Caterpillaroff-highway truckquarry truck
Caterpillar 775B
Maintenance schedule, common problems & OEM parts breakdown
The Caterpillar 775B is a rigid-frame, mechanical-drive off-highway haul truck built for quarry and surface-mining work in the 65-70 ton class. It runs a Cat 3412 DITA V12 diesel, mechanically governed and turbocharged, rated 485 kW (650 hp) gross from 27.0 L displacement, paired with a 6-speed automatic powershift transmission under EPTC II electronic shift and retarder control. Operating weight lands around 42.3 t (93,325 lb) empty, with rated payload running roughly 59-65 t depending on body and application. Cat built the 775B from about 1992 to 1996 on the same rigid-truck platform lineage as the 771C, 773B, 777B, and 777C, offered with dual-slope quarry, flat-floor, and wear-liner body options plus bare-chassis and special-application configurations.
The 775B sits at the end of Cat's mechanically governed truck generation for this platform. Its successor, the 775D, kept the same chassis footprint but switched to the electronically governed 3412E engine, and later 775E and C27-powered 775F/775G models added full electronic engine and transmission management. That makes the 775B the simplest, most mechanically transparent truck in the family: fewer sensors and control modules, a rebuildable mechanical governor and injection pump, and drivetrain components that interchange heavily with 773B and 777B siblings. In the used and parts market, that simplicity plus a widely supported 3412 engine keeps 775B trucks viable rebuild-and-resell candidates for quarries and remote sites still running mechanically governed fleets.
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 775B specifications
Engine
| Engine model | Cat 3412 DITA - V12, direct injection, turbocharged, aftercooled |
| Gross power | 485 kW (650 hp), one rating across the production run |
| Displacement / configuration | 27.0 L (1,649 cu in), 12 cylinders, 65-degree V12, bore 137 mm x stroke 152 mm (5.40 in x 6.00 in) |
| Emissions tier | Not emissions-tiered. Built before U.S. EPA Tier 1 nonroad standards took effect; mechanically governed, pre-ECM fuel system |
Weights
| Operating weight (empty) | approx. 42.3 t (93,325 lb) per factory spec plate |
| Rated payload | approx. 59-60 t (65 tons) |
| Body (dump) capacity, heaped | approx. 39-40 m3 (51.4 yd3), single-slope body for quarry duty |
Dimensions
| Overall length | 9.32 m (30 ft 7 in) |
| Overall width | 4.93 m (16 ft 2 in) |
| Overall height | 4.32 m (14 ft 2 in) |
| Standard tire size | 24.00-R35 radial |
Performance
| Transmission | 6-speed automatic powershift |
| Braking / retarding system | EPTC II electronic brake and retarder control. Front dry-disc brakes; rear oil-cooled multiple-disc brakes double as service brake, retarder, and parking brake |
| Travel speed | Not documented for this configuration in available public sources - confirm against OEM literature or a dealer for the specific serial range |
Service capacities (summary)
| Fuel, hydraulic, engine oil, cooling capacities | Not reliably documented for this vintage configuration in available public sources. Capacities can vary by serial-number breakpoint - confirm against the factory service manual for the specific unit |
Values vary by configuration, region, and serial range — confirm against your machine before planning transport or lifts.
775B fluids & capacities
| System | Capacity | Recommended fluid |
|---|---|---|
| Engine crankcase (with filter) | Exact refill volume not published in accessible reference material for this serial range. Cat 3412-family mechanical engines in this truck class typically run in the 76-95 L (20-25 US gal) band with a filter change; confirm against the O&M manual for the specific serial prefix. | Cat DEO (Diesel Engine Oil), API CF-4/CG-4 performance level. SAE 15W-40 for temperate-to-hot ambient; SAE 10W-30 where ambient regularly falls below 0 C (32 F) for easier cold starts. |
| Cooling system | Exact refill volume not documented for the 775B specifically in available sources; comparable 3412-powered rigid trucks of this weight class generally fall in the 100-190 L (25-50 US gal) range. Varies by configuration/radiator option - verify with dealer or the machine's own OMM. | Cat DEAC (Diesel Engine Antifreeze/Coolant), heavy-duty ethylene-glycol coolant with supplemental coolant additive, as originally specified for this engine generation. Cat ELC (Extended Life Coolant) is the current factory-approved refill/conversion option for extended service life. |
| Fuel tank | Exact capacity not documented for the 775B specifically in available sources; sized to the truck's duty cycle for its 65-ton class. Verify with dealer or the machine's own OMM. | No. 2-D diesel fuel meeting Cat's specified cetane and sulfur limits for this engine generation. No branded lubricant applies. |
| Transmission / torque converter (powershift, includes sump) | Exact refill volume not documented for the 775B specifically in available sources. Varies by configuration - verify with dealer or the machine's own OMM. | Cat TDTO (Transmission and Drive Train Oil), TO-4 performance spec. Viscosity grade selected by ambient temperature per Cat's TDTO chart (SAE 10W for cold starts, SAE 30 or 50 in sustained hot climates). |
| Differential and final drives, rear (combined) | Exact refill volume not documented for the 775B specifically in available sources. Varies by configuration - verify with dealer or the machine's own OMM. | Cat TDTO, TO-4 performance spec - shared fluid family with the transmission and the wet, oil-cooled rear disc brakes on this truck platform. |
| Brake / hoist / steering hydraulic system (includes tank) | Exact refill volume not documented for the 775B specifically in available sources. Varies by configuration - verify with dealer or the machine's own OMM. | Cat TDTO, TO-4 performance spec - same oil family used across the transmission and final-drive/brake circuits on this truck class, consistent with Cat's shared-reservoir design for off-highway trucks of this era. |
| Grease (chassis lubrication points) | Spec only - no refill capacity applies. | Cat Multipurpose Grease for general chassis points; Cat Advanced 3Moly Grease for heavily loaded pins and bushings. Select NLGI grade by ambient temperature per the standard Cat grease chart. |
Capacities are refill values from factory literature — always fill to the dipstick/sight gauge, not the number.
Caterpillar 775B 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 775B beyond the schedule
Predictive Maintenance & Fluid Analysis
The 775B predates onboard diagnostics, so fluid analysis is the main early-warning system. Pull oil samples on the engine, EPTC II transmission, and rear oil-cooled brake oil at every 250-hour service to catch governor and injection-pump wear, clutch-pack degradation, and brake-disc wear metal before failure. Trend turbocharger boost and coolant condition manually, since the mechanical governor and gauge cluster give no electronic alerts. Track final-drive and differential oil samples closely; they carry the entire drivetrain load on this rigid, non-electric-drive chassis.
Corrective & Common Repairs
Expect EPTC II wiring-harness connector corrosion and weak chassis grounds causing erratic shifts or lost retarder function, a known weak point on this control generation. Front dry-disc brake pads and rear oil-cooled disc plates wear steadily under quarry duty cycles and need regular thickness checks. Hoist cylinder seals leak after repeated dump cycles on the single-stage hoist. Mechanical governor linkage and injection pump timing drift with hours, causing surging or power loss. King pins and steering knuckle bushings wear from constant loaded turning on the rigid frame.
Overhaul & Rebuild Points
Mid-life rebuilds on the 3412 DITA typically target injectors, turbochargers, and valve train before a full in-frame overhaul. Torque converter and transmission clutch packs wear from constant powershift cycling under load and are candidates for periodic rebuild. Hoist cylinders need reseal or rebore after years of dump-cycle wear. Planetary final drives and the differential carry the full driven-axle load and need inspection for gear and bearing wear. Frame rails and hoist-cylinder trunnion mounts on the rigid chassis should get structural crack inspection at major overhaul intervals.
Seasonal & Environment Servicing
Quarry and mine dust is the 775B's biggest environmental threat; protect the twin-turbo intake and radiator/charge-air cooler cores with frequent cleaning in dry, dusty pits. Cold climates need starting aids, since the mechanical governor and injection pump have no electronic cold-start assist beyond ether or glow systems. Keep coolant at correct freeze-protection concentration and check corrosion inhibitor levels each season. High-ambient quarry work drives tire heat buildup on the 24.00-R35 tires; watch inflation and load cycling closely in hot climates.
775B common service parts
| Part number | Part | Notes | |
|---|---|---|---|
| 1R-0749 | Filter-Fuel | Fuel system service | Check fitment → |
| 129-0372 | Filter As-Water Sep & Fuel | Fuel system service | Check fitment → |
| 6I-2505 | Filter Element As-Air | Air intake service | Check fitment → |
| 6I-2506 | Filter Element As-Air | Air intake service | Check fitment → |
| 1R-1808 | Filter As-Engine Oil | Lubrication service | Check fitment → |
Always confirm against your machine's serial number — cross-check any part in Heavy Parts AI before ordering.
775B fault codes & troubleshooting
| Code | Meaning | Likely cause | What to do |
|---|---|---|---|
| 672-08 (Torque Converter Output Speed Sensor – Abnormal Frequency) | EPTC II loses a valid signal from the transmission input speed sensor (Cat labels this sensor 'torque converter output speed sensor'). | Damaged or worn sensor, loose or corroded connector, damaged harness, or debris on the sensing gear. | Check sensor air gap and connector condition, inspect wiring for chafing or breaks, replace the sensor if the signal stays erratic. |
| 191-08 (Transmission Output Speed Sensor – Abnormal Frequency) | EPTC II loses a valid transmission output speed signal; the control can hold a fixed gear or restrict shifting until the fault clears. | Failed sensor, damaged harness, or a loose connector at the output speed sensor. | Inspect sensor wiring and connector, verify sensor gap, replace the sensor if it will not produce a clean signal. |
| 177-00 (Transmission Oil Temperature – Above Normal Range) | Transmission/torque converter oil temperature has exceeded the EPTC II high-temperature threshold. | Low oil level, plugged oil cooler, extended low-gear or retarder use, or a weak cooler fan. | Check transmission oil level and cooler for blockage, let the machine cool, reduce sustained low-gear/retarder operation, and recheck. |
| 127-01 (Transmission Oil Pressure – Below Normal Range) | EPTC II control/lube oil pressure has dropped below the acceptable minimum. | Low oil level, restricted filter, worn transmission charging pump, or a faulty pressure sensor. | Check oil level and filter condition first, then confirm actual pump pressure with a gauge before replacing the sensor. |
| 296-09 (Transmission/Chassis ECM – Abnormal Update Rate) | The EPTC II transmission/brake control module has stopped communicating on the Cat Data Link. | Blown fuse, ECM power or ground fault, or damaged data link wiring/connector. | Check ECM power and ground circuits, then inspect the data link harness and connectors for damage or corrosion. |
| 247-09 (SAE J1939 Data Link – Abnormal Update Rate) | Companion code confirming lost communication with another control module on the machine data link; always appears paired with the specific module code (for example 296-09 for the transmission ECM). | Same root cause as the paired module code — wiring, connector, power, or ground fault on the data link. | Diagnose the paired primary module code first, then repair the shared data link wiring or connectors. |
| Engine coolant temperature high (dash warning lamp, no CID/FMI code) | Dash warning lamp and gauge flag jacket water temperature above the safe operating range. | Low coolant level, blocked radiator core, fan drive fault, or a stuck thermostat. | Idle down and stop, check coolant level and radiator for debris, inspect the fan drive and belt before continuing. |
| Engine oil pressure low (dash warning lamp, no CID/FMI code) | Dash warning lamp and gauge flag engine oil pressure below the safe minimum on the mechanically governed 3412 DITA. | Low oil level, plugged oil filter, worn oil pump, or a failed pressure sending switch. | Shut the engine down immediately, check oil level, look for external leaks, and verify pressure with a mechanical test gauge before restarting. |
Codes and remedies are general guidance for this model family — always confirm with diagnostic tooling and your dealer before major repairs.
775B attachments & work tools
Engine and hydraulic power source
The 775B is powered by the Cat 3412 DITA V12 diesel, rated near 485 kW (650 hp) gross, driving engine-mounted pumps for the body-hoist and steering circuits. This is the correct powerplant for the 775B generation; later 775D/E/F and the current-generation 775 use different engines (3412E, C27, or C32) and their hydraulic-kit or body-option data does not carry over to the 775B.
Dump body style (primary work tool)
The dump body is this truck's main configurable work tool, set at build time rather than swapped in the field. Documented 775B units carry a single-slope quarry body on a Hardox 400 steel flat floor, rated near 39 m3 (51 yd3) struck; payload is reported in a 59-64 t (65-70 ton) range depending on configuration/series and dealer spec sheet.
Alternate body configurations for this size class
Trucks in the 775 payload class are also offered with dual-slope bodies for steep haul-road profiles and flat-floor (X-body) designs for metering material into a crusher, as alternatives to a single-slope quarry body. Body choice is matched to material and haul profile at order time, not changed as a field attachment.
Wear liners
Bolt-in rubber or steel impact liners are offered for the body floor and sides to protect structure in high-impact, hard-rock or abrasive material work. Liners are an option across dual-slope and flat-floor bodies in this class rather than standard equipment.
Sideboards and tail extensions
Bolt-on steel sideboards and tail extensions raise heaped capacity when hauling lower-density material such as coal or overburden, and help control spillage over the tailgate and sides. These mount to the standard body structure and are offered across dual-slope, flat-floor, and quarry body styles in this class.
Body mounting and hoist system
The body pivots on pins at the rear of the main frame and is raised and lowered by hydraulic hoist cylinders fed from an engine-driven pump. There is no quick-coupler system as used on loader or excavator work tools; body style is fixed at build or rebuild, not changed in the field.
Cab and structure guarding
Standard cab on this unit is a sound-suppressed ROPS structure. A FOPS canopy is a common option for trucks working under a loading shovel or front loader face to guard the cab against falling rock, with class-level protection referencing ISO rollover and falling-object structure standards where fitted.
Brakes and retardation
Factory brakes documented on this unit are oil-cooled multiple-disc units at the rear axle, paired with the 6-speed powershift automatic transmission's electronic control (EPTC II) for engine/transmission retarding on grade. This is standard drivetrain equipment for the class, not an add-on attachment.
Tires
Trucks in the 775 payload class commonly run single (non-dual-mounted) radial OTR tires sized around 24.00-R35 for this tonnage class. Exact factory tire fitment for the 775B specifically was not independently confirmed and should be checked against the unit's data plate or tire supplier.
All 775B assemblies by section
Every catalogued assembly group for the Caterpillar 775B. Open an assembly to preview the parts inside — full OEM part numbers are available in Heavy Parts AI.
Air Inlet And Exhaust System
6i-2588 Air Cleaner Gp
| 10***50 | Film; (Air Cleaner) (Radial Seal) (On Air Cleaner Cover) | 1 |
| 6I***05 | Filter Element As-Air; -Primary | 1 |
| 6I***06 | Filter Element As-Air; -Secondary | 1 |
7c-4782 Air Cleaner Gp
| 10***66 | Gasket | 2 |
| 15***14 | Precleaner Group; -Air Cleaner | 2 |
| 6I***86 | Air Cleaner Group; -Rh | 1 |
6i-2586 Air Cleaner Gp
| 10***50 | Film; (Air Cleaner) (Radial Seal) (On Air Cleaner Cover) | 1 |
| 6I***05 | Filter Element As-Air; -Primary | 1 |
| 6I***06 | Filter Element As-Air; -Secondary | 1 |
129-6836 Aftercooler Gp-Water
| 0L***43 | Bolt 63.5 mm (3/8" X 2 1/2" -Cover Assembly To Fender | 2 |
| 0S***71 | Screw,Cap,Hexagon; Tube Assembly To Turbocharger And Elbow Mounting | 20 |
| 0S***90 | Bolt; (3/8-16x2in)(Clip Thru Spacer To Bracket As) | 2 |
103-4052 Cartridge Gp-Turbocharger
| 10***52 | Cartridge Group-Turbocharger | 1 |
| 10***25 | Nut; (3/8-24-Thd) | 1 |
| 13***17 | Shaft As-Turbine | 1 |
321-6724 Conversion Gp-Air Inlet & Exh
| 14***33 | Lines Group-Air; -Intake | 1 |
| 14***34 | Lines Group-Air; -Intake | 1 |
| 14***35 | Lines Group-Air; -Turbocharger Exhaust | 1 |
129-6832 Lines Gp-Air -Turbocharger Inlet
| 11***23 | Tube As-Turbocharger; (Lh) | 1 |
| 11***35 | Pipe-Turbocharger Outlet | 1 |
| 12***32 | Lines Group-Air; -Turbocharger Inlet | 1 |
142-4033 Lines Gp-Air -Intake
| 12***42 | Tube As | 1 |
| 12***71 | Tube | 1 |
| 12***72 | Tube | 1 |
142-4034 Lines Gp-Air -Intake
| 10***68 | Plate As | 4 |
| 10***01 | Manifold As | 1 |
| 12***39 | Tube As | 1 |
142-4035 Lines Gp-Air -Turbocharger Exhaust
| 0S***19 | Bolt,Machine Gear Retaining Part Of Kit P/N 1w***46 | 4 |
| 12***08 | Elbow-Exhaust | 1 |
| 14***35 | Lines Group-Air; -Turbocharger Exhaust | 1 |
164-4603 Manifold Gp-Exhaust
| 10***12 | Spacer; (11.13x19.05x53-mm Thk) | 20 |
| 11***23 | Spacer; (11.13x19.05x19-mm Thk) | 4 |
| 12***52 | Gasket-Exhaust Manifold | 12 |
150-1714 Precleaner Gp -Air Cleaner
| 15***14 | Precleaner Group; -Air Cleaner | 1 |
| 2S***93 | Precleaner Cover Assembly | 1 |
| 2S***08 | Collector-Dust; (Air Precleaner) | 1 |
116-4120 Turbocharger Gp
| 10***52 | Cartridge Group-Turbocharger | 1 |
| 10***98 | Housing (Turbin) | 1 |
| 11***20 | Turbocharger Group | 1 |
129-6835 Turbocharger Gp
| 11***20 | Turbocharger Group | 2 |
| 12***35 | Turbocharger Group | 1 |
| 1S***95 | Gasket-Turbocharger To Manifold; Gasket Turbocharger To Manifold | 2 |
Basic Engine
6n-2415 Gear Gp-Rear
| 0L***70 | Bolt (2-1/4") Filler Tube Assembly To Transfer Drive Case | 2 |
| 0S***94 | Bolt (1 In. Long 3/8 In. Dia.); Plate Assembly To Support Assembly | 5 |
| 16***81 | Seal-Lip Type | 1 |
4n-3825 Gear Gp-Rear
| 1B***75 | Bolt (" " " ); Bolt ( " " " ) | 4 |
| 4N***25 | Gear Group-Rear; Rear Timing Gear Group | 1 |
| 4W***85 | Gear-Camshaft; (86-Teeth) | 1 |
4n-6842 Air Compressor Gp
| 0L***51 | Bolt Starting Engine Fuel Tank Bracket To Diesel Intake Manifold | 5 |
| 12***48 | Seal-Integral | 1 |
| 1F***58 | Nut-Full; (1/2-13-Thd)(Air Lines) | 3 |
4n-7378 Air Compressor Gp
| 0S***19 | Bolt,Machine Gear Retaining Part Of Kit P/N 1w***46 | 6 |
| 11***37 | Kit-Piston Ring; (Compressor 5 Ring) | 1 |
| 1W***03 | Plug | 2 |
108-1553 Camshaft Gp
| 0S***09 | Bolt (3/4") Filler Tube Assembly To Transfer Drive Case | 2 |
| 10***74 | Gear-Camshaft Drive; (86-Teeth) | 1 |
| 10***53 | Camshaft Group | 1 |
129-5229 Cover Gp-Cylinder Block
| 0S***94 | Bolt (1 In. Long 3/8 In. Dia.); Plate Assembly To Support Assembly | 5 |
| 12***29 | Cover Group-Cylinder Block | 1 |
| 1A***29 | Bolt (1-1/8") Tube Assembly To Transfer Drive Case | 8 |
131-2002 Cover Gp-Flywheel Housing
| 0S***66 | Bolt-Pulley To Crankshaft Adapter | 3 |
| 0S***94 | Bolt (1 In. Long 3/8 In. Dia.); Plate Assembly To Support Assembly | 3 |
| 0S***19 | Bolt,Machine Gear Retaining Part Of Kit P/N 1w***46 | 1 |
126-0768 Cover Gp-Front Housing
| 0L***52 | Capscrew (3/8 - 16 Nc X 3 1/4 Gd8, Hex) | 6 |
| 0S***94 | Bolt (1 In. Long 3/8 In. Dia.); Plate Assembly To Support Assembly | 3 |
| 11***21 | Support-Housing; (Rh) | 1 |
129-6830 Cover Gp-Oil Pan -Engine
| 0S***87 | Bolt-Bracket Assembly To Timing Gear | 2 |
| 0S***88 | Bolt,Machine; Hose Assembly Mounting,Hose Assembly To Transmission,And To Torque Converter | 4 |
| 10***39 | Plug-Drain; (Engine Oil Pan) | 1 |
138-6642 Cover Gp-Valve Mechanism
| 10***88 | Base-Valve Mechanism Cover | 6 |
| 11***84 | Cover-Valve Mechanism | 2 |
| 11***15 | Cover As-Valve | 4 |
213-3202 Crankshaft As
| 15***40 | Gear-Crankshaft; (99-Teeth) | 1 |
| 21***02 | Crankshaft As | 1 |
| 4N***84 | Dowel; (.75 Long) | 1 |
4n-0922 Crankshaft Gp
| 11***66 | Gear-Crankshaft; (99-Teeth) | 1 |
| 24***18 | Kit-Crankshaft Bearing | 0 |
| 25***52 | Plate-Thrust; (Crankshaft) | 2 |
117-9512 Cylinder Block As
| 11***20 | Seal-O-Ring; (Mid-Liner) | 12 |
| 11***12 | Cylinder Block As | 1 |
| 14***17 | Seal-O-Ring; (140.20mm Id) | 12 |
109-9010 Cylinder Block Gp
| 10***23 | Insert-Liner Seat; (5.21-mm Thk)(5.21mm Thk) | 0 |
| 10***24 | . Cover, Insert-Liner Seat; (5.16-mm Thk)(0.5-mm Us) | 0 |
| 10***25 | Insert-Liner Seat; (5.26-mm Thk)(0.5-mm Os), . Cover | 0 |
143-0046 Cylinder Head As
| 14***46 | Cylinder Head As | 1 |
| 1W***83 | Insert-Valve Seat; (Exhaust)(Standard) | 12 |
| 3B***23 | Core Plug--Flywheel Housing Pinion Shaft Hole | 12 |
192-1322 Cylinder Head As
| 10***94 | Dowel | 2 |
| 14***46 | Cylinder Head As | 1 |
| 17***88 | Guide-Valve; (Standard) | 24 |
105-3800 Cylinder Head As
| 10***00 | Cylinder Head As | 1 |
| 1W***83 | Insert-Valve Seat; (Exhaust)(Standard) | 12 |
| 3B***23 | Core Plug--Flywheel Housing Pinion Shaft Hole | 12 |
108-1552 Cylinder Head Gp
| 03***27 | Seal-O-Ring; (19.18mm Id) | 2 |
| 06***61 | Seal-O-Ring (Id=40.87mm) | 12 |
| 10***08 | Kit; (Connecting Plug) (3 Pin) (Includes Plug As And Wedge) | 1 |
108-1887 Cylinder Head Gp
| 10***94 | Dowel | 2 |
| 10***00 | Cylinder Head As | 1 |
| 10***87 | Cylinder Head Group | 1 |
6n-2229 Damper Gp
| 0S***85 | Bolt; 12.7 mm (1/2") Diameter X 38.1 mm (1 1/2") Length Generator To Engine | 12 |
| 16***30 | Damper As | 1 |
| 2D***74 | Bolt; (5/8-18x6.75-In) | 8 |
9n-0725 Drive Gp-Accessory
| 5P***40 | Seal-O-Ring | 1 |
| 6B***83 | Nut,Plain,Hexagon Lever | 1 |
| 7N***22 | Gear-Compressor Drive; (46-Teeth) | 1 |
4n-7734 Flywheel Gp
| 2D***74 | Bolt; (5/8-18x6.75-In) | 12 |
| 4D***04 | Washer,Flat Cover Mtg,Accessory Drive | 12 |
| 4N***14 | Gear; (113-Teeth)(Flywheel Starter) | 1 |
126-7282 Gear Gp-Front -Timing
| 0S***71 | Screw,Cap,Hexagon; Tube Assembly To Turbocharger And Elbow Mounting | 1 |
| 10***13 | Plate-Retaining | 1 |
| 10***16 | Gear; (85-Teeth)(Oil Pump) | 1 |
129-6829 Housing Gp-Flywheel
| 03***94 | Connector-Flared | 1 |
| 03***68 | Elbow (For Use With Shallow Pan) | 1 |
| 0L***43 | Bolt 63.5 mm (3/8" X 2 1/2" -Cover Assembly To Fender | 1 |
126-7280 Housing Gp-Front
| 0L***52 | Capscrew (3/8 - 16 Nc X 3 1/4 Gd8, Hex) | 2 |
| 0T***73 | Bolt (3/8) (63.5mm Long) (On Cab Of Cover Assem.) | 3 |
| 12***80 | Housing Group-Front | 1 |
129-5255 Lifting Gp-Engine
| 0S***73 | Bolt (102mm Long); (1/2-13x4-In) | 1 |
| 0S***85 | Bolt; 12.7 mm (1/2") Diameter X 38.1 mm (1 1/2") Length Generator To Engine | 2 |
| 0S***91 | Screw,Cap,Hexagon Bearing Retainer; Part Of Kit P/N 1w***82 | 1 |
122-0939 Lifting Gp-Engine
| 0S***87 | Bolt-Bracket Assembly To Timing Gear | 4 |
| 11***75 | Bracket-Lifting; (Right) | 1 |
| 11***15 | Bracket-Lifting; (Left) | 1 |
129-6838 Lines Gp-Air Compressor
| 00***43 | Elbow; (12.7mm Id) | 1 |
| 00***26 | Connector; (Flared)(3/4-16 Thd, 47 mm Long) | 1 |
| 03***49 | Elbow; (90 Degree, 37 Degree Flared) | 1 |
132-3627 Pan Gp-Oil -Engine
| 13***27 | Pan Group-Oil; -Engine | 1 |
| 2P***03 | Bolt-Washer Head; (3/8-16x1.25-In) | 38 |
| 6N***96 | Gasket-Oil Pan | 1 |
192-8808 Piston & Rod Gp
| 13***61 | Ring-Piston; (Top)(Top) | 1 |
| 15***56 | Bolt-Special; (Oil Jet) | 1 |
| 16***78 | Rod As-Connecting | 1 |
129-5228 Plug Gp-Cylinder Block
| 12***28 | Plug Group-Cylinder Block | 1 |
| 6V***89 | Seal-O-Ring (Id=19.18mm) | 4 |
| 7W***34 | Plug-Pipe (3/8-18 Nptf Thd) | 4 |
129-6827 Plug Gp-Cylinder Head
| 12***27 | Plug Group-Cylinder Head | 1 |
| 4N***32 | Plug-Cup | 2 |
| 5P***63 | Plug-Cup | 2 |
107-1954 Rocker Arm Gp
| 10***54 | Rocker Arm Group | 1 |
| 10***03 | Screw; (3/8-24x1.67-In)(Intake) | 2 |
| 12***63 | Bracket-Shaft | 1 |
319-0785 Seal Gp-Crankshaft -Rear
| 14***68 | Seal-Crankshaft; (Rear)(Flywheel Housing) | 1 |
| 31***85 | Seal Group-Crankshaft; -Rear | 1 |
319-7401 Seal Gp-Crankshaft -Front
| 14***67 | Seal Group-Crankshaft; (Front) | 1 |
| 31***01 | Seal Group-Crankshaft; -Front | 1 |
7e-6385 Support Gp-Engine
| 0S***66 | Bolt-Pulley To Crankshaft Adapter | 4 |
| 4D***04 | Washer,Flat Cover Mtg,Accessory Drive | 4 |
| 4N***84 | Support-Front Engine | 1 |
129-6828 Trunnion Gp-Engine
| 0S***73 | Bolt (102mm Long); (1/2-13x4-In) | 4 |
| 12***28 | Trunnion Group-Engine | 1 |
| 4W***50 | Adapter-Support | 1 |
108-1874 Valve Mechanism Gp
| 0L***43 | Bolt 63.5 mm (3/8" X 2 1/2" -Cover Assembly To Fender | 12 |
| 10***89 | Bridge-Valve | 24 |
| 10***88 | Valve Lifter Assem | 24 |
Cooling System
141-4109 Core Gp-Oil Cooler
| 14***09 | Core Group-Oil Cooler; -Brake, Frame Mount-Transmission, Engine Mount-Tc, Bk, Hoist, Engine Mount | 1 |
| 8T***64 | Plug-Pipe; (1/8-27-Thd)(Cylinder Head) | 2 |
7w-1713 Core Gp-Oil Cooler
| 6V***49 | Seal-O-Ring (Id=11.89mm); (11.89-mm Id) | 2 |
| 7W***13 | Core Group-Oil Cooler; -Brake-Transmission Oil | 1 |
| 9S***91 | Plug,Machine Thread Fuel Injection Pump | 2 |
4w-0413 Core Gp-Oil Cooler
| 4W***13 | Core Group-Oil Cooler; -Rear Brake, Hoist-Front Brake, Tc | 1 |
| 5M***14 | Pipe Plug Cylinder Block Oil Pressure | 1 |
142-4037 Lines Gp-Coolant Drain
| 00***00 | Tee-Special | 1 |
| 06***02 | Hose Assem. 91.44 cm(36 In.) | 1 |
| 14***37 | Lines Group-Coolant Drain | 1 |
134-0105 Lines Gp-Water
| 0L***43 | Bolt 63.5 mm (3/8" X 2 1/2" -Cover Assembly To Fender | 1 |
| 0L***51 | Bolt Starting Engine Fuel Tank Bracket To Diesel Intake Manifold | 4 |
| 0S***88 | Bolt,Machine; Hose Assembly Mounting,Hose Assembly To Transmission,And To Torque Converter | 8 |
131-3347 Lines Gp-Water -Aftercooler
| 0L***52 | Capscrew (3/8 - 16 Nc X 3 1/4 Gd8, Hex) | 1 |
| 0S***71 | Screw,Cap,Hexagon; Tube Assembly To Turbocharger And Elbow Mounting | 3 |
| 0S***90 | Bolt; (3/8-16x2in)(Clip Thru Spacer To Bracket As) | 3 |
134-1487 Pump Gp-Water
| 0S***91 | Screw,Cap,Hexagon Bearing Retainer; Part Of Kit P/N 1w***82 | 1 |
| 10***85 | Retainer | 1 |
| 10***90 | Housing As-Pump | 1 |
4n-5837 Pump Gp-Water
| 10***49 | Adapter-Inlet | 1 |
| 11***79 | Seal-O-Ring | 1 |
| 11***80 | Seal-O-Ring | 1 |
105-0196 Pump Gp-Water
| 0S***91 | Screw,Cap,Hexagon Bearing Retainer; Part Of Kit P/N 1w***82 | 1 |
| 10***96 | Pump Group-Water | 1 |
| 10***85 | Retainer | 1 |
137-1339 Pump Gp-Water
| 0S***91 | Screw,Cap,Hexagon Bearing Retainer; Part Of Kit P/N 1w***82 | 1 |
| 10***30 | Bearing As-Roller | 1 |
| 11***21 | Plug-Felt; (Water Pump Housing) | 1 |
Electrical And Starting System
223-2340 Control & Mtg Gp-Engine Elek
| 11***69 | Spacer-Special; (8.2x25x89.7-mm Thk) | 4 |
| 15***71 | Control Group-Engine Electronic | 1 |
| 22***40 | Control & Mtg Group-Engine Elek | 1 |
156-7172 Control Gp-Engine Electronic
| 12***74 | Screw-Pan Head; (8-32x9.52-mm) | 1 |
| 13***26 | Washer; (4.52x8.28x0.76-mm Thk) | 1 |
| 15***72 | Control Group-Engine Electronic | 1 |
156-7171 Control Gp-Engine Electronic
| 15***71 | Control Group-Engine Electronic | 1 |
| 15***72 | Control Group-Engine Electronic | 1 |
321-6721 Conversion Gp-Electrical
| 10***03 | Kit; (Receptacle) (3-Pin) (Includes Receptacle As & Wedge) | 0 |
| 11***75 | Control Group-Governor; -Accelerator | 1 |
| 13***58 | Plate As | 1 |
176-1602 Sensor Gp-Position
| 10***03 | Kit; (Receptacle) (3-Pin) (Includes Receptacle As & Wedge) | 1 |
| 17***02 | Sensor Group-Position; -Accelerator Control | 1 |
| 18***35 | Pin-Connector; (16-Ga To 18-Ga) | 3 |
161-9925 Sensor Gp-Pressure
| 10***13 | Seal; (3 Pin Plug) | 1 |
| 15***60 | Kit-Connecting Plug; (3-Pin)(Engine Sensor Wiring Harness) | 1 |
| 16***25 | Sensor Group-Pressure; -Turbocharger Inlet | 1 |
161-9926 Sensor Gp-Pressure
| 15***60 | Kit-Connecting Plug; (3-Pin)(Engine Sensor Wiring Harness) | 1 |
| 16***26 | Sensor Group-Pressure; -Atmospheric Air, Turbo Inlet | 1 |
| 18***40 | Socket-Connector; (14-Ga To 18-Ga)(14-Ga To 18-Ga) | 3 |
167-1709 Sensor Gp-Pressure
| 15***60 | Kit-Connecting Plug; (3-Pin)(Engine Sensor Wiring Harness) | 1 |
| 16***09 | Sensor Group-Pressure; -Injection Actuation Oil | 1 |
| 9X***13 | Sleeve (Order By cm)(Use As Required) | 0 |
103-6092 Sensor Gp-Pressure
| 10***08 | Kit; (Connecting Plug) (3 Pin) (Includes Plug As And Wedge) | 1 |
| 10***13 | Seal; (3 Pin Plug) | 1 |
| 10***92 | Sensor Group-Pressure; -Filtered Oil, Unfiltered Oil | 1 |
6v-2485 Sensor Gp-Pressure
| 10***08 | Kit; (Connecting Plug) (3 Pin) (Includes Plug As And Wedge) | 1 |
| 10***13 | Seal; (3 Pin Plug) | 1 |
| 3E***68 | Wedge-Plug Lock; (3-Pin) | 1 |
161-9931 Sensor Gp-Pressure
| 15***60 | Kit-Connecting Plug; (3-Pin)(Engine Sensor Wiring Harness) | 1 |
| 16***31 | Sensor Group-Pressure; -Atmospheric | 1 |
| 18***36 | Socket-Connector; (16-Ga To 18-Ga) | 3 |
194-6722 Sensor Gp-Pressure
| 15***60 | Kit-Connecting Plug; (3-Pin)(Engine Sensor Wiring Harness) | 1 |
| 18***40 | Socket-Connector; (14-Ga To 18-Ga)(14-Ga To 18-Ga) | 3 |
| 19***22 | Sensor Group-Pressure; -Atmospheric Air | 1 |
194-6724 Sensor Gp-Pressure
| 15***60 | Kit-Connecting Plug; (3-Pin)(Engine Sensor Wiring Harness) | 1 |
| 19***26 | Harness As-Sensor; (16-18 Ga Wire)(Engine Oil Temperature) | 3 |
| 19***24 | Sensor Group-Pressure; -Air Inlet Manifold | 1 |
103-6093 Sensor Gp-Pressure
| 10***93 | Sensor Group-Pressure; -Turbocharger Inlet-Atmospheric, Crankcase | 1 |
| 15***89 | Tube; (3cm) | 0 |
| 15***60 | Kit-Connecting Plug; (3-Pin)(Engine Sensor Wiring Harness) | 1 |
194-6725 Sensor Gp-Pressure
| 15***60 | Kit-Connecting Plug; (3-Pin)(Engine Sensor Wiring Harness) | 1 |
| 18***40 | Socket-Connector; (14-Ga To 18-Ga)(14-Ga To 18-Ga) | 3 |
| 19***25 | Sensor Group-Pressure; -Engine Oil | 1 |
129-6628 Sensor Gp-Speed
| 10***13 | Seal; (3 Pin Plug) | 1 |
| 12***28 | Sensor Group-Speed; -Engine Speed/Timing | 1 |
| 15***60 | Kit-Connecting Plug; (3-Pin)(Engine Sensor Wiring Harness) | 1 |
189-5746 Sensor Gp-Speed
| 10***02 | Kit-Receptacle; (2-Pin)(Engine Sensor Wiring Harness) | 1 |
| 14***36 | Pin-Connector; (14-Ga To 18-Ga) | 2 |
| 17***49 | Strap; (Marker) | 1 |
265-9033 Sensor Gp-Speed
| 15***60 | Kit-Connecting Plug; (3-Pin)(Engine Sensor Wiring Harness) | 2 |
| 19***26 | Harness As-Sensor; (16-18 Ga Wire)(Engine Oil Temperature) | 3 |
| 19***27 | Harness As-Sensor; (14-Ga Wire)(Engine Oil Temperature) | 3 |
102-2240 Sensor Gp-Temperature
| 10***40 | Sensor Group-Temperature; -Output Transfer Gear Oil | 1 |
| 10***03 | Kit; (Receptacle) (3-Pin) (Includes Receptacle As & Wedge) | 1 |
| 18***35 | Pin-Connector; (16-Ga To 18-Ga) | 3 |
106-0735 Sensor Gp-Temperature
| 10***03 | Kit; (Receptacle) (3-Pin) (Includes Receptacle As & Wedge) | 1 |
| 10***35 | Sensor Group-Temperature; -Engine Oil | 1 |
| 18***35 | Pin-Connector; (16-Ga To 18-Ga) | 3 |
142-5683 Starting Aid Ar-Ether
| 14***83 | Starting Aid Ar-Ether | 1 |
| 14***84 | Starting Aid Group-Ether | 1 |
| 14***85 | Starting Aid Group-Ether; -Chassis | 1 |
142-5685 Starting Aid Gp-Ether
| 10***02 | Kit-Receptacle; (2-Pin)(Engine Sensor Wiring Harness) | 1 |
| 13***00 | Clip; (Tab) | 1 |
| 14***85 | Starting Aid Group-Ether; -Chassis | 1 |
142-5684 Starting Aid Gp-Ether
| 12***95 | Tube | 1 |
| 14***84 | Starting Aid Group-Ether | 1 |
| 6N***72 | Ether Atomizer--Spray | 1 |
338-3454 Starting Motor Gp-Electric
| 10***02 | Kit-Receptacle; (2-Pin)(Engine Sensor Wiring Harness) | 0 |
| 17***08 | Switch Group-Flow; -Engine Coolant | 1 |
| 2B***95 | Cap Screw--Tube Assembly To Air Inlet Pipe | 2 |
237-1962 Starting Motor Gp-Electric
| 03***21 | Shim Lever Housing | 1 |
| 04***65 | Screw 19.05 mm(.750 In.) Long | 4 |
| 0S***97 | Capscrew (1/4 - 28 Nf X 1 Gd8, Hex) | 13 |
4n-1061 Starting Motor Gp-Electric
| 23***62 | Starting Motor Group-Electric | 1 |
| 4N***59 | Gasket; (Starting Motor) | 1 |
| 4N***61 | Starting Motor Group-Electric | 1 |
100-4417 Switch Gp-Flow
| 0S***09 | Bolt (3/4") Filler Tube Assembly To Transfer Drive Case | 1 |
| 0S***94 | Bolt (1 In. Long 3/8 In. Dia.); Plate Assembly To Support Assembly | 1 |
| 0S***20 | Bolt--Customer Grounding Bolt | 1 |
118-9692 Wiring Gp-Engine
| 03***48 | Clip; (11.11mm .437in Id) | 5 |
| 10***03 | Kit; (Receptacle) (3-Pin) (Includes Receptacle As & Wedge) | 1 |
| 11***92 | Wiring Group-Engine | 1 |
4z-6631 Wiring Gp-Shutoff
| 03***34 | Seal-O-Ring | 1 |
| 10***61 | Clip | 1 |
| 11***30 | Receptacle As-Connector; (4-Pin) | 1 |
109-0401 Wiring Gp-Unit Injector
| 10***57 | Elbow | 1 |
| 10***01 | Wiring Group-Unit Injector | 1 |
| 1N***98 | Plug; (Clutch/Brake Models Only) | 1 |
Engine Arrangement
212-2234 Engine Ar
| 10***17 | Switch Group-Flow; -Engine Coolant | 1 |
| 10***52 | Cylinder Head Group | 1 |
| 10***53 | Camshaft Group | 1 |
321-6726 Installation Gp-Engine
| 12***13 | Pump Group-Fuel Prm & Prim Filter | 1 |
| 12***23 | Gauge Group-Oil Level (Dipstick); -Engine | 1 |
| 12***46 | Filler Group-Engine Oil | 1 |
Fuel System
112-9775 Control Gp-Governor
| 11***75 | Control Group-Governor; -Accelerator | 1 |
| 13***50 | Plate As | 1 |
| 17***02 | Sensor Group-Position; -Accelerator Control | 1 |
180-6644 Drive Gp-Unit Inj Hyd Pump
| 03***01 | Bolt; --To Reverse Shaft Bearing Retainer | 2 |
| 0S***18 | Bolt; (5/16-18x1-In)(Hydraulic Pump) | 2 |
| 12***40 | Plate | 1 |
125-3431 Drive Gp-Unit Inj Hyd Pump
| 11***35 | Pin | 1 |
| 12***31 | Drive Group-Unit Inj Hydraulic Pump | 1 |
| 16***26 | Sensor Group-Pressure; -Atmospheric Air, Turbo Inlet | 1 |
125-3430 Drive Gp-Unit Inj Hyd Pump
| 0S***17 | Bolt --Use Open Hole In Compressor Body | 2 |
| 0S***18 | Bolt; (5/16-18x1-In)(Hydraulic Pump) | 2 |
| 10***27 | Gasket | 1 |
162-0149 Drive Gp-Unit Inj Hyd Pump
| 0S***17 | Bolt --Use Open Hole In Compressor Body | 2 |
| 0S***18 | Bolt; (5/16-18x1-In)(Hydraulic Pump) | 2 |
| 10***27 | Gasket | 1 |
232-1168 Injector Gp-Fuel
| 11***98 | Adapter-Injection | 1 |
| 11***22 | Seal-Rectangular | 1 |
| 13***69 | Bolt-Socket Head | 2 |
198-7912 Injector Gp-Fuel
| 11***98 | Adapter-Injection | 1 |
| 11***22 | Seal-Rectangular | 1 |
| 13***69 | Bolt-Socket Head | 2 |
166-5985 Kit-Compensator
| 16***85 | Kit-Compensator | 1 |
138-6256 Kit-Seal -Unit Injector Hydraulic Pump
| 03***53 | Seal-O-Ring; (08.92mm Id) | 3 |
| 03***27 | Seal-O-Ring; (19.18mm Id) | 2 |
| 03***39 | Seal-O-Ring (Id=9.25mm) | 1 |
127-7366 Lines Gp-Fuel
| 03***27 | Seal-O-Ring; (19.18mm Id) | 1 |
| 03***28 | Seal-O-Ring | 2 |
| 03***36 | Seal-O-Ring | 2 |
151-1356 Lines Gp-Fuel Filter
| 03***33 | Seal-O-Ring; (12.42mm Id) | 4 |
| 09***87 | Tee | 1 |
| 0S***85 | Bolt; 12.7 mm (1/2") Diameter X 38.1 mm (1 1/2") Length Generator To Engine | 1 |
109-0399 Lines Gp-Injector Hyd Pump
| 0L***43 | Bolt 63.5 mm (3/8" X 2 1/2" -Cover Assembly To Fender | 3 |
| 10***02 | Tube As | 1 |
| 10***99 | Lines Group-Injector Hydraulic Pump | 1 |
126-7292 Pump & Mtg Gp-Unit Inj Hyd
| 03***33 | Seal-O-Ring; (12.42mm Id) | 1 |
| 0L***70 | Bolt (2-1/4") Filler Tube Assembly To Transfer Drive Case | 1 |
| 0S***17 | Bolt --Use Open Hole In Compressor Body | 4 |
206-2630 Pump Gp-Fuel Injection
| 10***26 | Clamp-Injector | 1 |
| 11***21 | Seal-Rectangular | 2 |
| 11***08 | Elbow-Injector | 1 |
122-2513 Pump Gp-Fuel Prm & Prim Filter
| 10***08 | Pump As; (Fuel Priming) | 1 |
| 12***13 | Pump Group-Fuel Prm & Prim Filter | 1 |
| 12***57 | Base As-Filter; (Primary Fuel Filter) | 1 |
225-0567 Pump Gp-Unit Injector Hyd
| 10***77 | Valve Group-Solenoid; -Pressure Control | 1 |
| 13***52 | Seal-O-Ring | 1 |
| 13***09 | Fitting | 2 |
201-4202 Pump Gp-Unit Injector Hyd
| 10***77 | Valve Group-Solenoid; -Pressure Control | 1 |
| 13***52 | Seal-O-Ring | 1 |
| 13***09 | Fitting | 2 |
134-9405 Pump Gp-Unit Injector Hyd
| 0S***17 | Bolt --Use Open Hole In Compressor Body | 4 |
| 10***77 | Valve Group-Solenoid; -Pressure Control | 1 |
| 11***63 | Pump Group-Fuel Transfer | 1 |
225-0568 Pump Gp-Unit Injector Hyd
| 0S***17 | Bolt --Use Open Hole In Compressor Body | 4 |
| 11***20 | Coupling | 1 |
| 14***50 | Pump Group-Fuel Transfer | 1 |
144-0835 Pump Gp-Unit Injector Hyd
| 0S***17 | Bolt --Use Open Hole In Compressor Body | 4 |
| 10***77 | Valve Group-Solenoid; -Pressure Control | 1 |
| 11***20 | Coupling | 1 |
235-2026 Pump Gp-Unit Injector Hyd
| 03***39 | Seal-O-Ring (Id=9.25mm) | 2 |
| 03***42 | Seal-O-Ring; (11.89mm Id) | 3 |
| 13***05 | Gasket-Housing | 1 |
133-1708 Pump Gp-Unit Injector Hyd
| 0S***17 | Bolt --Use Open Hole In Compressor Body | 4 |
| 10***77 | Valve Group-Solenoid; -Pressure Control | 1 |
| 11***63 | Pump Group-Fuel Transfer | 1 |
125-3225 Pump Gp-Unit Injector Hyd
| 0S***17 | Bolt --Use Open Hole In Compressor Body | 4 |
| 10***77 | Valve Group-Solenoid; -Pressure Control | 1 |
| 11***63 | Pump Group-Fuel Transfer | 1 |
201-4201 Pump Gp-Unit Injector Hyd
| 0S***17 | Bolt --Use Open Hole In Compressor Body | 4 |
| 11***20 | Coupling | 1 |
| 14***50 | Pump Group-Fuel Transfer | 1 |
235-2024 Pump Gp-Unit Injector Hyd
| 0S***17 | Bolt --Use Open Hole In Compressor Body | 4 |
| 11***20 | Coupling | 1 |
| 14***50 | Pump Group-Fuel Transfer | 1 |
134-1598 Pump Gp-Unit Injector Hyd
| 0S***17 | Bolt --Use Open Hole In Compressor Body | 4 |
| 10***77 | Valve Group-Solenoid; -Pressure Control | 1 |
| 11***63 | Pump Group-Fuel Transfer | 1 |
169-1034 Pump Gp-Unit Injector Hyd
| 0S***17 | Bolt --Use Open Hole In Compressor Body | 4 |
| 10***77 | Valve Group-Solenoid; -Pressure Control | 1 |
| 11***20 | Coupling | 1 |
282-1915 Valve Gp-Check
| 03***33 | Seal-O-Ring; (12.42mm Id) | 1 |
| 28***15 | Valve Group-Check; -Fuel | 1 |
| 6V***89 | Seal-O-Ring (Id=19.18mm) | 1 |
161-2309 Valve Gp-Fuel
| 03***43 | Seal-O-Ring | 1 |
| 10***06 | Seal-O-Ring (10.52mm Id) | 1 |
| 10***85 | Seal-O-Ring (6.07mm Id) | 2 |
190-0016 Valve Gp-Fuel
| 03***53 | Seal-O-Ring; (08.92mm Id) | 3 |
| 10***77 | Valve Group-Solenoid; -Pressure Control | 1 |
| 19***16 | Valve Group-Fuel | 1 |
165-1536 Valve Gp-Pressure Control
| 03***27 | Seal-O-Ring; (19.18mm Id) | 2 |
| 03***28 | Seal-O-Ring | 1 |
| 10***03 | Seal-O-Ring; (7.65mm Id) | 1 |
107-0677 Valve Gp-Solenoid
| 03***28 | Seal-O-Ring | 1 |
| 03***39 | Seal-O-Ring (Id=9.25mm) | 1 |
| 10***77 | Valve Group-Solenoid; -Pressure Control | 1 |
Hydraulic System
142-5649 Lines Gp-Hydraulic Oil Cooler
| 00***89 | Valve As-Drain | 2 |
| 14***49 | Lines Group-Hydraulic Oil Cooler | 1 |
| 1L***79 | Elbow-Pipe; (3/8 In Pipe) | 2 |
Lubrication System
119-8583 Fastener Gp-Oil Pump Mounting -Engine
| 0L***43 | Bolt 63.5 mm (3/8" X 2 1/2" -Cover Assembly To Fender | 1 |
| 0S***19 | Bolt,Machine Gear Retaining Part Of Kit P/N 1w***46 | 2 |
| 11***83 | Fastener Group-Oil Pump Mounting; -Engine | 1 |
122-5846 Filler Gp-Engine Oil
| 12***46 | Filler Group-Engine Oil | 1 |
| 12***48 | Tube As-Oil Filler | 1 |
| 12***49 | Bracket-Oil Filler | 1 |
4n-2357 Filter Gp-Engine Oil
| 0S***71 | Screw,Cap,Hexagon; Tube Assembly To Turbocharger And Elbow Mounting | 4 |
| 1R***08 | Filter As-Engine Oil; (Advanced Efficiency)(High Efficiency) | 2 |
| 2P***03 | Base As-Oil Filter; (Engine) | 2 |
136-7608 Fumes Disposal Gp
| 12***29 | Tube | 1 |
| 12***47 | Tube As | 1 |
| 13***74 | Clip-Loop | 2 |
122-2523 Gauge Gp-Oil Level (Dipstick) -Engine
| 10***59 | Spacer; (9x20x39.2-mm Thk) | 1 |
| 11***68 | Seal-O-Ring; (15.54mm Id) | 1 |
| 12***14 | Bracket As | 1 |
122-1790 Lines Gp-Engine Oil
| 0L***51 | Bolt Starting Engine Fuel Tank Bracket To Diesel Intake Manifold | 1 |
| 0S***09 | Bolt (3/4") Filler Tube Assembly To Transfer Drive Case | 2 |
| 0S***71 | Screw,Cap,Hexagon; Tube Assembly To Turbocharger And Elbow Mounting | 2 |
122-1898 Lines Gp-Engine Oil Filter
| 0L***70 | Bolt (2-1/4") Filler Tube Assembly To Transfer Drive Case | 1 |
| 0S***71 | Screw,Cap,Hexagon; Tube Assembly To Turbocharger And Elbow Mounting | 4 |
| 0S***91 | Screw,Cap,Hexagon Bearing Retainer; Part Of Kit P/N 1w***82 | 6 |
129-6833 Lines Gp-Turbocharger Oil
| 0S***88 | Bolt,Machine; Hose Assembly Mounting,Hose Assembly To Transmission,And To Torque Converter | 6 |
| 0S***94 | Bolt (1 In. Long 3/8 In. Dia.); Plate Assembly To Support Assembly | 1 |
| 11***26 | Tube As-Drain | 1 |
116-1980 Pump Gp-Engine Oil
| 10***82 | Shaft As-Pump Drive | 1 |
| 10***73 | Shaft As-Idler | 1 |
| 11***79 | Body As-Oil Pump | 1 |
Machine Arrangement
304-6927 Conversion Ar-Machine
| 21***34 | Engine Ar | 1 |
| 30***27 | Conversion Ar-Machine | 1 |
| 32***21 | Conversion Group-Electrical | 1 |
Operator Station
142-5647 Valve Gp-Shutoff -Cab Heater
| 14***47 | Valve Group-Shutoff; -Cab Heater-Engine To Cab Heater | 1 |
| 3N***90 | Plate Serial Number; On R.H. Rear Bank Of Cylinder Block As Viewed From Rear Of Engine | 1 |
Service Equipment And Supplies
142-9921 Plate & Film Gp
| 14***21 | Plate & Film Group | 1 |
775B serial number reference
On a 775B the PIN/serial plate is riveted to the machine frame, normally on the left-hand front frame rail near the cab mounting area; Caterpillar also stamps the number into the frame steel at the same spot as a tamper check. For this production era the number reads as an 8-character serial: a 3-letter prefix (7XJ for the 775B) followed by a 5-digit sequence number, e.g. 7XJ00298 - the prefix identifies the model/plant, the digits are the build sequence.
| Prefix | Identifies | Notes |
|---|---|---|
| 7XJ | 775B quarry/off-highway truck, 3412 DITA power train, 650 hp, 6-speed powershift transmission (EPTC II) | Sole documented serial prefix for the 775B. Running serials span 7XJ00001 up through at least the 7XJ00140-7XJ00298 range, with parts documentation showing an internal running change around 7XJ00080/7XJ00081 for some component groups (same prefix, no new prefix issued). Units in this range date to the early-to-mid 1990s; treat exact start/end year as approximate and confirm the specific unit's build year with a dealer. |
Frequently asked questions
What engine does the Caterpillar 775B use?
A Cat 3412 DITA V12 diesel, mechanically governed (pre-electronic), turbocharged and aftercooled, rated 485 kW (650 hp) gross from about 27.0 L displacement.
What is the operating weight of the Caterpillar 775B?
Empty operating weight is about 42.3 t (93,325 lb). Rated payload runs roughly 59-65 t depending on body style and application, placing it in the 65-70 ton haul truck class.
What replaced the Caterpillar 775B?
The 775D replaced it, carrying the same chassis platform but switching to the electronically governed Cat 3412E engine. Later generations moved to the 775E, then C27-powered 775F and 775G models.
What 775B owners discuss
How does the 775B's 3412 DITA V12 hold up over time, and what do wear signs look like?
The 775B runs a mechanically governed 3412 DITA V12. No engine ECM, no stored fault codes. Loaded correctly and serviced on schedule, this engine routinely runs well past 10,000 hours before a top-end rebuild is needed. A full in-frame overhaul is considered routine shop work, not a crisis; parts and machining tolerances are well documented industry wide. Watch for governor and injection pump wear on higher hour units. A worn flyweight thrust washer or a sticking pump rack shows up as a hunting idle, an engine stuck at one RPM, or poor throttle response. Rising oil consumption with light blue-gray smoke on a high-hour unit usually points to worn rings or liners, not one bad part. Troubleshooting starts mechanical (governor linkage free play, rack travel, fuel pressure), not a laptop, since this engine predates electronic engine management. Have your dealer verify governor and injection timing against factory test-and-adjust specs before returning the truck to full load.
What's the reputation of the 6-speed powershift with EPTC II on the 775B?
EPTC II electronically modulates clutch engagement for smoother shifts and ties into the service/secondary brake logic, a step up from the fully hydraulic powershift transmissions on earlier Cat trucks. Most complaints trace back to a sluggish or sticking shift solenoid rather than the transmission itself, showing up as a harsh or delayed shift in one gear while the rest feel normal. Modulation pressure and solenoid response are the first things to check before assuming clutch pack wear. When the transmission shifts hard across every gear at once, or won't come out of a range, the root cause is usually on the electronic control side (wiring, sensor signal, or the control module) rather than in the powertrain hardware itself.
What wear patterns are typical for a rigid-frame truck like the 775B (tires, suspension cylinders, hoist)?
This class of rigid-frame haul truck wears in predictable places. Tires take heat damage on long, sustained grades, showing up as belt separation or heat cracking rather than simple tread wear; matching tread depth side to side on the drive axle avoids uneven load on the differential. Front strut and rear suspension cylinders are the truck's undercarriage-equivalent wear item, and their rod seals are the common leak point after years of dust and rock debris scoring the rod surface. Hoist cylinder pins and bushings and the body pivot pins wear from cycling under full payload; looseness there shows up as a body that rocks or bangs at the top of a dump cycle. None of this is unique to the B-series; these are standard wear items across the 771/773/775/777 rigid-frame family from this era.
Does the 775B share the C27/ACERT engine used in later 775-series trucks?
No. The 775B is a B-series truck built roughly 1992-1996 and uses the mechanically governed 3412 DITA V12, not the electronically managed C27 fitted to the later D/E/F/G-series 775 trucks. Don't apply C27 fault codes, ADEM diagnostics, or emissions-era service intervals to a 775B; the two engine families don't share diagnostics, injection systems, or electronic controls. Confirm which engine is actually in a given unit from its serial number and dataplate before ordering parts or pulling codes, since the bare model number spans several engine generations over the truck's production history.
What electrical or sensor problems come up most on these older Cat trucks?
Nearly all electrical complaints on B-series trucks of this vintage trace to connectors and grounds, not the EPTC II control module itself. Corroded or moisture-fouled connector pins on speed sensors cause intermittent shift faults that come and go with vibration or weather; stamped harness terminals are more prone to this than later machined-pin connectors. Multiple or mismatched ground points on the frame invite galvanic corrosion and confusing, hard-to-repeat faults. Keeping the engine ground and battery ground tied to a single point, rather than grounding accessories separately around the frame, is the standard fix. When troubleshooting an intermittent EPTC fault, check connector condition and ground integrity before replacing a sensor or the control module.
What maintenance issues come up with the front dry-disc and rear oil-cooled disc brakes?
The rear oil-cooled disc brakes rely on clean cooling oil and correct oil level to carry away heat. Contaminated or low brake cooling oil is the most common cause of premature disc wear or fade on a hard downhill haul, and cooling oil sampling is the standard way to catch metal contamination before a disc pack fails outright. The front dry discs wear like a conventional brake and need a straightforward pad and lining inspection on schedule. Because both circuits tie into the EPTC brake logic, a fault on the electronic side can show up as uneven front-to-rear braking rather than a simple mechanical wear issue. Have your dealer verify brake cooling oil condition and EPTC brake calibration on any truck with an unknown service history before it goes back into a loaded haul cycle.
What should a buyer check on a used 775B before purchase?
Start with service records and hour-meter history; a well-documented truck with regular oil sampling on the engine, transmission, and brake cooling oil is a better bet than a lower-hour truck with gaps in its paperwork. Walk the frame near the suspension cylinder mounts and hoist/body pivot points for cracks or repair welds. Check front strut and rear suspension cylinders for rod scoring and seal leaks. Inspect tires for heat cracking, cuts, and uneven wear side to side. Cycle the transmission through all gears checking for harsh or delayed shifts, a sign of EPTC solenoid or connector issues rather than transmission failure. Pull an oil sample from the engine and rear brake cooling system to check for contamination or metal. Confirm which engine and electronic control revision is actually fitted, since the truck's production span covers several running changes within the B-series. Have your dealer verify governor and injection condition, brake cooling oil analysis, and EPTC fault history as part of a pre-purchase inspection.
Compiled from owner and technician discussions across the industry — experiences vary by serial range and machine history.
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