Komatsu Backhoe Loader WB150AWS-2N service & repair manual

Description Komatsu Backhoe Loader WB150AWS-2N service & repair manual

Komatsu Backhoe Loader WB150AWS-2N pdf workshop service repair manual + operation & maintenance manual

Serial number A90001 and up

SERVICE MANUAL CONTENT:
STRUCTURE AND FUNCTION
POWER TRAIN
TRANSMISSION
DIAGRAM OF THE POWER TRAIN
HYDRAULIC CONVERTER-TRANSMISSION CIRCUIT DIAGRAM
TRANSMISSION
DRIVE SHAFTS
DRIVE SHAFT FOR FORWARD AND REVERSE MOVEMENT
DRIVE SHAFT
DRIVEN GEAR SHAFT
DRIVEN SHAFT 4WD
FRONT AXLE
DIFFERENTIAL
FINAL REDUCTION JOINT
STEERING CYLINDER
REAR AXLE
DIFFERENTIAL
FINAL REDUCTION
BRAKES
STEERING CYLINDER
DIFFERENTIAL LOCKING
HYDRAULIC PUMP
PUMP OPERATION
CONTROL OF DELIVERY
PC VALVE, LS VALVE, SERVO PISTON
LS VALVE
PC VALVE
WORKING MODE SOLENOID VALVE
STEERING UNIT
TECHNICAL DATA
SHOVEL CONTROL VALVE
2-SPOOL
3-SPOOL
BACKHOE CONTROL VALVE
6-SPOOL
7-SPOOL
FOR TELESCOPIC ARM
FOR HAMMER
8-SPOOL
FOR HAMMER AND TELESCOPIC ARM
CLSS (CLOSED CENTER LOAD SENSING SYSTEM)
CHARACTERISTICS
UNLOADING VALVE
INTRODUCTION OF THE LS PRESSURE
DELIVERY COMPENSATION
INTRODUCTION
LIFD CONTROL SYSTEM
LS DECOMPRESSION VALVE
PRESSURE CUT-OFF VALVE
PRIORITY VALVE (ONLY FOR THE 2-3-SPOOL CONTROL VALVE)
SOLENOID VALVE
SOLENOID VALVE BLOCK ST1 - DIFFERENTIAL LOCKING - BACKHOE BOOM LOCKING
SOLENOID VALVE GROUP ST2 - STEERING
SAFETY VALVE
BRAKE PUMP
SHOVEL CYLINDERS
RAISING CYLINDER
DUMPING CYLINDER
DUMP CYLINDER
BACKHOE CYLINDERS
BOOM
ARM
BUCKET
OUTRIGGERS
BOOM SWING
TELESCOPIC ARM
BACKHOE CYLINDERS
BOOM
ARM
BUCKET
BOOM SWING
OUTRIGGER
TELESCOPIC ARM
FRONT WORKING EQUIPMENT
SWING BRACKET
BACKHOE WORK EQUIPMENT
AIR-CONDITIONING UNIT
AIR-CONDITIONING UNIT FUNCTION
FOUR-WHEEL STEERING SYSTEM (4WS)
FRONT-WHEEL STEERING ONLY
FRONT WHEELS TURN OPPOSITE DIRECTION OF REAR WHEELS
ALL FOUR WHEELS TURN IN SAME DIRECTION

TESTING, ADJUSTING AND TROUBLESHOOTING
NORMAL OR STANDARD TECHNICAL DATA
SPECIAL TOOLS
MEASURING ENGINE SPEED
ADJUSTING VALVE CLEARANCE
MEASURING COMPRESSION PRESSURE
FUEL INJECTION TIMING
FAN BELT
TENSION CHECK
FAN BELT TENSION
COMPRESSOR BELT
CHECKING TENSION
FAN BELT TENSION
ACCELERATOR PEDAL AND LEVER
OPERATING TRAVEL
ACCELERATOR PEDAL TRAVEL ADJUSTING
ACCELERATOR LEVER TRAVEL ADJUSTING
BRAKE PEDAL AND ALIGNMENT
TRAVEL AND MICRO SWITCHES
MASTER CYLINDER ROD ADJUSTMENT
MICROSWITCHES ADJUSTMENT
AIR BLEEDING
RELEASING RESIDUAL PRESSURE
AIR BLEEDING FROM PUMP
AIR BLEEDING FROM CYLINDERS
AIR BLEEDING FROM OIL TANK
HYDRAULIC OIL TANK PRESSURIZATION
RELEASING RESIDUAL PRESSURE FROM CIRCUITS
AIR BLEEDING FROM BRAKING CIRCUIT
CHECKING AIR BLEEDING FROM BRAKING CIRCUIT
ATTACHMENTS HYDRAULIC CIRCUIT
CHECKING AND SETTING PRESSURE
INTRODUCTION
TESTING AND SETTING GENERAL VALVES
TESTING AND SETTING SECONDARY VALVES
MAIN AND SECONDARY VALVES SETTING
SENSING SIGNAL (LS VALVE)
UNLOADING VALVE
ADJUSTING THE UNLOADING VALVE
UNLOADING VALVE FUNCTIONALITY
PRIORITY VALVE
TESTING PRIORITY VALVE OPERATION
PRIORITY VALVE CLEANING
STEERING CONTROL SYSTEM PRESSURE
TESTING
SETTING
BRAKE SYSTEM
TESTING CIRCUIT AND BRAKE TIGHTNESS
TESTING BRAKING GROUP LEAK TIGHTNESS
ENGINE SPEED CONTROL
UNDER LOAD
PREPARING THE MACHINE
TESTING WITH THE TORQUE CONVERTER UNDER STRESS
TESTING THE TORQUE CONVERTER AND HYDRAULIC SYSTEM UNDER STRESS
POWER TRAIN PRESSURES
PREPARING THE MACHINE
CONVERTER OIL PRESSURE
CLUTCH ENGAGEMENT PRESSURE
POWER TRAIN CLUTCHES FUNCTION
PREPARATION OF THE MACHINE
RETURN TO DIG DEVICE SENSOR
ANALYSIS OF HYDRAULIC DRIFT
FRONT EQUIPMENT
TESTING FRONT BUCKET LIFTING
TESTING FRONT BUCKET DUMPING
BACKHOE
BOOM TESTING
ARM TESTING
BUCKET TESTING
OUTRIGGERS TESTING
AIR-CONDITIONING UNIT
TESTING THE WORKING TEMPERATURE
CHECKING THE UNIT
EMPTYING THE AIR CONDITIONING UNIT
TROUBLESHOOTING
FRONT AXLE
REAR AXLES
TRANSMISSION
ELECTRONIC CONTROL UNIT INSPECTION
FAILURE
NUMERICAL ERROR
ANOMALY

DISASSEMBLY AND ASSEMBLY
PRECAUTIONS DURING OPERATION
SPECIAL TOOLS
STARTING MOTOR
ALTERNATOR
AIR CONDITIONING COMPRESSOR
INJECTION PUMP
INJECTION NOZZLES
THERMOSTAT
COOLING LIQUID PUMP
TURBOCHARGER
CYLINDER HEAD
ACCUMULATOR DISCONNECT
SWITCH
FRONT COUNTERWEIGHT
RADIATOR OIL COOLER UNIT
CONDENSER
MUFFLER
EXHAUST PIPE
ENGINE HOOD
CAB
HEAT AND AIR CONDITIONING
GROUP
FUEL TANK
HYDRAULIC OIL TANK
ENGINE-GEARBOX-PUMP GROUP
PISTON PUMP
TRANSMISSION
DISASSEMBLY CONVERTER
ASSEMBLY CONVERTER
DISASSEMBLY PLUGS AND FILTERS
ASSEMBLY PLUGS AND FILTERS

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