HYDRAULIC EXCAVATOR PC1250-7 PC1250SP-7 PC1250LC-7 Shop Manual

COVER
CONTENTS
LIST OF REVISED PAGES
SAFETY
SAFETY NOTICE
FOREWORD
GENERAL
HOW TO READ THE SHOP MANUAL
HOISTING INSTRUCTIONS
METHOD OF DISASSEMBLING, CONNECTING PUSH-PULL TYPE COUPLER
COATING MATERIALS
STANDARD TIGHTENING TORQUE
ELECTRIC WIRE CODE
CONVERSION TABLE
UNITS
01 GENERAL
SPECIFICATION DIMENSION DRAWINGS
SPECIFICATIONS
WEIGHT TABLE
FUEL, COOLANT AND LUBRICANTS
10 STRUCTURE, FUNCTION AND MAINTENANCE STANDARD
PTO
PTO LUBRICATION SYSTEM
RADIATOR, OIL COOLER, AFTERCOOLER AND FUEL COOLER
POWER TRAIN
SWING MACHINERY
SWING CIRCLE
FINAL DRIVE
SPROCKET
TRACK FRAME
IDLER
CARRIER ROLLER
TRACK ROLLER
TRACK SHOE
AIR PIPING DIAGRAM
AIR CIRCUIT DIAGRAM
AIR GOVERNOR
AIR TANK
SAFETY VALVE
HORN VALVE
GREASE PUMP
HYDRAULIC EQUIPMENT LAYOUT DRAWING
HYDRAULIC TANK
HYDRAULIC PUMP
NO. 1 PUMP
NO. 2 PUMP
NO. 3 PUMP
LINE OIL FILTER
PILOT OIL FILTER
RETURN OIL FILTER
DRAIN OIL FILTER
L.H. 5-SPOOL CONTROL VALVE
R.H. 4-SPOOL CONTROL VALVE
SWING 4-SPOOL CONTROL VALVE
STRAIGHT-TRAVEL VALVE
SWING MOTOR
CENTER SWIVEL JOINT
TRAVEL MOTOR
PPC CONTROL RELIEF VALVE
ACCUMULATOR
VALVE CONTROL
WORK EQUIPMENT, SWING PPC VALVE
TRAVEL PPC VALVE
SOLENOID VALVE
HYDRAULIC CYLINDER
WORK EQUIPMENT
DIMENSIONS OF WORK EQUIPMENT
AIR CONDITIONER
ENGINE CONTROL
HPI ENGINE CONTROL SYSTEM
MACHINE CONTROL SYSTEM
MONITOR SYSTEM
SENSOR
20 TESTING AND ADJUSTING
STANDARD VALUE TABLE FOR ENGINE RELATED PARTS
STANDARD VALUE TABLE FOR CHASSIS RELATED PARTS
TESTING AND ADJUSTING
TROUBLESHOOTING
30 DISASSEMBLY AND ASSEMBLY
HOW TO READ THIS MANUAL
PRECAUTIONS WHEN PERFORMING OPERATION
SPECIAL TOOL LIST
REMOVAL AND INSTALLATION OF FUEL PUMP ASSEMBLY
REMOVAL AND INSTALLATION OF ENGINE FRONT SEAL
REMOVAL AND INSTALLATION OF ENGINE REAR SEAL
REMOVAL AND INSTALLATION OF CYLINDER HEAD ASSEMBLY
REMOVAL AND INSTALLATION OF FUEL COOLER AND AIR CONDITIONER ASSEMBLY
REMOVAL AND INSTALLATION OF AFTERCOOLER ASSEMBLY
REMOVAL AND INSTALLATION OF RADIATOR, HYDRAULIC COOLER ASSEMBLY
REMOVAL AND INSTALLATION OF ENGINE, PTO, HYDRAULIC PUMP ASSEMBLY
REMOVAL AND INSTALLATION OF PTO ASSEMBLY
DISASSEMBLY AND ASSEMBLY OF PTO ASSEMBLY
REMOVAL AND INSTALLATION OF FUEL TANK ASSEMBLY
DISASSEMBLY AND ASSEMBLY OF FINAL DRIVE ASSEMBLY
REMOVAL AND INSTALLATION OF REVOLVING FRAME ASSEMBLY
REMOVAL AND INSTALLATION OF SWING MACHINERY ASSEMBLY
DISASSEMBLY AND ASSEMBLY OF SWING MACHINERY ASSEMBLY
REMOVAL AND INSTALLATION OF SWING CIRCLE ASSEMBLY
REMOVAL AND INSTALLATION OF TRACK SHOE ASSEMBLY
REMOVAL AND INSTALLATION OF IDLER ASSEMBLY
DISASSEMBLY AND ASSEMBLY OF IDLER ASSEMBLY
DISASSEMBLY AND ASSEMBLY OF IDLER ADJUSTMENT CYLINDER ASSEMBLY
REMOVAL AND INSTALLATION OF RECOIL SPRING ASSEMBLY
DISASSEMBLY AND ASSEMBLY OF RECOIL SPRING ASSEMBLY
REMOVAL AND INSTALLATION OF CARRIER ROLLER ASSEMBLY
DISASSEMBLY AND ASSEMBLY OF CARRIER ROLLER ASSEMBLY
REMOVAL AND INSTALLATION OF TRACK ROLLER ASSEMBLY
DISASSEMBLY AND ASSEMBLY OF TRACK ROLLER ASSEMBLY
REMOVAL AND INSTALLATION OF HYDRAULIC TANK ASSEMBLY
REMOVAL AND INSTALLATION OF HYDRAULIC PUMP ASSEMBLY
REMOVAL AND INSTALLATION OF MAIN PUMP INPUT SHAFT OIL SEAL
DISASSEMBLY AND ASSEMBLY OF MAIN RELIEF VALVE ASSEMBLY
REMOVAL AND INSTALLATION OF 5-SPOOL CONTROL VALVE ASSEMBLY (NO. 1)
REMOVAL AND INSTALLATION OF 4-SPOOL CONTROL VALVE ASSEMBLY (NO. 2)
REMOVAL AND INSTALLATION OF 4-SPOOL CONTROL VALVE ASSEMBLY (NO. 3)
DISASSEMBLY AND ASSEMBLY OF CONTROL VALVE ASSEMBLY (NO. 1)
DISASSEMBLY AND ASSEMBLY OF CONTROL VALVE ASSEMBLY (NO. 2)
DISASSEMBLY AND ASSEMBLY OF CONTROL VALVE ASSEMBLY (NO. 3)
REMOVAL AND INSTALLATION OF SWING MOTOR ASSEMBLY
REMOVAL AND INSTALLATION OF CENTER SWIVEL JOINT ASSEMBLY
DISASSEMBLY AND ASSEMBLY OF CENTER SWIVEL JOINT ASSEMBLY
REMOVAL AND INSTALLATIONOF TRAVEL MOTOR ASSEMBLY
DISASSEMBLY AND ASSEMBLY OF WORK EQUIPMENT PPC VALVE ASSEMBLY
DISASSEMBLY AND ASSEMBLY OF TRAVEL PPC VALVE ASSEMBLY
REMOVAL AND INSTALLATION OF BUCKET CYLINDER ASSEMBLY
REMOVAL AND INSTALLATION OF BUCKET CYLINDER ASSEMBLY (LOADING SHOVEL)
REMOVAL AND INSTALLATION OF BOTTOM DUMP CYLINDER ASSEMBLY (LOADING SHOVEL)
REMOVAL AND INSTALLATION OF ARM CYLINDER ASSEMBLY (BACKHOE SPECIFICATION)
REMOVAL AND INSTALLATION OF ARM CYLINDER ASSEMBLY (LOADING SHOVEL)
REMOVAL AND INSTALLATION OF BOOM CYLINDER ASSEMBLY (BACKHOE SPECIFICATION)
REMOVAL AND INSTALLATION OF BOOM CYLINDER ASSEMBLY (LOADING SHOVEL)
DISASSEMBLY AND ASSEMBLY OF HYDRAULIC CYLINDER ASSEMBLY (BACKHOE SPECIFICATION)
REMOVAL AND INSTALLATION OF BUCKET ASSEMBLY (BACKHOE SPECIFICATION)
REMOVAL AND INSTALLATION OF BUCKET ASSEMBLY (LOADING SHOVEL)
REMOVAL AND INSTALLATION OF ARM ASSEMBLY (BACKHOE SPECIFICATION)
REMOVAL AND INSTALLATION OF ARM ASSEMBLY (LOADING SHOVEL)
REMOVAL AND INSTALLATION OF BOOM ASSEMBLY (BACKHOE SPECIFICATION)
REMOVAL AND INSTALLATION OF BOOM ASSEMBLY (LOADING SHOVEL)
REMOVAL AND INSTALLATION OF OPERATOR’S CAB ASSEMBLY
REMOVAL AND INSTALLATION OF OPERATOR’S CAB GLASS (STUCK GLASS)
REMOVAL AND INSTALLATION OF FRONT WINDOW ASSEMBLY
REMOVAL AND INSTALLATION OF COUNTERWEIGHT ASSEMBLY
REMOVAL AND INSTALLATION OF RECEIVER TANKASSEMBLY
REMOVAL AND INSTALLATION OF AIR CONDITIONER COMPRESSOR ASSEMBLY
REMOVAL AND INSTALLATION OF VHMS CONTROLLER
90 OTHERS
HYDRAULIC CIRCUIT DIAGRAM (1/3)
HYDRAULIC CIRCUIT DIAGRAM (2/3)
HYDRAULIC CIRCUIT DIAGRAM (3/3)
ELECTRICAL CIRCUIT DIAGRAM (1/7)
ELECTRICAL CIRCUIT DIAGRAM (2/7)
ELECTRICAL CIRCUIT DIAGRAM (3/7)
ELECTRICAL CIRCUIT DIAGRAM (4/7)
ELECTRICAL CIRCUIT DIAGRAM (5/7)
ELECTRICAL CIRCUIT DIAGRAM (6/7)
ELECTRICAL CIRCUIT DIAGRAM (7/7)