Komatsu WB93R-5 Backhoe Loader Shop Manual WEBM005800

Description

• Model List:
  • WB93R-5 Backhoe Loader

• 1. WEBM005800_WB93R5
• 1.1. CONTENTS
• 1.2. REVISED PAGES
• 1.3. k SAFETY
• 1.4. FOREWORD
• 1.5. HOW TO READ THE SHOP MANUAL
• 1.6. HOISTING INSTRUCTIONS
• 1.7. STANDARD TIGHTENING TORQUE
• 1.8. COATING MATERIALS
• 1.9. ELECTRIC
• 1.10. WEIGHT TABLE
• 1.11. TABLE OF OIL AND COOLANT QUANTITIES
• 1.12. CONVERSION TABLE
• 1.13. STRUCTURE AND FUNCTION
• 1.13.1. POWER TRAIN
• 1.13.2. TRANSMISSION (4WD)
• 1.13.3. TRANSMISSION
• 1.13.4. DRIVE SHAFTS
• 1.13.5. CONTROL VALVE BLOCK
• 1.13.6. FRONT AXLE
• 1.13.7. REAR AXLE
• 1.13.8. HYDRAULIC CIRCUIT (WITH MECHANICAL CONTROL)
• 1.13.9. HYDRAULIC CIRCUIT (WITH SERVOCONTROL)
• 1.13.10. HYDRAULIC PUMP
• 1.13.11. SPOOL CONTROL VALVE (WITH MECHANICAL CONTROL)
• 1.13.12. SPOOL CONTROL VALVE (WITH MECHANICAL CONTROL)
• 1.13.13. SPOOL CONTROL VALVE (WITH SERVOCONTROL)
• 1.13.14. SPOOL CONTROL VALVE (WITH SERVOCONTROL)
• 1.13.15. CLSS
• 1.13.16. STEERING UNIT
• 1.13.17. PPC VALVES
• 1.13.18. PPC VALVE (SERVOCONTROL VERSION)
• 1.13.19. SOLENOID VALVE GROUP (EV1)
• 1.13.20. SAFETY VALVES
• 1.13.21. SHOVEL CYLINDERS
• 1.13.22. BACKHOE CYLINDERS
• 1.13.23. AIRCONDITIONING UNIT
• 1.13.24. HOW THE AIRCONDITIONING UNIT FUNCTIONS
• 1.13.25. FUSE AND RELAY CENTRE
• 1.13.26. DRIVER SEAT WIRING
• 1.13.27. SWITCH PANEL WIRING
• 1.13.28. FRONT DASH WIRING
• 1.13.29. ROOF WIRING
• 1.13.30. ENGINE WIRING
• 1.13.31. SPEED SELECTOR WIRING
• 1.13.32. BACKHOE WIRING
• 1.13.33. JIG ARM WIRING
• 1.13.34. WIRING DIAGRAM (STANDARD VERSION) (see also Group 90)
• 1.14. TESTING AND ADJUSTMENTS
• 1.14.1. NORMAL OR STANDARD TECHNICAL DATA
• 1.14.2. SPECIAL TOOLS
• 1.14.3. ADJUSTING VALVE CLEARANCE
• 1.14.4. ENGINE SPEED TESTS
• 1.14.5. TENSIONING THE AIRCONDITIONING COMPRESSOR BELT
• 1.14.6. BLEEDING AIR FROM CIRCUITS ELIMINATING RESIDUAL PRESSURE
• 1.14.7. ADJUSTING ACCELERATOR PEDAL TRAVEL AND ACCELERATOR LEVER
• 1.14.8. ADJUSTING BRAKE PEDAL
• 1.14.9. CHECKING AND SETTING PRESSURE IN THE ATTACHMENTS HYDRAULIC CIRCUIT
• 1.14.10. CHECKING THE SETTING OF MAIN RELIEF AND SECONDARY VALVES
• 1.14.11. SETTING THE MAIN RELIEF VALVES AND THE REDUCING VALVES
• 1.14.12. CHECKING AND ADJUSTING THE LS DIFFERENTIAL PRESSURE. ADJUSTING THE LS VALVE
• 1.14.13. CHECKING AND ADJUSTING SERVOCONTROLS SUPPLY PRESSURE
• 1.14.14. ADJUSTING THE PC VALVE
• 1.14.15. TESTING AND SETTING STEERING CONTROL SYSTEM PRESSURE
• 1.14.16. CHECKING FOR LEAKS IN THE STEERING CYLINDERS
• 1.14.17. TESTING PRESSURES IN THE POWER TRAIN GROUP
• 1.14.18. TESTING THE CORRECT FUNCTIONING OF THE POWER TRAINCLUTCHES
• 1.14.19. ANALYSIS OF CAUSES HYDRAULIC DRIFT
• 1.14.20. TESTING THE AIRCONDITIONING UNIT
• 1.14.21. EMPTYING THE AIRCONDITIONING UNIT
• 1.14.22. TROUBLESHOOTING
• 1.15. REMOVAL AND INSTALLATION
• 1.15.1. HOW TO READ THE MANUAL
• 1.15.2. PRECAUTIONS TO BE TAKEN WHILE WORKING
• 1.15.3. CONDENSER (For machines equipped with an airconditioning unit)
• 1.15.4. AIRCONDITIONING UNIT COMPRESSOR
• 1.15.4.1. Removal
• 1.15.4.2. Installation
• 1.15.5. AIRCONDITIONING UNIT COMPRESSOR BELT
• 1.15.6. FAN AND HEATING GROUP
• 1.15.7. STEERING WHEEL AND TRANSMISSIONREVERSE, DIRECTION INDICATOR AND HEADLIGHT DIPPER BEAM CONTROL GROUP
• 1.15.7.1. Removal
• 1.15.7.2. Installation
• 1.15.8. WORKING BRAKE PUMP GROUP
• 1.15.9. HYDRAULIC OIL TANK
• 1.15.9.1. Disassembly and assembly
• 1.15.10. CONTROL VALVE (Standard version)
• 1.15.10.1. Removal
• 1.15.10.2. Installation
• 1.15.11. CONTROL VALVE (version with servocontrol)
• 1.15.11.1. Disassembly and assembly
• 1.15.12. REAR AXLE
• 1.15.12.1. Removal
• 1.15.12.2. Installation
• 1.15.12.3. Disassembly and assembly
• 1.15.13. SHOVEL PPC VALVE
• 1.15.13.1. Removal
• 1.15.13.2. Installation
• 1.15.14. SHOVEL LIFT CYLINDERS
• 1.15.14.1. Removal
• 1.15.14.2. Installation
• 1.15.15. SHOVEL DUMP CYLINDERS
• 1.15.16. FRONT WORKING EQUIPMENT
• 1.15.16.1. Removal
• 1.15.16.2. Installation
• 1.15.17. BACKHOE PPC VALVES (Optional)
• 1.15.17.1. Removal
• 1.15.17.2. Installation
• 1.15.18. PPC VALVE SUPPORT RELEASE CABLES
• 1.15.18.1. Removal
• 1.15.18.2. Installation and adjusting
• 1.15.19. PPC VALVE SUPPORT RETURN GAS SPRING
• 1.15.19.1. Removal
• 1.15.19.2. Installation
• 1.15.20. SOLENOID VALVE GROUP (servocontrol and optional attachment)
• 1.15.20.1. Removal
• 1.15.20.2. Installation
• 1.15.21. BACKHOE BOOM CYLINDER
• 1.15.22. JIG ARM CYLINDER
• 1.15.22.1. Removal
• 1.15.22.2. Installation
• 1.15.23. OUTRIGGER CYLINDER
• 1.15.23.1. Removal
• 1.15.23.2. Installation
• 1.15.24. BACKHOE SWING CYLINDERS
• 1.15.24.1. Removal
• 1.15.24.2. Installation
• 1.15.25. BACKHOE BUCKET CYLINDER
• 1.15.25.1. Removal
• 1.15.25.2. Installation
• 1.15.26. BACKHOE BOOM SAFETY CYLINDER
• 1.15.26.1. Removal
• 1.15.26.2. Installation
• 1.15.27. BACKHOE WORKING EQUIPMENT
• 1.15.28. BACKHOE BOOM CYLINDER
• 1.15.29. BACKHOE SWING BRACKET
• 1.15.29.1. Removal
• 1.15.29.2. Installation
• 1.15.30. COMPLETE BACKHOE BACKFRAME
• 1.15.30.1. Removal
• 1.15.30.2. Installation
• 1.15.31. BACKFRAME LOCK PISTONS
• 1.15.31.1. Removal
• 1.15.31.2. Installation
• 1.16. STANDARD MAINTENANCE
• 1.16.1. SHOVEL CYLINDERS
• 1.16.2. BACKHOE CYLINDERS
• 1.16.3. FRONT WORKING EQUIPMENT
• 1.16.4. SWING BRACKET
• 1.16.5. BACKHOE WORKING EQUIPMENT
• 1.17. OTHER
• 1.17.1. ELECTRICAL DIAGRAM (STANDARD VERSION)