This Complete Service Repair Workshop Manual PDF Download for the Komatsu WA250-5H, WA250PT-5H Wheel Loader has easy to read text sections with top quality diagrams, pictures and illustrations. The step by step instructions show you how to fault find or complete any repair or overhaul, correctly and efficiently, saving time and avoiding costly mistakes. All specifications and tolerances are listed. Functions of components and systems are also explained.
APPLICABLE MODELS :
Komatsu WA250-5H Wheel Loader
Serial Numbers : WA250H50051 and up
Komatsu WA250PT-5H Wheel Loader
Serial Numbers : WA250H60051 and up
TABLE OF CONTENTS :
- GENERAL
- STRUCTURE AND FUNCTION
- TESTING AND ADJUSTING
- DISASSEMBLY AND ASSEMBLY
- OTHERS
MANUAL SPECIFICATION :
File Format : PDF
Language : English
Bookmarked : Yes
Searchable : Yes
Printable : Yes
Product Code : VEBM230102
Total Pages : 849
This manual has been prepared as an aid to improve the quality of repairs by giving the serviceman an accurate understanding of the product and by showing him the correct way to perform repairs and make judgements. Make sure you understand the contents of this manual and use it to full effect at every opportunity. This is a must for the Do-It-Yourselfer! Saving Yourself $$$$$$ In Service Repair And Maintenance Costs !!!!
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FOREWORD
01 GENERAL
- GENERAL ASSEMBLY DRAWINGS
- SPECIFICATIONS
- WEIGHT TABLE
- LIST OF LUBRICANT AND COOLANT
10 STRUCTURE & FUNCTION
- ENGINE MOUNT AND TRANSFER MOUNT
- DAMPER
- COOLING SYSTEM
- POWER TRAIN
- POWER TRAIN SYSTEM DIAGRAM
- DRIVE SHAFT (PROPELLER SHAFT)
- HST HYDRAULIC PIPING DIAGRAM
- HST PUMP
- HIGH-PRESSURE RELIEF VALVE
- LOW-PRESSURE RELIEF VALVE
- HST CHARGE PUMP
- SPEED-RELATED VALVE (DA VALVE)
- HIGH-PRESSURE CUT-OFF VALVE
- HST MOTOR
- EP SERVO VALVE
- HA SERVO VALVE
- FORWARD-REVERSE SHUTTLE VALVE
- TRANSFER
- TRANSFER OIL COOLER
- CLUTCH SOLENOID VALVE
- AXLE
- DIFFERENTIAL
- LIMITED-SLIP DIFFERENTIAL
- FINAL DRIVE
- AXLE MOUNTING AND CENTER HINGE PIN
- STEERING PIPING
- STEERING COLUMN
- PRIORITY VALVE
- ORBIT-ROLL VALVE
- 2-WAY RESTRICTOR VALVE
- STEERING CYLINDER
- EMERGENCY STEERING PIPING
- EMERGENCY STEERING VALVE
- BRAKE PIPING
- BRAKE VALVE
- INCHING VALVE
- CHARGE VALVE
- ACCUMULATOR (FOR BRAKE)
- SLACK ADJUSTER
- BRAKE
- PARKING BRAKE CONTROL
- PARKING BRAKE
- HYDRAULIC PIPING
- WORK EQUIPMENT LEVER LINKAGE
- HYDRAULIC TANK
- 4-GEAR PUMP UNIT
- ACCUMULATOR (FOR PPC CIRCUIT)
- LOCK VALVE
- BYPASS VALVE
- QUICK COUPLER VALVE
- E.C.S.S. VALVE
- ACCUMULATOR (FOR E.C.S.S.)
- HYDRAULIC PIPING OF COOLING SYSTEM
- COOLING FAN MOTOR
- WORK EQUIPMENT CONTROL VALVE
- WORK EQUIPMENT PPC VALVE
- ATTACHMENT PPC VALVE (IF EQUIPPED)
- WORK EQUIPMENT LINKAGE
- BUCKET
- CONTROL OF BUCKET POSITIONER,
- WORK EQUIPMENT CYLINDER
- AIR CONDITIONER
- MACHINE MONITORING SYSTEM
- MACHINE MONITOR
- LIST OF ITEMS DISPLAYED ON MONITOR
- ELECTRICAL SYSTEM (HST CONTROLLER SYSTEM)
- HST CONTROLLER
- FUNCTION OF SELECTING FORWARD-REVERSE SELECTOR SWITCH
- ENGINE START CIRCUIT
- ENGINE STOP CIRCUIT
- PREHEATING CIRCUIT
- PARKING BRAKE CIRCUIT
- ELECTRONICALLY CONTROLLED SUSPENSION SYSTEM
- SENSORS
20 TESTING & ADJUSTING
- STANDARD VALUE TABLE FOR ENGINE
- STANDARD VALUE TABLE FOR CHASSIS
- TESTING AND ADJUSTING
- 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, TESTING OPERATING FORCE OF ACCELERATOR PEDAL
- ADJUSTING ENGINE STOP SOLENOID
- ADJUSTING ENGINE SPEED SENSOR
- MEASURING DIRECTIONAL LEVER
- TESTING AND ADJUSTING HST OIL PRESSURE
- MEASURING CLUTCH CONTROL PRESSURER
- TESTING AND ADJUSTING STEERING WHEEL
- TESTING AND ADJUSTING STEERING OIL PRESSURE
- BLEEDING AIR FROM STEERING CIRCUIT
- TESTING HYDRAULIC FAN
- MEASURING BRAKE PEDAL
- TESTING AND ADJUSTING BRAKE PEDAL LINKAGE
- MEASURING BRAKE PERFORMANCE
- TESTING AND ADJUSTING ACCUMULATOR CHARGE PRESSURE
- MEASURING BRAKE OIL PRESSURER
- MEASURING WEAR OF BRAKE DISC
- BLEEDING AIR FROM BRAKE CIRCUIT
- MEASURING PARKING BRAKE PERFORMANCE
- TESTING AND ADJUSTING PARKING BRAKE LINKAGE
- MEASURING PARKING BRAKE RELEASE PRESSURE
- MEASURING AND ADJUSTING WORK EQUIPMENT CONTROL LEVER
- TESTING AND ADJUSTING WORK EQUIPMENT HYDRAULIC PRESSURE
- TESTING AND ADJUSTING WORK EQUIPMENT PPC OIL PRESSURE
- BLEEDING AIR
- RELEASING REMAINING PRESSURE IN HYDRAULIC CIRCUIT
- TESTING AND ADJUSTING BUCKET POSITIONER
- TESTING AND ADJUSTING OF BOOM KICK-OUT
- CHECKING PROXIMITY SWITCH ACTUATION DISPLAY LAMP
- PROCEDURE FOR CHECKING DIODE
- SPECIAL FUNCTIONS OF MACHINE MONITOR
- FLOW OF MODES AND FUNCTIONS
- PM CLINIC INSPECTION CHART
- TROUBLESHOOTING
- TROUBLESHOOTING OF HST CONTROLLER SYSTEM (HST MODE)
- TROUBLESHOOTING OF HST CONTROLLER SYSTEM (HST MODE)
- TROUBLESHOOTING OF ELECTRICAL SYSTEM (E MODE)
- TROUBLESHOOTING OF HYDRAULIC, MECHANICAL SYSTEM (H MODE)
- TROUBLESHOOTING OF ENGINE (S MODE)
30 DISASSEMBLY & ASSEMBLY
- HOW TO READ THIS MANUAL
- PRECAUTIONS WHEN PERFORMING OPERATION
- SPECIAL TOOL LIST
- SKETCHES OF SPECIAL TOOLS
- REMOVAL, INSTALLATION OF FUEL INJECTION PUMP ASSEMBLY
- REMOVAL, INSTALLATION OF NOZZLE HOLDER ASSEMBLY
- REMOVAL, INSTALLATION OF CYLINDER HEAD ASSEMBLY
- REMOVAL, INSTALLATION OF ENGINE ASSEMBLY
- REMOVAL, INSTALLATION OF RADIATOR ASSEMBLY
- REMOVAL, INSTALLATION OF AIR AFTERCOOLER
- REMOVAL, INSTALLATION OF HYDRAULIC OIL COOLER ASSEMBLY
- REMOVAL, INSTALLATION OF COOLING FAN AND FAN MOTOR ASSEMBLY
- REMOVAL, INSTALLATION OF FUEL TANK ASSEMBLY
- REMOVAL, INSTALLATION OF TRANSFER
- DISASSEMBLY, ASSEMBLY OF TRANSFER ASSEMBLY
- REMOVAL, INSTALLATION OF PARKING BRAKE ASSEMBLY
- DISASSEMBLY, ASSEMBLY OF PARKING BRAKE ASSEMBLY
- REMOVAL, INSTALLATION OF FRONT AXLE ASSEMBLY
- REMOVAL, INSTALLATION OF REAR AXLE ASSEMBLY
- DISASSEMBLY, ASSEMBLY OF AXLE HOUSING ASSEMBLY
- DISASSEMBLY, ASSEMBLY OF DIFFERENTIAL ASSEMBLY
- REMOVAL, INSTALLATION OF HST PUMP AND 4-GEAR PUMP ASSEMBLY
- DISASSEMBLY AND ASSEMBLY OF HST PUMP ASSEMBLY
- REMOVAL, INSTALLATION OF HST MOTOR 1 ASSEMBLY
- REMOVAL, INSTALLATION OF HST MOTOR 2 ASSEMBLY
- DISASSEMBLY AND ASSEMBLY OF HST MOTOR ASSEMBLY
- REMOVAL, INSTALLATION OF WORK EQUIPMENT CONTROL VALVE ASSEMBLY
- REMOVAL, INSTALLATION OF TRAVEL DAMPER VALVE ASSEMBLY
- REMOVAL, INSTALLATION OF HYDRAULIC TANK ASSEMBLY
- REMOVAL, INSTALLATION OF WORK EQUIPMENT ASSEMBLY
- DISASSEMBLY, ASSEMBLY OF HYDRAULIC CYLINDER ASSEMBLY
- REMOVAL, INSTALLATION OF OPERATOR'S CAB ASSEMBLY
- REMOVAL, INSTALLATION OF OPERATOR'S CAB GLASS (STUCK GLASS)
- REMOVAL, INSTALLATION OF CENTER HINGE PIN
- REMOVAL, INSTALLATION OF COUNTERWEIGHT
- REMOVAL, INSTALLATION OF AIR CONDITIONER UNIT ASSEMBLY
- REMOVAL, INSTALLATION OF AIR CONDITIONER COMPRESSOR ASSEMBLY
- REMOVAL, INSTALLATION OF MONITOR PANEL
90 OTHERS
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