Description
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Model List:
- D20PL-7 Bull Dozer
- D20PLL-7 Bull Dozer
- D20AG-7 Bull Dozer
- D20P-7A Bull Dozer
- D20PG-7A Bull Dozer
- D21A-7 Bull Dozer
- D21S-7 Bull Dozer
- D21AG-7 Bull Dozer
- D21QG-7 Bull Dozer
- D21PG-7A Bull Dozer
- 1. COVER
- 2. CONTENTS
- 3. GENERAL
- 3.1. SPECIFICATION DRAWINGS
- 3.2. SPECIFICATIONS
- 3.3. WEIGHT TABLE
- 3.4. FUEL, COOLANT AND LUBRICANTS
- 4. STRUCTURE AND FUNCTION
- 4.1. ENGINE CONTROL
- 4.2. POWER TRAIN SYSTEM
- 4.3. POWER TRAIN SKELETON
- 4.4. POWER TRAIN HYDRAULIC PIPING
- 4.5. POWER TRAIN HYDRAULIC CIRCUIT DIAGRAM
- 4.6. POWER TRAIN HYDRAULIC SYSTEM
- 4.7. MAIN CLUTCH CONTROL
- 4.8. MAIN CLUTCH
- 4.9. TRANSMISSION
- 4.10. DAMPER AND UNIVERSAL JOINT
- 4.11. TRANSMISSION CONTROL
- 4.12. TRANSMISSION PUMP
- 4.13. HYDROSHIFT TRANSMISSION
- 4.14. TRANSMISSION CONTROL VALVE
- 4.15. STEERING CLUTCH AND BRAKE CONTROL
- 4.16. STEERING MAIN RELIEF VALVE
- 4.17. STEERING CYLINDER
- 4.18. BRAKE CYLINDER
- 4.19. PPC VALVE
- 4.20. BEVEL GEAR SHAFT AND STEERING CLUTCH
- 4.21. STEERING BRAKE
- 4.22. FINAL DRIVE
- 4.23. TRACK FRAME
- 4.24. MAIN FRAME AND SUSPENSION
- 4.25. HYDRAULIC PIPING
- 4.26. HYDRAULIC CIRCUIT DIAGRAM
- 4.27. HYDRAULIC CIRCUIT SYSTEM
- 4.28. HYDRAULIC CONTROL
- 4.29. HYDRAULIC TANK AND FILTER
- 4.30. ANGLE SELECTOR VALVE
- 4.31. HYDRAULIC CONTROL VALVE
- 4.32. OPERATION OF WORK EQUIPMENT CONTROL CIRCUIT
- 4.33. STRAIGHT TILTDOZER
- 4.34. POWER ANGLE AND TILTDOZER
- 4.35. BUCKET AND LINK
- 4.36. ELECTRICAL WIRING DIAGRAM
- 4.37. ENGINE CONTROL
- 4.38. MONITOR SYSTEM
- 4.39. SENSORS
- 5. TESTING AND ADJUSTING
- 5.1. STANDARD VALUE TABLE FOR ENGINE
- 5.2. STANDARD VALUE TABLE FOR CHASSIS
- 5.3. STANDARD VALUE TABLE FOR ELECTRICAL SYSTEM
- 5.4. TABLE OF TOOLS FOR TESTING, ADJUSTING AND TROUBLESHOOTING
- 5.5. MEASURING ENGINE SPEED
- 5.6. MEASURING EXHAUST COLOR
- 5.7. ADJUSTING VALVE CLEARANCE
- 5.8. MEASURING COMPRESSION PRESSURE
- 5.9. MEASURING BLOWBY
- 5.10. TESTING AND ADJUSTING FUEL INJECTION TIMING
- 5.11. BLEEDING AIR FROM FUEL CIRCUIT
- 5.12. MEASURING ENGINE OIL PRESSURE
- 5.13. TESTING AND ADJUSTING FAN BELT TENSION
- 5.14. ADJUSTING FUEL CONTROL LINKAGE
- 5.15. ADJUSTING DECELEREATOR PEDAL LINKAGE
- 5.16. MEASURING POWER TRAIN OIL PRESSURE
- 5.17. ADJUSTING PPC VALVE
- 5.18. BLEEDING AIR FROM STEERING CIRCUIT
- 5.19. MEASURING AND ADJUSTING WORK EQUIPMENT MAIN RELIEF PRESSURE
- 5.20. BLEEDING AIR FROM HYDRAULIC CYLINDERS
- 5.21. BLEEDING AIR FROM ANGLE CYLINDER CIRCUIT
- 5.22. ADJUSTING FUEL CONTROL LEVER
- 5.23. PROCEDURE FOR ADJUSTING ENGINE STOP MOTOR CABLE
- 5.24. ADJUSTING MAIN CLUTCH CONTROL LINKAGE
- 5.25. ADJUSTING TRANSMISSION CONTROL LINKAGE
- 5.26. ADJUSTING TRAVEL OF INCHING PEDAL
- 5.27. ADJUSTING STEERING CONTROL LINKAGE
- 5.28. ADJUSTING BRAKE PEDAL TRAVEL
- 5.29. ADJUSTING BRAKE PEDAL, BRAKE CYLINDER
- 5.30. ADJUSTING BRAKE LINING CLEARANCE
- 5.31. TROUBLESHOOTING
- 6. DISASSEMBLY AND ASSEMBLY
- 6.1. METHOD OF USING MANUAL
- 6.2. PRECAUTIONS WHEN HANDLING PIPING DURING DISASSEMBLY
- 6.3. PRECAUTIONS WHEN CARRYING OUT OPERATION
- 6.4. STARTING MOTOR REMOVAL AND INSTALLATION
- 6.5. ALTERNATOR REMOVAL AND INSTALLATION
- 6.6. FUEL INJECTION PUMP REMOVAL
- 6.7. FUEL INJECTION PUMP INSTALLATION
- 6.8. WATER PUMP REMOVAL AND INSTALLATION
- 6.9. THERMOSTAT REMOVAL AND INSTALLATION
- 6.10. NOZZLE HOLDER REMOVAL AND INSTALLATION
- 6.11. CYLINDER HEAD REMOVAL
- 6.12. CYLINDER HEAD INSTALLATION
- 6.13. RADIATOR GUARD REMOVAL
- 6.14. RADIATOR GUARD INSTALLATION
- 6.15. RADIATOR REMOVAL
- 6.16. RADIATOR INSTALLATION
- 6.17. ENGINE REMOVAL
- 6.18. ENGINE INSTALLATION
- 6.19. DAMPER (D217) REMOVAL
- 6.20. DAMPER (D217) INSTALLATION
- 6.21. MAIN CLUTCH (D207) REMOVAL
- 6.22. MAIN CLUTCH (D207) INSTALLATION
- 6.23. MAIN CLUTCH (D207) DISASSEMBLY
- 6.24. MAIN CLUTCH (D207) ASSEMBLY
- 6.25. TRANSMISSION (D207) REMOVAL
- 6.26. TRANSMISSION (D207) INSTALLATION
- 6.27. TRANSMISSION (D207) DISASSEMBLY
- 6.28. TRANSMISSION (D207) ASSEMBLY
- 6.29. HYDROSHIFT TRANSMISSION (D217) REMOVAL
- 6.30. HYDROSHIFT TRANSMISSION (D217) INSTALLATION
- 6.31. HYDROSHIFT TRANSMISSION (D217) DISASSEMBLY
- 6.32. HYDROSHIFT TRANSMISSION (D217) ASSEMBLY
- 6.33. STEERING PUMP REMOVAL AND INSTALLATION
- 6.34. MODULATING VALVE AND PUMP (D217) REMOVAL AND INSTALLATION
- 6.35. MODULATING VALVE (D217) DISASSEMBLY
- 6.36. MODULATING VALVE (D217) ASSEMBLY
- 6.37. SELECTOR AND INCHING VALVE (D217) REMOVAL AND INSTALLATION
- 6.38. SELECTOR AND INCHING VALVE (D217) DISASSEMBLY
- 6.39. SELECTOR AND INCHING VALVE (D217) ASSEMBLY
- 6.40. MAIN RELIEF VALVE REMOVAL AND INSTALLATION
- 6.41. STEERING PPC VALVE REMOVAL AND INSTALLATION
- 6.42. STEERING PPC VALVE DISASSEMBLY
- 6.43. STEERING PPC VALVE ASSEMBLY
- 6.44. STEERING CLUTCH REMOVAL
- 6.45. STEERING CLUTCH INSTALLATION
- 6.46. STEERING CLUTCH DISASSEMBLY
- 6.47. STEERING CLUTCH ASSEMBLY
- 6.48. BEVEL GEAR SHAFT AND BEVEL GEAR REMOVAL
- 6.49. BEVEL GEAR SHAFT AND BEVEL GEAR INSTALLATION
- 6.50. FINAL DRIVE REMOVAL AND INSTALLATION
- 6.51. FINAL DRIVE FIRST PINION REMOVAL
- 6.52. FINAL DRIVE FIRST PINION INSTALLATION
- 6.53. FINAL DRIVE DISASSEMBLY
- 6.54. FINAL DRIVE ASSEMBLY
- 6.55. POWER TRAIN OIL COOLER REMOVAL AND INSTALLATION
- 6.56. TRACK FRAME REMOVAL AND INSTALLATION (D20, 21AG7, D21A, S, QG7, D20P7A, D20, 21PG7A)
- 6.57. TRACK FRAME REMOVAL AND INSTALLATION (D20PL7, D20PLL7)
- 6.58. RECOIL SPRING REMOVAL AND INSTALLATION (D20, 21AG7, D21A, S, QG7, D20P7A, D20, 21PG7A)
- 6.59. RECOIL SPRING REMOVAL AND INSTALLATION (D20PL7, D20PLL7)
- 6.60. RECOIL SPRING REMOVAL AND INSTALLATION DISASSEMBLY AND ASSEMBLY
- 6.61. IDLER REMOVAL AND INSTALLATION
- 6.62. CARRIER ROLLER REMOVAL AND INSTALLATION
- 6.63. IDLER DISASSEMBLY
- 6.64. IDLER ASSEMBLY
- 6.65. CARRIER ROLLER DISASSEMBLY
- 6.66. CARRIER ROLLER ASSEMBLY
- 6.67. TRACK ROLLER REMOVAL AND INSTALLATION
- 6.68. TRACK ROLLER DISASSEMBLY
- 6.69. TRACK ROLLER ASSEMBLY
- 6.70. TRACK SHOE REMOVAL AND INSTALLATION
- 6.71. HYDRAULIC PUMP REMOVAL AND INSTALLATION
- 6.72. HYDRAULIC CONTROL VALVE REMOVAL AND INSTALLATION
- 6.73. HYDRAULIC CONTROL VALVE DISASSEMBLY (D20AG, PL7, D21A, AG7, D20P, PG7A, D21PG7A, D20PLL7)
- 6.74. HYDRAULIC CONTROL VALVE DISASSEMBLY (D21S, QG7)
- 6.75. HYDRAULIC CONTROL VALVE ASSEMBLY (D20AG, PL7, D21A, AG7, D20P, PG7A, D21PG7A, D20PLL7)
- 6.76. HYDRAULIC CONTROL VALVE ASSEMBLY (D21S, QG7)
- 6.77. BLADE LIFT CYLINDER REMOVAL AND INSTALLATION (D21A7, D20, 21AG7, D20P7A, D20, 21PG7A)
- 6.78. BLADE LIFT CYLINDER REMOVAL AND INSTALLATION (D20PL7, D20PLL7)
- 6.79. BLADE TILT CYLINDER REMOVAL AND INSTALLATION (D21A7, D20, 21AG7, D20P7A, D20, 21PG7A)
- 6.80. BLADE TILT CYLINDER REMOVAL AND INSTALLATION (D20PL7, D20PLL7)
- 6.81. BLADE ANGLE CYLINDER REMOVAL AND INSTALLATION
- 6.82. BUCKET LIFT CYLINDER (D21S, QG7) REMOVAL AND INSTALLATION
- 6.83. BUCKET DUMP CYLINDER (D21S, QG7) REMOVAL AND INSTALLATION
- 6.84. HYDRAULIC CYLINDER DISASSEMBLY
- 6.85. HYDRAULIC CYLINDER ASSEMBLY
- 6.86. WORK EQUIPMENT REMOVAL AND INSTALLATION (D21A7, D20, 21AG7, D20P7A, D20, 21PG7A)
- 6.87. WORK EQUIPMENT REMOVAL AND INSTALLATION (D20PL, PLL7)
- 6.88. BLADE REMOVAL AND INSTALLATION (D21A7, D20, 21AG7, D20P7A, D20, 21PG7A)
- 6.89. BLADE REMOVAL AND INSTALLATION (D20PL, PLL7)
- 6.90. WORK EQUIPMENT (D21S, QG7) REMOVAL INSTALLATION
- 6.91. BUCKET (D21S, QG7) REMOVAL AND INSTALLATION
- 6.92. OPERATORS SEAT FRAME REMOVAL
- 6.93. OPERATORS SEAT FRAME INSTALLATION
- 7. MAINTENANCE STANDARD
- 7.1. MAIN CLUTCH
- 7.2. TRANSMISSION
- 7.3. DAMPER AND UNIVERSAL JOINT
- 7.4. HYDROSHIFT TRANSMISSION
- 7.5. TRANSMISSION CONTROL VALVE
- 7.6. MAIN CLUTCH AND STEERING PUMP
- 7.7. STEERING MAIN RELIEF VALVE
- 7.8. TRANSMISSION AND STEERING PUMP
- 7.9. PPC VALVE
- 7.10. STEERING CYLINDER
- 7.11. BEVEL GEAR SHAFT
- 7.12. STEERING CLUTCH
- 7.13. TRACK SHOE (LUBRICATED TRACK LINK) D20PL, PLL7, D21A7, D20P7A
- 7.14. TRACK SHOE (DRY TYPE TRACK LINK) D20PL, PLL7, D21A7, D20P7A
- 7.15. TRACK SHOE (LUBRICATED TRACK LINK) D21S7
- 7.16. TRACK SHOE (DRY TYPE TRACK LINK) D21S7
- 7.17. RUBBER CRAWLER
- 7.18. HYDRAULIC PUMP
- 7.19. HYDRAULIC CONTROL VALVE
- 7.20. HYDRAULIC CYLINDER
- 7.21. STRAIGHT TILTDOZER
- 7.22. POWER ANGLE AND TILTDOZER
- 7.23. BUCKET AND LINK
- 8. OTHERS
- 8.1. TRIMMING DOZER
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