Komatsu PW75R-2 Hydraulic Excavator Shop Manual WEBM001601

Description

• Model List:
  • PW75R-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. FRONT AXLE
• 17. TRANSMISSION (2WS)
• 18. REAR AXLE
• 19. STEERING SYSTEM (2WS)
• 20. TRANSMISSION (4WS)
• 21. REAR AXLE (4WS)
• 22. STEERING SYSTEM (4WS)
• 23. STEERING UNIT
• 24. SWING CIRCLE
• 25. SWING MACHINERY
• 26. HYDRAULIC CIRCUIT (2WS)
• 27. HYDRAULIC CIRCUIT (4WS)
• 28. HYDRAULIC CIRCUIT (LOWER EQUIPMENT)
• 29. HYDRAULIC PUMP
• 30. MAIN HYDRAULIC PUMP
• 31. PC VALVE, LS VALVE, SERVO PISTON
• 32. LS VALVE
• 33. PC VALVE (POWER CONTROL)
• 34. DISPLACEMENT AUTOMATIC CONTROL HIGH PRESSURE RELATED
• 35. TRAVEL MOTOR BRAKE VALVES
• 36. CYLINDERS
• 37. SERVOCONTROL FEED UNIT
• 38. ACCUMULATORS
• 39. PPC VALVE
• 40. PPC VALVE (BLADE, BOOM SWING, 2PIECE BOOM)
• 41. TRAVEL PPC VALVE
• 42. BRAKE PUMP
• 43. BOOM AND ARM SAFETY VALVE
• 44. PIECE BOOM SAFETY VALVE
• 45. BLADE OR OUTRIGGER SAFETY VALVE
• 46. OVER LOAD SENSOR SWITCH
• 47. SOLENOID VALVE GROUP ST1 (Y5Y6Y7Y11)
• 48. SOLENOID VALVE GROUP ST2 (Y4Y10Y12)
• 49. SOLENOID VALVE GROUP ST3 (Y1Y2)
• 50. SOLENOID VALVE GROUP OP1 (Y21Y22Y23Y24)
• 51. SOLENOID VALVE GROUP OP2 (Y26)
• 52. SOLENOID VALVE GROUP OP3 (Y8Y9)
• 53. ELECTRICAL DIAGRAM (2WS) (1/5)
• 54. ELECTRICAL DIAGRAM (2WS) (2/5)
• 55. ELECTRICAL DIAGRAM (2WS) (3/5)
• 56. ELECTRICAL DIAGRAM (2WS) (4/5)
• 57. ELECTRICAL DIAGRAM (2WS) (5/5)
• 58. ELECTRICAL DIAGRAM (4WS) (1/5)
• 59. ELECTRICAL DIAGRAM (4WS) (2/5)
• 60. ELECTRICAL DIAGRAM (4WS) (3/5)
• 61. ELECTRICAL DIAGRAM (4WS) (4/5)
• 62. ELECTRICAL DIAGRAM (4WS) (5/5)
• 63. TESTING AND ADJUSTMENTS
• 64. NORMAL OR STANDARD TECHNICAL DATA
• 65. SPECIAL TOOLS
• 66. MEASURING THE ENGINE SPEED
• 67. ADJUSTING VALVE CLEARANCE
• 68. MEASURING COMPRESSION PRESSURE
• 69. TESTING AND ADJUSTING FUEL INJECTION TIMING
• 70. TESTING AND ADJUSTING FAN BEL TENSION
• 71. ADJUSTING THE STROKE OF THE ACCELERATOR LEVER
• 72. ADJUSTING PPC VALVES CLEARANCE
• 73. ADJUSTING THE SAFETY MICROSWITCH
• 74. MEASURING THE SWING CIRCLE AXIAL CLEARANCE
• 75. AIR BLEEDING FROM HYDRAULIC CIRCUITS
• 76. RELEASING RESIDUAL PRESSURE
• 77. CHECKING AND REGULATING PRESSURE IN THE HYDRAULIC CIRCUITS
• 78. TESTING AND SETTING OF MAIN VALVES
• 79. ADJUSTING PC VALVE
• 80. MEASURING LS DIFFERENTIAL PRESSURE AND ADJUSTING LS VALVE
• 81. CHECKING AND ADJUSTING PRESSURES IN THE SERVOCONTROL FEED UNIT
• 82. MEASURING PUMPS DELIVERY AND FLOW CONTROL STARTING POINT PUMP P1
• 83. CHECKING THAT THE PRIORITY VALVE IS FUNCTIONING CORRECTLY
• 84. CHECKING AND REGULATING THE PRESSURE OF THE STEERING SYSTEM
• 85. CHECKING LEAKAGES IN THE STEERING CYLINDERS
• 86. CHECKING THE BRAKING SYSTEM
• 87. CHECKING WEAR IN THE BRAKE DISKS
• 88. ADJUSTING BRAKING DISKS CLEARANCE
• 89. BLEEDING AIR FROM THE BRAKE LINES
• 90. ADJUSTING THE PARKING BRAKE
• 91. TRAVEL HYDRAULIC EQUIPMENT CHECKING PROCEDURE
• 92. CHECKING AND ADJUSTING THE AUTOMATIC DISPLACEMENT CONTROL SYSTEM OF THE TRAVEL MOTOR
• 93. CHECKING FOR LEAKAGES IN THE TRAVEL MOTOR
• 94. CHECKING AND ADJUSTING THE SPEED OF THE TRAVEL PROPELLER SHAFT
• 95. ADJUSTMENT OF THE SPEED SURVEYOR
• 96. ADJUSTING BOOM AND ARM SAFETY VALVES
• 97. ADJUSTING 2nd BOOM SAFETY VALVES
• 98. MEASURING AND SETTING OF PRESSURE SWITCH SIGNAL OVERLOAD OPERATION
• 99. MEASUREMENT OF INTERNAL OIL LEAKAGES IN THE SWING MOTOR
• 100. CHECKING FOR LEAKAGES INSIDE THE SWIVEL JOINT
• 101. ANALYSIS OF THE CAUSES OF HYDRAULIC DRIFTS
• 102. DISASSEMBLY AND ASSEMBLY
• 103. HOW TO READ THE MANUAL
• 104. PRECAUTIONS TO BE TAKEN WHEN WORKING
• 105. HYDRAULIC OIL TANK
• 106. ENGINEPUMP GROUP
• 107. PUMP GROUP
• 108. ENGINEPUMP COUPLING JOINT
• 109. MAIN PUMP INPUT SHAFT OIL SEAL
• 110. GEARPUMP
• 111. SWIVEL JOINT
• 112. SWING MOTOR
• 113. SWING GEARED MOTOR
• 114. SWING MACHINERY ASSEMBLY
• 115. CONTROL VALVE
• 116. REVOLVING FRAME
• 117. COUNTERWEIGHT
• 118. SWING CIRCLE
• 119. TRANSMISSION REVERSER, DIRECTION INDICATOR AND HEADLIGHT DIPPER BEAM CONTROL GROUP
• 120. PPC VALVE (BOOM BUCKET)
• 121. PPC VALVE (ARMSWING)
• 122. OUTRIGGER AND BLADE PPC VALVE
• 123. BOOM SWING PPC VALVE
• 124. TRAVEL AND 2nd BOOM PPC VALVE
• 125. AXLE LOCKING CYLINDERS
• 126. COMPLETE FRONT AXLE
• 127. COMPLETE REAR AXLE
• 128. AXLES
• 129. BOOM CYLINDER (FOR 1PIECE BOOM)
• 130. BOOM CYLINDER (FOR 2PIECE BOOM)
• 131. d BOOM CYLINDERS
• 132. ARM CYLINDER
• 133. BUCKET CYLINDER
• 134. BOOM SWING CYLINDER
• 135. CYLINDERS FOR OUTRIGGERS OR BLADE
• 136. WORK EQUIPMENT CYLINDERS
• 137. WORK EQUIPMENT (FOR 1PIECE BOOM)
• 138. WORK EQUIPMENT (FOR 2PIECE BOOM)
• 139. BLADE AND OUTRIGGERS
• 140. BLADE AND OUTRIGGERS ARMS
• 141. MAINTENANCE STANDARD
• 143. FRONT AXLE
• 144. TRANSMISSION (2WS)
• 145. REAR AXLE (2WS)
• 146. TRANSMISSION (4WS)
• 147. REAR AXLE (4WS)
• 148. SWING CIRCLE
• 149. SWING MACHINERY
• 150. TRAVEL MOTOR BRAKE VALVES
• 151. SERVOCONTROL FEED UNIT
• 152. TRAVEL PPC VALVE
• 153. PPC VALVE
• 154. BLADE SAFETY VALVE
• 155. CYLINDERS
• 156. WORK EQUIPMENT (1PIECE BOOM)
• 157. WORK EQUIPMENT (2PIECE BOOM)