard Gp-Recoil Mechanism
5G***57Guard Group-Recoil Mechanism; Recoil Mechanism Guard Group1
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1038840 Guard Gp-Recoil Mechanism
5g0381 Guard Gp-Recoil Mechanism
1025937 Guard Gp-Rock
1081580 Guard Gp-Rock
5g4756 Idler Gp-Front-Part 1 Of 2
5G***56Idler Group-Front; Front Idler Group1
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6s7272 Idler Gp-Front-Part 2 Of 2
5g4380 Idler Gp-Front-Part 2 Of 2
5g4756 Idler Gp-Front-Part 2 Of 2
5G***56Idler Group-Front; Front Idler Group1
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5g4380 Idler Gp-Front-Part 1 Of 2
6s7272 Idler Gp-Front-Part 1 Of 2
6y1642 Link As-Track
6y1512 Link As-Track
6y1510 Link As-Track
6y1511 Link As-Track
3t4353 Roller Gp-Track-Double Flange-4 Required
3T***53Roller Group-Track; Double Flange Track Roller Group1
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3t4352 Roller Gp-Track-Single Flange
3T***52Roller Group-Track; Single Flange Track Roller Group1
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6s3609 Roller Gp-Track Carrier-2 Required
6S***09Roller Group-Track Carrier; Track Carrier Roller Group1
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5g0379 Support Gp-Undercarriage
5g4758 Support Gp-Undercarriage
5G***58Support Group-Undercarriage; Undercarriage Support Group1
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5g0378 Support Gp-Undercarriage
8y5218 Undercarriage Ar
3T***53Roller Group-Track; Double Flange Track Roller Group2
5G***54Frame Group-Track Roller; Track Roller Frame Group1
5G***56Idler Group-Front; Front Idler Group1
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D3C II serial number reference

The PIN/serial plate on a D3C II is a riveted metal tag on the machine frame, on the left side near the cab/engine compartment on this size of dozer (not on a rear frame rail as on larger models). The full PIN reads as a 3-letter prefix followed by a sequence number, e.g. 8DG00020; the letters are the prefix that ties the unit to its model, build era, and parts/service manual, the digits are the individual unit count within that prefix run.

PrefixIdentifies
5CJD3C Series II / D3C LGP Series II
8DGD3C Series II
4HJD3C Series II
5ZGD3C Series II
7JGD3C Series II

Frequently asked questions

What engine does the Caterpillar D3C II use?

The D3C II runs Caterpillar's 3204 naturally aspirated four-cylinder diesel, rated at roughly 56 kW (75 hp) gross and 51 kW (69 hp) net at 2400 rpm. It is mechanically governed, with no electronic engine controls.

What is the operating weight of the Caterpillar D3C II?

Operating weight varies by configuration: about 7,001 kg (15,435 lb) for the Standard dozer, roughly 7,788 kg (17,170 lb) for the LGP (Low Ground Pressure) version, and up to about 8,592 kg (18,942 lb) for the extra-wide LGP-S swamp configuration.

What replaced the Caterpillar D3C II?

Caterpillar replaced the D3C II with the D3C Series III, which moved to a six-cylinder engine and added a dual-path hydrostatic (Hystat) drivetrain option alongside the traditional mechanical clutch-and-brake steering.

What D3C II owners discuss

What's a known cold-starting quirk with the D3C II's 3204 engine?
The naturally aspirated 3204 in the D3C II used either a glow-plug starting aid or ether/starting fluid, depending on build date. Hard cold starts usually trace to marginal compression, not a bad starting aid. Compression down around 2965-3068 kPa (430-445 psi) gives combustion temps too low for reliable light-off; a healthy engine runs roughly 510-649 C (roughly 950 to 1,200 F). Do not spray ether into a glow-plug-equipped 3204. It can snap a glow-plug tip, and the broken tip can drop into the cylinder or reach a valve, causing internal damage. Confirm which starting aid your machine has before using starting fluid, and have your dealer verify compression and the starting-aid setup on a hard-starting engine.
Why does the D3C II steer hard or fail to turn one direction?
The D3C II uses mechanical clutch-and-brake steering, not hydrostatic. The most reported failure point is the bearing on the steering valve spool. The roller still turns after the bearing wears, so pedal travel increases and the clutch doesn't fully release even with the pedal bottomed out. A leak in the steering-pressure circuit on one side shows up as a pedal needing much more force, or the machine stopping instead of turning unless engine RPM is raised. Check pedal free play and brake-band adjustment first, field spec on these machines runs roughly 125-150 mm (5-6 in) of free play, though it can vary by manual revision, so confirm against the OEM spec for your serial range. Do not over-tighten a brake band before confirming the clutch is releasing, that can damage both. Because a steering fault at speed is a safety issue, have your dealer verify clutch release and steering-valve condition before returning the machine to work.
Why won't a D3C II move until it's been idled for 10-15 minutes?
This points to the powershift transmission not building enough charge pressure to fully engage the clutch packs while cold. Owners on this transmission design narrow it to two causes: a weak or worn transmission charging pump, or a suction-side leak, commonly an o-ring on the suction strainer riser tube. A field check: slightly overfill the transmission (briefly, don't run it long that way) and see if it goes into gear immediately on startup. If it does, suspect the suction side or pump rather than worn clutch discs. Metal in the drained fluid or the strainer means the transmission itself is breaking down, not just the pump.
What blade/hydraulic behavior do owners complain about most?
Inconsistent blade response: creep or drift when the blade is left raised, or lift/tilt/angle feeling soft and inconsistent between control movements. Owners trace this to worn cylinder seals or internal leakage, a tired control valve, and sloppy linkage between the levers and the valve bank on machines this age, where worn clevis pins and ball bushings let the linkage move on its own. Low or contaminated hydraulic fluid makes all of this worse and should be ruled out first. Because a drifting blade can settle unexpectedly, never work or reach under a raised, unsupported blade. Have your dealer verify cylinder holding and control-valve condition if drift shows up.
What undercarriage wear pattern should D3C II owners expect, especially on LGP/LGP-S units?
Bushing wear where the track engages the sprocket teeth is usually the first thing to go, and it ovals out well before the sprocket or idler look obviously worn. Check that spot specifically, not just shoe thickness. Front idler bearing failure shows up as a squeak and a noticeably hotter idler than its neighbors; on this size machine the idler/bearing assembly is normally exchanged as a unit through a dealer rather than rebuilt in the field. LGP and the extra-wide swamp configuration put more side load on the chain in rocky or uneven ground, so undercarriage life runs shorter than the same hours on a standard-gauge machine on flat ground. Watch for track tension pulled unusually tight on a machine for sale, that's a common trick to stop a worn, loose undercarriage from throwing a track during a test drive, not a sign of good condition.
Are there common electrical or gauge issues on D3C II-era machines?
Several dash 'sensor' complaints on machines from this era turn out not to be electrical at all. Some dash gauges, oil pressure in particular, are mechanical and run off a small tube from the engine block rather than a wire and electric sending unit. A cracked, kinked, or clogged line reads as a false low-pressure alarm even with good actual oil pressure. Confirm with a test gauge tapped directly into the block before condemning the engine. On the charging side, the 24V system is simple: alternator, regulator, starter, glow-plug relay, dash amp gauge. But original wiring on machines this age is a common source of intermittent charging complaints. Check grounds and connectors before replacing the alternator.
What should you check before buying a used D3C II?
Walk the undercarriage first. Look at bushing wear at the sprocket contact points, not just shoe thickness, and check idler and roller bore play. Be suspicious of track tension pulled unusually tight, a common trick to hide a worn chain during a short test drive. Start it cold if the seller allows it. Confirm which starting aid it has (glow plug or ether) and watch how long it takes to settle into gear; a machine needing 10+ minutes of idle before it will move is telling you the transmission charge pump or suction side is marginal. Run the blade through full lift, tilt, and angle and watch for drift or inconsistent response with the panel open and the engine off. Confirm the steering pedals release evenly with acceptable free play on both sides. Ask which configuration it is: standard, LGP, or the extra-wide LGP-S swamp variant, since ground pressure and undercarriage wear life differ between them. Because engine, steering, and transmission condition all affect safe operation, have your dealer verify compression, steering-clutch release, and transmission pressures before final purchase.

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

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