Cat 789C Off-Highway Truck Parts Manual (SEBP2790-48) (SN 2BW1-UP, 7TR1-UP, 6LE1-UP, 3LT1-UP)
The 789C usually lives in nasty spots—big pits, haul roads, dust, mud, and everything vibrating all day. This parts manual helps you trace every component on that truck down to the last snap ring, so when something lets go, you’re not guessing at the counter. Say you’ve got a transmission on the bench and three different thicknesses of retaining rings in a coffee can; this book lets you isolate which one belongs in that serial-numbered truck, not the one parked next to it.
Applications & Use Cases
- Track parts by serial number prefix so you don’t order a later-style valve body for an earlier truck and lose a day waiting on returns.
- Break down big assemblies—transmission, final drive, steering—into sub-components so you can verify which seals, bearings, and snap rings you actually need before teardown.
- Trace hose and harness routing to inspect clamps and brackets, then order the right supports instead of zip-tying everything.
- Compare old and new part revisions to check what still fits, what’s been superseded, and what you’ll probably have to adapt.
- Print just the sections you need and keep them at the bench to test-fit part numbers against what’s in your hands.
FAQ
Q: Is this a searchable PDF or just scanned pages?
A: It’s generally a searchable PDF, so you can jump by part number or description instead of flipping forever.
Q: Can I print pages and throw them in a binder for the field shop?
A: Yes, most folks print the key systems they service a lot and keep those by the truck or in the service truck.
Safety Note
Always verify you’re working from the correct serial number range before ordering or installing parts, or you can end up forcing mismatched components and creating a failure point.
Cat 789C Off-Highway Truck Index:
- Back to Main Menu
- Parts Manual
- 789C Off-Highway Truck
- GENERAL INFORMATION
- REPAIR ALTERNATIVES
- SUPPLEMENTAL COOLANT ADDITIVES
- MAINTENANCE PARTS
- INDEX
- INDEX (French)
- INDICE (Spanish)
- ÍNDICE (Portuguese)
- STICHWORTVERZEICHNIS (German)
- MACHINE ARRANGEMENT
- CHASSIS AR- EU
- CHASSIS AR
- GENERAL AR
- MACHINE AR
- ENGINE ARRANGEMENT
- ENGINE AR
- INSTALLATION AR- ENGINE
- BASIC ENGINE
- ADAPTER GP- FLYWHEEL HOUSING
- AIR COMPRESSOR GP
- BASE GP- VALVE COVER
- BELT TIGHTENER GP
- CAMSHAFT GP
- COVER GP- CYLINDER BLOCK
- COVER GP- FLYWHEEL HOUSING
- COVER GP- FRONT HOUSING
- COVER GP- VALVE MECHANISM
- CRANKSHAFT GP
- CYLINDER BLOCK AS
- CYLINDER BLOCK GP
- CYLINDER HEAD AS
- CYLINDER HEAD GP
- DAMPER GP
- DRIVE AR- FAN
- DRIVE GP- ACCESSORY
- DRIVE GP- AUXILIARY
- DRIVE GP- FAN
- FLYWHEEL GP
- GEAR GP- FRONT
- GEAR GP- REAR
- GUARD GP- BELT
- HOUSING GP- FLYWHEEL
- HOUSING GP- FRONT
- LIFTING GP- ENGINE
- LINES GP- AIR COMPRESSOR
- MOUNTING GP- ALTERNATOR
- PAN GP- OIL
- PISTON & ROD GP
- SEAL GP- CRANKSHAFT
- SUPPORT GP- ENGINE
- SUPPORT GP- FAN DRIVE
- TRUNNION GP- ENGINE
- VALVE MECHANISM GP
- LUBRICATION SYSTEM
- BREATHER GP
- FILLER GP- ENGINE OIL
- FUMES DISPOSAL GP
- GAUGE GP- OIL LEVEL (DIPSTICK)
- LINES GP- ENGINE OIL
- LINES GP- PRELUBRICATION
- LINES GP- TURBOCHARGER OIL
- METERING GP- ENGINE OIL
- OIL CHANGE GP- HIGH SPEED
- PUMP & MOTOR GP- PRELUBRICATION
- PUMP GP- ENGINE OIL
- PUMP GP- SCAVENGE
- VALVE & MTG GP- FAN DRIVE
- VALVE & MTG GP- OIL METERING
- VALVE GP- SOLENOID
- COOLING SYSTEM
- CONNECTION GP- WATER
- COOLER GP- ENGINE OIL
- CORE AS- OIL COOLER
- CORE GP- OIL COOLER
- COVER GP- RADIATOR CAP
- FAN GP- SUCTION
- GAUGE GP- COOLANT LEVEL
- HOUSING & REGULATOR GP
- LINES GP- AFTERCOOLER WATER
- LINES GP- TURBOCHARGER WATER
- LINES GP- WATER
- PUMP GP- AUXILIARY WATER
- PUMP GP- WATER
- RADIATOR GP
- SHIELD GP- WATER MANIFOLD
- VALVE GP- COOLANT SAMPLING
- AIR INLET AND EXHAUST SYSTEM
- AFTERCOOLER GP- TREATED WATER
- AFTERCOOLER GP- WATER
- AIR CLEANER GP
- EXHAUST AR- BODY
- LINES GP- AIR
- MANIFOLD GP- EXHAUST
- MUFFLER GP
- PIPE GP- EXHAUST
- SHIELD GP- MANIFOLD
- TURBOCHARGER GP
- FUEL SYSTEM
- CONTROL GP- ACCELERATOR
- FILTER GP- FUEL
- FILTER GP- PRIMARY FUEL
- FILTER GP- WATER SEP & FUEL
- HEATER GP- FUEL
- INJECTOR GP- FUEL
- LINES GP- FUEL
- LINES GP- FUEL INJECTION
- MANIFOLD GP- FUEL
- PUMP GP- FUEL INJECTION
- PUMP GP- FUEL PRIMING
- PUMP GP- FUEL PRM & SEC FILTER
- PUMP GP- FUEL TRANSFER
- TANK AS- FUEL
- TANK GP- FUEL
- VALVE AS- TANK
- ELECTRICAL AND STARTING SYSTEM
- ALARM GP
- ALTERNATOR GP- CHARGING
- APPLICATION GP- MONITOR
- BUFFER GP- SENSOR
- CONTROL & MTG GP- ELECTRONIC
- CONTROL & MTG GP-ENGINE ELEK
- CONTROL & MTG GP- MONITOR
- CONTROL GP- AIR STARTING
- CONTROL GP- ELECTRONIC
- CONTROL GP- ENG RATINGS ELEK
- CONTROL GP-ENGINE ELECTRONIC
- CONTROL GP- FAN
- CONTROL GP- UNPROGRAMMED
- ELECTRONICS GP- ENGINE RATINGS
- ELECTRONICS GP- MACHINE
- ELECTRONICS GP- MONITOR
- ELECTRONICS GP-POWER TRAIN
- HEATER GP- ENGINE OIL
- HEATER GP- JACKET WATER
- INSTALLATION AR- PAYLOAD
- LAMP GP- DOME
- LAMP GP- FLOOD
- LAMP GP- HEAD
- LAMP GP- PAYLOAD SIGNAL
- LAMP GP- REAR
- LAMP GP- SIGNAL
- LUBRICATOR GP- AIR MOTOR
- MODULE GP- VIDS/ VIMS INTERFACE
- PANEL GP- CIRCUIT BREAKER
- SENSOR & MTG GP- PRESSURE
- SENSOR GP- FUEL LEVEL
- SENSOR GP-LIQUID LEVEL
- SENSOR GP- POSITION
- SENSOR GP- PRESSURE
- SENSOR GP- SPEED
- SENSOR GP TEMPERATURE
- SERVICE GP- MACHINE
- SERVICE GP- POWER TRAIN
- SOFTWARE GP-MONITOR
- STARTING AID GP- ETHER
- STARTING AR- AIR
- STARTING AR-COLD WEATHER
- STARTING MOTOR GP- AIR
- SWITCH GP-BYPASS
- SWITCH GP- DISCONNECT
- SWITCH GP- FLOW
- SWITCH GP- LIQUID LEVEL
- SWITCH GP- MAGNETIC
- SWITCH GP- START
- THERMOCOUPLE GP
- VALVE GP- SOLENOID
- WIRING & LIGHTING GP
- WIRING GP- CAB
- WIRING GP- ENGINE
- WIRING GP- JACKET WATER HEATER
- WIRING GP- LIGHTING
- WIRING GP- MONITOR
- WIRING GP- PLATFORM
- POWER TRAIN
- ACTUATOR GP- ROTARY
- CASE & PARTS GP- PLANETARY
- CONTROL GP- TRACTION
- CONTROL GP- TRANSMISSION
- CONTROL GP- TRANSMISSION HYD
- COOLER GP- REAR AXLE OIL
- COVER GP- SHIPPING
- COVER GP- TRANSMISSION TANK CAP
- DIFFERENTIAL & BEVEL GEAR GP
- DIFFERENTIAL GP
- DRIVE GP- PUMP
- FILTER & LINES GP- TORQUE CONV
- FILTER GP- OIL
- FINAL DRIVE GP
- GEAR GP- TRANSFER
- GUARD GP- RIM
- HOUSING GP- REAR AXLE
- LINES GP- POWER TRAIN FILTER
- LINES GP- TRANSMISSION OIL
- PLANETARY GP- TRANSMISSION
- POWER TRAIN AR
- PUMP & LINES GP- REAR AXLE LUBE
- PUMP GP- GEAR
- RIM GP- DEMOUNTABLE
- RIM GP- SINGLE
- SCREEN GP- MAGNETIC
- SHAFT GP- DRIVE
- SLIP JOINT GP
- TORQUE CONVERTER GP
- TRANSMISSION AR
- UNIVERSAL JOINT GP
- VALVE GP-COOLER BYPASS
- VALVE GP-FLOW CONTROL & RELIEF
- VALVE GP- LOCKUP CLUTCH & SYNC
- VALVE GP- LUBE RELIEF
- VALVE GP- MODULATING
- VALVE GP- PRESSURE CONTROL
- VALVE GP- RELIEF
- VALVE GP-SELECTOR & PRESS CONT
- VALVE GP- SOLENOID
- VALVE GP- TRACTION CONTROL
- VALVE GP
- WHEEL GP- FRONT
- WHEEL GP- REAR
- FRAME AND BODY
- BODY & CANOPY AS
- CABLE GP- RETAINING
- COWLING GP
- EXTENSION AS
- FENDER GP
- FRAME AS
- FRAME GP
- GUARD GP- DRIVE SHAFT
- GUARD GP- PLATFORM
- GUARD GP- POWER TRAIN FILTER
- HOOD GP- TRUCK
- LADDER GP
- LINER GP- BODY
- LINER GP- EXTENSION
- LUBRICATION GP- AUTOMATIC
- MIRROR & WALKWAY AR
- MIRROR GP- REAR VIEW
- MOUNTING AR- TRUCK BODY
- MOUNTING GP- TRUCK BODY
- PUMP GP- LUBRICATION
- SIDEBOARD AS- BODY
- SIDEWALL CAP AS- BODY
- SUSPENSION AR
- SUSPENSION GP- FRONT
- SUSPENSION GP- REAR
- TREAD GP- NONSKID
- VALVE GP- LUBE DISTRIBUTION
- WALKWAY GP
- BRAKING SYSTEM
- ACCUMULATOR GP- BRAKE
- AIR DRYER GP
- BRAKE GP- SERVICE & PARKING
- CONTROL GP- PARKING BRAKE
- CONTROL GP- RETARDER
- CONTROL GP- SERVICE BRAKE
- CYLINDER GP- AIR
- CYLINDER GP- AIR/ HYDRAULIC
- FILTER GP- OIL
- LINES GP- SERVICE BRAKE
- PUMP & MOTOR GP-BRAKE RELEASE
- SLACK ADJUSTER GP
- TANK GP- AIR
- TANK GP- BRAKE
- VALVE & MTG GP- BRAKE
- VALVE AS
- VALVE AS-CHECK
- VALVE GP- AIR CONTROL
- VALVE GP- BRAKE
- VALVE GP- CHECK
- VALVE GP- RELIEF
- VALVE GP-SOLENOID
- STEERING SYSTEM
- ACCUMULATOR & MOUNTING GP
- ACCUMULATOR GP
- ACCUMULATOR GP- HYDRAULIC
- ACCUMULATOR GP- STEERING
- CONVERSION GP- STEERING TANK
- CYLINDER & MTG GP- STEERING
- CYLINDER GP- STEERING
- FILTER GP- OIL
- LINES GP- STEERING
- LINK GP- STEERING
- PUMP & MTG GP- STEERING
- PUMP GP- METERING
- STEERING COLUMN GP
- STEERING GEAR GP
- SWASHPLATE GP
- TANK & FILTER GP- STEERING
- TANK GP- STEERING
- VALVE GP- ACCUMULATOR CHARGING
- VALVE GP- CHECK
- VALVE GP- RELIEF
- VALVE GP- SOLENOID
- VALVE GP- SOLENOID & RELIEF
- VALVE GP- STEERING
- HYDRAULIC SYSTEM
- ACTUATOR GP- PILOT CONTROL
- CONTROL GP- HOIST
- CONTROL GP-HOIST ELECTRONIC
- COVER GP- HYDRAULIC TANK CAP
- CYLINDER & MTG GP- HOIST
- CYLINDER GP- HOIST
- HYDRAULIC AR
- LINES GP- HOIST
- LINES GP- FAN DRIVE
- LINES GP- HYDRAULIC OIL COOLER
- MANIFOLD GP
- MANIFOLD GP- HYDRAULIC
- MOUNTING GP- HYDRAULIC TANK
- PUMP GP- PISTON
- ROTATING GP- PUMP
- SCREEN GP- HYDRAULIC
- SHAFT GP- PUMP DRIVE
- TANK GP- HYDRAULIC & TMSN
- UNIVERSAL JOINT GP- PUMP DRIVE
- VALVE GP- CONTROL
- VALVE GP- DIVERTER
- VALVE GP- PUMP CONTROL
- VALVE GP- RELIEF
- OPERATOR STATION
- ADJUSTER GP- SEAT
- AIR CONDITIONER GP
- ARMREST GP
- CAB AR- ROPS
- CAB GP- ROPS
- CLEANOUT GP- CAB
- COMPRESSOR & MTG GP- REFRIG
- COMPRESSOR GP- REFRIGERANT
- CONDENSER & MTG GP- REFRIGERANT
- DASH GP
- DISPLAY GP- PAYLOAD MONITOR
- DOOR GP- CAB
- EXTENSION GP-BACKREST
- HORN GP- AIR
- HOUSING GP- SEAT SUSPENSION
- INSTALLATION GP- RADIO
- LINES GP- AIR CONDITIONER
- LINES GP- HEATER
- LITERATURE GP
- MODULE GP- MESSAGE CENTER
- MONITOR AR-PAYLOAD
- MOUNTING GP- CAB
- ODOMETER GP
- PAN GP- BACKREST
- PAN GP- SEAT
- PANEL GP- INSTRUMENT
- PANEL GP- SOUND SUPPRESSION
- PLATFORM GP
- PLATFORM GP- RH
- RECLINER GP- SEAT
- SEAT BELT GP
- SEAT GP
- SEAT GP- ADJUSTABLE
- SEAT GP- COMPANION
- SEAT GP- SUSPENSION
- SUSPENSION GP- SEAT
- TANK GP- WINDOW WASHER
- VISOR GP- CAB
- WASHER GP- WINDOW
- WINDOW GP
- WIPER GP- WINDOW
- SERVICE EQUIPMENT AND SUPPLIES
- CHOCK GP- WHEEL
- FILM GP
- FILM GP- CAB
- PLATE & FILM GP
- PLATE-WARNING
- PART NUMBER INDEX
Caterpillar
