Komatsu Excavator PC88MR-6 service & repair manual

Description Komatsu Excavator PC88MR-6 service & repair manual

Komatsu Hydraulic Excavator PC88MR-6 pdf workshop service repair manual

Serial number F00003 and up

Technical documentation, specifications, troubleshooting, maintenance, electrical diagrams, hydraulic schematics, adjusting, assembly, disassembly, removal, installation instructions and other information

MANUAL CONTENT:
STRUCTURE, FUNCTION AND MAINTENANCE STANDARD
POWER TRAIN
SWING CIRCLE
SWING MACHINERY
TRACK FRAME AND IDLER CUSHION
IDLER
TRACK ROLLER
CARRIER ROLLER
SPROCKET
TRACK SHOE
SHOES
RUBBER SHOE
SWIVEL JOINT
TRAVEL MOTOR
WORK EQUIPMENT CYLINDER
SOLENOID VALVE GROUP
HYDRAULIC PUMP
CONTROL VALVE
CLSS
SWING MOTOR
ATTACHMENT
TRAVEL PPC VALVE
BLADE, BOOM SWING, 2-PIECE BOOM
PPC VALVES
EQUIPMENT

TESTING AND ADJUSTMENTS
NORMAL OR STANDARD TECHNICAL DATA
FOR THE ENGINE
FOR MACHINE
PUMP FEATURE
CHECK POSITIONS
SPECIAL TOOLS
MEASURING THE ENGINE SPEED
Measuring engine speed
Measuring engine speed to check compression pressure
CHECKING THE EXHAUST SMOKE COLOUR
ADJUSTING VALVE CLEARANCE
CHECKING COMPRESSION PRESSURE
TESTING AND ADJUSTING FUEL INJECTION TIMING
Adjust timing using reference marks
When the injection pump is installed after being overhauled
CHECKING ENGINE OIL PRESSURE
ADJUSTING – CHECKING FUEL CONTROL LEVER LINKAGE
Adjustment
Test
ADJUSTING THE TACHOMETER SENSOR
CHECKING AND CALIBRATING PRESSURE IN THE SECONDARY VALVES
Preparing the machine
Checking boom, arm, bucket, boom swing and travel Unloading pressure
Checking revolving frame rotation and blade descent pressure
Adjusting secondary valve for boom, arm, bucket, boom swing and travel
Adjusting secondary valve for revolving frame rotation and blade descent
Adjusting secondary valve for blade raise
CHECKING AND ADJUSTING THE LS (Load Sensing) VALVE
With differential pressure gauge C5
With analog pressure gauge
Adjusting the valve
ADJUSTING PC VALVE
CHECKING TVC-EPC SOLENOID VALVE OUTPUT
PRESSURE
CHECKING SERVO-CONTROL CIRCUIT PRESSURE
Checking
Adjusting
CHECKING PPC VALVE DELIVERY PRESSURE
CHECKING SOLENOID VALVE OUTPUT PRESSURE
Checking the boom swing stop proportional solenoid valve
Checking ON-OFF valves
ADJUSTING BOOM SAFETY VALVE
ADJUSTING PPC VALVE CLEARANCE
MEASURING TRAVEL DEVIATION
Measuring the deviation
Adjustment
ANALYSIS OF THE CAUSES OF HYDRAULIC DRIFTS
Boom test
Arm test
Testing the functionality of the boom safety valve
Bucket test
Boom swing test
Blade test
Swing motor test
Travel motors
METHODS FOR TESTING FOR LEAKAGES INSIDE THE
SWIVEL JOINT
Functionality test
Identification of defective seal
ELIMINATING PRESSURES FROM CIRCUITS
MEASUREMENT OF CLEARANCE IN SWING CIRCLE BEARINGS
TESTING AND ADJUSTING TRACK SHOE TENSION
Checking
Adjustment
AIR BLEEDING FROM HYDRAULIC CIRCUITS
Order for operations
Bleeding air from pump
Bleeding air from pump and tank
Bleeding air from LS circuit
Bleeding air from hydraulic cylinders
Bleeding air from swing motors
Air bleeding from travel motors
Bleeding air from the revolving frame servocontrol circuit
POTENTIOMETER REPLACEMENT PROCEDURE
TESTING THE AIR-CONDITIONING UNIT
Testing the working temperature
Checking the unit
EMPTYING THE AIR-CONDITIONING UNIT

REMOVAL AND INSTALLATION
PRECAUTIONS TO BE TAKEN WHILE WORKING
SPECIAL TOOLS
COUNTERWEIGHT
INJECTION PUMP
ENGINE HEAD
COMPLETE HYDRAULIC PUMP
SERVO-CONTROL PUMP
ENGINE - PUMPS
COMPLETE RADIATOR AND AIR CONDITIONING CONDENSER
SWING MOTOR AND REDUCTION GEAR
SWING MOTOR
SWING REDUCTION GEAR
SWIVEL JOINT
CONTROL VALVE
LH PPC VALVE
R.H. PPC VALVE
EQUIPMENT PPC VALVES
TRAVEL PPC VALVE
ADDITIONAL EQUIPMENT AND BOOM SWING PPC VALVE
BLADE PPC VALVE
ACCELERATOR ASSEMBLY
CONTROLLER
SAFETY MICROSWITCH
HYDRAULIC OIL TANK
FUEL TANK
CONTROL MODULE
EVAPORATOR UNIT
CABIN
SWING CIRCLE
REVOLVING FRAME
EQUIPMENT (1-piece boom version)
UPPER EQUIPMENT (2-piece boom version)
BOOM CYLINDER (For 1-piece boom)
BOOM CYLINDER (version with 2-piece boom)
ARM CYLINDER
BUCKET CYLINDER
BOOM SWING CYLINDER
BLADE CYLINDER
2-PIECE BOOM CYLINDER
CYLINDERS
SWING SUPPORT
STEEL SHOES
RUBBER SHOES
SPROCKET
COMPLETE TRAVEL ASSEMBLY
TRACK SHOE IDLER
BUMPER SPRING
LOWER IDLER ROLLERS

OTHERS
HYDRAULIC CIRCUIT DIAGRAM (STANDARD)
ELECTRICAL CIRCUIT DIAGRAM

Engine 4D88 series workshop service repair manual