Komatsu PC75R-2 Hydraulic Excavator Shop Manual WEBM001501

Description

• Model List:
  • PC75R-2 Hydraulic Excavator

• 1. COVER
• 2. CONTENTS
• 3. LIST OF REVISED PAGES
• 4. SAFETY
• 5. FOREWORD
• 6. HOW TO READ THE SHOP MANUAL
• 7. HOISTING INSTRUCTIONS
• 8. STANDARD TIGHTENING TORQUE
• 9. COATING MATERIALS
• 10. ELECTRIC WIRE CODE
• 11. WEIGHT TABLE
• 12. TABLE OF OIL AND COOLANT QUANTITIES
• 13. STRUCTURE AND FUNCTION
• 15. POWER TRAIN
• 16. TRACK FRAME
• 17. IDLER AND RECOIL SPRING
• 18. CARRIER ROLLER TRACK ROLLER
• 19. TRACK SHOE
• 20. SWING CIRCLE
• 21. SWING MACHINERY
• 22. HYDRAULIC CIRCUIT DIAGRAM (STANDARD)
• 23. HYDRAULIC CIRCUIT DIAGRAM (2PIECE BOOM)
• 24. HYDRAULIC PUMP
• 25. MAIN HYDRAULIC PUMP
• 26. PC VALVE, LS VALVE, SERVO PISTON
• 27. LS VALVE
• 28. PC VALVE (POWER CONTROL)
• 29. SPOOL CONTROL VALVE (STANDARD)
• 30. SPOOL CONTROL VALVE (STANDARD 2PIECE BOOM)
• 31. SWING MOTOR
• 32. CENTER SWIVEL JOINT
• 33. SERVOCONTROL FEED UNIT
• 34. ACCUMULATOR
• 35. PPC VALVE
• 36. PPC VALVE (BLADE, BOOM SWING, 2PIECE BOOM)
• 37. TRAVEL PPC VALVE
• 38. BOOM AND ARM SAFETY VALVE
• 39. BLADE SAFETY VALVE
• 40. PIECE BOOM SAFETY VALVE
• 41. OVERLOAD SENSOR SWITCH
• 42. SOLENOID VALVE SOLENOID VALVE GROUP ST1
• 43. SOLENOID VALVE GROUP OP1 (Y3Y4)
• 44. ELECTRICAL DIAGRAM (1/3)
• 45. ELECTRICAL DIAGRAM (2/3)
• 46. ELECTRICAL DIAGRAM (3/3)
• 47. TESTING AND ADJUSTMENTS
• 48. NORMAL OR STANDARD TECHNICAL DATA
• 49. EQUIPMENT FOR TESTING, ADJUSTING, AND IDENTIFYING FRAULTS
• 50. MEASURING THE ENGINE SPEED
• 51. ADJUSTING VALVE CLEARANCE
• 52. MEASURING COMPRESSION PRESSURE
• 53. TESTING AND ADJUSTING FUEL INJECTION TIMING
• 54. TESTING AND ADJUSTING FAN BEL TENSION
• 55. ADJUSTING THE STROKE OF THE ACCELERATOR LEVER
• 56. ADJUSTING PPC VALVE CLEARANCE
• 57. ADJUSTING THE SAFETY MICROSWITCH
• 58. MEASURING THE SWING CIRCLE AXIAL CLEARANCE
• 59. TESTING AND ADJUSTING TRACKSHOE TENSION
• 60. AIR BLEEDING FROM HYDRAULIC CIRCUITS
• 61. RELEASING RESIDUAL PRESSURE FROM THE CIRCUITS
• 62. CHECKING AND REGULATING PRESSURE IN THE HYDRAULIC CIRCUITS
• 63. TESTING AND SETTING OF MAIN VALVES
• 64. ADJUSTING PC VALVE
• 65. MEASURING LS DIFFERENTIAL PRESSURE AND ADJUSTING LS VALVE
• 66. CHECKING AND ADJUSTING PRESSURES IN THE SERVOCONTROL FEED UNIT
• 67. MEASURING PUMPS DELIVERY AND FLOW CONTROL STARTING POINT PUMP P1
• 68. MEASURING TRAVEL DEVIATION
• 69. ADJUSTING THE MAXIMUM SPEED OF THE TRAVEL MOTORS
• 70. MEASURING INNER OIL LEAKAGE OF TRAVEL MOTOR
• 71. ADJUSTING BOOM AND ARM SAFETY VALVES
• 72. ADJUSTING 2nd BOOM SAFETY VALVES
• 73. MEASURING AND SETTING OF PRESSURE SWITCH SIGNAL OVERLOAD OPERATION
• 74. MEASUREMENT OF INTERNAL OIL LEAKAGES IN THE SWING MOTOR
• 75. CHECKING FOR LEAKAGES INSIDE THE SWIVEL JOINT
• 76. ANALYSIS OF THE CAUSES OF HYDRAULIC DRIFTS
• 77. DISASSEMBLY AND ASSEMBLY
• 78. HOW TO READ THE MANUAL
• 79. PRECAUTIONS TO BE TAKEN WHEN WORKING
• 80. HYDRAULIC OIL TANK
• 81. ENGINEPUMP GROUP
• 82. PUMP GROUP
• 83. ENGINEPUMP COUPLING JOINT
• 84. MAIN PUMP INPUT SHAFT OIL SEAL
• 85. GEARPUMP
• 86. SWIVEL JOINT
• 87. SWING MOTOR
• 88. SWING MACHINERY
• 89. CONTROL VALVE
• 90. REVOLVING FRAME
• 91. COUNTERWEIGHT
• 92. SWING CIRCLE
• 93. TRACK SHOES
• 94. SPROCKET ASSEMBLY
• 95. TRAVEL GEARED MOTOR
• 96. ADJUSTING BALL BEARING PRELOAD
• 97. ADJUSTING AXIAL CLEARANCE ON TAPERED ROLLER BEARINGS
• 98. IDLER AND RECOIL SPRING ASSEMBLY
• 99. IDLER
• 100. RECOIL SPRING GROUP AND CYLINDER
• 101. TRACK ROLLER
• 102. CARRIER ROLLER
• 103. PPC VALVE (BOOMBUCKET)
• 104. PPC VALVE (ARMSWING)
• 105. BLADE PPC VALVE
• 106. TRAVEL PEDAL CONTROL
• 107. t BOOM SWING PEDAL CONTROL
• 108. BOOM CYLINDER (FOR 1PIECE BOOM)
• 109. BOOM CYLINDER (FOR 2PIECE BOOM)
• 110. d BOOM CYLINDERS
• 111. ARM CYLINDER
• 112. BUCKET CYLINDER
• 113. BOOM SWING CYLINDER
• 114. BLADE CYLINDER
• 115. WORK EQUIPMENT CYLINDERS
• 116. WORK EQUIPMENT (FOR 1PIECE BOOM)
• 117. WORK EQUIPMENT (FOR 2PIECE BOOM)
• 118. BUCKET
• 120. d BOOM
• 121. BOOM (FOR 1PIECE BOOM)
• 122. t BOOM
• 123. SWING BRACKET
• 124. BLADE
• 125. MAINTENANCE STANDARD
• 126. SWING MACHINERY
• 127. SERVOCONTROL FEED UNIT
• 128. TRAVEL PPC VALVE
• 129. PPC VALVE
• 130. BLADE SAFETY VALVE
• 131. CYLINDERS
• 132. WORK EQUIPMENT (1PIECE BOOM)
• 133. WORK EQUIPMENT (2PIECE BOOM)