Komatsu D21A-8, D21P-8, D21PL-8 Bull Dozer Shop Manual SEN06706-01

Description

• Model List:
  • D21A-8 Bull Dozer
  • D21P-8 Bull Dozer
  • D21PL-8 Bull Dozer

• 0.1. HOW TO READ THE SHOP MANUAL
• 0.2. HOISTING INSTRUCTIONS
• 0.3. METHOD OF DISASSEMBLING, CONNECTING PUSHPULL TYPE COUPLER
• 0.4. COATING MATERIALS
• 0.5. STANDARD TIGHTENING TORQUE
• 0.6. ELECTRIC WIRE CODE
• 0.7. CONVERSION TABLE
• 1. GENERAL
• 1.1. SPECIFICATION DRAWINGS
• 1.2. SPECIFICATIONS
• 1.3. WEIGHT TABLE
• 1.4. FUEL, COOLANT AND LUBRICANTS
• 2. STRUCTURE AND FUNCTION
• 2.1. ENGINE CONTROL
• 2.2. POWER TRAIN SYSTEM
• 2.3. POWER TRAIN SKELETON
• 2.4. POWER TRAIN HYDRAULIC PIPING
• 2.5. DAMPER AND UNIVERSAL JOINT
• 2.6. TRANSMISSION CONTROL
• 2.7. TRANSMISSION PUMP
• 2.8. HYDROSHIFT TRANSMISSION
• 2.9. TRANSMISSION CONTROL VALVE
• 2.10. STEERING CLUTCH AND BRAKE CONTROL
• 2.11. STEERING CYLINDER
• 2.12. BRAKE CYLINDER
• 2.13. PPC VALVE
• 2.14. BEVEL GEAR SHAFT AND STEERING CLUTCH
• 2.15. STEERING BRAKE
• 2.16. FINAL DRIVE
• 2.17. TRACK FRAME
• 2.18. MAIN FRAME AND SUSPENSION
• 2.19. HYDRAULIC PIPING
• 2.20. HYDRAULIC CONTROL
• 2.21. HYDRAULIC TANK AND FILTER
• 2.22. HYDRAULIC CONTROL VALVE
• 2.23. OPERATION OF WORK EQUIPMENT CONTROL CIRCUIT
• 2.24. POWER ANGLE AND POWER TILTDOZER
• 2.25. STRAIGHT TILTDOZER
• 2.26. ENGINE CONTROL
• 2.27. MONITOR SYSTEM
• 2.28. SENSORS
• 3. TESTING AND ADJUSTING
• 3.1. STANDARD VALUE TABLE FOR ENGINE
• 3.2. STANDARD VALUE TABLE FOR CHASSIS
• 3.3. TESTING AND ADJUSTING
• 3.3.1. LIST OF TESTING, ADJUSTING, AND TROUBLESHOOTING TOOLS
• 3.3.2. MEASURING ENGINE SPEED
• 3.3.3. MEASUREMENT OF EXHAUST GAS COLOR
• 3.3.4. ADJUSTING VALVE CLEARANCE
• 3.3.5. MEASURING COMPRESSION PRESSURE
• 3.3.6. TESTING AND ADJUSTING FUEL INJECTION TIMING
• 3.3.7. BLEEDING AIR FROM FUEL CIRCUIT
• 3.3.8. MEASURING ENGINE OIL PRESSURE
• 3.3.9. TESTING AND ADJUSTING FAN BELT TENSION
• 3.3.10. ADJUSTING FUEL CONTROL LINKAGE
• 3.3.11. MEASURING POWER TRAIN OIL PRESSURE
• 3.3.12. ADJUSTING PPC VALVE
• 3.3.13. BLEEDING AIR FROM STEERING CIRCUIT
• 3.3.14. MEASURING AND ADJUSTING WORK EQUIPMENT MAIN RELIEF PRESSURE
• 3.3.15. BLEEDING AIR FROM HYDRAULIC CYLINDERS
• 3.3.16. BLEEDING AIR FROM ANGLE CYLINDERS CIRCUIT
• 3.3.17. ADJUSTING FUEL CONTROL LEVER
• 3.3.18. ADJUSTING TRAVEL OF INCHING PEDAL
• 3.3.19. ADJUSTING STEERING CONTROL LINKAGE
• 3.3.20. ADJUSTING BRAKE PEDAL, BRAKE CYLINDER
• 3.3.21. ADJUSTING BRAKE LINING CLEARANCE
• 3.4. TROUBLESHOOTING
• 3.4.1. POINTS TO REMEMBER WHEN TROUBLESHOOTING
• 3.4.2. SEQUENCE OF EVENTS IN TROUBLESHOOTING
• 3.4.3. POINTS TO REMEMBER WHEN CARRYING OUT MAINTENANCE
• 3.4.4. CHECKS BEFORE TROUBLESHOOTING
• 3.4.5. CLASSIFICATION AND STEPS FOR TROUBLESHOOTING
• 3.4.6. TYPES AND LOCATIONS OF CONNECTORS
• 3.4.7. CONNECTION TABLE FOR CONNECTOR PIN NUMBERS
• 3.4.8. TBRANCH BOX AND TBRANCH TABLE
• 3.4.9. TROUBLESHOOTING OF ELECTRICAL SYSTEM (E MODE)
• 3.4.10. TROUBLESHOOTING OF HYDRAULIC, MECHANICAL SYSTEM (H MODE)
• 3.4.11. TROUBLESHOOTING OF ENGINE (S MODE)
• 4. DISASSEMBLY AND ASSEMBLY
• 4.1. METHOD OF USING MANUAL
• 4.2. PRECAUTIONS WHEN CARRYING OUT OPERATION
• 4.3. FUEL INJECTION PUMP
• 4.4. HYDROSHIFT TRANSMISSION
• 4.4.1. DISASSEMBLY
• 4.4.2. ASSEMBLY
• 4.5. MODULATING VALVE
• 4.5.1. ASSEMBLY
• 4.6. SELECTOR AND INCHING VALVE
• 4.6.1. ASSEMBLY
• 4.7. STEERING PPC VALVE
• 4.7.1. ASSEMBLY
• 4.8. STEERING CLUTCH
• 4.8.1. REMOVAL
• 4.8.2. INSTALLATION
• 4.8.3. DISASSEMBLY
• 4.8.4. ASSEMBLY
• 4.9. BEVEL GEAR SHAFT AND BEVEL GEAR
• 4.9.1. REMOVAL
• 4.9.2. INSTALLATION
• 4.10. FINAL DRIVE
• 4.10.1. REMOVAL AND INSTALLATION
• 4.11. FINAL DRIVE FIRST PINION
• 4.12. POWER TRAIN OIL COOLER
• 4.12.1. REMOVAL AND INSTALLATION
• 4.13. RECOIL SPRING
• 4.13.1. REMOVAL AND INSTALLATION
• 4.13.2. DISASSEMBLY AND ASSEMBLY
• 4.14. TRACK SHOE
• 4.14.1. REMOVAL AND INSTALLATION
• 4.15. HYDRAULIC CONTROL VALVE
• 4.15.1. ASSEMBLY
• 4.16. HYDRAULIC CYLINDER
• 4.16.1. ASSEMBLY
• 4.17. BLADE
• 4.17.1. REMOVAL AND INSTALLATION
• 5. MAINTENANCE STANDARD
• 5.1. DAMPER AND UNIVERSAL JOINT
• 5.2. HYDROSHIFT TRANSMISSION
• 5.3. TRANSMISSION CONTROL VALVE
• 5.4. TRANSMISSION AND STEERING PUMP
• 5.5. PPC VALVE
• 5.6. STEERING CYLINDER
• 5.7. BEVEL GEAR SHAFT
• 5.8. STEERING CLUTCH
• 5.9. TRACK SHOE (LUBRICATED TRACK LINK)
• 5.10. RUBBER CRAWLER
• 5.11. HYDRAULIC PUMP
• 5.12. HYDRAULIC CONTROL VALVE
• 5.13. HYDRAULIC CYLINDER
• 5.14. POWER ANGLE AND POWER TILTDOZER
• 5.15. STRAIGHT TILTDOZER
• 6. OTHERS
• 6.1. POWER TRAIN HYDRAULIC CIRCUIT DIAGRAM (F2, R2 TRANSMISSION)
• 6.2. POWER TRAIN HYDRAULIC SYSTEM (F2, R2 TRANSMISSION)
• 6.3. POWER TRAIN HYDRAULIC CIRCUIT DIAGRAM (F3, R3 TRANSMISSION)
• 6.4. POWER TRAIN HYDRAULIC SYSTEM (F3, R3 TRANSMISSION)
• 6.5. HYDRAULIC CIRCUIT DIAGRAM
• 6.6. HYDRAULIC CIRCUIT SYSTEM
• 6.7. WORK EQUIPMENT HYDRAULIC CIRCUIT DIAGRAM
• 6.8. WORK EQUIPMENT HYDRAULIC SYSTEM DIAGRAM
• 6.9. ELECTRICAL WIRING DIAGRAM
• 6.10. CAB AND AIR CONDITIONER ELECTRICAL CIRCUIT
• 6.11. TRIMMING DOZER
• 6.11.1. CONTENTS
• 6.11.2. OUTLINE
• 6.11.3. STRUCTURE AND FUNCTION
• 6.11.4. MAINTENANCE STANDARD