Komatsu WB93S-5E0 Backhoe Loader Shop Manual WEBM008301

Description

• Model List:
  • WB93S-5E0 Backhoe Loader

• 1. CONTENTS
• 2. REVISED PAGES
• 3. k SAFETY
• 4. FOREWORD
• 5. HOW TO READ THE SHOP MANUAL
• 6. HOISTING INSTRUCTIONS
• 7. STANDARD TIGHTENING TORQUE
• 8. COATING MATERIALS
• 9. ELECTRIC
• 10. WEIGHT TABLE
• 11. TABLE OF OIL AND COOLANT QUANTITIES
• 12. CONVERSION TABLE
• 13. STRUCTURE AND FUNCTION
• 13.1. POWER TRAIN
• 13.2. TRANSMISSION (4WD)
• 13.3. TRANSMISSION
• 13.4. DRIVE SHAFTS
• 13.5. CONTROL VALVE BLOCK
• 13.6. FRONT AXLE
• 13.7. REAR AXLE
• 13.8. STEERING SYSTEM (4WS)
• 13.9. HYDRAULIC CIRCUIT (WITH MECHANICAL CONTROL)
• 13.10. HYDRAULIC CIRCUIT (WITH SERVOCONTROL)
• 13.11. HYDRAULIC PUMP
• 13.11.1. MAIN PUMP
• 13.11.2. DELIVERY CONTROL VALVE
• 13.12. SPOOL CONTROL VALVE (WITH MECHANICAL CONTROL)
• 13.13. SPOOL CONTROL VALVE (WITH MECHANICAL CONTROL)
• 13.14. SPOOL CONTROL VALVE (WITH SERVOCONTROL)
• 13.15. SPOOL CONTROL VALVE (WITH SERVOCONTROL)
• 13.16. CLSS
• 13.16.1. DESCRIPTION
• 13.16.2. OPERATING PRINCIPLES
• 13.16.3. OPERATION FOR EACH CIRCUIT AND VALVE
• 13.17. STEERING UNIT
• 13.18. PPC VALVES
• 13.18.1. SHOVEL PPC VALVE (STANDARD)
• 13.18.2. SHOVEL PPC VALVE (FLOAT RETURN TO DIG)
• 13.18.3. OUTRIGGERS PPC VALVE
• 13.19. PPC VALVE (BACKHOE CONTROL)
• 13.19.1. PPC VALVE
• 13.19.2. PPC VALVE
• 13.20. SOLENOID VALVE GROUP (EV1)
• 13.20.1. VERSION WITH MECHANICAL CONTROLS WITHOUT 4 IN 1 BUCKET
• 13.20.2. VERSION SERVOCONTROL WITHOUT 4 IN 1 BUCKET
• 13.20.3. VERSION WITH MECHANICAL CONTROLS WITH 4 IN 1 BUCKET
• 13.20.4. VERSION SERVOCONTROL WITH 4 IN 1 BUCKET
• 13.21. SOLENOID VALVE GROUP (EV2)
• 13.22. SHOVEL CYLINDERS
• 13.22.1. RAISING CYLINDER
• 13.22.2. DUMPING CYLINDER
• 13.22.3. IN 1 BUCKET
• 13.23. BACKHOE CYLINDERS
• 13.23.1. BOOM CYLINDER
• 13.23.3. BUCKET CYLINDER
• 13.23.4. OUTRIGGER CYLINDER
• 13.23.5. BOOM SWING CYLINDER
• 13.23.6. JIG ARM CYLINDER
• 13.24. AIRCONDITIONING UNIT
• 13.25. OPERATION OF THE AIR CONDITIONING UNIT
• 13.26. FUSE AND RELAY CENTRE
• 13.27. DRIVER SEAT WIRING
• 13.28. SWITCH PANEL WIRING
• 13.29. FRONT DASH WIRING
• 13.30. ROOF WIRING
• 13.31. ENGINE WIRING
• 13.32. SPEED SELECTOR WIRING
• 13.33. BACKHOE WIRING
• 13.34. S PUSHBUTTONS PANEL WIRING
• 13.35. D SOLENOID VALVES WIRING
• 13.36. WIRING DIAGRAM (STANDARD VERSION) (see also Group 90)
• 14. TESTING AND ADJUSTMENTS
• 14.1. NORMAL OR STANDARD TECHNICAL DATA
• 14.2. SPECIAL TOOLS
• 14.3. VALVE CLEARANCE ADJUSTING
• 14.4. ENGINE SPEED TESTS
• 14.5. TENSIONING THE AIRCONDITIONING COMPRESSOR BELT
• 14.6. BLEEDING AIR FROM CIRCUITS ELIMINATING RESIDUAL PRESSURE
• 14.7. ADJUSTING ACCELERATOR PEDAL TRAVEL AND ACCELERATOR LEVER
• 14.8. ADJUSTING BRAKE PEDAL SLACK/ALIGNMENT
• 14.9. BRAKING SYSTEM CHECKS
• 14.10. PARKING BRAKE ADJUSTMENT
• 14.11. CHECKING AND SETTING PRESSURE IN THE ATTACHMENTS HYDRAULIC CIRCUIT
• 14.12. CHECKING THE SETTING OF MAIN RELIEF AND SECONDARY VALVES
• 14.13. SETTING THE MAIN RELIEF VALVES AND THE REDUCING VALVES
• 14.14. CHECKING AND ADJUSTING THE LS DIFFERENTIAL PRESSURE. ADJUSTING THE LS VALVE
• 14.15. CHECKING AND ADJUSTING SERVOCONTROLS SUPPLY PRESSURE
• 14.16. ADJUSTING THE PC VALVE
• 14.17. TESTING AND SETTING STEERING CONTROL SYSTEM PRESSURE
• 14.18. CHECKING FOR LEAKS IN THE STEERING CYLINDERS
• 14.19. TESTING PRESSURES IN THE POWER TRAIN GROUP
• 14.20. TESTING THE CORRECT FUNCTIONING OF THE POWER TRAINCLUTCHES
• 14.21. ANALYSIS OF CAUSES HYDRAULIC DRIFT
• 14.21.1. FRONT EQUIPMENT
• 14.21.2. BACKHOE
• 14.22. JIG ARM CLEARANCE ADJUSTMENT
• 14.23. TESTING THE AIRCONDITIONING UNIT
• 14.24. EMPTYING THE AIRCONDITIONING UNIT
• 14.25. TROUBLESHOOTING
• 14.25.1. FRONT AXLE TROUBLESHOOTING
• 14.25.2. FRONT AXLE CHECKING AND TROUBLESHOOTING
• 14.25.3. REAR AXLE TROUBLESHOOTING
• 14.25.4. REAR AXLE CHECKING AND TROUBLESHOOTING
• 14.25.5. TRANSMISSION TROUBLESHOOTING
• 15. REMOVAL AND INSTALLATION
• 15.1. HOW TO READ THE MANUAL
• 15.2. PRECAUTIONS TO BE TAKEN WHILE WORKING
• 15.3. RADIATOR GROUP INTERCOOLER
• 15.4. CONDENSER (For machines equipped with an airconditioning unit)
• 15.5. AIRCONDITIONING UNIT COMPRESSOR
• 15.5.1. Removal
• 15.5.2. Installation
• 15.6. AIRCONDITIONING UNIT COMPRESSOR BELT
• 15.6.1. Removal
• 15.6.2. Installation
• 15.7. FAN AND HEATING GROUP
• 15.8. STEERING WHEEL AND TRANSMISSIONREVERSE, DIRECTION INDICATOR AND HEADLIGHT DIPPER BEAM CONTROL GROUP
• 15.8.1. Removal
• 15.8.2. Installation
• 15.9. WORKING BRAKE PUMP GROUP
• 15.10. HYDRAULIC OIL TANK
• 15.10.1. Disassembly and assembly
• 15.11. CONTROL VALVE (Standard version)
• 15.11.1. Removal
• 15.11.2. Installation
• 15.12. CONTROL VALVE (version with servocontrol)
• 15.12.1. Removal
• 15.12.2. Installation
• 15.13. STEERING SOLENOID VALVE GROUP
• 15.13.1. Disassembly and assembly
• 15.14. REAR AXLE
• 15.14.1. Removal
• 15.14.2. Installation
• 15.14.3. Disassembly and assembly
• 15.15. SHOVEL PPC VALVE
• 15.15.1. Removal
• 15.15.2. Installation
• 15.16. SHOVEL LIFT CYLINDERS
• 15.16.1. Removal
• 15.16.2. Installation
• 15.17. SHOVEL DUMP CYLINDERS
• 15.18. FRONT WORKING EQUIPMENT
• 15.18.1. Removal
• 15.18.2. Installation
• 15.19. BACKHOE PPC VALVES (Optional)
• 15.19.1. Removal
• 15.19.2. Installation
• 15.20. PPC VALVE SUPPORT RELEASE CABLES
• 15.20.1. Removal
• 15.20.2. Installation
• 15.21. PPC VALVE SUPPORT RETURN GAS SPRING
• 15.21.1. Removal
• 15.21.2. Installation
• 15.22. SOLENOID VALVE GROUP (servocontrol and optional attachment)
• 15.22.1. Removal
• 15.22.2. Installation
• 15.23. BACKHOE BOOM CYLINDER
• 15.24. JIG ARM CYLINDER
• 15.24.1. Removal
• 15.24.2. Installation
• 15.25. OUTRIGGER CYLINDER
• 15.25.1. Removal
• 15.25.2. Installation
• 15.26. BACKHOE SWING CYLINDERS
• 15.26.1. Removal
• 15.26.2. Installation
• 15.27. BACKHOE BUCKET CYLINDER
• 15.27.1. Removal
• 15.27.2. Installation
• 15.28. BACKHOE BOOM SAFETY CYLINDER
• 15.28.1. Removal
• 15.28.2. Installation
• 15.29. CYLINDER
• 15.29.1. SHOVEL ARM, SHOVEL, BOOM, ARM, BUCKET, OUTRIGGERS
• 15.29.1.1. Disassembly
• 15.29.1.2. Assembly
• 15.29.2. BACKHOE SWING CYLINDERS
• 15.29.2.1. Disassembly
• 15.29.2.2. Assembly
• 15.30. BACKHOE WORKING EQUIPMENT
• 15.31. BACKHOE BOOM CYLINDER
• 15.32. BACKHOE SWING BRACKET
• 15.32.1. Removal
• 15.32.2. Installation
• 15.33. COMPLETE BACKHOE BACKFRAME
• 15.33.1. Removal
• 15.33.2. Installation
• 15.34. BACKFRAME LOCK PISTONS
• 15.34.1. Removal
• 15.34.2. Installation
• 16. STANDARD MAINTENANCE
• 16.0.1. SPOOL VERSION (WITH MECHANICAL CONTROL)
• 16.0.2. SPOOL VERSION (WITH MECHANICAL CONTROL)
• 16.0.3. SPOOL VERSION (WITH SERVOCONTROL)
• 16.0.4. SPOOL VERSION (WITH SERVOCONTROL)
• 16.1. PPC VALVES
• 16.1.1. SHOVEL CONTROL
• 16.2. SHOVEL CYLINDERS
• 16.2.1. DUMP CYLINDER
• 16.2.2. RAISE CYLINDER
• 16.2.3. IN 1 BUCKET
• 16.3. BACKHOE CYLINDERS
• 16.4. FRONT WORKING EQUIPMENT
• 16.5. SWING BRACKET
• 16.6. BACKHOE WORKING EQUIPMENT
• 17. OTHER
• 17.1. ELECTRICAL DIAGRAM (STANDARD VERSION)