Caterpillar AD55
Caterpillarunderground articulated truck(no series)

Caterpillar AD55

Maintenance schedule, common problems & OEM parts breakdown

The Caterpillar AD55 is a rigid-frame, center-articulated underground haul truck built for hard-rock and coal mine development where low headroom and tight turning radii rule out surface-style rigid dump trucks. It sits in the mid-to-upper end of Cat's underground truck range, alongside the smaller AD30 and AD45 and the larger AD60. The base AD55 runs a mechanical Cat C18 DITA ATAAC diesel (carried over from the earlier 3456 engine family) rated at 485 kW (650 hp) gross power and roughly 460 kW (617 hp) net, driving a seven-speed power-shift transmission through a torque converter. Nominal payload is 55,000 kg (121,254 lb), tare weight runs close to 47,000 kg (103,600 lb), and loaded gross weight lands in roughly the 100,000-105,000 kg (220,000-231,000 lb) range depending on body and tire spec. Caterpillar built the AD55 through the 2000s before replacing it with the AD55B in 2008, which carried the same 55-tonne payload class forward on a Cat C27 ACERT engine rated 579-600 kW (776-805 hp). The line was later topped by the 60-tonne AD60. Configurations on the AD55 included standard and ejector dump bodies, with factory options for exhaust conditioning and fire suppression to meet underground ventilation and safety rules.

The move from AD55 to AD55B was mainly a powertrain and serviceability update: Caterpillar swapped the mechanically injected C18 DITA for the ACERT-era C27, adding roughly 20 percent more gross power, and relocated transmission, engine, and fuel filters to ground-accessible points to cut service time in cramped underground service bays. The four-wheel, fully enclosed, oil-cooled disc brake system - which combines service, secondary, parking, and retarding functions in one circuit - carried through both generations largely unchanged and remains one of the truck's most durable design points. On the used and parts market today, the AD55 is a mature, well-understood platform. Mines still running older underground fleets keep AD55 units in service precisely because the mechanical engine and conventional power-shift driveline are simpler and cheaper to maintain than the electronically managed AD55B and AD60 generations, and remanufactured engine, transmission, brake-pack, and final-drive components are the main demand drivers rather than complete machine sales.

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 AD55 specifications

Engine

Engine (earlier factory rating)Cat C18 DITA ATAAC, turbocharged, air-to-air aftercooled. Gross power 485 kW (650 hp) SAE, 492 kW (657 hp) ISO, at 2000 rpm rated speed.
Engine (later factory rating)Cat C18 ACERT, 6-cylinder, turbocharged, air-to-air aftercooled. Gross power (SAE J1995) 439 kW (589 hp); net power (SAE J1349 / ISO 9249 / 80-1269-EEC) 414 kW (555 hp), at 2000 rpm rated speed. Meets U.S. EPA Tier 3 as standard.
Note on power ratingGross/net power figures vary by documentation vintage of the same C18-powered AD55 - earlier factory literature lists a higher DITA ATAAC gross rating, later ACERT/Tier 3 literature lists a lower gross rating with a published net figure. Verify actual rating against the data plate.
Bore x stroke145 mm x 183 mm (5.7 in x 7.2 in)
Displacement18.1 L (1,104.5 cu in)
Cylinders6, inline

Weights

Operating weight, empty47 000 kg (103,617 lb) total - front axle 31 300 kg (69,004 lb), rear axle 15 700 kg (34,612 lb)
Nominal payload capacity55 000 kg (121,254 lb)
Gross machine operating weight, loaded102 000 kg (226,871 lb) total - front axle 48 202 kg (106,267 lb), rear axle 53 798 kg (118,604 lb)
Weight distribution, emptyfront approx. 66-67%, rear approx. 33-34%
Weight distribution, loadedfront approx. 47-48%, rear approx. 52-53%

Dimensions

Overall length11 547 mm (454.6 in / 37.9 ft)
Overall width3346 mm (131.7 in) with standard body, widening to 3480 mm (137.0 in) with the largest optional dump body
Transport height, top of ROPS3000 mm (118.1 in)
Wheelbase5900 mm (232.3 in)
Ground clearance391 mm (15.4 in)
Dump height, body raised6969 mm (274.4 in) with standard body, up to approx. 7334 mm (288.7 in) with the largest optional body
Outside turning radius9885 mm (389.2 in)
Articulation angle42.5 degrees
Frame oscillation10 degrees
Tire size35/65R33 radial

Performance

TransmissionPower-shift, 7 speeds forward / 2 reverse, torque converter with automatic lockup, electronically controlled shifting
Travel speed rangeVaries by documentation vintage/gearing. Forward gears span roughly 7.0-50.4 kph (4.4-31.3 mph) and reverse roughly 6.8-10.8 kph (4.2-6.7 mph) across the documented configurations. Earlier factory literature tops out near 50.4 kph (31.3 mph) in 7th gear; later factory literature tops out near 43.3 kph (26.9 mph) in 7th gear, with standard 35/65R33 tires.
Total reduction ratioApprox. 19.04:1 (differential ratio 3.46:1 x final drive ratio 5.5:1)
Body hoist cycleVaries by configuration - raise approx. 11-12 sec, lower approx. 4-24 sec, total cycle approx. 15-36 sec depending on body/hoist arrangement
BrakesCat oil-cooled multiple-disc brakes on all wheels, combined service/secondary/parking/retarding function, automatic retarder control

Service capacities (summary)

Fuel tank960 L (253.6 gal)
Hydraulic tank258 L (68.2 gal)
Engine oil, crankcase with filter64 L (16.9 gal)
Cooling system75 L (19.8 gal)
Transmission53 L (14 gal)
Front differentials and final drives138 L (36.5 gal)
Rear differentials and final drives138 L (36.5 gal)

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

AD55 fluids & capacities

SystemCapacityRecommended fluid
Engine crankcase (with filter) — Cat C18 DITA ATAACapprox. 64 L (16.9-17.0 US gal)Cat DEO (Diesel Engine Oil) / DEO-ULS multigrade, viscosity grade selected by ambient temperature per the Cat fluid recommendations guide
Cooling system75-85 L (19.8-22.5 US gal), varies by configurationCat ELC (Extended Life Coolant), 50/50 premix, or Cat DEAC where ELC is not specified
Fuel tank764-960 L (201.9-253.6 US gal), varies by tank option — verify against the specific machine's tank optionDiesel fuel per Cat fuel specification
Powershift transmission53-60 L (14.0-15.9 US gal), varies by configurationCat TDTO (Transmission/Drive Train Oil), SAE 10W/30/50 by climate, or Cat Arctic TDTO synthetic 0W-20 for cold-climate operation
Hydraulic tank258-266 L (68.2-70.3 US gal)Cat HYDO / Cat HYDO Advanced hydraulic oil, viscosity grade by climate
Front differential and final driveapprox. 138 L (36.5 US gal) — figure not independently verified; confirm with your dealerCat TDTO (Transmission/Drive Train Oil), SAE grade by climate
Rear differential and final driveapprox. 138 L (36.5 US gal) — figure not independently verified; confirm with your dealerCat TDTO (Transmission/Drive Train Oil), SAE grade by climate
Grease points (pins, bushings, articulation joint)spec only, no chart quantityCat Advanced 3Moly Grease (NLGI 2), or Cat Utility Grease for standard-duty points

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

Caterpillar AD55 maintenance schedule

Service intervalTasks
Every 10 h
  • Check engine oil level on the C18 DITA before starting and top off with the correct-grade specification oil
  • Check coolant level and inspect hoses and water-to-oil brake heat exchangers for leaks
  • Check transmission/torque converter oil level with the engine at operating temperature
  • Inspect the four-wheel oil-cooled disc brake system for oil level, leaks, and abnormal noise
  • Walk around the machine to check tires, articulation hitch, lighting, and back-up alarm
  • Drain the fuel/water separator and check fuel level
Every 250 h
  • Change engine oil and filter on the C18 DITA ATAAC engine
  • Pull oil samples from the engine, transmission/torque converter, and front/rear differentials for fluid analysis
  • Grease the articulation hitch, steering cylinder pins, and dump body hoist pivots
  • Inspect service brake discs and the oil-cooled brake circuit for wear indicators
  • Check front and rear differential and final drive oil levels
Every 500 h
  • Change transmission/torque converter oil and filter
  • Change steering and hoist hydraulic system filters
  • Inspect and adjust fan drive belt and alternator belt tension
  • Check axle housing breathers and oil cooler cores for blockage or debris
  • Test parking brake and secondary brake function under load
Every 1,000 h
  • Change front and rear differential and final drive oil
  • Replace primary and secondary engine air filter elements
  • Inspect the turbocharger, ATAAC aftercooler core, and air intake piping for leaks
  • Change the hydraulic tank oil filter and check the tank breather
  • Inspect the articulated frame, center hitch pin, and oscillation bearings for wear
Every 2,000 h
  • Test coolant condition and inspect the water pump
  • Change oil in the oil-cooled disc brake circuit
  • Inspect and re-torque wheel rim clamps, final drive housing bolts, and frame structural fasteners
  • Check the transmission electronic control for logged fault history
  • Inspect ROPS/FOPS cab mounts and any fitted fire suppression system
Every 4,000 h
  • Replace extended-life coolant and flush the cooling system if not already done
  • Bench-inspect the torque converter and power-shift clutch packs
  • Inspect oil-cooled brake pack discs against wear limits and replace as needed
  • Complete a full structural inspection of the articulated frame, hitch, and dump body hoist mounts
Every 6,000 h
  • Evaluate the C18 DITA engine for major overhaul: cylinder pack, bearings, and injection pump condition
  • Rebuild front and rear final drive planetary sets
  • Replace articulation hitch pins and bushings
  • Inspect and recertify the ROPS/FOPS cab structure

Servicing the AD55 beyond the schedule

Predictive Maintenance & Fluid Analysis

Run oil sampling on the C18 DITA engine, torque converter/transmission, and front and rear differentials at every 250-hour interval. This mechanical, non-ACERT engine has no fault-code diagnostics, so fluid analysis is the main early-warning tool for liner, bearing, and injector wear. Track oil condition in the brake circuit closely: the four-wheel oil-cooled disc system shares cooling duty with the water-to-oil heat exchangers, and degraded oil accelerates disc wear. Watch coolant and final-drive oil for contamination tied to hitch and axle seal wear.

Corrective & Common Repairs

Expect recurring wear at the articulation hitch and center pin from constant tight-radius turning in drift and ramp haulage; inspect and re-bush before play turns into frame damage. Oil-cooled brake discs wear steadily on grade-heavy routes and routine disc-pack replacement is normal, not a fault. Torque converter and power-shift clutch packs take the brunt of repeated loaded starts on ramp; watch for slipping or delayed engagement. Turbocharger and ATAAC aftercooler cores on the C18 DITA foul with underground dust and need periodic cleaning to hold rated power.

Overhaul & Rebuild Points

Plan a mid-life rebuild around the C18 DITA cylinder pack, main and rod bearings, and injection pump once hours climb into overhaul territory. This is a mechanical engine, so rebuild kits and liner sets are the core parts spend rather than electronic components. Torque converter and power-shift transmission clutch packs are the next major rebuild point, followed by front and rear final-drive planetary sets worn by constant loaded-grade operation. Budget separately for oil-cooled brake pack rebuilds and articulation hitch pin and bushing replacement, both high-wear items on this chassis.

Underground Environment Servicing

Underground working conditions matter more than surface seasons on the AD55. High ambient dust loads shorten air filter and ATAAC aftercooler service life, so shorten primary and secondary element intervals in dry, dusty headings. Constant humidity and mine water spray accelerate corrosion on brake heat-exchanger cores, wiring connectors, and hitch grease points; check and re-grease more often than the printed interval in wet workings. Where a mine runs exhaust conditioning for ventilation compliance, service that equipment on its own schedule since it sits apart from the engine's own intervals.

AD55 common service parts

Part numberPart
133-5673ElementCheck fitment →
141-0284Kit-Fuel Filter & WaterseparatorCheck fitment →
1R-0749Filter-FuelCheck fitment →
1N-4864Filter Element As-AirCheck fitment →
4W-5228Filter Element As-AirCheck fitment →

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

AD55 fault codes & troubleshooting

CodeMeaningLikely causeWhat to do
MID 036 - CID 0100 - FMI 01Engine oil pressure below normal for current engine speedLow oil level, worn oil pump, restricted suction screen, or a failing oil pressure sensor/wiring on the engine ECM circuitStop engine safely, check oil level and for visible leaks, inspect sensor wiring and connector before restarting; do not run the engine under load until pressure is confirmed normal
MID 036 - CID 0110 - FMI 00Engine coolant temperature above normal operating rangeLow coolant level, blocked radiator core, slipping or failed fan drive, faulty thermostat, or sustained high-load lugging in the driftReduce load and idle to cool down, check coolant level and radiator/core cleanliness, verify fan operation before resuming full-power hauling
MID 036 - CID 0111 - FMI 01Engine coolant level below normalCoolant loss from a leak, blown hose, head gasket seepage, or a faulty coolant level sensor/probe in the surge tankVisually inspect surge tank and cooling system for leaks, top up with correct coolant per spec, retest the level sensor circuit if the code persists after refill
MID 036 - CID 0190 - FMI 08Engine speed/timing sensor signal abnormal or erraticIncorrect sensor air gap, damaged timing/speed sensor, worn tone ring, or a loose or corroded sensor connectorCheck and reset sensor air gap to spec, inspect sensor and connector for damage or debris, replace the speed/timing sensor if the fault repeats
MID 036 - CID 0102 - FMI 04Boost/inlet manifold pressure sensor signal below normalOpen or shorted sensor circuit, disconnected sensor, or a failed boost pressure sensor affecting turbo/fuel control logicInspect sensor connector and wiring harness for damage or corrosion, check sensor supply voltage, replace the sensor if wiring tests good
MID 036 - CID 0105 - FMI 03Intake manifold air temperature sensor voltage above normalOpen circuit or short to power on the sensor signal wire, corroded connector, or a failed intake air temperature sensorCheck wiring and connector for an open or short to a power source, verify sensor resistance against spec, replace sensor if out of range
MID 036 - CID 0041 - FMI 038-volt sensor supply voltage above normalShort to a power source on the shared sensor reference circuit, often traced through one of the sensors fed by this supplyDisconnect sensors on the 8-volt circuit one at a time to isolate the shorted branch, repair or replace the faulty sensor or harness section
MID 036 - CID 0168 - FMI 01System/battery voltage below normalWeak or discharged batteries, loose or corroded battery cables, failing alternator, or excessive parasitic drawLoad-test batteries and charging system, clean and tighten battery terminals and ground straps, repair or replace the alternator if charging output is low

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

AD55 attachments & work tools

Dump body (standard)

Standard dump body rated about 26.9 m3 (35.2 yd3) heaped SAE 2:1. It is pin-mounted to the frame and raised by the hoist cylinders as part of the truck, not fitted as a swappable work tool the way a loader bucket is.

Dump body (high-capacity options)

Factory data lists larger optional dump bodies at roughly 33.8 m3 (44.2 yd3) and 36.6 m3 (47.9 yd3) heaped. Body size is picked against haul-road grade, material density, and drift dump-point clearance, not a universal upgrade.

Ejector body

Optional ejector body pushes the full load out the back without raising the body, useful where back (roof) clearance in the drift is limited. It uses its own single-stage hoist/ejector cylinder arrangement and can be pulled off and replaced with a dump body at the dealer for site versatility.

Body mounting / changeover

There is no quick-coupler system for the body like on a loader or excavator. Dump and ejector bodies pin-mount to the chassis and connect to the hoist circuit; changeover is a workshop job using body-pin and hoist-cylinder support tooling, done by a technician rather than the operator.

Articulation hitch and oscillation

Center-pin articulation gives steering, and a rear-frame oscillating hitch keeps all wheels loaded on uneven drift floors. The frame uses a divergent box-section design to cut stress at the hitch area, paired with independent variable-rebound suspension cylinders front and rear.

Tires

Factory spec sheet lists 35 x 65 R33 as the fitted tire size for this class of underground truck. Some listings show 25 x 65 R33, which reads as a transcription variant of the same size — confirm actual fitment against the data plate or dealer order before ordering rubber.

Cab / ROPS-FOPS

Standard cab is ROPS/FOPS certified (ISO 3471/3449, SAE J1040/J231, AS2294.2/.3, EN13510/13627) on resilient mounts to isolate the operator from vibration. An optional sound-suppressed, pressurized, air-conditioned enclosed cab is offered for underground duty in place of the base canopy-style protection.

Braking / retarding system

Oil-cooled multi-disc brake package combines service, secondary, parking, and retarding functions in one integrated system, sized for steep grades and poor underfoot conditions. Automatic retarder control is standard, holding a set travel speed on descending grade without constant operator brake modulation.

Fire suppression and guarding package

Standard equipment includes switches for remote engine shutdown and fire-suppression activation; a portable fire extinguisher is commonly listed as fitted. Guarding items reported for this truck class include a bolt-on radiator guard, exhaust heat shielding at the firewall, and burst-protection sleeves on the hitch hydraulic hoses — exact package varies by series/configuration, confirm with the dealer order sheet.

All AD55 assemblies by section

Every catalogued assembly group for the Caterpillar AD55. Open an assembly to preview the parts inside — full OEM part numbers are available in Heavy Parts AI.

Air Inlet And Exhaust System
2077801 - Air Cleaner Gp
4w5160 - Air Cleaner Gp
2376520 - Air Cleaner Gp
2078299 - Connection Gp-Exhaust
2376519 - Connection Gp-Exhaust
2289284 - Connection Gp-Exhaust
1658152 - Connection Gp-Exhaust
1094202 - Elbow Gp-Air Inlet
2289292 - Exhaust Gp-Purifier
2389989 - Exhaust Gp-Purifier
2077803 - Exhaust Gp-Purifier
2376528 - Lines Gp-Air
2078290 - Lines Gp-Air
6el6841 - Lines Gp-Air
1141904 - Lines Gp-Air
2389432 - Manifold Gp-Exhaust
2246806 - Manifold Gp-Exhaust
2377715 - Shield Gp-Heat (Manifold & Turbocharger)
2253571 - Shield Gp-Heat (Manifold & Turbocharger)
1860675 - Turbocharger Gp
1831200 - Turbocharger Gp
Basic Engine
1339907 - Adapter Gp-Auxiliary Drive
13***07Adapter Group-Pump Drive; -Remote1
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1221248 - Base Gp-Valve Cover & Inj Harn
12***48Base Group-Valve Cover & Inj Harn1
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2073004 - Belt Tightener Gp
2167230 - Belt Tightener Gp
2250423 - Belt Tightener Gp
1859699 - Camshaft Gp
1459276 - Cover Gp-Cylinder Block
14***76Cover Group-Cylinder Block; -Remote1
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1076736 - Cover Gp-Cylinder Block
10***36Cover Group-Cylinder Block; -Remote1
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2356441 - Cover Gp-Cylinder Block
1596159 - Cover Gp-Front Housing
1777585 - Cover Gp-Front Housing
1871328 - Cover Gp-Valve Mechanism
1871326 - Cover Gp-Valve Mechanism
1503135 - Cover Gp-Valve Mechanism
1603913 - Crankshaft Gp
1550741 - Cylinder Block As
2352634 - Cylinder Block Gp
2811640 - Cylinder Head As
2635055 - Cylinder Head Gp
2434790 - Cylinder Head Gp
2345985 - Cylinder Head Gp
1769918 - Cylinder Head As
1835296 - Cylinder Head Gp
2073798 - Damper Gp
2073841 - Drive Gp-Fan
6i3638 - Drive Gp-Pump
6I***38Drive Group-Pump; -Fuel Transfer Pump1
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4p6846 - Fastener Gp-Front Housing
4P***46Fastener Group-Front Housing; -Remote1
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1093290 - Fastener Gp-Front Housing
10***90Fastener Group-Oil Pan; -Engine1
2P***05Bolt Tube Assembly To Turbocharger8
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1091657 - Fastener Gp-Valve Mechanism
1658106 - Flywheel Gp
1658107 - Gear Gp-Front
2064327 - Gear Gp-Rear
2074071 - Housing Gp-Flywheel
1658109 - Housing Gp-Front
1112088 - Lifting Gp-Engine
1270564 - Lifting Gp-Engine
1900009 - Valve Mechanism Gp
19***09Mechanism Group-Fuel Pump & Valve1
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2076746 - Mounting Gp-Alternator
2083029 - Mounting Gp-Engine (Rear)
2083030 - Mounting Gp-Engine (Front)
1093287 - Pan Gp-Oil
1343071 - Piston & Rod Gp
2352639 - Plug Gp-Cylinder Block
2345986 - Plug Gp-Cylinder Head
2077069 - Pulley Gp
2781929 - Rocker Arm Gp
1356425 - Support Gp-Engine
Braking System
2g6535 - Slack Adjuster Gp
2G***35Slack Adjuster Group; -Front Service Brake Lines1
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2071655 - Accumulator & Mounting Gp
2202720 - Accumulator Gp
1513044 - Brake Gp-Service & Parking
2072594 - Control Gp-Brake (Cab)
2072130 - Lines Gp-Brake
2072129 - Lines Gp-Brake
2072133 - Lines Gp-Brake (Front)
2072128 - Lines Gp-Brake (Rear)
2430122 - Lines Gp-Brake (Rear)
2460793 - Lines Gp-Brake (Front)
2073863 - Lines Gp-Brake (Pilot Supply)
2072126 - Lines Gp-Brake (Front)
2515441 - Lines Gp-Brake (Front)
6el4036 - Lines Gp-Brake (Rear)
2137079 - Lines Gp-Brake (Front)
2072127 - Lines Gp-Brake (Front)
2072587 - Lines Gp-Brake Bleeder (Front)
2130123 - Lines Gp-Brake Bleeder (Rear)
2136438 - Pump & Lines Gp-Brake Release
21***38Pump & Lines Group-Brake Release1
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1238915 - Pump Gp-Electric Drive
12***15Pump & Motor Group; -Engine Prelubrication1
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2136467 - Valve & Mtg Gp-Accum Charging
21***67Valve & Mtg Group-Accum Charging1
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2074079 - Valve & Mtg Gp-Accum Charging
20***79Valve & Mtg Group-Accum Charging1
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2072131 - Valve Gp-Brake
2137078 - Valve Gp-Retarder Control
2072132 - Valve Gp-Retarder Control
1555989 - Valve Gp-Solenoid
2034157 - Valve Gp-Solenoid
20***57Valve Group-Solenoid; -Hydraulic Lockout1
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Cooling System
2259652 - Coolant Conditioner Gp
2083939 - Drain Gp-High Speed Fluid (Radiator Evacuation)
2077804 - Fan Gp-Blower
2356472 - Fitting Gp-Radiator Vent
2622129 - Fitting Gp-Radiator Vent
2074686 - Lines Gp-Brake Oil Cooler (Rear)
2074685 - Lines Gp-Brake Oil Cooler (Front)
2191499 - Lines Gp-Brake Oil Cooler (Front)
2430123 - Lines Gp-Brake Oil Cooler (Rear)
2074684 - Lines Gp-Brake Oil Cooler (Front)
2074683 - Lines Gp-Brake Oil Cooler (Rear)
2254348 - Lines Gp-Turbocharger Water
2254341 - Lines Gp-Turbocharger Water
2389462 - Lines Gp-Turbocharger Water
2402858 - Lines Gp-Water
2075110 - Lines Gp-Water
2076736 - Lines Gp-Water
2075109 - Lines Gp-Water (Oil Cooler Bypass)
1745986 - Pump Gp-Water
1615719 - Pump Gp-Water
2477881 - Radiator Gp
2377877 - Radiator Gp
2083031 - Radiator Gp
2477876 - Radiator Gp-Basic
2083033 - Radiator Gp-Basic
2377875 - Radiator Gp-Basic
Electrical And Starting System
3e6328 - Alarm Gp
3E***28Alarm Group; -Caterpillar Monitoring System-Action1
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2072135 - Battery & Wiring Gp
2358183 - Control & Mtg Gp-Communication (Eam)
23***83Control & Mtg Group-Communication1
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1658116 - Control & Mtg Gp-Engine Elek
16***16Control & Mtg Group-Engine Elek1
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2083950 - Control & Mtg Gp-Tmsn Elek
2358185 - Control Ar-Communication (Eam)
23***83Control & Mtg Group-Communication1
23***84Wiring Group-Communication1
23***85Control Ar-Communication1
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2358182 - Control Gp-Communication (Eam)
2129450 - Control Gp-Engine Electronic
21***50Control Group-Engine Electronic1
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1364837 - Control Gp-Hoist Electronic
13***37Control Group-Hoist Electronic; -Positioning Lever1
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1729387 - Control Gp-Unprogrammed
17***87Control Group-Unprogrammed; -Traction Control-Transmission, Chassis-Integrated Brake1
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1742402 - Electrical Ar
17***02Electrical Ar1
20***71Sensor & Mounting Group1
20***25Wiring Group-Rear1
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2134939 - Electronics Gp-Monitor
21***83Software Group-Monitor1
21***39Electronics Group-Monitor1
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2374374 - Electronics Gp-Power Train
23***74Electronics Group-Power Train1
31***92Sfwr Group-A50071
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6de8927 - Horn Gp-Electric
2104767 - Horn Gp-Electric
3e6389 - Lamp Gp-Dome
3E***89Lamp Group-Dome; -With Switch-Cab, Rh, Lh1
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1623294 - Lamp Gp-Flood
16***94Lamp Group-Flood; -Rear-Ladder Access-Engine Work Light1
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1610908 - Lamp Gp-Head
1570305 - Lamp Gp-Head
1350426 - Lamp Gp-Signal
13***26Lamp Group-Signal; (24-Volt, Stop, Tail)(Stop/Tail)1
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1350427 - Lamp Gp-Signal
2162702 - Lighting Gp (Rh)
2076198 - Lighting Gp-Cab
2104765 - Lighting Gp-Front
2105722 - Lighting Gp-Rear
1173915 - Motor Gp-Elec Hyd Pump
11***15Motor Group-Electric; -Engine Prelubrication-Sec Steering, Brake Release1
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2331798 - Mounting Gp-Camera (Color)
2085079 - Mounting Gp-Camera (Color)
2086278 - Panel Gp-Circuit Breaker
1658108 - Sensor & Mounting Gp
2093871 - Sensor & Mounting Gp
2128446 - Sensor & Switch Gp
2192389 - Sensor Gp-Position
1377579 - Sensor Gp-Position
13***79Sensor Group-Position; -Hoist Control1
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2661466 - Sensor Gp-Position
26***66Sensor Group-Position; -Throttle1
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1267896 - Sensor Gp-Tmsn Position
12***96Sensor Group-Position; -Transmission Shift Lever1
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2160280 - Sensor Gp-Tmsn Position
21***80Sensor Group-Position; (Transmission Speed)1
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2101264 - Sensor Gp-Pressure
1638530 - Sensor Gp-Pressure
16***30Sensor Group-Pressure; -Atmospheric Air1
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2142484 - Sensor Gp-Speed
21***84Sensor Group-Speed; -Timing, Crankshaft1
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7t0794 - Starting Motor Gp-Electric
2071556 - Starting Motor Gp-Electric
20***56Starting Motor Group-Electric; (24-Volt)1
20***57Starting Motor Group-Electric1
6V***90Starting Motor Group-Electric; (Delco Remy)1
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2071557 - Starting Motor Gp-Electric
8c3644 - Starting Motor Gp-Electric
8C***44Starting Motor Group-Electric; Starting Motor Gp - Electric1
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9x4452 - Starting Motor Gp-Electric
9X***52Starting Motor Group-Electric; Electric Starting Motor Group (Nippondenso)1
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1209099 - Starting Motor Gp-Electric
12***99Starting Motor Group-Electric1
20***56Starting Motor Group-Electric; (24-Volt)1
20***64Starting Motor Group-Electric1
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6v0890 - Starting Motor Gp-Electric
6V***90Starting Motor Group-Electric; (Delco Remy)1
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2071564 - Starting Motor Gp-Electric
7n0718 - Switch As-Disconnect
7N***18Switch As-Disconnect; -Battery-Ground Level1
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2286146 - Switch Gp-Brake (Pull To Engage Parking)
2289672 - Switch Gp-Brake (Push To Engage Parking)
2084004 - Switch Gp-Brake (Pull To Engage Parking)
1346054 - Switch Gp-Flow
3162993 - Switch Gp-Magnetic
2543783 - Switch Gp-Magnetic
25***83Switch Group-Magnetic; -Main Relay-Main Power Relay1
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2244762 - Switch Gp-Shutdown (Ground Operated)
2104777 - Wiring Gp-Brake Release Pump
21***77Wiring Group-Brake Release Pump1
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2076265 - Wiring Gp-Cab (Upper)
2191804 - Wiring Gp-Cab (Lower)
2086281 - Wiring Gp-Cab (Lower)
2085078 - Wiring Gp-Camera
2358184 - Wiring Gp-Communication (Eam)
2077730 - Wiring Gp-Engine Electronic
2131481 - Wiring Gp-Fire Suppression
2106313 - Wiring Gp-Front
2430121 - Wiring Gp-Rear
2093925 - Wiring Gp-Rear
2106307 - Wiring Gp-Rear
Engine Arrangement
2063917 - Conversion Ar-Engine
16***06Flywheel Group1
17***85Cover Group-Front Housing1
20***17Conversion Ar-Engine1
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2354727 - Engine Ar-Complete
10***36Cover Group-Cylinder Block; -Remote1
10***82Fastener Group-Front Housing1
10***57Fastener Group-Valve Mechanism1
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1742396 - Installation Ar-Engine
17***96Installation Ar-Engine1
20***01Air Cleaner Group1
20***03Exhaust Group-Purifier1
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Frame And Body
2431347 - Body Ar-Ejector
24***11Film Group1
24***91Body Group-Ejector1
24***21Wiring Group-Rear1
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2130126 - Body Gp-Dump (36.6m3 Sae)
2240026 - Body Gp-Dump (33.7m3 Sae)
2083366 - Body Gp-Dump (32.6m3 Sae)
2083365 - Body Gp-Dump (26.9m3 Sae)
2429291 - Body Gp-Ejector
1742401 - Chassis Ar
14***52Cylinder & Mtg Group-Hoist1
17***01Chassis Ar1
20***84Hitch Group-Oscillating1
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2137069 - Cover Gp-Deck
2752859 - Cover Gp-Deck
2071659 - Cover Gp-Deck
2388881 - Cover Gp-Deck
2071661 - Fender Gp-Front (Rh)
2071660 - Fender Gp-Front (Lh)
2092220 - Fender Gp-Rear
2113341 - Filter Gp-Grease
2075142 - Fire Extinguisher Gp (9.0 Litre Foam)
2075116 - Fire Extinguisher Gp (9.0kg)
2075115 - Fire Extinguisher Gp (4.5kg)
2071664 - Frame Gp-Engine End
2274175 - Frame Gp-Nonengine End
2071663 - Frame Gp-Nonengine End
2071662 - Frame Gp-Suspension
2077805 - Guard Gp-Belt
2071665 - Guard Gp-Bottom
2144314 - Guard Gp-Camera
2191502 - Guard Gp-Condenser
2071667 - Guard Gp-Drive Shaft
2071666 - Guard Gp-Radiator
2079503 - Handhold Gp
2398584 - Handhold Gp
2064884 - Hitch Gp-Oscillating
2388882 - Hood Gp
6el3409 - Hood Gp
2273918 - Hood Gp
2133366 - Liner Gp-Body
2083368 - Liner Gp-Body
2083367 - Liner Gp-Body
2193029 - Liner Gp-Body
2083369 - Liner Gp-Body
2083370 - Liner Gp-Body
2114487 - Lines Gp-Central Lubrication (Hitch)
21***87Lines Group-Central Lubrication1
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2114566 - Lines Gp-Central Lubrication (Front)
21***66Lines Group-Central Lubrication1
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2114008 - Lines Gp-Central Lubrication (Rear)
21***08Lines Group-Central Lubrication1
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2114546 - Lines Gp-Central Lubrication (Rear)
21***46Lines Group-Central Lubrication1
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2075707 - Lines Gp-Fire Suppression (Auto Detonation)
2179344 - Lines Gp-Fire Suppression (Auto Detonation)
2075710 - Lines Gp-Fire Suppression (Retardant)
2240022 - Lines Gp-Fire Suppression (Dry Powder System)
2408763 - Lines Gp-Fire Suppression (Auto Detonation)
2428071 - Lines Gp-Fire Suppression (Retardant)
2074681 - Lines Gp-Grease (Fan Hub)
2083383 - Lines Gp-Lubrication (Bank 2)
2083386 - Lines Gp-Lubrication (Suspension)
2083381 - Lines Gp-Lubrication (Front)
2083384 - Lines Gp-Lubrication (Bank 3)
2430128 - Lines Gp-Lubrication (Bank 2)
2430813 - Lines Gp-Lubrication (Rear)
2083382 - Lines Gp-Lubrication (Bank 1)
2430129 - Lines Gp-Lubrication (Bank 3)
2430130 - Lines Gp-Lubrication (Bank 1)
2083380 - Lines Gp-Lubrication (Rear)
2083385 - Lines Gp-Lubrication (Bank 4)
2072586 - Link Gp-Steering Frame Lock
2083378 - Lubrication Ar-Automatic
18***54Pump Group-Lubrication1
20***78Lubrication Ar-Automatic1
20***80Lines Group-Lubrication1
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2114567 - Lubrication Ar-Central
20***86Lines Group-Lubrication1
21***08Lines Group-Central Lubrication1
21***87Lines Group-Central Lubrication1
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2273904 - Mounting Gp-Body
2086272 - Mounting Gp-Body
2105733 - Mounting Gp-Body
2072585 - Mounting Gp-Cab
2113336 - Pump Gp-Lubrication
1856454 - Pump Gp-Lubrication
2098846 - Step Gp (Transmission)
2075709 - Suppression Ar-Fire
20***07Lines Group-Fire Suppression1
20***09Suppression Ar-Fire1
20***10Lines Group-Fire Suppression1
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2161747 - Suspension Gp-Front
2072584 - Suspension Gp-Front
2453944 - Suspension Gp-Front
2423107 - Suspension Gp-Front
2072583 - Tread Gp-Nonskid
5t5010 - Valve Gp-Lube Distribution
5T***10Valve Group-Lube Distribution; -5-Injector1
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5t5009 - Valve Gp-Lube Distribution
5T***09Valve Group-Lube Distribution; -3-Injector-Steering Cyl, Linkage, Rh, Lh-Hoist, Rear Susp Cyl, Rh, Lh-Front Susp, Steer Cyl, Rh, Lh1
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8w2597 - Valve Gp-Lube Distribution
8W***97Valve Group-Lube Distribution; -4-Injector1
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Fuel System
2072136 - Adapter Gp-Fast Fill Fuel
2074622 - Filter Gp-Fuel
1658101 - Filter Gp-Fuel
2074643 - Filter Gp-Fuel
1288510 - Pump Gp-Fuel Injection
2113025 - Injector Gp-Fuel
2074663 - Lines Gp-Fuel
2072581 - Lines Gp-Fuel
2216720 - Lines Gp-Fuel
2433103 - Lines Gp-Fuel
1504279 - Pump & Mtg Gp-Fuel Transfer
1659154 - Pump Gp-Fuel Priming
16***54Pump Group-Fuel Priming; -Manual1
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2215512 - Tank & Mtg Gp-Fuel
2072588 - Tank & Mtg Gp-Fuel
2336742 - Valve Gp-Check
23***42Valve Group-Check; -Fuel Filter1
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Hydraulic System
9g9288 - Cover Gp-Hydraulic Tank Cap
9G***88Protection Cover Group; -Hydraulic Tank-Steering Tank Fill Cap-Hydraulic Tank Fill Cap1
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1185081 - Actuator Gp-Pilot Control
11***81Actuator Group-Pilot Control; -Auxiliary Dual Stage, Hoist1
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2074087 - Block Gp-Hydraulic
2074088 - Block Gp-Hydraulic (Rear)
2074078 - Block Gp-Hydraulic
2074086 - Block Gp-Hydraulic (Front)
1383911 - Cover Gp-Hydraulic Tank Cap
2430860 - Cylinder & Mtg Gp-Ejector
1893826 - Cylinder & Mtg Gp-Ejector
1455252 - Cylinder & Mtg Gp-Hoist
2431351 - Cylinder & Mtg Gp-Tailgate
1455155 - Cylinder Gp-Hoist
14***55Cylinder Group-Hoist; -Telescoping1
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1868273 - Cylinder Gp-Tailgate
2072134 - Drain Gp-High Speed Fluid (Hyd Tank Evacuation)
2388888 - Drain Gp-High Speed Fluid (Hyd Tank Evacuation)
2074076 - Filter & Mtg Gp-Hydraulic
1567661 - Filter Gp-Hydraulic
15***61Filter Group-Hydraulic; (Hydraulic)1
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1325448 - Filter Gp-Hydraulic
13***48Filter Group-Oil; -Parking Brake Release1
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1742397 - Hydraulic Ar
17***97Hydraulic Ar1
20***32Lines Group-Steering1
20***59Lines Group-Steering Neutralizer1
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2432089 - Lines Gp-Ejector
2074084 - Lines Gp-Hoist
2074085 - Lines Gp-Hoist
2074083 - Lines Gp-Hydraulic (Hitch)
2430874 - Lines Gp-Hydraulic (Front)
2136468 - Lines Gp-Hydraulic (Pilot Supply)
2074089 - Lines Gp-Hydraulic (Pilot Supply)
2074082 - Lines Gp-Hydraulic Oil
2074081 - Lines Gp-Hydraulic Tank Vent
20***81Lines Group-Hydraulic Tank Vent1
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2430812 - Lines Gp-Tailgate
2063922 - Pump & Mtg Gp-Hydraulic
1865430 - Pump Gp-Gear
2391192 - Tank & Mtg Gp-Hydraulic
2074075 - Tank & Mtg Gp-Hydraulic
2074074 - Tank Gp-Hydraulic
2074667 - Valve & Mtg Gp-Control
1483530 - Valve Gp-Control
1285346 - Valve Gp-Pressure Reducing
12***46Valve Group-Pressure Reducing; -Cooler Flow-Low Pressure-High Pressure1
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2074080 - Valve Gp-Pressure Reducing
2225079 - Valve Gp-Pressure Reducing
1482962 - Valve Gp-Relief
14***62Valve Group-Relief; -Hoist High Pressure, Raise1
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1067372 - Valve Gp-Relief
10***72Valve Group-Relief; -Hoist Low Pressure, Lower1
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1528346 - Valve Gp-Control
15***46Valve Group-Solenoid; -Quick Coupler1
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Lubrication System
2083936 - Drain Gp-High Speed Fluid (Engine Sump Evacuation)
4n2481 - Fastener Gp-Oil Pump Mounting
4N***81Fastener Group-Oil Pump Mounting; Oil Pump Mounting Fastener Group1
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2073858 - Filler Gp-Oil
2398582 - Filter Gp-Engine Oil
1599362 - Fumes Disposal Gp
2120957 - Gauge Gp-Oil Level (Dipstick)
6el1633 - Gauge Gp-Oil Level (Dipstick)
2130117 - Lines Gp-Engine Oil
2074103 - Lines Gp-Engine Oil Drain
2149590 - Lines Gp-Turbocharger Oil
2389434 - Lines Gp-Turbocharger Oil
1614113 - Pump Gp-Engine Oil
Machine Arrangement
1742386 - Common Ar
17***86Common Ar1
17***96Installation Ar-Engine1
17***97Hydraulic Ar1
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Operator Station
2072996 - Air Conditioner Ar
20***93Lines Group-Air Conditioner1
20***94Lines Group-Air Conditioner1
20***95Compressor Group-Refrigerant1
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2072999 - Air Conditioner Gp
2072997 - Cab Ar-Enclosed Rops
20***90Cab Group-Enclosed Rops1
20***91Compartment Group-Literature1
20***97Cab Ar-Enclosed Rops1
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2072990 - Cab Gp-Enclosed Rops
2072991 - Compartment Gp-Literature
2072995 - Compressor Gp-Refrigerant
2166441 - Compressor Gp-Refrigerant
3e1906 - Compressor Gp-Clutch & Refrig
2385120 - Condenser & Mounting Gp
2240004 - Condenser & Mounting Gp
2098775 - Condenser & Mounting Gp
1877309 - Cover Gp-Seat
2414362 - Cover Gp-Seat (Companion)
2072988 - Door Gp-Cab
2072595 - Door Gp-Cab
2072987 - Door Gp-Storage
2073840 - Hammer & Mounting Gp
2092218 - Heater Ar-Cab
20***92Lines Group-Heater1
20***17Lines Group-Heater1
20***18Heater Ar-Cab1
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2082524 - Installation Gp-Radio
2076216 - Liner Gp-Cab
2072993 - Lines Gp-Air Conditioner
2385928 - Lines Gp-Air Conditioner
2217068 - Lines Gp-Air Conditioner
2072994 - Lines Gp-Air Conditioner
2072992 - Lines Gp-Heater
2092217 - Lines Gp-Heater
2072596 - Lines Gp-Washer
2075118 - Mirror Gp-Rear View
2274193 - Mirror Gp-Rear View
2274194 - Mirror Gp-Rear View
2075119 - Mirror Gp-Rear View
1666938 - Module Gp-Quad Gauge
1256806 - Module Gp-Speed/Tach Elek
12***06Module Group-Speedometer & Tach1
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2085084 - Monitor Ar-Camera (Crt)
20***02Harness As-Monitor1
20***78Wiring Group-Camera1
20***79Mounting Group-Camera1
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2273920 - Monitor Ar-Camera (Led)
20***02Harness As-Monitor1
20***78Wiring Group-Camera1
20***79Mounting Group-Camera1
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2331963 - Monitor Ar-Camera (Led)
21***14Guard Group-Camera1
22***66Monitor1
22***21Harness As-Power-Monitor1
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2289281 - Monitor Ar-Camera
20***02Harness As-Monitor1
20***78Wiring Group-Camera1
20***79Mounting Group-Camera1
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2331966 - Monitor Ar-Camera
21***14Guard Group-Camera1
22***66Monitor1
22***21Harness As-Power-Monitor1
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1477977 - Motor Gp-Window Wiper
14***77Motor Group-Window Wiper; -Front1
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2331885 - Mounting Gp-Camera Monitor
2085080 - Mounting Gp-Camera Monitor
2072998 - Operator Ar-Enclosed Rops
20***92Panel Group-Instrument1
20***94Control Group-Brake1
20***95Door Group-Cab1
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2191827 - Panel Gp-Instrument
2286148 - Panel Gp-Instrument
2072592 - Panel Gp-Instrument
2086282 - Pedal Gp-Throttle
2082502 - Pressurizer Gp
2082503 - Pressurizer Gp
1561148 - Seat Belt Gp
15***48Seat Belt Group; -Retractable-Operator1
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2072986 - Seat Gp-Companion
2253548 - Seat Gp-Suspension
2253559 - Seat Gp-Suspension
2253562 - Seat Gp-Suspension
2086279 - Support Gp-Seat
8r1774 - Bottle Gp-Window Washer
2154807 - Visor Gp-Cab
2286117 - Visor Gp-Cab
2073000 - Window Gp
2076236 - Wiper Gp-Window (Rear)
2076249 - Wiper Gp-Window (Front)
1010742 - Wiper Pivot Gp
10***42Wiper Pivot Group; (Front Window)1
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Power Train
9w4119 - Actuator Gp-Rotary
9W***19Actuator Group-Rotary; -Transmission Control Valve1
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1742399 - Axle Ar-Front
17***99Axle Ar-Front1
20***66Axle Group-Front1
20***68Mounting Group-Differential1
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1742400 - Axle Ar-Rear
17***00Axle Rear Axle1
20***65Axle Group-Rear1
20***67Mounting Group-Differential1
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2062766 - Axle Gp-Front
2430795 - Axle Gp-Rear
2062765 - Axle Gp-Rear
1858929 - Breather Gp-Axle
1934114 - Case & Parts Gp-Planetary
1414530 - Control Gp-Transmission
2072989 - Control Gp-Transmission
2269474 - Control Gp-Transmission Hyd
22***74Control Group-Transmission Hydraulic1
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1773897 - Differential & Bevel Gear Gp
17***97Differential & Bevel Gear Group1
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1378858 - Differential Gp
2072139 - Drain Gp-High Speed Fluid (Transmission Evacuation)
1749417 - Drive Gp-Input
2034004 - Filler Gp-Power Train Oil
2071671 - Filter & Mtg Gp-Transmission
20***71Filter & Mtg Group-Transmission1
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2071668 - Filter Gp-Transmission
2071670 - Filter Gp-Transmission
2441496 - Final Drive & Brake Gp
2168082 - Gauge Gp-Liquid Level
2071654 - Gauge Gp-Liquid Level
2063378 - Gear & Case Gp-Output Transfer
20***78Gear & Case Group-Output Transfer1
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2063915 - Lines Gp-Scavenge
2072138 - Lines Gp-Torque Converter
2072107 - Lines Gp-Transmission Oil
2453597 - Lines Gp-Transmission Oil
2071669 - Lines Gp-Transmission Oil
2071672 - Lines Gp-Transmission Oil
2072074 - Lines Gp-Transmission Oil
2062767 - Mounting Gp-Differential (Rear)
2062768 - Mounting Gp-Differential (Front)
1447263 - Mounting Gp-Rim
1372110 - Planetary Gp-Transmission
1742398 - Power Train Ar
14***30Control Group-Transmission1
17***98Power Train Ar1
17***99Axle Ar-Front1
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1850148 - Pump Gp-Gear
2261267 - Pump Gp-Gear
2109302 - Rim Ar
2109301 - Rim Gp-Demountable
2170452 - Shaft Gp-Drive
2072125 - Shaft Gp-Drive
2072116 - Shaft Gp-Drive
2072137 - Shaft Gp-Drive
2072113 - Shaft Gp-Drive
2072123 - Shaft Gp-Drive
2098849 - Shaft Gp-Drive
3q6837 - Shaft Gp-Main
2064885 - Support Gp-Transmission (Lower)
2072111 - Support Gp-Transmission (Upper)
2203533 - Tire Gp
22***32Tire 35/65r X 33ply * Rl4k 6s4
22***33Tire Group1
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2072982 - Tire Gp
2312485 - Tire Gp
23***84Tire 35/65/R33 Xldd 2a4
23***85Tire Group1
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2063147 - Torque Converter & Updrive Gp
20***47Torque Converter & Updrive Group1
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2063149 - Torque Converter Ar
15***74Kit-Adhesive1
20***07Plate-Serial; (Small)1
20***47Torque Converter & Updrive Group1
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1807973 - Torque Converter Gp
2063379 - Transmission Ar
2063148 - Valve & Mtg Gp-Relief
2101290 - Valve Gp-Lockup Clutch & Sol
21***90Valve Group-Lockup Clutch & Sol1
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8e4963 - Valve Gp-Selector & Press Cont
8p1471 - Valve Gp-Relief
8P***71Valve Group-Relief; -Torque Converter Outlet1
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9u8847 - Valve Gp-Selector & Press Cont
9U***47Valve Group-Selector & Press Cont; -Transmission1
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1938559 - Valve Gp-Solenoid
19***59Valve Group-Solenoid; -Transmission1
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8e4965 - Valve Gp
8E***65Valve Group-Transmission Control1
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Service Equipment And Supplies
2077806 - Film Gp
2385109 - Film Gp
2428711 - Film Gp
2264039 - Film Gp
2083942 - Frame Gp-Tire Installation
2610236 - Identification-Rim
26***33Rim Identification Plates4
26***36Identification-Rim1
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2133382 - Kit-Service (250 Hour)
13***73Element; (Filter) (Fuel/Water Separator) (Primary)1
14***84Kit-Fuel Filter & Waterseparator; (Incl Seal & Gasket)1
1R***49Filter-Fuel; (Advanced Efficiency)(Secondary)1
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2133380 - Kit-Service (3000 Hour)
13***12Filter-Oil; (Advanced Efficiency)2
13***73Element; (Filter) (Fuel/Water Separator) (Primary)1
1G***78Filter As-Oil; (Advanced Efficiency)(Hydraulic)2
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2133381 - Kit-Service (2000 Hour)
13***12Filter-Oil; (Advanced Efficiency)1
13***73Element; (Filter) (Fuel/Water Separator) (Primary)1
1G***78Filter As-Oil; (Advanced Efficiency)(Hydraulic)2
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2133378 - Kit-Service (Air Cleaner)
1N***64Filter Element As-Air; (Secondary)(Secondary)1
21***78Kit-Service1
4W***28Filter Element As-Air; (Primary)(Primary)1
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2133379 - Kit-Service (500 Hour)
13***12Filter-Oil; (Advanced Efficiency)2
13***73Element; (Filter) (Fuel/Water Separator) (Primary)1
1G***78Filter As-Oil; (Advanced Efficiency)(Hydraulic)2
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2133377 - Kit-Service (1000 Hour)
13***12Filter-Oil; (Advanced Efficiency)2
13***73Element; (Filter) (Fuel/Water Separator) (Primary)1
1G***78Filter As-Oil; (Advanced Efficiency)(Hydraulic)2
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2101752 - Lifting Gp-Axle
2210352 - Lifting Gp-Body
1905227 - Lifting Gp-Seat
2264041 - Plate & Film Gp
2072582 - Plate & Film Gp
2154818 - Plate-Identification (Machine)
2126102 - Pump & Lines Gp-Hydraulic (Portable)
2083944 - Stand Gp-Frame
2083943 - Stand Gp-Jack Hoist
2083945 - Template Gp-Window Glass
1869064 - Tool Gp-Diagnostic (Service Box)
2453084 - Tool Gp-Diagnostic (Camera Balun)
2132525 - Tool Gp-Installer (Hitch Bearing)
2306387 - Tool-Body Pivot Pin
2133369 - Tool-Wheel End Lifting
2083941 - Tools
18***64Tool Group-Diagnostic1
19***27Lifting Group-Seat1
1U***37Installer As-Seal1
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Steering System
2071658 - Cylinder & Mtg Gp-Steering
2071657 - Cylinder & Seal Gp-Steering
2071656 - Cylinder Gp-Steering
2073864 - Filter & Lines Gp-Steering
2063932 - Lines Gp-Steering
2191501 - Lines Gp-Steering
2073862 - Lines Gp-Steering
2073861 - Lines Gp-Steering Cylinder
2073859 - Lines Gp-Steering Neutralizer
20***59Lines Group-Steering Neutralizer1
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2073860 - Lines Gp-Steering Pilot
2185465 - Pump & Steering Column Gp
2075117 - Pump & Steering Column Gp
3g6856 - Pump Gp-Gear
3G***56Pump Group-Gear; -Secondary Steering1
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1198763 - Pump Gp-Metering
1534000 - Steering Column Gp
2185464 - Steering Column Gp
2075708 - Valve & Mtg Gp-Steering
2063930 - Valve & Mtg Gp-Steering
9j8225 - Valve Gp-Relief
8j6099 - Valve Gp-Diverter
8J***99Valve Group-Diverter; -Secondary Steering1
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8j1553 - Valve Gp-Steering Neutralizer
8J***53Valve Group-Neutralizer; -Command Control Steering1
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8j2318 - Valve Gp-Steering
8J***18Valve Group-Steering; -Wheel Steering1
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AD55 serial number reference

On the AD55 the PIN plate is mounted on the front frame near the articulation hitch/cab step area (standard Cat practice for underground articulated trucks); a duplicate machine ID is also typically on the frame rail under the hood near the engine. The plate reads as an 8-character PIN: the first 3 characters are the letter prefix identifying the model/series and build plant, followed by a sequential unit number for that series (e.g., GNW00001 and up).

PrefixIdentifies
ANWFirst-generation AD55, original release
DNWMid-run AD55, second serial series
GNWCurrent/updated AD55 serial series

Frequently asked questions

What engine does the Caterpillar AD55 use?

The base AD55 uses a mechanical Cat C18 DITA ATAAC diesel, carried over from the earlier 3456 engine family, rated at 485 kW (650 hp) gross power and about 460 kW (617 hp) net, paired with a seven-speed power-shift transmission. The follow-on AD55B switched to a Cat C27 ACERT rated 579-600 kW (776-805 hp) gross. Confirm which generation you have from the serial prefix and data plate before ordering engine parts.

What is the AD55's operating weight?

Nominal payload is 55,000 kg (121,254 lb). Empty/tare weight runs close to 47,000 kg (103,600 lb), which puts loaded gross operating weight at roughly 100,000-105,000 kg (220,000-231,000 lb) depending on dump body style and tire spec. Treat exact figures as varying by configuration.

What replaced the Caterpillar AD55?

Caterpillar replaced the AD55 with the AD55B in 2008, carrying the same roughly 55-tonne payload class forward on the more powerful C27 ACERT engine and moving service points to ground level. The line was later extended by the 60-tonne AD60, which succeeded the AD55B as Caterpillar's largest underground truck.

What AD55 owners discuss

What engine and transmission does the base AD55 actually run, and how does that differ from the AD55B?
The base AD55 is built around the Cat 3456E electronic engine, the same block later re-branded C18 DITA ATAAC once Cat moved to C-series naming, rated around 485 kW (650 hp) gross. It pairs with a seven-speed planetary power shift transmission and Cat's mechanical drivetrain, with an 18% torque rise that cuts down-shifting on grade. The later AD55B stepped up to the larger Cat C27 ACERT engine, rated well past 700 hp depending on gear range and configuration. The model name alone doesn't tell you which engine family you have. Confirm off the machine's serial prefix before ordering engine parts or pulling service literature, and don't mix fluid specs or fault-code lists between the two generations.
How does the braking and retarding system behave, and what should owners watch for?
The AD55 uses a four-corner oil-cooled brake (OCB) package. Modulated hydraulic pressure drives both the service brakes and the retarder, and the parking brake is spring-applied, hydraulic-released, so it defaults to on if hydraulic pressure is lost. Oil-cooled brakes run cooler and last longer than dry-disc setups on grade-heavy underground haul routes, but they depend on clean brake cooling oil at the correct level. A low or contaminated circuit shows up first as climbing brake oil temperature on the gauge, then glazed discs if ignored. Routine oil sampling on the brake circuit catches contamination before it turns into a disc job. Because this is a life-safety system, have your dealer verify brake oil condition and cooling flow at every scheduled interval.
What undercarriage and articulation wear patterns are typical for this machine?
As with other Cat articulated haulers, the center articulation joint and the steering cylinder pins and bushings are usually the first things to develop play with hours. A rocking or sloppy feel when the front frame is rocked side to side, or oil weeping at the hitch, is the early warning. Axle rubber mounting blocks harden and crack over time; once the rubber lets go, the axle can shift under load and cause uneven tire wear. This wear pattern isn't unique to the AD55, it shows up across the whole articulated-truck family, but the tight-radius turns and confined haul roads typical of underground tramming accelerate it compared to surface duty. Have your dealer verify articulation and steering-cylinder pin wear against tolerance rather than waiting for it to show up as a steering symptom.
Are there known electrical or sensor quirks with the 3456E's engine control in underground service?
The 3456E runs Cat's electronic engine management: self-diagnosing sensors feed the ECM, which adjusts fueling and protects the engine against overspeed and overtemperature conditions. The recurring complaint in underground service isn't the control logic itself, it's the wiring. Dust, moisture, and constant vibration degrade sensor harness connections faster underground than on surface duty, and that shows up as intermittent derates or fault codes that clear themselves before a technician can catch them. Clean and re-seat connectors and inspect harness runs near the engine and transmission for chafing before condemning a sensor. That resolves a large share of these intermittent-fault complaints.
What hydraulic dump-body issues come up with heavy cycling?
Hoist cylinder seals wear from constant heavy-load cycling, and in a dusty underground pit that dust works past the rod wiper faster than in cleaner surface conditions. The tell is a body that creeps down slowly when parked raised, or a jerky lift instead of smooth travel. Keeping the hoist cylinders and pins greased on schedule, and not leaving the body raised under load longer than necessary, is what operators consistently point to as the biggest factor in extending seal life on this class of hauler.
Does the underground operating environment create engine or filtration issues specific to this truck?
Running a turbocharged, air-to-air aftercooled diesel in a confined underground pit means dust ingestion and heat rejection are constant concerns. Filters load up faster underground than on surface jobs because of the confined ventilation and steady dust, so air filter service intervals are commonly shortened from the standard surface-duty schedule rather than run to the book number. Adequate mine ventilation also matters for keeping intake air temperature and exhaust levels in check; engines running in poorly ventilated headings tend to show more frequent turbo and cooling complaints than the same engine on a well-ventilated haul route. This is an operating-environment factor as much as a machine flaw.
What should you check when buying a used AD55?
First confirm the engine and transmission generation off the serial prefix, since AD55 spans the 3456E/C18-era driveline and the later AD55B's C27 ACERT, and parts and service data aren't interchangeable. Rock the front frame side to side and have someone watch the articulation joint and steering cylinder pins for play. Check brake oil condition and level in the oil-cooled brake circuit, and look for signs of overheating like discoloration around the brake housings. Inspect the dump body hoist cylinders for drift when raised and unloaded, and check axle rubber mounting blocks for cracking or separation. Pull fault code history if the display allows it, and check for a pattern of recurring derates that could point to chronic harness or filtration issues rather than a one-off failure. Given the safety systems involved, have your dealer verify brake, steering, and articulation condition against factory tolerance before you commit to a purchase.

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

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