Komatsu PC75R-2 (ITA) Shop Manual PDF WEBM001501

Data Size: 9.88 MB 
File Type: PDF 
Language: English 
Manufacturer: Komatsu 
Applicable Machine: Excavator 
Document: Shop Manual, Electric and Hydraulic Diagrams 
Machine Model: Komatsu PC75R-2 (ITA) Excavator 
Serial Number: 226200783 and up 
Book Number: WEBM001501 
Page: 364 Pages

List Contents:

LIST OF REVISED PAGES 
SAFETY 
FOREWORD 
HOW TO READ THE SHOP MANUAL 
HOISTING INSTRUCTIONS 
STANDARD TIGHTENING TORQUE 
COATING MATERIALS 
ELECTRIC WIRE CODE 
WEIGHT TABLE 
TABLE OF OIL AND COOLANT QUANTITIES 
10.STRUCTURE AND FUNCTION 
P.T.O. 
POWER TRAIN 
TRACK FRAME 
IDLER AND RECOIL SPRING 
CARRIER ROLLER TRACK ROLLER 
TRACK SHOE 
SWING CIRCLE 
SWING MACHINERY 
HYDRAULIC CIRCUIT DIAGRAM (STANDARD) 
HYDRAULIC CIRCUIT DIAGRAM (2-PIECE BOOM) 
HYDRAULIC PUMP 
MAIN HYDRAULIC PUMP 
PC VALVE, LS VALVE, SERVO PISTON 
LS VALVE 
PC VALVE (POWER CONTROL) 
9-SPOOL CONTROL VALVE (STANDARD) 
10-SPOOL CONTROL VALVE (STANDARD + 2-PIECE BOOM) 
SWING MOTOR 
CENTER SWIVEL JOINT 
TRAVEL MOTOR 
PARKING BRAKE 
BRAKE VALVE 
TRAVEL MOTOR 
REDUCTION GEAR 
CYLINDERS 
SERVOCONTROL FEED UNIT 
ACCUMULATOR 
PPC VALVE 
PPC VALVE (BLADE, BOOM SWING, 2-PIECE BOOM) 
TRAVEL PPC VALVE 
BOOM AND ARM SAFETY VALVE 
BLADE SAFETY VALVE 
2-PIECE BOOM SAFETY VALVE 
OVERLOAD SENSOR SWITCH 
SOLENOID VALVE SOLENOID VALVE GROUP ST1 
SOLENOID VALVE GROUP OP1 (Y3-Y4) 
ELECTRICAL DIAGRAM (1/3) 
ELECTRICAL DIAGRAM (2/3) 
ELECTRICAL DIAGRAM (3/3) 
20.TESTING AND ADJUSTMENTS 
NORMAL OR STANDARD TECHNICAL DATA 
EQUIPMENT FOR TESTING, ADJUSTING, AND IDENTIFYING FRAULTS 
MEASURING THE ENGINE SPEED 
ADJUSTING VALVE CLEARANCE 
MEASURING COMPRESSION PRESSURE 
TESTING AND ADJUSTING FUEL INJECTION TIMING 
TESTING AND ADJUSTING FAN BEL TENSION 
ADJUSTING THE STROKE OF THE ACCELERATOR LEVER 
ADJUSTING PPC VALVE CLEARANCE 
ADJUSTING THE SAFETY MICROSWITCH 
MEASURING THE SWING CIRCLE AXIAL CLEARANCE 
TESTING AND ADJUSTING TRACK-SHOE TENSION 
AIR BLEEDING FROM HYDRAULIC CIRCUITS 
RELEASING RESIDUAL PRESSURE FROM THE CIRCUITS 
CHECKING AND REGULATING PRESSURE IN THE HYDRAULIC CIRCUITS 
TESTING AND SETTING OF MAIN VALVES 
ADJUSTING PC VALVE 
MEASURING LS DIFFERENTIAL PRESSURE AND ADJUSTING LS VALVE 
CHECKING AND ADJUSTING PRESSURES IN THE SERVOCONTROL FEED UNIT 
MEASURING PUMPS DELIVERY AND FLOW CONTROL STARTING POINT PUMP P1 
MEASURING TRAVEL DEVIATION 
ADJUSTING THE MAXIMUM SPEED OF THE TRAVEL MOTORS 
MEASURING INNER OIL LEAKAGE OF TRAVEL MOTOR 
ADJUSTING BOOM AND ARM SAFETY VALVES 
ADJUSTING 2nd BOOM SAFETY VALVES 
MEASURING AND SETTING OF PRESSURE SWITCH SIGNAL OVERLOAD OPERATION 
MEASUREMENT OF INTERNAL OIL LEAKAGES IN THE SWING MOTOR 
CHECKING FOR LEAKAGES INSIDE THE SWIVEL JOINT 
ANALYSIS OF THE CAUSES OF HYDRAULIC DRIFTS 
30.DISASSEMBLY AND ASSEMBLY 
HOW TO READ THE MANUAL 
PRECAUTIONS TO BE TAKEN WHEN WORKING 
SPECIAL TOOLS 
STARTER MOTOR 
ALTERNATOR 
INJECTION PUMP 
NOZZLE HOLDER 
CYLINDER HEAD 
SEAT 
CABIN 
ENGINE HOOD 
FRONT HOOD 
HEATING FAN 
RADIATOR 
FUEL TANK 
HYDRAULIC OIL TANK 
ENGINE-PUMP GROUP 
PUMP GROUP 
ENGINE-PUMP COUPLING JOINT 
MAIN PUMP INPUT SHAFT OIL SEAL 
GEAR-PUMP 
SWIVEL JOINT 
SWING MOTOR 
SWING MACHINERY 
CONTROL VALVE 
REVOLVING FRAME 
COUNTERWEIGHT 
SWING CIRCLE 
TRACK SHOES 
SPROCKET ASSEMBLY 
TRAVEL GEARED MOTOR 
ADJUSTING BALL BEARING PRELOAD 
ADJUSTING AXIAL CLEARANCE ON TAPERED ROLLER BEARINGS 
IDLER AND RECOIL SPRING ASSEMBLY 
IDLER 
RECOIL SPRING GROUP AND CYLINDER 
TRACK ROLLER 
CARRIER ROLLER 
R.H. PPC VALVE (BOOM-BUCKET) 
L.H. PPC VALVE (ARM-SWING) 
BLADE PPC VALVE 
TRAVEL PEDAL CONTROL 
1st BOOM SWING PEDAL CONTROL 
BOOM CYLINDER (FOR 1-PIECE BOOM) 
BOOM CYLINDER (FOR 2-PIECE BOOM) 
2nd BOOM CYLINDERS 
ARM CYLINDER 
BUCKET CYLINDER 
BOOM SWING CYLINDER 
BLADE CYLINDER 
WORK EQUIPMENT CYLINDERS 
WORK EQUIPMENT (FOR 1-PIECE BOOM) 
WORK EQUIPMENT (FOR 2-PIECE BOOM) 
BUCKET 
ARM 
2nd BOOM 
BOOM (FOR 1-PIECE BOOM) 
1st BOOM 
SWING BRACKET 
BLADE 
40.MAINTENANCE STANDARD 
P.T.O. 
SWING CIRCLE 
TRACK FRAME 
IDLER 
CARRIER ROLLER 
TRACK ROLLER 
TRACK SHOE 
SPROCKET 
SWING MACHINERY 
HYDRAULIC PUMP 
CONTROL VALVE 
SWING MOTOR 
SWIVEL JOINT 
TRAVEL MOTOR 
SERVOCONTROL FEED UNIT 
TRAVEL PPC VALVE 
PPC VALVE 
BLADE SAFETY VALVE 
CYLINDERS 
WORK EQUIPMENT (1-PIECE BOOM) 
WORK EQUIPMENT (2-PIECE BOOM)