Komatsu Wheel Loader WA900L-3 service & repair manual

Description Komatsu Wheel Loader WA900L-3 service & repair manual

Komatsu Wheel Loader WA900L-3 pdf workshop service manual + operation & maintenance manual

Serial numbers 52001 and up

Specifications, testing, adjusting, troubleshooting, technical documentation, electrical wiring diagrams, hydraulic schematics, assembly, disassembly, removal, installation instructions and other information

MANUAL CONTENT:
GENERAL
GENERAL ASSEMBLY DRAWING
SPECIFICATIONS
WEIGHT TABLE
LIST OF LUBRICANT AND WATER

STRUCTURE AND FUNCTION
POWER TRAIN
POWER TRAIN SYSTEM
ENGINE CONTROL
RADIATOR AND COOLER
DAMPER
TORQUE CONVERTER AND TRNSMISSION PIPING
TRANSMISSION HYDRAULIC
SYSTEM DIAGRAM
TRANSMISSION HYDRAULIC
CIRCUIT DIAGRAM
TORQUE CONVERTER
TRANSMISSION
TRANSFER
TRANSMISSION CONTROL VALVE
TORQUE CONVERTER OIL COOLER
DRIVE SHAFT
CENTER SUPPORT
AXLE
DIFFERENTIAL
FINAL DRIVE
CENTER HINGE PIN
AXLE MOUNT
TIRE AND WHEEL
STEERING PIPING
JOYSTICK STEERING LINKAGE
STEERING PUMP
SWITCH PUMP
STEERING DEMAND VALVE
EPC VALVE
ROTARY VALVE
TWO-WAY RESTRICTOR VALVE
DIVERTER VALVE
BRAKE PIPING
BRAKE CIRCUIT DIAGRAM
BRAKE VALVE
CHARGE VALVE
ACCUMULATOR (For brake)
SLACK ADJUSTER
BRAKE
PARKING BRAKE
SPRING CYLINDER
PARKING BRAKE SOLENOID VALVE
HYDRAULIC PIPING
WORK EQUIPMENT LEVER LINKAGE
HYDRAULIC TANK
MAIN PISTON PUMP
SERVO VALVE
PPC VALVE (Proportional pressure valve)
PPC RELIEF VALVE
ACCUMULATOR (For PPC valve)
MAIN CONTROL VALVE
LUBRICATION OF WORK
EQUIPMENT
WORK EQUIPMENT LINKAGE
BUCKET POSITIONER AND BOOM KICK-OUT
OPERATION OF PROXIMITY SWITCH
CAB AND ROPS CANOPY
AIR CONDITIONER
MACHINE MONITOR SYSTEM
MAIN MONITOR
MAINTENANCE MONITOR
ENGINE STARTING CIRCUIT
ENGINE STOP CIRCUIT
PREHEATING CIRCUIT
ELECTRICAL TRANSMISSION CONTROL
KICK-DOWN, HOLD SWITCH
AUTOMATIC TRANSMISSION (ATM) SYSTEM
AJSS (Advanced joystick steering system)
ELECTRIC PARKING BRAKE CONTROL

TESTING AND ADJUSTING
STANDARD VALVE TABLE FOR ENGINE
STANDARD VALVE TABLE FOR CHASSIS
STANDARD VALVE TABLE FOR ELECTRICAL PARTS
TESTING AND ADJUSTING
TABLE OF TOOLS FOR TESTING, ADJUSTING AND TROUBLESHOOTING
MEASURING ENGINE SPEED
MEASURING EXHAUST GAS COLOR
ADJUSTING VALVE CLEARANCE
MEASURING COMPRESSION PRESSURE
MEASURING BLOW-BY PRESSURE
TESTING AND ADJUSTING FUEL INJECTION TIMING
MEASURING ENGINE OIL PRESSURE
MEASURING EXHAUST TEMPERATURE
MEASURING AIR SUPPLY PRESSURE (BOOST PRESSURE)
TESTING AND ADJUSTING ALTERNATOR BELT TENSION
TESTING AND ADJUSTING BELT TENSION FOR AIR CONDITIONER COMPRESSOR
MEASURING ACCELERATOR PEDAL
TESTING OF UPPER DRIVE SHAFT SLIDING PART
TESTING AND ADJUSTING TORQUE CONVERTER AND TRANSMISSION OIL PRESSURE
PROCEDURE FOR OPERATING EMERGENCY STEERING SPOOL WHEN TRANSMISSION VALVE FAILS
TESTING AND ADJUSTING STEERING OIL PRESSURE
TESTING AND ADJUSTING EMERGENCY STEERING OIL PRESSURE
BLEEDING AIR FROM STEERING CIRCUIT
TESTING AND ADJUSTING STEERING STOPPER BOLT
TESTING AND ADJUSTING STEERING LEVER ANGLE SENSOR AND FRAME ANGLE SENSOR
TESTING WHEEL BRAKE PERFORMANCE
TESTING WHEEL BRAKE OIL PRESSURE DROP
MEASURING WEAR OF WHEEL BRAKE DISC
TESTING AND ADJUSTING ACCUMULATOR CHARGE CUT-IN AND CUT-OUT PRESSURE
TESTING OF ACCUMULATOR NITROGEN GAS PRESSURE AND PROCEDURE FOR CHARGING ACCUMULATOR WITH NITROGEN GAS
BLEEDING AIR FROM WHEEL BRAKE CIRCUIT
TESTING PARKING BRAKE PERFORMANCE
MEASURING PARKING BRAKE SOLENOID OUTPUT PRESSURE
CHECKING AND ADJUSTING PARKING BRAKE PAD
TESTING AND ADJUSTING PPC PRESSURE
ADJUSTING PPC VALVE LINKAGE
TESTING AND ADJUSTING WORK EQUIPMENT HYDRAULIC PRESSURE
BLEEDING AIR FROM PISTON PUMP
BLEEDING AIR FROM WORK EQUIPMENT CIRCUIT
ADJUSTING WORK EQUIPMENT LEVER LINKAGE
RELEASING REMAINING PRESSURE IN HYDRAULIC CIRCUIT
TESTING AND ADJUSTING BUCKET PROXIMITY SWITCH
TESTING AND ADJUSTING BOOM PROXIMITY SWITCH
TESTING PROXIMITY ACTUATION PILOT LAMP
ADJUSTING SPEEDOMETER MODULE OF MAIN MONITOR

TROUBLESHOOTING
POINTS TO REMEMBER WHEN TROUBLESHOOTING
SEQUENCE OF EVENTS IN TROUBLESHOOTING
POINTS TO REMEMBER WHEN CARRYING OUT MAINTENANCE
CHECKS BEFORE TROUBLESHOOTING
TYPES AND LOCATIONS OF CONNECTORS
CONNECTOR LOCATION STEREOGRAM
WIRING TABLE FOR CONNECTOR PIN NUMBERS
T-ADAPTER BOX AND T-ADAPTER TABLE
EXPLANATION OF FUNCTIONS OF ELECTRIC CONTROL MECHANISM
METHOD OF DISPLAYING ACTION CODE AND FAILURE CODE
CHART OF ACTION CODES AND FAILURE CODES, AND RE-ENACTION
TRANSMISSION CONTROLLER LED DISPLAY
METHOD OF USING JUDGEMENT TABLE
METHOD OF USING TROUBLESHOOTING CHARTS
METHOD OF USING MATRIX TROUBLESHOOTING TABLES
TROUBLESHOOTING OF ENGINE (S MODE)
TROUBLESHOOTING OF TRANSMISSION CONTROL SYSTEM (T MODE)
TROUBLESHOOTING OF MAIN MONITOR SYSTEM (M MODE)
TROUBLESHOOTING OF MAINTENANCE MONITOR SYSTEM (K MODE)
TROUBLESHOOTING OF ELECTRICAL SYSTEM (E MODE)
TROUBLESHOOTING OF HYDRAULIC AND MECHANICAL SYSTEM (H MODE)
TROUBLESHOOTING OF AJSS (ADVANCED JOYSTICK STEERING SYSTEM) CONTROL SYSTEM (A MODE)

DISASSEMBLY AND ASSEMBLY
METHOD OF USING MANUAL
STANDARD TIGHTENING TORQUE TABLE
PRECAUTIONS WHEN CARRYING OUT OPERATION
METHOD OF DISASSEMBLING AND CONNECTING PUSH-PULL TYPE COUPLER
COATING MATERIALS LIST
SPECIAL TOOL LIST
SKETCHES OF SPECIAL TOOLS
ENGINE RELATED PARTS
REMOVAL AND INSTALLATION OF RADIATOR
REMOVAL AND INSTALLATION OF ENGINE
REMOVAL AND INSTALLATION OF DAMPER
DISASSEMBLY AND ASSEMBLY OF DAMPER
REMOVAL AND INSTALLATION OF TORQUE CONVERTER AND TRANSMISSION ASSEMBLY
DISASSEMBLY AND ASSEMBLY OF TORQUE CONVERTER
DISASSEMBLY AND ASSEMBLY OF TORQUE CONVERTER VALVE
DISASSEMBLY AND ASSEMBLY OF TRANSMISSION
REMOVAL AND INSTALLATION OF TRANSMISSION VALVE
DISASSEMBLY AND ASSEMBLY OF TRANSMISSION VALVE
DISASSEMBLY AND ASSEMBLY OF TRANSFER
DISASSEMBLY AND ASSEMBLY OF PTO
REMOVAL AND INSTALLATION OF CENTER SUPPORT
DISASSEMBLY AND ASSEMBLY OF CENTER SUPPORT
DISASSEMBLY AND ASSEMBLY OF DRIVE SHAFT
REMOVAL AND INSTALLATION OF FRONT AXLE
REMOVAL AND INSTALLATION OF REAR AXLE
REMOVAL AND INSTALLATION OF DIFFERENTIAL
DISASSEMBLY AND ASSEMBLY OF DIFFERENTIAL
DISASSEMBLY AND ASSEMBLY OF FINAL DRIVE
REMOVAL AND INSTALLATION OF ROTARY VALVE
REMOVAL AND INSTALLATION OF EMERGENCY STEERING PUMP
REMOVAL AND INSTALLATION OF DIVERTER VALVE
DISASSEMBLY AND ASSEMBLY OF DIVERTER VALVE
REMOVAL AND INSTALLATION OF ACCUMULATOR CHARGE VALVE
DISASSEMBLY AND ASSEMBLY OF ACCUMULATOR CHARGE VALVE
REMOVAL AND INSTALLATION OF STEERING CYLINDER
REMOVAL AND INSTALLATION OF STEERING VALVE
REMOVAL AND INSTALLATION OF BRAKE VALVE
REMOVAL AND INSTALLATION OF SLACK ADJUSTER
DISASSEMBLY AND ASSEMBLY OF SLACK ADJUSTER
REMOVAL AND INSTALLATION OF BRAKE
DISASSEMBLY AND ASSEMBLY OF BRAKE
REMOVAL AND INSTALLATION OF PARKING BRAKE CALIPERS
DISASSEMBLY AND ASSEMBLY OF PARKING BRAKE CALIPERS
REMOVAL AND INSTALLATION OF PARKING BRAKE PAD
REMOVAL AND INSTALLATION OF PARKING BRAKE SPRING CYLINDER
REMOVAL AND INSTALLATION OF BRAKE OIL TANK
REMOVAL AND INSTALLATION OF HYDRAULIC PUMP
REMOVAL AND INSTALLATOIN OF HYDRAULIC TANK AND FILTER CASE ASSEMBLY
REMOVAL AND INSTALLATION OF PPC VALVE
DISASSEMBLY AND ASSEMBLY OF PPC VALVE
REMOVAL AND INSTALLATION OF WORK EQUIPMENT CONTROL VALVE ASSEMBLY
DISASSEMBLY AND ASSEMBLY OF WORK EQUIPMENT CONTROL VALVE
REMOVAL AND INSTALLATION OF CAB
REMOVAL AND INSTALLATION OF FLOOR FRAME
REMOVAL AND INSTALLATION OF CENTER HINGE PIN
REMOVAL AND INSTALLATION OF WORK EQUIPMENT
REPLACEMENT OF BOOM FRONT END BUSH
REMOVAL AND INSTALLATION OF BUCKET CYLINDER
REMOVAL AND INSTALLATION OF LIFT CYLINDER
DISASSEMBLY AND ASSEMBLY OF HYDRAULIC CYLINDER
REMOVAL AND INSTALLATION OF AIR CONDITIONER UNIT
REMOVAL AND INSTALLATION OF AIR CONDITIONER COMPRESSOR
REMOVAL AND INSTALLATION OF RECEIVER TANK
REMOVAL AND INSTALLATION OF AIR CONDITIONER CONDENSER
REMOVAL AND INSTALLATION OF TRANSMISSION AND JOYSTICK STEERING CONTROLLER
REMOVAL AND INSTALLATION OF MAIN MONITOR
REMOVAL AND INSTALLATION OF FUEL TANK
REMOVAL AND INSTALLATION OF COUNTERWEIGHT
REMOVAL AND INSTALLATION OF AJSS LEVER SWITCH ASSEMBLY

MAINTENANCE STANDARD
ENGINE MOUNT
TRANSMISSION MOUNT
DAMPER
TORQUE CONVERTER CHARGING, PPC AND BRAKE PUMP
TORQUE CONVERTER
TORQUE CONVERTER REGULATOR VALVE
TRANSMISSION
TRANSFER
TRANSMISSION CONTROL VALVE
DRIVE SHAFT
CENTER SUPPORT
DIFFERENTIAL
FINAL DRIVE
AXLE MOUNT
CENTER HINGE PIN
STEERING DEMAND VALVE
DIVERTER VALVE
STEERING CYLINDER MOUNT
EMERGENCY STEERING PUMP
BRAKE VALVE
SLACK ADJUSTER
BRAKE
PARKING BRAKE
PPC VALVE
PPC RELIEF VALVE
CONTROL PUMP
STEERING PUMP
SWITCH PUMP
MAIN PISTON PUMP
MAIN CONTROL VALVE
HYDRAULIC CYLINDER
WORK EQUIPMENT LINKAGE
BUCKET POSITIONER AND BOOM KICK-OUT
ROPS CANOPY

OTHERS
HYDRAULIC CIRCUIT DIAGRAM (ENGINE SHUT-DOWN)
ELECTRICAL CIRCUIT DIAGRAM
ELECTRICAL CIRCUIT DIAGRAM (AUTO-GREASING)

Engine SA12V140Z-1, SAA12V140ZE-2 series workshop service manual