KOMATSU 870B MOTOR GRADER SN 202599 & UP SERVICE MANUAL

This is the COMPLETE official full service repair manual for the KOMATSU 870B MOTOR GRADER SN 202599 & UP. Professional work shop technicians use and trust this service manuals - now you can too!

In book KOMATSU 870B MOTOR GRADER SN 202599 & UP SERVICE REPAIR MANUAL you will find the complete informations was keeped like the original manufacturer book. Also, you will find also datasheet information about circuits, diagrams, equipments.

Service manual is presented to improve the level of service and repair of KOMATSU 870B MOTOR GRADER SN 202599 & UP.
This service manual contains repair and troubleshoot instructions, descriptions of repair and service procedures, etc.

This manual includes detailed diagrams and charts that help you to get a detailed description of all systems motor grader KOMATSU, using which you can determine where to install details, etc.
Service manual helps to quickly and easily repair motor grader KOMATSU, troubleshoot it and to solve problems, resolve any problems that arise.

Service manual comes in PDF, all pages are printable. We recommend to use Adobe PDF Reader, to be sure all images / graphics will display correctly.

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CONTENTS:
01 GENERAL

10 STRUCTURE AND FUNCTION
STEERING (ORBITROL) CONTROL VALVE
TRANSMISSION POWER SHIFT
TRANSMISSION SHIFTER
RECOMMENDED LUBRICANT AND FILTER CHANGE INTERVALS
GENERAL LOCATION OF COMPONENTS
ALL-WHEEL-DRIVE PUMP
ROTARY GROUP
EP2 HYDRAULIC CONTROL
INTERPRETATION OF TYPE CODES
CIRCLE REVERSE MOTOR
CIRCLE REVERSE GEAR CASE MOTOR
CIRCLE REVERSE MOTOR
STEERING AND BRAKE PUMP
STEERING AND BRAKE PUMP MOUNT
STEERING AND BRAKE PUMP
SPECIFICATIONS
AWD HYDRAULIC MOTOR
SPECIFICATIONS
HYDRAULIC OIL SWIVEL BLOCK
FOUR WAY
CONTROL VALVE MANIFOLDS
OPTIONAL CONTROL LEVER (SCARIFIER)
OPTIONAL CONTROL LEVERS (AUXILIARY)
CONTROL VALVES - LH BANK
CONTROL VALVES - RH BANK
VALVE SECTION
MAIN SYSTEM PUMP MOUNT
MAIN SYSTEM PUMP
AWD HIC VALVE
SOLENOID VALVE CARTRIDGE
ACCUMULATOR
SPECIFICATIONS
BRAKE SYSTEM ACCUMULATORS
DRAWBAR LIFT AND DRAWBAR SIDE SHIFT ACCUMULATORS
HYDRAULIC SYSTEM OVERVIEW
STANDARD GRADER
MAIN HYDRAULIC CIRCUIT
STEERING AND BRAKE HYDRAULIC CIRCUIT (INCLUDES LOCK PIN)
STANDARD GRADER WITH ALL WHEEL DRIVE (AWD)
MAIN HYDRAULIC CIRCUIT
ALL WHEEL DRIVE CIRCUIT
STEERING AND BRAKE HYDRAULIC CIRCUIT (INCLUDES LOCK PIN)
MAIN HYDRAULIC CIRCUIT
SPOOL VALVE POSITIONS
NEUTRAL (CENTER)
PULLED (PRESSURIZED B PORT)
PUSHED (PRESSURIZED A PORT)
MAIN SYSTEM CONTROL VALVES
SCARIFIER
RIGHT AND LEFT BLADE LIFT
FLOAT VALVE
BLADE SHIFT
CIRCLE REVERSE MOTOR
MOLDBOARD TILT
ARTICULATION
CIRCLE SIDE SHIFT
LEANING WHEEL
OPTIONAL FLOAT VALVE
STEERING AND BRAKE CIRCUIT
ALL-WHEEL-DRIVE CIRCUIT
NORMAL MODE
AGGRESSIVE MODE
HYDRAULIC OPERATION
ELECTRICAL OPERATION
AWD CONTROLLER PROGRAMMING
LOCK/UNLOCK DIFFERENTIAL PUMP
CIRCLE REVERSE SLIP CLUTCH
CIRCLE REVERSE GEAR CASE
WITHOUT SLIP CLUTCH
WITH SLIP CLUTCH
MOTOR INSTALLATION
TANDEM CASE
LOCATION
DESCRIPTION
NONPLANETARY FINAL DRIVE
PLANETARY FINAL DRIVE
FINAL DRIVE IDENTIFICATION
PART NUMBER TAG
TANDEM CASE MEASUREMENT
SPECIFICATIONS
AWD GEARBOX ASSEMBLY
AWD GEARBOX
FRONT AXLE ASSEMBLY
NON ALL-WHEEL-DRIVE FRONT AXLE
AWD FRONT AXLE
FINAL DRIVE ASSEMBLY
FINAL DRIVE WITHOUT PLANETARY REDUCTION
FINAL DRIVE WITH PLANETARY REDUCTION
NO-SPIN DIFFERENTIAL CASE ASSEMBLY
LOCK/UNLOCK DIFFERENTIAL CASE ASSEMBLY
INPUT QUILL ASSEMBLY
BRAKES
NO-SPIN DIFFERENTIAL BEARING QUILLS
LOCK/UNLOCK DIFFERENTIAL BEARING QUILLS
LOCK/UNLOCK DIFFERENTIAL ASSEMBLY
LOCK/UNLOCK DIFFERENTIAL CASE OIL LINE
NO-SPIN DIFFERENTIAL ASSEMBLY
NO-SPIN DIFFERENTIAL
PLANETARY ASSEMBLY AND RING GEAR
NONPLANETARY FINAL DRIVE CROSS SECTION
PLANETARY REDUCTION FINAL DRIVE CROSS SECTION
MICO PARKING BRAKE
MICO PARKING BRAKE INSTALLATION
PARKING BRAKE CALIPER
MICO BRAKE VALVE
BRAKE PEDAL LINKAGE
HYDRAULIC BRAKE LINES - WITHOUT AWD
HYDRAULIC BRAKE LINES - WITH AWD
BRAKE VALVE
TILT STEERING CONSOLE
EXPLODED VIEW OF TILT STEERING CONSOLE

20 TESTING, ADJUSTING AND TROUBLESHOOTING
STANDARD VALUE TABLES
TRANSMISSION POWER SHIFT
AWD PUMP
CIRCLE REVERSE MOTOR
STEERING AND BRAKE PUMP
AWD HYDRAULIC MOTOR
FOUR-WAY SWIVEL BLOCK
FRONT AXLE AND GEARBOX
HYDRAULIC CYLINDERS
BALL AND SOCKET SHIMMING ADJUSTMENT
ACCUMULATORS
HYDRAULIC CIRCUITS
STEERING AND BRAKE SYSTEM PRESSURE TEST
AWD SYSTEM TEST
ALL-WHEEL-DRIVE PUMP
AWD HYDRAULIC SYSTEM FILTERING PROCEDURE
LOCK/UNLOCK DIFFERENTIAL RELIEF VALVE
FINAL DRIVE ASSEMBLY
TANDEM CASE
CIRCLE ADJUSTMENT
CIRCLE REVERSE SLIP CLUTCH
PARKING BRAKE CALIPER
BRAKE VALVES

30 DISASSEMBLY AND ASSEMBLY
SKETCHES OF SPECIAL TOOLS
TRANSMISSION
CIRCLE REVERSE MOTOR (PARKER)
CIRCLE REVERSE MOTOR (CHAR-LYNN)
HYDRAULIC MOTOR
HYDRAULIC OIL SWIVEL BLOCK - 4 WAY
CIRCLE REVERSE SLIP CLUTCH
TANDEM CASE
AWD - GEARBOX ASSEMBLY
AWD - MOTOR (VICKERS-EATON)
FINAL DRIVE ASSEMBLY
ARTICULATION JOINT

40 MAINTENANCE STANDARD
FINAL DRIVE
NO SPIN DIFFERENTIAL CASE ASSEMBLY
NO SPIN DIFFERENTIAL ASSEMBLY
FINAL DRIVE AND TANDEMS
TANDEM DRIVE
BRAKE VALVE
STEERING CYLINDER
LEANING WHEEL CYLINDER
MOLDBOARD TILT CYLINDER
MOLDBOARD SIDE SHIFT.
DRAWBAR SIDE SHIFT CYLINDER.
DRAWBAR LIFT CYLINDER
SCARIFIER CYLINDER.
ARTICULATION CYLINDER
RIPPER CYLINDER
LUG NUTS.
FRONT AXLE
POWER TILT MOLDBOARD CARRIER
FRAME.
DRAWBAR AND CIRCLE
DRAWBAR LIFT.
ENGINE AND TRANSMISSION
DRIVE LINE
ALTERNATOR
CAB MOUNT.

90 OTHER
ORIGINAL ELECTRICAL DIAGRAM
REVISED ELECTRICAL DIAGRAM
800 TRANSMISSION WITH AWD DIAGRAM
HYDRAULIC CIRCUIT DIAGRAM