Komatsu Excavator PC1250-7 PC1250SP-7 PC1250LC-7 service & repair manual

Description Komatsu Excavator PC1250-7 PC1250SP-7 PC1250LC-7 service & repair manual

Komatsu Hydraulic Excavator PC1250-7, PC1250SP-7, PC1250LC-7 pdf workshop service repair manual + operation & maintenance manual

Serial numbers:
20001 and up

Specifications, testing, troubleshooting, maintenance, technical documentation, electrical diagrams, hydraulic schematics, adjusting, assembly, disassembly, removal, installation instructions and other information

MANUAL CONTENT:
GENERAL
Specification dimension drawings
Specifications
Weight table
Fuel, coolant and lubricants

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

TESTING AND ADJUSTING
TOOLS FOR TESTING, ADJUSTING AND TROUBLESHOOTING
MEASURING ENGINE SPEED
MEASURING AIR SUPPLY PRESSURE (BOOST PRESSURE)
MEASURING EXHAUST TEMPERATURE
TROUBLESHOOTING FOR INJECTOR
MEASURING EXHAUST COLOR
ADJUSTING VALVE CLEARANCE
ADJUSTING INJECTOR SET LOAD
MEASURING COMPRESSION PRESSURE
MEASURING BLOW-BY PRESSURE
MEASURING ENGINE OIL PRESSURE
HANDLING EQUIPMENT IN FUEL SYSTEM
MEASURING FUEL CIRCUIT PRESSURE
VISUAL INSPECTION OF RETURN FUEL
ARRANGEMENT OF CONTROL DEVICES FOR HPI
BLEEDING AIR FROM FUEL CIRCUIT
ADJUSTING ENGINE SPEED SENSOR
REPLACING AND ADJUSTING FAN BELT
TESTING AND ADJUSTING ALTERNATOR AND AIR COMPRESSOR BELT TENSION
TESTING CLEARANCE OF SWING CIRCLE BEARING
MEASURING WEAR OF SPROCKET
TESTING AND ADJUSTING TRACK SHOE TENSION
TESTING AND ADJUSTING HYDRAULIC PRESSURE IN WORK EQUIPMENT, SWING, TRAVEL CIRCUIT
TESTING AND ADJUSTING CONTROL CIRCUIT OIL PRESSURE
TESTING AND ADJUSTING PISTON PUMP CONTROL PRESSURE
TESTING SERVO PISTON STROKE
MEASURING PPC VALVE OUTPUT PRESSURE AND TESTINGS WING PPC SHUTTLE VALVE
MEASURING SOLENOID VALVE OUTPUT PRESSURE
ADJUSTING WORK EQUIPMENT, SWING PPC VALVE
TESTING TRAVEL DEVIATION
TESTING LOCATIONS CAUSING HYDRAULIC DRIFT OF WORK EQUIPMENT
MEASURING OIL LEAKAGE
MEASURING FAN SPEED
MEASURING FAN CIRCUIT OIL PRESSURE
BLEEDING AIR
RELEASING REMAINING PRESSURE IN HYDRAULIC CIRCUIT
INSPECTION PROCEDURES FOR DIODE
SPECIAL FUNCTION OF MONITOR PANEL
INITIALIZATION PROCEDURES FOR VHMS CONTROLLER
SETTING PROCEDURES FOR REPLACING VHMS CONTROLLER
TESTING AND ADJUSTING DEVICES RELATED TO VHMS
PM-CLINIC SERVICE

TROUBLESHOOTING
POINTS TO REMEMBER WHEN TROUBLESHOOTING
SEQUENCE OF EVENTS IN TROUBLESHOOTING
POINTS TO REMEMBER WHEN CARRYING OUT MAINTENANCE
CHECKS BEFORE TROUBLESHOOTING
CLASSIFICATION AND STEPS FOR TROUBLESHOOTING
CONNECTOR ALLOCATION DRAWING AND ELECTRICAL CIRCUIT DIAGRAM FOR EACH SYSTEM
CONNECTION TABLE FOR CONNECTOR PIN NUMBERS
T-BRANCH BOX AND T-BRANCH TABLE
TROUBLESHOOTING WHEN ERROR CODE (ELECTRICAL SYSTEM) AND FAILURE CODE (MECHANICAL SYSTEM) ARE DISPLAYED
TROUBLESHOOTING OF ELECTRICAL SYSTEM (E-MODE)
TROUBLESHOOTING OF HYDRAULIC, MECHANICAL SYSTEM (H MODE)
TROUBLESHOOTING OF ENGINE BODY (S MODE)

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

OTHERS
Hydraulic circuit diagram
Electrical circuit diagram

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