Caterpillarexcavator
Caterpillar 231D
Maintenance schedule, common problems & OEM parts breakdown
The Cat 231D is a 33-35 tonne class crawler hydraulic excavator built from 1989 to 1993, carrying factory serial prefixes 1NK (1989 start) and 5WJ (1991 start, coinciding with the LC variant). It runs a Cat 3208 or turbocharged 3208T V8 diesel rated around 200 hp (149 kW), a fully mechanical engine with a mechanical injection pump and no ECM or electronic diagnostics. Operating weight runs 33.6 to 35.5 tonnes (74,000 to 78,264 lb) depending on the standard or LC (long-carriage) undercarriage. Fuel tank capacity is 400 L (105.7 US gal), and the hydraulic system runs up to 4800 psi at 121 gpm. Cat offered the 231D with a choice of stick lengths and the standard or LC undercarriage and boom package; it replaced the Cat 229 in the excavator lineup.
The 231D paired the 225's upper structure, cab, and stick lineage with the heavier boom and undercarriage from the 235, giving Cat a mid-size machine with more digging force than the 225 without the cost of a full 235. Versus the 229 it replaced, factory changes added a bigger counterweight, more hydraulic horsepower, a redesigned upper frame, new stick options, a new one-piece boom, standard 2-speed travel, more drawbar pull, and a larger fuel tank. Cat retired the 231D nameplate without a direct successor: the mechanical 200-series family gave way to the electronically managed 300-series excavators (320/325/330) by the mid-1990s. In today's used and parts market, the 231D's simple mechanical fuel and engine systems appeal to owners who want a machine they can diagnose and rebuild without a laptop, and its shared design with the 225/235 family keeps common wear parts easy to source.
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 231D specifications
Engine
| Engine model | Cat 3208 diesel, V8 (some listings cite the turbocharged 3208T variant) |
| Cylinders / configuration | 8-cylinder V8, bore x stroke 114 x 127 mm (4.50 x 5.00 in) |
| Displacement | 10.4 L (634.7 cu in) |
| Power | 149 kW (200 hp) rated output (reported inconsistently as gross power in some places and net power in others) |
| Emissions tier | Not documented. Machine predates modern emissions-tier regulation (production era late 1980s to early 1990s). |
Weights
| Operating weight, standard undercarriage | approx. 35,200 kg (77,600 lb) |
| Operating weight, LC (long-carriage) variant | approx. 35,500 kg (78,264 lb) |
| Operating weight, typical range | 35.2-35.5 t (77,600-78,300 lb); a lower figure near 34,500 kg (76,000 lb) is reported for some serial ranges — varies by configuration/series |
| Ground pressure | 60 kPa (8.7 psi) on standard undercarriage; approx. 47 kPa (6.8 psi) on the wider LC undercarriage |
| Transport weight | Not separately published — use operating weight figures above |
Dimensions
| Transport length | approx. 10.8 m (35 ft 6 in) |
| Transport width (outside of tracks) | approx. 3.45-3.47 m (11 ft 4 in - 11 ft 5 in) |
| Transport height (top of cab) | approx. 3.38-3.48 m (11 ft 1 in - 11 ft 5 in) |
| Tail swing radius | 3.09-3.11 m (10.1-10.2 ft) standard undercarriage; 3.00-3.02 m (9.85-9.90 ft) on LC variant |
| Track shoe width | 815 mm (32.1 in), standard triple-grouser shoe |
| Ground clearance | 0.58-0.61 m (1.91-2.00 ft) |
| Undercarriage track gauge | 2.64-2.65 m (8.67-8.70 ft) |
| Configuration note | A narrower LC build (transport width 2.97 m, track shoe 600 mm) is reported for some units, conflicting with other figures — dimensions vary by configuration/series; verify against the machine serial plate. |
Performance
| Max digging depth, standard stick (2.9 m / 9 ft 6 in) | 6.94 m (22.77 ft) |
| Max digging depth, long stick (3.5 m / 11 ft 6 in) | 7.54-7.56 m (24.74-24.80 ft) |
| Max reach along ground, standard stick | 10.64-10.67 m (34.91-35.0 ft) |
| Max reach along ground, long stick | 11.20-11.22 m (36.75-36.80 ft) |
| Max cutting/loading height | approx. 10.08-10.36 m (33.1-34.0 ft) with standard stick; a long-stick LC max loading height of 7.16-7.41 m (23.5-24.3 ft) is also reported — labeling and figures vary by configuration/series and stick length |
| Max travel speed | 5.5-5.6 km/h (3.4-3.5 mph) |
| Drawbar pull | approx. 300 kN (67,443 lbf) |
| Swing speed | Not documented in available spec sheets |
| Gradeability | Not documented in available spec sheets |
Forces
| Bucket digging force | Not published in available spec sheets for this model |
| Stick/arm digging force | Not published in available spec sheets for this model (std vs long stick comparison not documented) |
Service capacities (summary)
| Fuel tank | 400 L (105.7 gal) |
| Hydraulic system | Pump flow rated 458 L/min (121 gal/min) at relief valve pressure 33,095 kPa (4,800 psi); hydraulic tank volume not separately published |
| Engine oil | Not documented for this machine installation in available spec sheets |
| Cooling system | Not documented for this machine installation in available spec sheets |
Values vary by configuration, region, and serial range — confirm against your machine before planning transport or lifts.
231D fluids & capacities
| System | Capacity | Recommended fluid |
|---|---|---|
| Engine crankcase (with filter) | Not published in available sources for this chassis/serial range — depends on the oil pan fitted to the 3208 V8; check the OMM lubricant chart or the engine tag for the exact fill quantity | Cat Diesel Engine Oil (Cat DEO); viscosity grade selected by ambient temperature per Cat's engine oil chart, from SAE 10W in cold climates up to SAE 40 or 15W-40 multigrade in warmer ranges |
| Cooling system | Not published in available sources for this model — refer to the OMM lubricant chart | Cat heavy-duty diesel engine antifreeze/coolant (pre-ELC generation, conventional glycol-based formulation), mixed per Cat's cold-weather protection chart; do not run straight water |
| Fuel tank | 400 L (105.7 US gal) | No. 2-D diesel fuel meeting Cat's fuel specification for the 3208 engine; use a winter-grade blend or fuel conditioner in cold climates to prevent gelling |
| Hydraulic system total | Not published in available sources — only pump flow (458 L/min, 121 US gpm) and main relief valve setting (33 095 kPa, 4800 psi) are documented for this model; total system oil volume not confirmed | Cat Hydraulic Oil is the primary factory fill; Cat TDTO (TO-4) drivetrain oil is listed as an accepted alternate when Cat Hydraulic Oil is not used, viscosity grade selected by ambient temperature |
| Hydraulic tank | Not published in available sources for this model — refer to the OMM lubricant chart | Same as hydraulic system: Cat Hydraulic Oil, or Cat TDTO (TO-4) as accepted alternate, viscosity by climate |
| Final drive (each) | Not published in available sources for this model — final drives in this size class typically hold only a small oil volume each; confirm against the OMM lubricant chart | Cat TDTO (TO-4) drivetrain oil, viscosity grade selected by ambient temperature; do not substitute EP-type gear oils, they attack the seals |
| Swing drive | Not published in available sources for this model — refer to the OMM lubricant chart | Cat TDTO (TO-4) drivetrain oil, same specification as the final drives |
| Pilot/other circuits | Not separately listed in available sources; the pilot circuit draws from the main hydraulic tank on this machine class | Same fluid as the main hydraulic system — Cat Hydraulic Oil or Cat TDTO (TO-4) |
| Grease (chassis pins, bushings, linkage, slew ring) | N/A — specification only, no fill volume | Cat Multipurpose Grease, moly-fortified, NLGI 2, for boom/stick/bucket linkage pins and bushings and the swing-ring gear; matches the fill used in an automatic lube system where equipped |
Capacities are refill values from factory literature — always fill to the dipstick/sight gauge, not the number.
Caterpillar 231D maintenance schedule
| Service interval | Tasks |
|---|---|
| Every 50 h |
|
| Every 250 h |
|
| Every 500 h |
|
| Every 1,000 h |
|
| Every 2,000 h |
|
| Every 4,000 h |
|
| Every 6,000 h |
|
Servicing the 231D beyond the schedule
Predictive Maintenance & Fluid Analysis
The 231D's Cat 3208T is fully mechanical with no ECM and no fault codes, so scheduled fluid sampling is the real early-warning system on this machine. Pull engine oil samples every 250 hours to catch turbocharger bearing wear or injection pump metal before it forces a rebuild. Sample hydraulic oil every 1000 hours; the 4800 psi, 121 gpm system concentrates contamination fast. Check fuel samples for water pulled into the 400 L tank on humid or wet sites.
Corrective & Common Repairs
The undercarriage is the 231D's known weak point: pairing the lighter 225-based frame with the heavier 235 boom and undercarriage concentrates wear on track rollers, idlers, and bushings under sustained digging loads. Swing bearing play and backlash in the final drives show up as hour counts climb. On the 3208T, turbocharger shaft wear and injection pump timing drift are the most common age-related failures. Catch these early with routine track-sag checks and bearing torque checks rather than running components to failure.
Overhaul & Rebuild Points
Most surviving 231Ds are now over 30 years old, so overhaul planning centers on the 3208T's fuel system: injection pump, injectors, and turbocharger wear together and are usually rebuilt as a set once timing or smoke complaints appear. Swing and final drive gear sets and bearings are the next major-wear items, followed by re-pinning and rebushing the boom, stick, and bucket linkage. Because the 231D pairs a 235-class undercarriage with a lighter 225-based frame, inspect the carbody and upper frame welds for cracking before a full driveline rebuild.
Seasonal & Environment Servicing
Cold starts are manual on the 3208T: no glow-plug controller or block heater interlock, so plan on ether and a fully charged battery bank below freezing. Watch the 400 L fuel tank for winter fuel gelling and drain the water separator daily in freeze-thaw weather. In hot, dusty digging shorten the engine oil interval toward 150 hours and clean the radiator and oil cooler cores weekly. On soft or wet ground, the LC undercarriage's wider footprint and lower ground pressure holds up better than the standard configuration.
231D common service parts
| Part number | Part | Notes | |
|---|---|---|---|
| 6V-7615 | Film-Identification-On Fuel Filter | Fuel system service | Check fitment → |
| 8C-8899 | Film-Identification-On Engine Oil Filter | Lubrication service | Check fitment → |
| 8T-5913 | Screen-Filter | Scheduled service item | Check fitment → |
Always confirm against your machine's serial number — cross-check any part in Heavy Parts AI before ordering.
231D attachments & work tools
Buckets
Factory GP bucket capacity for the 231D runs about 1.2 to 1.59 m³ (1.6 to 2.1 cu yd) at roughly 1.675 m (66 in) width; a few equipped units run buckets closer to 2.0 m³, so treat exact capacity as varying by configuration/series and stick length. Buckets mount pin-on directly to the stick and bucket linkage — this era of machine predates factory quick-coupler fitment, so confirm pin diameter and link spacing against the actual stick before ordering a replacement. Rock/HD buckets for this weight class run narrower and lower-capacity than the GP figure above on the same stick, per standard excavator bucket-sizing practice.
Hydraulic hammers
Operating weight for the 231D falls in the roughly 34-35.5 tonne (75,000-78,000 lb) class depending on standard vs LC configuration, which lines up with the mid/heavy breaker bracket sized for 30-40 tonne carriers — breaker service weight in the 3,000-4,500 kg range, roughly a 9,000-12,000 ft-lb impact-energy class. Machine hydraulics back this up: relief-valve setting is about 4800 psi (331 bar) with combined pump flow near 121 gpm (458 L/min) across the two main pumps, enough to feed one hammer circuit at this size.
Quick couplers
Factory fitment on the 231D is pin-on; hydraulic pin-grabber quick couplers sized for this machine's stick and bucket pins do exist on the used/attachment market, including variable-center pin-grabber designs, which confirms the pin spacing sits in a standard heavy pin-grabber size range for this weight class. Expect a hydraulic pin-grabber type rather than a manual/mechanical coupler given the machine's size.
Thumbs/grapples
No OEM thumb or grapple kit is documented specifically for the 231D. A hydraulic pin-on thumb mounted at the bucket pin is the typical retrofit for excavators this size, but confirm bucket-pin diameter and stick-side clearance with your attachment supplier before ordering — not verified for this exact model, check locally.
Rippers
No factory or aftermarket ripper tied specifically to the 231D turned up in available sources. Excavators in this weight class commonly run a single-shank pin-on ripper for rock or frost work, but shank pin size and stick clearance are not documented for this exact model — verify with your dealer or attachment supplier before ordering.
Hydraulic-kit notes
The 231D (built roughly 1989-1993) is a mechanically controlled machine that predates Cat's later selectable medium-pressure/high-flow auxiliary circuit branding; running a hammer, grapple, or other powered tool means field-installed boom-and-stick piping (pressure and return lines routed to the stick end) rather than a factory multi-mode switch. Size any added circuit to the machine's relief pressure (about 4800 psi / 331 bar) and available combined pump flow (about 121 gpm / 458 L/min from the two main pumps).
All 231D assemblies by section
Every catalogued assembly group for the Caterpillar 231D. Open an assembly to preview the parts inside — full OEM part numbers are available in Heavy Parts AI.
Air Inlet And Exhaust System
3n2915 Adapter Gp-Air Cleaner
| 3N***15 | Adapter Group-Air Cleaner; Air Cleaner Adapter Group | 1 |
7e5705 Air Cleaner Gp
| 7E***05 | Air Cleaner Group | 1 |
7w2878 Cartridge Gp-Turbocharger*R
| 7W***78 | Cartridge Group-Turbocharger | 1 |
7e5673 Extension Gp-Exhaust
| 7E***73 | Extension Group-Exhaust | 1 |
7e5704 Lines Gp-Air
| 7E***04 | Lines Group-Air | 1 |
4e6216 Lines Gp-Air
| 4E***16 | Lines Group-Air | 1 |
9n6755 Lines Gp-Air
| 9N***55 | Lines Group-Air; Air Lines Group | 1 |
7n8464 Lines Gp-Pcv
| 7N***64 | Lines Group-Pcv; Positive Crankcase Ventilation Lines Gp. | 1 |
9n3612 Manifold Gp-Exhaust
| 9N***12 | Manifold Group-Exhaust; Exhaust Manifold Group | 1 |
9n6619 Manifold Gp-Inlet
| 9N***19 | Manifold Group-Inlet; Inlet Manifold Group | 1 |
7e4797 Muffler Gp
| 7E***97 | Muffler Group | 1 |
4h5076 Precleaner Gp
| 4H***76 | Precleaner Group | 1 |
5l7942 Precleaner Gp
| 5L***42 | Precleaner Group; -Air Cleaner | 1 |
9s0603 Prescreener Gp
| 9S***03 | Prescreener Group | 1 |
7w2874 Turbocharger Gp*R
| 7W***74 | Turbocharger Group | 1 |
2w2589 Turbocharger Gp
| 2W***89 | Turbocharger Group | 1 |
Basic Engine
7e6160 Belt Tightener Gp
| 7E***60 | Belt Tightener Group | 1 |
9n6609 Camshaft Gp-Single
| 9N***09 | Camshaft Group | 1 |
9l6065 Cover Gp-Cylinder Block
| 9L***65 | Cover Group-Cylinder Block; Cylinder Block Cover Group | 1 |
9n0560 Cover Gp-Front Housing
| 9N***60 | Cover Group-Front Housing; Front Housing Cover Group | 1 |
9n0730 Cover Gp-Valve Mechanism
| 9N***30 | Cover Group-Valve Mechanism; Valve Mechanism Cover Group | 1 |
4w6972 Cover Gp-Valve Mechanism
| 4W***72 | Cover Group-Valve Mechanism | 1 |
4w6968 Cover Gp-Valve Mechanism
| 4W***68 | Cover Group-Valve Mechanism | 1 |
Crankshaft Bearing Replacements
| 8N***71 | .51 mm--Front Main--Non-Grooved | 1 |
| 8N***72 | .51 mm--Front Main--Non-Grooved | 1 |
| 8N***73 | 0 Standard--Front Main--Non-Grooved; 0 (Standard)-Front Main-Non-Grooved | 1 |
2w0085 Crankshaft Gp*R
| 2W***85 | Crankshaft Group | 1 |
9n6222 Crankshaft Gp
| 9N***22 | Crankshaft Group | 1 |
7e0036 Cylinder Block As
| 7E***36 | Cylinder Block As | 1 |
9n6356 Cylinder Block Gp*R
| 9N***56 | Cylinder Block Group; Cylinder Block Group | 1 |
7e4850 Cylinder Block Gp
| 7E***50 | Cylinder Block Group | 1 |
7c3807 Cylinder Head As
| 7C***07 | Cylinder Head As | 1 |
7c2296 Cylinder Head As
| 7C***96 | Cylinder Head As | 1 |
1w2282 Cylinder Head Gp*R
| 1W***82 | Cylinder Head Group | 1 |
9n3600 Cylinder Head Gp
| 9N***00 | Cylinder Head Group; Cylinder Head Group | 1 |
9n5590 Damper & Pulley Gp
| 9N***90 | Damper & Pulley Group; Pulley And Damper Group | 1 |
7e5800 Drive Gp-Fan
| 7E***00 | Drive Group-Fan | 1 |
4n8850 Flywheel Gp
| 4N***50 | Flywheel Group; Flywheel Group | 1 |
7c6032 Housing Gp-Flywheel
| 7C***32 | Housing Group-Flywheel | 1 |
7w5447 Housing Gp-Front
| 7W***47 | Housing Group-Front; Front Housing Group | 1 |
7e4113 Lifting Gp-Engine
| 7E***13 | Lifting Group-Engine | 1 |
7e8596 Pan Gp-Oil
| 7E***96 | Pan Group-Oil | 1 |
9n6435 Piston & Rod Gp
| 9N***35 | Piston & Rod Group | 1 |
2w4841 Piston Gp
| 2W***41 | Piston Group | 1 |
7e5808 Pulley Gp
| 7E***08 | Pulley Group | 1 |
7e6185 Pulley Gp-Fan
| 0S***90 | Bolt; (3/8-16x2in)(Clip Thru Spacer To Bracket As) | 6 |
| 7E***99 | V-Belt Set; (Includes 3 Belts) | 1 |
| 7E***53 | Pulley-Auxiliary; Pulley Auxiliary | 1 |
9n0542 Seal Gp-Crankshaft
| 9N***42 | Seal Group-Crankshaft; Crankshaft Seal Group | 1 |
4p2630 Support Gp-Engine
| 4P***30 | Support Group-Engine | 1 |
9n6428 Support Gp-Engine
| 9N***28 | Support Group-Engine | 1 |
7c6353 Valve As-Pcv
| 7C***53 | Valve As-Pcv | 1 |
9n6617 Valve Mechanism Gp
| 9N***17 | Valve Mechanism Group; Valve Mechanism Group | 1 |
Cooling System
1w4912 Cooler Gp-Engine Oil
| 1W***12 | Cooler Group-Engine Oil | 1 |
9n3593 Cooler Gp-Engine Oil
| 9N***93 | Cooler Group-Engine Oil | 1 |
4p4760 Cooler Gp-Hydraulic Oil
| 4P***60 | Cooler Group-Hydraulic Oil | 1 |
6c7670 Cooling Ar
| 4N***49 | Spacer (.43 mm Thick) | 1 |
| 4N***50 | Spacer (.44 mm Thick) | 1 |
| 4N***51 | Spacer (.45 mm Thick) | 1 |
7e5796 Fan Gp-Suction
| 7E***96 | Fan Group-Suction | 1 |
6i1714 Fan Gp-Suction
| 6I***14 | Fan Group-Suction | 1 |
7w4464 Lines Gp-Water
| 7W***64 | Lines Group-Water | 1 |
9n3654 Pump Gp-Water
| 9N***54 | Pump Group-Water; Water Pump Group | 1 |
4p6535 Radiator Gp
| 4P***35 | Radiator Group | 1 |
7e7571 Radiator Gp
| 7E***71 | Radiator Group | 1 |
Engine Arrangement
4p0673 Engine Ar-Part 2 Of 2
| 1N***54 | Pump Group-Engine Oil | 1 |
| 2W***89 | Turbocharger Group | 1 |
| 4N***14 | Pump Group-Fuel Priming; Fuel Priming Pump Group | 1 |
4p0673 Engine Ar-Part 1 Of 2
| 3N***15 | Adapter Group-Air Cleaner; Air Cleaner Adapter Group | 1 |
| 4N***68 | Filter Group-Fuel; Fuel Filter Group | 1 |
| 4N***50 | Flywheel Group; Flywheel Group | 1 |
Frame And Body
8r6608 Carbody Gp
| 8R***08 | Carbody Group | 1 |
8r6541 Carbody Gp
| 8R***41 | Carbody Group | 1 |
8r9736 Counterweight Gp
| 8R***36 | Counterweight Group | 1 |
8r5812 Counterweight Gp
| 8R***12 | Counterweight Group; Film-Instruction-Lift | 1 |
6c7162 Counterweight Gp
| 6C***62 | Counterweight Group | 1 |
| 8R***36 | Counterweight Group | 1 |
4e6179 Frame Ar-Undercarriage
| 4E***79 | Frame Ar-Undercarriage | 1 |
| 4E***80 | Lines Group-Track Motor | 1 |
| 6C***00 | Frame Group-Track Roller | 1 |
4e5905 Frame Ar-Undercarriage
| 2V***50 | Idler Group-Front; Front Idler Group | 1 |
| 3T***06 | Roller Group-Track Carrier | 4 |
| 3V***92 | Guard Group-Track Guide | 2 |
4e5907 Frame Ar-Undercarriage
| 4E***56 | Guard Group-Track Motor | 1 |
| 4E***07 | Frame Ar-Undercarriage | 1 |
| 4E***08 | Frame Group-Track Roller | 1 |
3v9440 Frame Gp-Track Roller
| 3V***40 | Frame Group-Track Roller | 1 |
6c2700 Frame Gp-Track Roller
| 6C***00 | Frame Group-Track Roller | 1 |
4e5906 Frame Gp-Track Roller
| 1S***92 | Dowel | 4 |
| 3V***31 | Bracket-Carriage Roller | 4 |
| 4E***06 | Frame Group-Track Roller | 1 |
4e5908 Frame Gp-Track Roller
| 4E***08 | Frame Group-Track Roller | 1 |
4e4474 Frame Gp-Upper
| 4E***74 | Frame Group-Upper | 1 |
8r6410 Gear & Bearing Gp
| 8R***10 | Gear & Bearing Group | 1 |
8r6205 Gear & Bearing Gp
| 8K***85 | Seal-Bottom | 2 |
| 8R***93 | Bearing & Gear Group-Fag | 1 |
| 8R***03 | Bearing & Gear Group-Skf | 1 |
7v4303 Guard Gp-Bottom
| 2V***57 | Guard Group-Bottom; Bottom Guard Group | 1 |
| 3V***05 | Guard Group-Lines; Pilot Lines Guard Group | 1 |
| 7V***03 | Guard Group-Bottom | 1 |
6c1892 Guard Gp-Bottom
| 6C***92 | Guard Group-Bottom | 1 |
2v0357 Guard Gp-Bottom
| 2V***57 | Guard Group-Bottom; Bottom Guard Group | 1 |
3v3405 Guard Gp-Lines
| 3V***05 | Guard Group-Lines; Pilot Lines Guard Group | 1 |
6c3425 Guard Gp-Lines
| 6C***25 | Guard Group-Lines; Guard Gp-Pilot Lines | 1 |
2v8445 Guard Gp-Overhead-Part 1 Of 2
| 2V***45 | Guard Group-Overhead; Overhead Guard Group | 1 |
2v8445 Guard Gp-Overhead-Part 2 Of 2
| 2V***45 | Guard Group-Overhead; Overhead Guard Group | 1 |
8k2622 Guard Gp-Recoil Mechanism
| 8K***22 | Guard Group-Recoil Mechanism | 1 |
6c2705 Guard Gp-Recoil Mechanism
| 6C***05 | Guard Group-Recoil Mechanism | 1 |
8k4123 Guard Gp-Swivel
| 8K***23 | Guard Group-Swivel | 1 |
6w2488 Guard Gp-Track Guide
| 6W***88 | Guard Group-Track Guide | 1 |
3v4892 Guard Gp-Track Guide
| 3V***92 | Guard Group-Track Guide | 1 |
4c2011 Guard Gp-Track Guide
| 4C***11 | Guard Group-Track Guide | 1 |
4e5855 Guard Gp-Track Motor
| 1A***35 | Bolt 2.00 In. (5.08 cm) Long | 5 |
| 3V***95 | Bracket As (Lh) | 1 |
| 3V***96 | Bracket As (Rh) | 1 |
4e5856 Guard Gp-Track Motor
| 1A***35 | Bolt 2.00 In. (5.08 cm) Long | 5 |
| 3V***95 | Bracket As (Lh) | 1 |
| 3V***96 | Bracket As (Rh) | 1 |
9c2616 Guard Gp-Track Motor
| 9C***16 | Guard Group-Track Motor | 1 |
6c2720 Guard Gp-Track Motor
| 3V***95 | Bracket As (Lh) | 1 |
| 3V***96 | Bracket As (Rh) | 1 |
| 4L***54 | Capscrew; (3/8-16x21 In) (Gd8) (Hex Hd) (4-Roller) | 4 |
4e4472 Hood & Guard Gp-Part 2 Of 2
| 4E***72 | Hood & Guard Group | 1 |
4e4472 Hood & Guard Gp-Part 1 Of 2
| 4E***72 | Hood & Guard Group | 1 |
8k2623 Idler Gp-Front
| 8K***23 | Idler Group-Front | 1 |
2v8641 Idler Gp-Front
| 2V***41 | Idler Group-Front | 1 |
2v1950 Idler Gp-Front
| 2V***50 | Idler Group-Front; Front Idler Group | 1 |
5n4583 Link As-Track
| 5N***83 | Link As-Track | 1 |
8e4714 Link As-Track
| 8E***14 | Link As-Track | 1 |
6c3861 Platform Gp
| 6C***61 | Platform Group | 1 |
3t3206 Track Roller Gp
| 3T***06 | Roller Group-Track Carrier | 1 |
8e4613 Track Roller Gp-Single Flange
| 8E***13 | Roller Group-Track-Single Flange; Track Roller Gp-Single Flange | 1 |
8k3326 Spring Gp-Recoil
| 8K***26 | Spring Group-Recoil | 1 |
6y8658 Track Gp
| 1S***59 | Bolt 2.15 In. (54.61 mm) Long | 216 |
| 1S***60 | Nut-Track; (3/4-16-Thd) | 216 |
| 1V***57 | Shoe-Grouser Track | 54 |
8e5856 Track Gp
| 1S***59 | Bolt 2.15 In. (54.61 mm) Long | 216 |
| 1S***60 | Nut-Track; (3/4-16-Thd) | 216 |
| 8E***17 | Link As-Track | 1 |
9w1916 Track Gp
| 1S***59 | Bolt 2.15 In. (54.61 mm) Long | 188 |
| 1S***60 | Nut-Track; (3/4-16-Thd) | 188 |
| 5N***83 | Link As-Track | 1 |
5n4585 Track Gp
| 1S***59 | Bolt 2.15 In. (54.61 mm) Long | 188 |
| 1S***60 | Nut-Track; (3/4-16-Thd) | 188 |
| 5N***83 | Link As-Track | 1 |
8e5457 Track Gp
| 1S***59 | Bolt 2.15 In. (54.61 mm) Long | 216 |
| 1S***60 | Nut-Track; (3/4-16-Thd) | 216 |
| 8E***14 | Link As-Track | 1 |
3t4292 Track Gp
| 1S***59 | Bolt 2.15 In. (54.61 mm) Long | 188 |
| 1S***60 | Nut-Track; (3/4-16-Thd) | 188 |
| 1V***57 | Shoe-Grouser Track | 47 |
6c1871 Walkway Gp
| 6C***71 | Walkway Group | 1 |
Fuel System
4e4705 Control Ar-Governor
| 1V***33 | Diode Assem. | 1 |
| 4E***04 | Control Group-Governor | 1 |
| 4E***05 | Control Ar-Governor | 1 |
7x1902 Control Gp-Electronic
| 7X***02 | Control Group-Electronic | 1 |
4e4704 Control Gp-Governor-Part 2 Of 3
| 4E***04 | Control Group-Governor | 1 |
4e4704 Control Gp-Governor-Part 3 Of 3
| 4E***04 | Control Group-Governor | 1 |
9c1720 Control Gp-Governor
| 9C***20 | Control Group-Governor | 1 |
4e4704 Control Gp-Governor-Part 1 Of 3
| 4E***04 | Control Group-Governor | 1 |
9l6743 Control Gp-Governor
| 9L***43 | Control Group-Governor; Governor And Control Group | 1 |
4e3922 Cylinder Gp-Engine Speed Actuator
| 4E***22 | Cylinder Group-Eng Speed Actuator | 1 |
6c5532 Cylinder Gp-Engine Speed Actuator
| 6C***32 | Cylinder Group-Eng Speed Actuator | 1 |
7c7670 Drive Gp-Governor
| 7C***70 | Drive Group-Governor | 1 |
9l6925 Fastener Gp-Fuel Pump Housing
| 9L***25 | Fastener Group-Fuel Pump Housing; Fuel System Fastener Group | 1 |
4n5868 Filter Gp-Fuel
| 4N***68 | Filter Group-Fuel; Fuel Filter Group | 1 |
6c5855 Lines Gp-Fuel
| 6C***55 | Lines Group-Fuel | 1 |
7e4114 Lines Gp-Fuel Filter
| 7E***14 | Lines Group-Fuel Filter | 1 |
9y0300 Lines Gp-Fuel Injection
| 9Y***00 | Lines Group-Fuel Injection | 1 |
7w1998 Lines Gp-Fuel Injection
| 7W***98 | Lines Group-Fuel Injection; Fuel Injection Lines Group | 1 |
9y0301 Lines Gp-Fuel Injection
| 9Y***01 | Lines Group-Fuel Injection | 1 |
4n4314 Pump Gp-Fuel Priming
| 4N***14 | Pump Group-Fuel Priming; Fuel Priming Pump Group | 1 |
7c8928 Governor & Fuel Injection Pump Gp-Part 3 Of 5
| 7C***28 | Pump Group-Gov & Fuel Inj | 1 |
7c8928 Governor & Fuel Injection Pump Gp-Part 1 Of 5
| 7C***28 | Pump Group-Gov & Fuel Inj | 1 |
7c8972 Governor & Fuel Injection Pump Gp*R
| 7C***72 | Pump Group-Gov & Fuel Inj | 1 |
7e3988 Governor & Fuel Injection Pump Gp
| 7E***88 | Pump Group-Gov & Fuel Inj | 1 |
7c8928 Governor & Fuel Injection Pump Gp-Part 4 Of 5
| 7C***28 | Pump Group-Gov & Fuel Inj | 1 |
7c8973 Governor & Fuel Injection Pump Gp
| 7C***73 | Pump Group-Gov & Fuel Inj | 1 |
7c8928 Governor & Fuel Injection Pump Gp-Part 2 Of 5
| 7C***28 | Pump Group-Gov & Fuel Inj | 1 |
7e3987 Governor & Fuel Injection Pump Gp
| 7E***87 | Pump Group-Gov & Fuel Inj; Governor & Fuel Injection Pump Gp | 1 |
7c8928 Governor & Fuel Injection Pump Gp-Part 5 Of 5
| 7C***28 | Pump Group-Gov & Fuel Inj | 1 |
6c3020 Pump Gp-Refueling
| 6C***20 | Pump Group-Refueling | 1 |
5c0746 Strainer Gp
| 5C***46 | Strainer Group | 1 |
5c6108 Switch As
| 5C***08 | Switch As; (Fuel Tank Shut Off) | 1 |
6c3004 Tank Gp-Fuel
| 6C***04 | Tank Group-Fuel | 1 |
6n0509 Torque Control Gp
| 6N***09 | Torque Control Group | 1 |
9t1725 Valve Gp-Check
| 9T***25 | Valve Group-Check | 1 |
6t8208 Valve Gp-Solenoid
| 6T***08 | Valve Group-Solenoid | 1 |
Hydraulic System
6e2562 Valve Gp-Check-Pilot Operated
| 6E***62 | Valve Group-Check | 1 |
9t2348 Valve Gp-Check-Pilot Operated
| 9T***48 | Valve Group-Check | 1 |
6e0829 Actuator Gp
| 6E***29 | Actuator Group | 1 |
6e0830 Actuator Gp
| 6E***30 | Actuator Group | 1 |
9j3954 Bypass Gp-Filter
| 9J***54 | Bypass Group-Filter; -Hydraulic Oil | 1 |
6c5535 Control Gp-Hydraulic-Part 1 Of 2
| 6C***35 | Control Group-Hydraulic | 1 |
6c5535 Control Gp-Hydraulic-Part 2 Of 2
| 6C***35 | Control Group-Hydraulic | 1 |
9c9234 Control Gp-Hydraulic
| 9C***34 | Control Group-Hydraulic; Control Gp-Hydraulic Hammer | 1 |
8v8315 Control Gp-Pilot Operated Hydraulic-Part 3 Of 8
| 8V***15 | Control Group-Pilot Operated Hydraulic; Pilot Operated Hydraulic Control Group | 1 |
8v8315 Control Gp-Pilot Operated Hydraulic-Part 5 Of 8
| 8V***15 | Control Group-Pilot Operated Hydraulic; Pilot Operated Hydraulic Control Group | 1 |
8v8315 Control Gp-Pilot Operated Hydraulic-Part 2 Of 8
| 8V***15 | Control Group-Pilot Operated Hydraulic; Pilot Operated Hydraulic Control Group | 1 |
8v8315 Control Gp-Pilot Operated Hydraulic-Part 7 Of 8
| 8V***15 | Control Group-Pilot Operated Hydraulic; Pilot Operated Hydraulic Control Group | 1 |
8v8315 Control Gp-Pilot Operated Hydraulic-Part 8 Of 8
| 8V***15 | Control Group-Pilot Operated Hydraulic; Pilot Operated Hydraulic Control Group | 1 |
8v8315 Control Gp-Pilot Operated Hydraulic-Part 1 Of 8
| 8V***15 | Control Group-Pilot Operated Hydraulic; Pilot Operated Hydraulic Control Group | 1 |
8v8315 Control Gp-Pilot Operated Hydraulic-Part 4 Of 8
| 8V***15 | Control Group-Pilot Operated Hydraulic; Pilot Operated Hydraulic Control Group | 1 |
8v8315 Control Gp-Pilot Operated Hydraulic-Part 6 Of 8
| 8V***15 | Control Group-Pilot Operated Hydraulic; Pilot Operated Hydraulic Control Group | 1 |
8r6520 Control Gp-Pressure
| 8R***20 | Control Group-Pressure | 1 |
6w3988 Coupling Gp-Pump
| 6W***88 | Coupling Group-Pump | 1 |
6e6008 Cylinder Gp(Changes 00,01)
| 6E***08 | Cylinder Group; Cylinder Gp-Stick | 1 |
9t9371 Cylinder Gp-Boom (Chg. 03-06)
| 9T***71 | Cylinder Group-Boom | 1 |
6e5021 Cylinder Gp-Bucket (Change 01, 02)
| 6E***21 | Cylinder Group-Bucket | 1 |
9t9514 Cylinder Gp-Bucket (Chg. 08)
| 9T***14 | Cylinder Group-Bucket | 1 |
9t9483 Cylinder Gp-Stick (Chg. 00)
| 9T***83 | Cylinder Group-Stick | 1 |
8j7390 Filter Gp
| 8J***90 | Filter Group; (Pilot System Oil Filter) | 1 |
6c0083 Filter Gp
| 6C***83 | Filter Group | 1 |
9j3952 Filter Gp-External
| 9J***52 | Filter Group-External; -Hydraulic | 1 |
9j1212 Filter Gp-Oil
| 9J***12 | Filter Group-Oil; -Hydraulic | 1 |
9t3704 Head Gp-Pump
| 9T***04 | Head Group-Pump | 1 |
6c5710 Installation Ar-Hammer
| 6C***61 | Lines Group-Hydraulic | 1 |
| 6C***35 | Control Group-Hydraulic | 1 |
| 6C***90 | Lines Group-Hydraulic | 1 |
6c4470 Installation Ar
| 6C***70 | Installation Ar | 1 |
| 6C***71 | Lines Group-Hydraulic | 1 |
| 6C***72 | Lines Group-Hammer | 1 |
6c4473 Installation Ar
| 6C***73 | Installation Ar | 1 |
| 6C***74 | Lines Group-Hydraulic | 1 |
| 6C***75 | Lines Group-Hydraulic | 1 |
8r8777 Installation Ar-Hydraulic Hammer
| 6C***93 | Lines Group-Hydraulic Stick | 1 |
| 6C***59 | Lines Group-Hydraulic | 1 |
| 8R***77 | Installation Ar-Hydraulic Hammer | 1 |
8r6828 Lines Ar-Boom Check Valve
| 8R***98 | Lines Group-Boom Check Valve | 1 |
| 8R***28 | Lines Ar-Boom Check Valve | 1 |
| 8R***29 | Lines Group-Boom Check Valve | 1 |
9u2755 Lines Gp-Boom-Part 1 Of 2
| 9U***55 | Lines Group-Boom | 1 |
6c4064 Lines Gp-Boom
| 6C***64 | Lines Group-Boom | 1 |
6c3015 Lines Gp-Boom
| 6C***15 | Lines Group-Boom | 1 |
9u2755 Lines Gp-Boom-Part 2 Of 2
| 9U***55 | Lines Group-Boom | 1 |
8r6829 Lines Gp-Boom Check Valve-Part 2 Of 2
| 8R***29 | Lines Group-Boom Check Valve | 1 |
9u2754 Lines Ar-Boom Check Valve
| 8R***98 | Lines Group-Boom Check Valve | 1 |
| 9U***54 | Lines Group-Boom Check Valve | 1 |
| 9U***55 | Lines Group-Boom | 1 |
8r6829 Lines Gp-Boom Check Valve-Part 1 Of 2
| 8R***29 | Lines Group-Boom Check Valve | 1 |
8r6598 Lines Gp-Boom Check Valve
| 8R***98 | Lines Group-Boom Check Valve | 1 |
8r6525 Lines Gp-Boom Cylinder
| 8R***25 | Lines Group-Boom Cylinder | 1 |
8r9450 Lines Gp-Check Valve-Part 2 Of 2
| 8R***50 | Lines Group-Check Valve | 1 |
6c5028 Lines Gp-Check Valve-Part 1 Of 2
| 6C***28 | Lines Group-Check Valve | 1 |
6c5028 Lines Gp-Check Valve-Part 2 Of 2
| 6C***28 | Lines Group-Check Valve | 1 |
8r9450 Lines Gp-Check Valve-Part 1 Of 2
| 8R***50 | Lines Group-Check Valve | 1 |
8r4925 Lines Gp-Front-Part 1 Of 2
| 8R***25 | Lines Group-Front | 1 |
8r4925 Lines Gp-Front-Part 2 Of 2
| 8R***25 | Lines Group-Front | 1 |
6c4301 Lines Gp-Grease
| 6C***01 | Lines Group-Grease | 1 |
6c3016 Lines Gp-Grease
| 6C***16 | Lines Group-Grease | 1 |
6c4472 Lines Gp-Hammer
| 6C***72 | Lines Group-Hammer | 1 |
6c5359 Lines Gp-Hydraulic
| 6C***59 | Lines Group-Hydraulic | 1 |
6c4475 Lines Gp-Hydraulic
| 6C***75 | Lines Group-Hydraulic | 1 |
6c4471 Lines Gp-Hydraulic
| 6C***71 | Lines Group-Hydraulic | 1 |
6c5690 Lines Gp-Hydraulic
| 6C***90 | Lines Group-Hydraulic | 1 |
6c5361 Lines Gp-Hydraulic
| 6C***61 | Lines Group-Hydraulic | 1 |
6c4474 Lines Gp-Hydraulic
| 6C***74 | Lines Group-Hydraulic | 1 |
6c0893 Lines Gp-Hydraulic Stick-Hammer
| 6C***93 | Lines Group-Hydraulic Stick | 1 |
3v5332 Lines Gp-Pilot-Part 2 Of 3
| 3V***32 | Lines Group-Pilot | 1 |
3v5332 Lines Gp-Pilot-Part 1 Of 3
| 3V***32 | Lines Group-Pilot | 1 |
3v5332 Lines Gp-Pilot-Part 3 Of 3
| 3V***32 | Lines Group-Pilot | 1 |
4e4469 Lines Gp-Pump-Part 2 Of 4
| 4E***69 | Lines Group-Pump | 1 |
4e4469 Lines Gp-Pump-Part 4 Of 4
| 4E***69 | Lines Group-Pump | 1 |
4e4469 Lines Gp-Pump-Part 1 Of 4
| 4E***69 | Lines Group-Pump | 1 |
4e4469 Lines Gp-Pump-Part 3 Of 4
| 4E***69 | Lines Group-Pump | 1 |
4e5931 Lines Gp-Return & Filter-Part 2 Of 2
| 4E***31 | Lines Group-Return & Filter | 1 |
4e5931 Lines Gp-Return & Filter-Part 1 Of 2
| 4E***31 | Lines Group-Return & Filter | 1 |
6c4306 Lines Gp-Stick
| 6C***06 | Lines Group-Stick | 1 |
8r8627 Lines Gp-Stick
| 8R***27 | Lines Group-Stick | 1 |
8r8628 Lines Gp-Stick
| 8R***28 | Lines Group-Stick | 1 |
8r5894 Lines Gp-Swing Motor
| 8R***94 | Lines Group-Swing Motor | 1 |
4e5918 Lines Gp-Track Motor-Part 3 Of 3
| 4E***18 | Lines Group-Track Motor | 1 |
4e6181 Lines Gp-Track Motor-Part 2 Of 3
| 4E***81 | Lines Group-Track Motor | 1 |
4e5919 Lines Gp-Track Motor-Part 1 Of 3
| 4E***19 | Lines Group-Track Motor | 1 |
4e6181 Lines Gp-Track Motor-Part 1 Of 3
| 4E***81 | Lines Group-Track Motor | 1 |
4e6180 Lines Gp-Track Motor-Part 3 Of 3
| 4E***80 | Lines Group-Track Motor | 1 |
4e5919 Lines Gp-Track Motor-Part 3 Of 3
| 4E***19 | Lines Group-Track Motor | 1 |
4e6180 Lines Gp-Track Motor-Part 2 Of 3
| 4E***80 | Lines Group-Track Motor | 1 |
4e5918 Lines Gp-Track Motor-Part 2 Of 3
| 4E***18 | Lines Group-Track Motor | 1 |
4e5918 Lines Gp-Track Motor-Part 1 Of 3
| 4E***18 | Lines Group-Track Motor | 1 |
4e5919 Lines Gp-Track Motor-Part 2 Of 3
| 4E***19 | Lines Group-Track Motor | 1 |
4e6181 Lines Gp-Track Motor-Part 3 Of 3
| 4E***81 | Lines Group-Track Motor | 1 |
4e6180 Lines Gp-Track Motor-Part 1 Of 3
| 4E***80 | Lines Group-Track Motor | 1 |
9t9347 Motor Gp-Piston (Link)
| 9T***47 | Motor Group-Piston | 1 |
9t1208 Motor Gp-Piston-Link
| 9T***08 | Motor Group-Piston-Link | 1 |
6c1489 Pump & Mounting Gp
| 6C***89 | Pump & Mounting Group | 1 |
4e6199 Pump & Mounting Gp
| 4E***99 | Pump & Mounting Group | 1 |
9t3712 Pump Gp-Double-Piston (Link)
| 9T***12 | Pump Group-Double-Piston | 1 |
6c2065 Pump Gp-Gear
| 6C***65 | Pump Group-Gear | 1 |
6c1972 Pump Gp-Gear
| 6C***72 | Pump Group-Gear | 1 |
9t9349 Pump Gp-Piston
| 9T***49 | Pump Group-Piston | 1 |
6e0458 Rotating Gp
| 6E***58 | Rotating Group | 1 |
6e1700 Rotating Gp-Motor
| 6E***00 | Rotating Group-Motor | 1 |
9t3870 Rotating Gp-Pump
| 9T***70 | Rotating Group-Pump | 1 |
9t3714 Rotating Gp-Pump
| 9T***14 | Rotating Group-Pump | 1 |
9t4221 Shaft Gp
| 9T***21 | Shaft Group | 1 |
9t4222 Shaft Gp-Stub
| 9T***22 | Shaft Group-Stub | 1 |
4e6197 Support Gp-Valve & Filter
| 4E***97 | Support Group-Valve & Filter | 1 |
2g3970 Switch & Handle Gp
| 2G***70 | Switch & Handle Group | 1 |
9t9397 Swivel Gp
| 9T***97 | Swivel Group | 1 |
9t1950 Tank Gp-Hydraulic
| 9T***50 | Tank Group-Hydraulic | 1 |
4d0487 Valve As-Check
| 4D***87 | Valve As-Check; -Air Supply-Primary Air Tank-Service Brake Control | 1 |
6e2175 Valve Gp
| 6E***75 | Valve Group | 1 |
9t0133 Valve Gp-Boom Lowering
| 9T***33 | Valve Group; (Basic) | 1 |
9t3767 Valve Gp
| 9T***67 | Valve Group | 1 |
6c7207 Valve Gp
| 6C***07 | Valve Group | 1 |
9t1745 Valve Gp
| 9T***45 | Valve Group | 1 |
6e4923 Valve Gp
| 6E***23 | Valve Group | 1 |
6e4924 Valve Gp
| 6E***24 | Valve Group | 1 |
6e4735 Valve Gp
| 6E***35 | Valve Group | 1 |
8j2601 Valve Gp-Brake
| 8J***01 | Valve Group-Brake | 1 |
6e3528 Valve Gp-Breaker Relief
| 6E***28 | Valve Group-Breaker Relief; -Sound Suppression | 1 |
9t1082 Valve Gp-Check & Relief
| 9T***82 | Valve Group-Check & Relief; (Stick) | 1 |
6e3593 Valve Gp-Check & Relief
| 6E***93 | Valve Group-Check & Relief | 1 |
9t9158 Valve Gp-Combination
| 9T***58 | Valve Group-Combination | 1 |
3g3816 Valve Gp-Control
| 3G***16 | Valve Group-Control; -Rh | 1 |
3g3817 Valve Gp-Control
| 3G***17 | Valve Group-Control; -Lh | 1 |
9j2084 Valve Gp-Drain
| 9J***84 | Valve Group-Drain | 1 |
8j4356 Valve Gp-Pilot
| 8J***56 | Valve Group-Pilot | 1 |
4t9980 Valve Gp-Pilot
| 4T***80 | Valve Group-Pilot | 1 |
6e3322 Valve Gp-Pilot
| 6E***22 | Valve Group-Pilot | 1 |
3g3818 Valve Gp-Control
| 3G***18 | Valve Group-Pilot Travel & Steer | 1 |
9t3356 Valve Gp-Pitch Relief-Pilot Operated
| 9T***56 | Valve Group-Pitch Relief | 1 |
8j2057 Valve Gp-Pitch Relief-Pilot Operated
| 8J***57 | Valve Group-Pitch Relief | 1 |
6e2842 Valve Gp-Relief
| 6E***42 | Valve Group-Relief | 1 |
4t5572 Valve Gp-Relief-Pilot Operated
| 4T***72 | Valve Group-Relief; -Main | 1 |
6e2948 Valve Gp-Relief-Pilot Operated
| 6E***48 | Valve Group-Relief | 1 |
6e1151 Valve Gp-Relief-Pilot Operated
| 6E***51 | Valve Group-Relief | 1 |
9t9165 Valve Gp-Relief
| 9T***65 | Valve Group-Relief | 1 |
9t9160 Valve Gp-Relief
| 9T***60 | Valve Group-Relief | 1 |
6e3183 Valve Gp-Relief
| 6E***83 | Valve Group-Relief | 1 |
3g9895 Valve Gp-Relief
| 3G***95 | Valve Group-Relief | 1 |
9t0122 Valve Gp-Relief-Pilot Operated
| 9T***22 | Valve Group-Relief; -Line | 1 |
8j2602 Valve Gp-Selector
| 8J***02 | Valve Group-Selector | 1 |
9t5584 Valve Gp-Selector
| 9T***84 | Valve Group-Selector; (A) | 1 |
5c9971 Valve Gp-Selector
| 5C***71 | Valve Group-Selector | 1 |
9t3672 Valve Gp-Selector
| 9T***72 | Valve Group-Selector | 1 |
6t5859 Valve Gp-Solenoid
| 6T***59 | Valve Group-Solenoid; (Ride Control) | 1 |
7t9746 Valve Gp-Solenoid
| 7T***46 | Valve Group-Solenoid; (Warm-Up & Boom Float) | 1 |
Implements
9w8565 Sidecutter Gp-Blade
| 9W***65 | Sidecutter Group-Blade; Sidecutter Gp-Blade | 1 |
9w8566 Sidecutter Gp-Combination
| 9W***66 | Sidecutter Group-Combination | 1 |
9w8567 Sidecutter Gp-Strike Off
| 9W***67 | Sidecutter Group-Strike Off | 1 |
6c4313 Boom Ar-Hoe
| 03***89 | Grease Fitting | 3 |
| 6C***43 | Boom Group | 1 |
| 6C***14 | Lighting Group; Lighting Gp-Boom | 1 |
6c3747 Boom Ar-Hoe
| 3B***89 | Fitting-Grease; (Fan And Alternator Drive) | 3 |
| 6C***14 | Lighting Group; Lighting Gp-Boom | 1 |
| 6C***47 | Boom Ar-Hoe | 1 |
6c3748 Boom Gp
| 6C***48 | Boom Group | 1 |
6c2943 Boom Gp
| 6C***43 | Boom Group | 1 |
8r9476 Bucket As
| 8R***76 | Bucket As | 1 |
7y7468 Bucket As
| 7Y***68 | Bucket As | 1 |
8r9479 Bucket As
| 8R***79 | Bucket As | 1 |
7y7552 Bucket As
| 7Y***52 | Bucket As | 1 |
7y7469 Bucket As
| 7Y***69 | Bucket As | 1 |
4e6795 Bucket As
| 4E***95 | Bucket As | 1 |
4e7309 Link & Bearing As
| 4E***09 | Link & Bearing As | 1 |
8r6449 Linkage Ar-Bucket
| 3B***89 | Fitting-Grease; (Fan And Alternator Drive) | 2 |
| 6E***21 | Cylinder Group-Bucket | 1 |
| 8R***49 | Linkage Ar-Bucket | 1 |
9u2291 Linkage Ar-Bucket
| 3B***89 | Fitting-Grease; (Fan And Alternator Drive) | 2 |
| 6E***21 | Cylinder Group-Bucket | 1 |
| 9U***91 | Linkage Ar-Bucket | 1 |
9u2292 Linkage Gp-Bucket
| 9U***92 | Linkage Group-Bucket | 1 |
8r7415 Linkage Gp-Bucket
| 8R***15 | Linkage Group-Bucket | 1 |
8r7659 Stick Ar-Hoe
| 8R***59 | Stick Ar-Hoe | 1 |
| 8R***60 | Stick Group-Hoe | 1 |
| 8R***27 | Lines Group-Stick | 1 |
8r7655 Stick Ar-Hoe
| 8R***55 | Stick Ar-Hoe | 1 |
| 8R***56 | Stick Group-Hoe | 1 |
| 8R***28 | Lines Group-Stick | 1 |
6c4369 Stick Ar-Hoe
| 6C***15 | Stick Group-Hoe | 1 |
| 6C***06 | Lines Group-Stick | 1 |
| 6C***69 | Stick Ar-Hoe | 1 |
4e9079 Stick Ar-H0e
| 4E***79 | Stick Ar-Hoe | 1 |
| 4E***80 | Stick Group-Hoe | 1 |
| 8R***28 | Lines Group-Stick | 1 |
6c3915 Stick Gp-Hoe
| 6C***15 | Stick Group-Hoe | 1 |
8r7656 Stick Gp-Hoe
| 8R***56 | Stick Group-Hoe | 1 |
8r7660 Stick Gp-Hoe
| 8R***60 | Stick Group-Hoe | 1 |
4e9080 Stick Gp-Hoe
| 4E***80 | Stick Group-Hoe | 1 |
3g3236 Tip Gp-Penetration
| 3G***36 | Tip Group; -J-350 | 1 |
8j4955 Tip Gp-Long
| 8J***55 | Tip Group-Long; -J-350 | 1 |
8e0834 Tip Gp-Long
| 8E***34 | Tip Group-Long; (Long) | 1 |
8e0838 Tip Gp-Penetration
| 8E***38 | Tip Group-Penetration; -J-400 | 1 |
8j4954 Tip Gp-Short
| 8J***54 | Tip Group-Short; -J-350 | 1 |
8e0835 Tip Gp-Short
| 7T***01 | Tip-Short | 1 |
| 7T***08 | Pin-G.E.T. | 1 |
| 8E***35 | Tip Group-Short | 1 |
8j4953 Tip Gp-Wide
| 8J***53 | Tip Group-Wide; -J-350 | 1 |
8e0836 Tip Gp-Wide
| 7T***00 | Tip-Wide | 1 |
| 7T***08 | Pin-G.E.T. | 1 |
| 8E***36 | Tip Group-Wide; -J-400 | 1 |
Lubrication System
9y0858 Filter Gp-Engine Oil
| 9Y***58 | Filter Group-Engine Oil | 1 |
7e8595 Gauge Gp-Oil Level (Dipstick)
| 7E***95 | Gauge Group-Oil Level (Dipstick) | 1 |
7c6490 Lines Gp-Engine Oil
| 7C***90 | Lines Group-Engine Oil | 1 |
1n4254 Pump Gp-Engine Oil
| 1N***54 | Pump Group-Engine Oil | 1 |
Operator Station
6c7013 Air Conditioner & Mounting Gp
| 6C***13 | Air Conditioner & Mounting Group | 1 |
6c5811 Air Conditioner Ar
| 6C***06 | Lines Group; Lines Gp-Air Conditioner | 1 |
| 6C***11 | Air Conditioner Ar | 1 |
| 6C***78 | Compressor Group-Refrigerant | 1 |
6c7014 Air Conditioner Gp
| 6C***14 | Air Conditioner Group | 1 |
6c7135 Air Conditioner Gp
| 6C***35 | Air Conditioner Group | 1 |
6c3829 Arm Gp-Wiper
| 6C***29 | Arm Group-Wiper | 1 |
6c3802 Cab Gp-Part 3 Of 3
| 6C***02 | Cab Group | 1 |
6c3802 Cab Gp-Part 2 Of 3
| 6C***02 | Cab Group | 1 |
6c3802 Cab Gp-Part 1 Of 3
| 6C***02 | Cab Group | 1 |
6c3800 Cab Gp
| 6C***00 | Cab Group | 1 |
6c3801 Cab Gp
| 6C***01 | Cab Group | 1 |
7n4297 Clutch & Refrigerant Compressor Gp*R
| 7N***97 | Clutch & Refrig Compressor Group | 1 |
6c5878 Compressor Gp-Refrigerant
| 6C***78 | Compressor Group-Refrigerant | 1 |
8r8123 Mounting & Condenser Gp
| 8R***23 | Condenser & Mounting Group; Mounting & Condenser Gp | 1 |
7g3478 Condenser Gp-Part 2 Of 2
| 7G***78 | Condenser Group | 1 |
7g3478 Condenser Gp-Part 1 Of 2
| 7G***78 | Condenser Group | 1 |
6c4335 Cover Gp-Console
| 6C***35 | Cover Group-Console | 1 |
6c7120 Duct Gp
| 6C***20 | Duct Group | 1 |
6c7117 Duct Gp-Air
| 6C***17 | Duct Group-Air | 1 |
6c7118 Duct Gp-Air
| 6C***18 | Duct Group-Air | 1 |
9c8725 Fan Gp-Circulating
| 9C***25 | Fan Group-Circulating | 1 |
5d2856 Fan Gp-Defrosting
| 5D***56 | Fan Group-Defrosting | 1 |
4e4473 Gauge & Warning Gp-Part 2 Of 2
| 4E***73 | Gauge & Warning Group | 1 |
4e4473 Gauge & Warning Gp-Part 1 Of 2
| 4E***73 | Gauge & Warning Group | 1 |
6c3882 Guard Gp-Window
| 6C***82 | Guard Group-Window | 1 |
6c5586 Heater Gp
| 6C***86 | Heater Group | 1 |
6c5585 Heater Gp-Mounting
| 6C***85 | Heater Group | 1 |
6c4324 Heater Gp
| 6C***24 | Heater Group | 1 |
6c4345 Heater Gp-Cab
| 6C***45 | Heater Group-Cab | 1 |
6c7121 Heater Gp-Cab
| 6C***21 | Heater Group-Cab | 1 |
6c5806 Lines Gp-Air Conditioner
| 6C***06 | Lines Group; Lines Gp-Air Conditioner | 1 |
8r6611 Mirror Gp
| 8R***11 | Mirror Group | 1 |
5v6143 Mirror Gp-Rear View
| 5V***43 | Mirror Group-Rear View | 1 |
6c5348 Panel Gp
| 6C***48 | Panel Group | 1 |
6c3859 Seat Gp-Adjustable-Part 1 Of 2
| 6C***59 | Seat Group-Adjustable | 1 |
6c3859 Seat Gp-Adjustable-Part 2 Of 2
| 6C***59 | Seat Group-Adjustable | 1 |
8y4009 Seat Gp-Suspension
| 8Y***09 | Seat Group-Suspension | 1 |
6c5067 Suppression Ar-Sound
| 4B***58 | Screw (Identification Plate) Mounting | 4 |
| 6C***92 | Guard Group-Bottom | 1 |
| 6C***25 | Guard Group-Lines; Guard Gp-Pilot Lines | 1 |
6w9972 Washer Gp-Windshield
| 5C***40 | Reservoir | 1 |
| 5C***41 | Support As | 1 |
| 6W***72 | Washer Group-Window | 1 |
4e6418 Washer Gp-Windshield
| 4E***18 | Washer Group-Windshield | 1 |
6c3833 Window Gp
| 6C***33 | Window Group | 1 |
6c3822 Window Gp
| 6C***22 | Window Group | 1 |
6c3823 Window Gp
| 6C***23 | Window Group | 1 |
6c3845 Windshield Gp
| 6C***45 | Windshield Group | 1 |
6c3832 Windshield Gp
| 6C***32 | Windshield Group | 1 |
6c3824 Wiper Gp
| 6C***24 | Wiper Group | 1 |
6c3825 Wiper Gp
| 6C***25 | Wiper Group | 1 |
7v9856 Wiring Gp-Air Conditioner
| 7V***56 | Wiring Group-Air Conditioner | 1 |
Power Train
9c5969 Brake Gp-Parking
| 9C***69 | Brake Group-Parking | 1 |
6w4584 Brake Gp-Parking
| 6W***84 | Brake Group-Parking | 1 |
3v4487 Control Gp-Swing Brake
| 3V***87 | Control Group-Swing Brake | 1 |
8r6123 Drive Gp-Swing
| 8R***23 | Drive Group-Swing | 1 |
6w4919 Final Drive Gp-Part 1 Of 2
| 6W***19 | Final Drive Group | 1 |
6w4920 Final Drive Gp-Part 1 Of 2
| 6W***20 | Final Drive Group | 1 |
6w4919 Final Drive Gp-Part 2 Of 2
| 6W***19 | Final Drive Group | 1 |
6w4920 Final Drive Gp-Part 2 Of 2
| 6W***20 | Final Drive Group | 1 |
Service Equipment And Supplies
Name Plates & Films-Part 2 Of 2
| 6V***11 | Film; Film-Warning. Located On Front Of Fuel | 1 |
| 6V***15 | Film-Identification-On Fuel Filter | 1 |
| 7X***29 | Film; (Lift And Tie Down) (W/O Ripper: On Side Of Track Roller Frame Between Front Roller And Idler And Between Rear Roller And Idler (2 Each Side)) (W Ripper: On Side Of Track Roller Frame Between Front Roller And Idler And On Side Of Lower Ripper Frame By Rea | 2 |
Name Plates & Films-Part 1 Of 2
| 1P***07 | Film-Symbol; 2 On Bottom Of Upper Frame Below Engine. 2 On Front Of Upper Frame Above Boom Articulation | 2 |
| 3E***96 | Film (Lift Here Symbol) | 1 |
| 5P***49 | Film-Instruction (Steer/Travel Controls) | 1 |
7x2913 Paint & Lubricant Gp
| 1P***07 | Film-Symbol; 2 On Bottom Of Upper Frame Below Engine. 2 On Front Of Upper Frame Above Boom Articulation | 2 |
| 3E***96 | Film (Lift Here Symbol) | 1 |
| 5P***49 | Film-Instruction (Steer/Travel Controls) | 1 |
Starting System
5n6704 Starting Motor Gp-Electric
| 5N***04 | Starting Motor Group-Electric | 1 |
8c3651 Starting Motor Gp-Electric
| 8C***51 | Starting Motor Group-Electric; Starting Motor Gp-Electric-Delco-Remy | 1 |
4n3181 Starting Motor Gp-Electric*R
| 3T***05 | Starting Motor Group-Electric; Starting Motor Group (Robert Bosch) | 1 |
| 4N***81 | Starting Motor Group-Electric | 1 |
| 8C***51 | Starting Motor Group-Electric; Starting Motor Gp-Electric-Delco-Remy | 1 |
3t6305 Starting Motor Gp-Electric
| 3T***05 | Starting Motor Group-Electric; Starting Motor Group (Robert Bosch) | 1 |
9x4447 Starting Motor Gp-Electric
| 9X***47 | Starting Motor Group-Electric; Electric Starting Motor Group (Nippondenso) | 1 |
6n9294 Alternator Gp-Charging*R
| 3T***52 | Alternator Group-Charging | 1 |
| 6N***94 | Alternator Group; (24-Volt, 35-Ampere) | 1 |
| 7N***20 | Alternator Group; Alternator Group (Robert Bosch) | 1 |
8n9512 Alternator Gp-Charging
| 8N***12 | Alternator Group | 1 |
7n9720 Alternator Gp-Charging
| 7N***20 | Alternator Group; Alternator Group (Robert Bosch) | 1 |
1005047 Alternator Gp-Charging*R
| 10***45 | Alternator Group-Charging; (Nippondenso) | 1 |
| 10***46 | Alternator Group-Charging; -24-Volt, 50-Ampere | 1 |
| 10***47 | Alternator Group-Charging; -24-Volt, 50-Ampere | 1 |
3e7578 Alternator Gp-Charging
| 3E***78 | Alternator Group-Charging; Charging Alternator Group (Delco Remy) | 1 |
9g4574 Alternator Gp-Charging
| 9G***74 | Alternator Group-Charging; Alternator Group (Nippondenso) | 1 |
3t6352 Alternator Gp-Part 2 Of 2
| 3T***52 | Alternator Group-Charging | 1 |
1005045 Alternator Gp-Charging-24 Volt, 50 Ampere
| 10***45 | Alternator Group-Charging; (Nippondenso) | 1 |
3t1888 Alternator Gp-Charging
| 3T***88 | Alternator Group-Charging; Alternator Group Delco-Remy 24 Volt, 50 Ampere | 1 |
6t7223 Alternator Gp-Charging
| 6T***23 | Alternator Group-Charging; Alternator Group-Nippondenso -- 24 Volt, 50 Ampere | 1 |
7e9513 Alternator Gp
| 7E***13 | Alternator Group-Charging | 1 |
3t6352 Alternator Gp-Part 1 Of 2
| 3T***52 | Alternator Group-Charging | 1 |
1005046 Alternator Gp-Charging-24 Volt, 50 Ampere
| 10***46 | Alternator Group-Charging; -24-Volt, 50-Ampere | 1 |
9g9538 Alternator Gp-Charging
| 9G***38 | Alternator Group-Charging | 1 |
5s9088 Alternator Gp-Charging*R
| 3E***78 | Alternator Group-Charging; Charging Alternator Group (Delco Remy) | 1 |
| 3T***88 | Alternator Group-Charging; Alternator Group Delco-Remy 24 Volt, 50 Ampere | 1 |
| 5S***88 | Alternator Group-Charging | 1 |
4e4470 Battery & Wiring Gp-Part 1 Of 2
| 4E***70 | Battery & Wiring Group | 1 |
4e4470 Battery & Wiring Gp-Part 2 Of 2
| 4E***70 | Battery & Wiring Group | 1 |
8k2506 Battery Gp
| 8K***06 | Battery Group | 1 |
7t8000 Control Gp-Electronic
| 7T***00 | Converter As-Electrical | 1 |
3v4495 Horn Gp-Electric
| 3V***95 | Horn Group-Electric | 1 |
6c3014 Lighting Gp-Boom
| 6C***14 | Lighting Group; Lighting Gp-Boom | 1 |
6c1505 Lighting Gp-2 Lamp
| 6C***05 | Lighting Group-2 Lamp | 1 |
4n9314 Shut-Off Gp-Electrical
| 4N***14 | Shutoff Group-Electrical | 1 |
6t6122 Solenoid As-Shut-Off
| 6T***22 | Solenoid As-Shutoff; Solenoid Gp-Shut-Off--Ledex Inc | 1 |
6n9987 Solenoid Gp-Shut-Off
| 6N***87 | Solenoid Group-Shutoff | 1 |
| 6T***26 | Solenoid Group-Shutoff; Solenoid Gp-Shut-Off | 1 |
| 6T***22 | Solenoid As-Shutoff; Solenoid Gp-Shut-Off--Ledex Inc | 1 |
6t4126 Solenoid Gp-Shut-Off
| 6T***26 | Solenoid Group-Shutoff; Solenoid Gp-Shut-Off | 1 |
7n8884 Solenoid Gp-Shut-Off
| 7N***84 | Solenoid Group-Shutoff; Solenoid Gp-Shut-Off | 1 |
4e7109 Starting Aid Gp-Ether
| 4E***09 | Starting Aid Group-Ether | 1 |
7n0718 Switch As-Disconnect
| 7N***18 | Switch As-Disconnect; -Battery-Ground Level | 1 |
9g7641 Switch Gp-Start
| 9G***41 | Switch Group-Start; -Engine, Key-Vims Service | 1 |
6c3966 Wiring Gp-Cab
| 6C***66 | Wiring Group-Cab | 1 |
231D serial number reference
The PIN plate on a 231D is typically riveted to the right side of the cab below the window; on these older 225/235-derived machines a second plate is sometimes found on the boom arm just above the ladder, or inside the cab near the operator's seat or right foot area. The serial number is an 8-character code: a 3-character prefix identifying the model and production series (e.g. 1NK, 5WJ) followed by a 5-digit sequential unit number within that series. Clean the plate before reading, since paint and grease commonly obscure it on machines this age.
| Prefix | Identifies | Notes |
|---|---|---|
| 1NK | 231D and 231D LC, early production series | Covers 231D and 231D LC excavators fitted with the Cat 3208 turbocharged V8 diesel. Earliest documented parts-manual serial range for this model, starting at unit 00001. Field units carrying this prefix are commonly dated around 1989-1992. Real-world units sold under this prefix include machines titled as plain 231D and as 231D LC, so the range spans both the standard and LC (235-based undercarriage/boom) configuration. Exact year cutoffs vary by source - confirm with dealer. |
| 5WJ | 231D and 231D LC, later production series | Covers 231D and 231D LC excavators fitted with the Cat 3208 turbocharged V8 diesel, same engine family as the 1NK range. Distinct parts-manual serial range starting at unit 00001, associated with later production commonly cited around 1991-1993. Parts-manual title explicitly covers both 231D and 231D LC (235 undercarriage/boom) configurations under this one range. Exact year cutoffs vary by source - confirm with dealer. |
Frequently asked questions
What engine powers the Caterpillar 231D?
A Cat 3208 or turbocharged 3208T V8 diesel rated around 200 hp (149 kW). It is a fully mechanical engine with a mechanical injection pump and no ECM or electronic diagnostics.
What is the operating weight of the Caterpillar 231D?
Operating weight runs 33.6 to 35.5 tonnes (74,000 to 78,264 lb) depending on configuration. The standard-undercarriage machine weighs about 35.2 tonnes (77,600 lb) and the LC (long-carriage) version about 35.5 tonnes (78,264 lb).
What replaced the Caterpillar 231D?
Cat did not carry the 231D forward as a numbered model. It had replaced the Cat 229 in the lineup, and when production ended in 1993 the mechanical 200-series excavator family gave way to Cat's electronically managed 300-series machines (320/325/330).
What 231D owners discuss
What do experienced operators say about the 231D's hydraulic pump layout and how it behaves?
The 231D uses a different, more consolidated hydraulic pump arrangement than the older 225 it's related to, and owners moving between the two models note it as one of the more noticeable practical differences in feel. The general wear pattern for a hydraulic system this age is loss of pressure, overheated oil, or jerky, hesitant boom/stick/bucket movement, which points to internal leakage or contamination rather than a pump failing outright. Original rubber seals have typically hardened after decades in service and start to weep, so seal condition and oil cleanliness get checked before a pump or valve gets blamed.
What's the known weak point in the 231D's undercarriage, and what wear pattern should buyers expect?
The 231D pairs a 225-style upper structure with a heavier, 235-derived undercarriage, and that undercarriage is the part owners flag most often as the machine's soft spot. A heavily worn set of tracks, rollers, and idlers on one of these is read as a sign of serious hours rather than light use. Running track tension too tight adds load across the links, rollers, and idler and speeds up wear, and digging to the side or over the rear instead of working straight ahead accelerates idler wear specifically. Undercarriage condition is the first thing to put hands on, not just a visual walk-around.
How do the swing drive and travel (final drive) motors typically wear on a machine like this?
Swing and travel motor output-shaft seals harden and start to weep with age on machines this old, a normal aging symptom rather than a defect on its own. Once an internal bearing starts to go, the shaft walks slightly out of alignment and lets gear oil or hydraulic oil pass the seal, which usually shows up as oil around the sprocket area or the swing housing. Light seepage gets logged and watched; steady dripping, or a gear-oil level that keeps rising or falling between checks, means the seal and possibly the bearing need attention before the failure gets more expensive.
What are the known quirks of the 231D's engine?
The 231D is powered by the turbocharged Cat 3208 (3208T), rated at roughly 149 kW (200 gross hp), on a machine that comes in around 35 tonnes (76,000-78,000 lb) operating weight depending on configuration. It's a mechanical, direct-injection diesel with no glow plugs or intake air heater from the factory; a properly maintained example is expected to start almost instantly even in cool weather, so a machine that's hard to start cold usually has a compression or fuel-system problem rather than a missing preheat system. Ether is treated strictly as an occasional cold-start aid for genuinely tough conditions, not something to rely on every morning.
Is there a known leak or wear point on the 231D's fuel system?
The 3208's injection pump has a recognized leak point at the governor control shaft and the throttle shaft bushing at the rear of the pump housing. As that shaft wears it runs slightly off center, the seal stops sealing, and fuel weeps at the back of the pump. Proper repair means pulling the intake manifold to access the rear governor housing and rebushing and reseating it, which shops treat as a bigger job than a simple seal swap once real wear has set in. Because governor condition also affects engine speed control, have your dealer verify governor adjustment and pump condition rather than just chasing the leak.
What electrical issues come up most on machines of this vintage?
Wiring insulation on 30-plus-year-old machines dries out, cracks, and flakes, especially on harness runs that have soaked in engine oil over the years, producing intermittent grounds and hard-to-chase faults rather than one clean failure. Charging complaints are common and can be either the alternator itself or the exciter-wire circuit that has to feed it voltage before it comes online; a weak exciter connection leaves a mechanically good alternator not charging, so both ends of the circuit get checked before a part gets condemned. Have your dealer or an experienced equipment electrician verify the full charging circuit before replacing parts on a guess.
What should a buyer check before purchasing a used 231D?
Start with the undercarriage. It's the known weak point and the fastest way to gauge real hours, so check tracks, rollers, idlers, and tension along with pin and bushing wear through the boom and stick. Look for oil weeping around the swing housing and travel motor sprockets, and run the hydraulics under load through all functions at once to check for jerky or slow movement that would point to pump or valve wear. Confirm the engine starts promptly cold without needing ether every time. This model carries a reputation among longtime owners for needing real money to keep productive once it's tired, so budget for undercarriage and hydraulic seal work rather than assuming clean paint means a sound machine. If a straight 225 or 235 is available for comparison, some owners consider it worth cross-shopping before committing to the 231D's hybrid combination.
Compiled from owner and technician discussions across the industry — experiences vary by serial range and machine history.
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