Komatsu Backhoe Loader WB140-2N WB150-2N service & repair manual

Description Komatsu Backhoe Loader WB140-2N WB150-2N service & repair manual

Komatsu Backhoe Loader WB140-2N, WB150-2N pdf workshop service repair manual + operation & maintenance manual

Serial numbers:
WB140-2N A20001 and up, A20637 and up
WB150-2N A60001 and up, A60029 and up

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

MANUAL CONTENT:
STRUCTURE AND FUNCTION
POWER TRAIN
DESCRIPTION
TRANSMISSION
DIAGRAM OF THE POWER TRAIN
HYDRAULIC CONVERTOR
TRANSMISSION
CIRCUIT DIAGRAM
DRIVE SHAFTS
FORWARD AND REVERSE
DRIVEN GEAR
4WD DRIVEN
CONTROL VALVE BLOCK
FRONT AXLE
DIFFERENTIAL
FINAL REDUCTION - JOINT
STEERING CYLINDER
REAR AXLE
DIFFERENTIAL
FINAL REDUCTION
BRAKES
HYDRAULIC PUMP
FUNCTION
STRUCTURE
OPERATION
PUMP OPERATION
CONTROL OF DELIVERY
PC VALVE, LS VALVE, SERVO
PISTON
LS VALVE
PC VALVE
WORKING MODE SOLENOID
VALVE
FUNCTION
OPERATION
STEERING UNIT
TECHNICAL DATA
OPERATION
HYDRAULIC CIRCUIT
SHOVEL CONTROL VALVE
BACKHOE CONTROL VALVE
FOR TELESCOPIC ARM
FOR HAMMER
FOR HAMMER AND
TELESCOPE ARM
CLSS
SENSING SYSTEM
CHARACTERISTICS
STRUCTURE
OPERATION
UNLOADING VALVE
FUNCTION
OPERATION
INTRODUCTION OF THE LS
PRESSURE
OPERATION
DELIVERY COMPENSATION
INTRODUCTION
FUNCTION
OPERATION
LIFD CONTROL SYSTEM
FUNCTION
OPERATION
LS DECOMPRESSION VALVE
DESCRIPTION
OPERATION
PRESSURE CUT-OFF VALVE
DESCRIPTION
OPERATION
PRIORITY VALVE (ONLY FOR
THE 2-3 SPOOL CONTROL
FUNCTION
SOLENOID VALVE
SOLENOID VALVE BLOCK
DIFFERENTIAL LOCKING
BACKHOE BOOM LOCKING
SAFETY VALVE
BRAKE PUMP
SHOVEL CYLINDERS
RAISE CYLINDER
DUMP CYLINDER
BACKHOE CYLINDERS
BOOM
ARM
BUCKET
OUTRIGGERS
BOOM SWING
TELESCOPIC ARM
CHARACTERISTICS
FRONT WORKING EQUIPMENT
SWING BRACKET
BACKHOE WORKING EQUIPMENT
AIR CONDITIONING UNIT
FUNCTION

TESTING, ADJUSTING AND TROUBLESHOOTING
STANDARD VALUE TABLES FOR ENGINE
STANDARD VALUE TABLE FOR CHASSIS
SPECIAL TOOLS
ENGINE SPEED
VALVE CLEARANCE
COMPRESSION PRESSURE
FUEL INJECTION TIMING
FAN AND ALTERNATOR DRIVE BELT
TENSION CHECK
TENSION ADJUSTMENT
COMPRESSOR DRIVE BELT
CHECKING TENSION
TENSION ADJUSTMENT
ACCELERATOR PEDAL AND LEVER TRAVEL
ACCELERATOR PEDAL TRAVEL ADJUSTMENT
ACCELERATOR LEVER TRAVEL ADJUSTMENT
BRAKE PEDAL TRAVEL AND MICROSWITCHES
MASTER CYLINDER ROD ADJUSTMENT
MICROSWITCHES ADJUSTMENT
CHECKING ADJUSTMENT
BLEEDING AIR
BLEEDING AIR FROM PUMP
BLEEDING AIR FROM CYLINDERS
BLEEDING AIR FROM OIL TANK
HYDRAULIC OIL TANK PRESSURIZATION
RELEASING RESIDUAL PRESSURE FROM THE CIRCUITS
BLEEDING AIR FROM THE BRAKING CIRCUIT
CHECKING AIR BLEEDING FROM BRAKING CIRCUIT
ATTACHMENTS HYDRAULIC CIRCUIT
INTRODUCTION
TESTING AND SETTING GENERAL VALVES
FRONT SHOVEL CONTROL VALVE (2-3 SPOOLS)
BACKHOE CONTROL VALVE (6-7-8 SPOOLS)
TESTING SECONDARY VALVES
SETTING MAIN AND SECONDARY VALVES
MAIN RELIEF VALVES
SECONDARY VALVES
LOAD SENSING SIGNAL (LS VALVE)
LOAD SENSING VALVE ADJUSTMENT

DISASSEMBLY AND ASSEMBLY
REMOVAL OR INSTALLATION OF PARTS OR ASSEMBLIES
PRECAUTIONS DURING SERVICE OR REPAIR OPERATIONS
REMOVAL PRECAUTIONS
INSTALLATION PRECAUTIONS
SPECIAL TOOLS
ENGINE COMPONENTS
CYLINDER HEAD ASSEMBLY
CRANKSHAFT DAMPER AND PULLEY ASSEMBLY
ENGINE OIL COOLER ASSEMBLY
ENGINE OIL PUMP ASSEMBLY
FUEL INJECTION PUMP ASSEMBLY
FUEL INJECTOR ASSEMBLY
FRONT AND REAR ENGINE OIL SEAL ASSEMBLY
GOVERNOR ASSEMBLY
THERMOSTAT ASSEMBLY
TURBOCHARGER ASSEMBLY
WATER PUMP ASSEMBLY
FRONT END LOADER CYLINDER LOCK
LOCKING PROCEDURES
STARTER, ALTERNATOR AND COMPRESSOR
STARTER MOTOR
ALTERNATOR
REFRIGERANT COMPRESSOR
BATTERY DISCONNECT SWITCH
FRONT COUNTERWEIGHT
RADIATOR, CONDENSER AND OIL COOLERS
RADIATOR

OTHERS
HYDRAULIC CIRCUIT
ELECTRICAL SCHEMATIC
AIR CONDITIONER CIRCUIT

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