komatsu pc80 3 pc80lc 3 hydraulic excavator shop manual sebm020x0302 1

komatsu pc80 3 pc80lc 3 hydraulic excavator shop manual sebm020x0302 2

komatsu pc80 3 pc80lc 3 hydraulic excavator shop manual sebm020x0302 3

komatsu pc80 3 pc80lc 3 hydraulic excavator shop manual sebm020x0302 4

komatsu pc80 3 pc80lc 3 hydraulic excavator shop manual sebm020x0302 5

Komatsu PC80-3, PC80LC-3 Hydraulic Excavator Shop Manual SEBM020X0302

$40.00

Type Of Manual: Shop Manual
Manual ID: SEBM020X0302
Format: PDF
Size: 22.7MB
Number of Pages: 386

Category: Komatsu Shop Manual PDF

Model List:
- PC80-3 Hydraulic Excavator
- PC80LC-3 Hydraulic Excavator

1. COVER
2. CONTENTS
3. ENGINE
3.1. STRUCTURE AND FUNCTION
3.1.1. ENGINE MOUNT
3.1.2. RADIATOR
3.1.4. FUEL TANK AND PIPING
3.1.5. ENGINE CONTROL
3.1.6. AUTODECELERATION SYSTEM (IF EQUIPPED)
3.2. TESTING AND ADJUSTING
3.2.1. STANDARD FOR TESTING AND ADJUSTING
3.2.2. TESTING AND ADJUSTING TOOL LIST
3.2.3. ADJUSTING VALVE CLEARANCE
3.2.4. MEASURING EXHAUST GAS COLOR
3.2.5. MEASURING COMPRESSION PRESSURE
3.2.6. MEASURING BLOWBY PRESSURE
3.2.7. ADJUSTING FUEL INJECTION TIMING
3.2.8. TESTING AND ADJUSTING FAN BELT TENSION
3.2.9. ADJUSTING FUEL CONTROL LEVER
3.2.10. ADJUSTING AUTODECELERATION SYSTEM
3.3. DISASSEMBLY AND ASSEMBLY
3.3.1. AUTODECELERATION CYLINDER
3.3.2. ENGINE OIL COOLER
3.3.2.1. REMOVAL
3.3.2.2. INSTALLATION
3.3.3. FAN AND FAN PULLEY
3.3.3.1. REMOVAL
3.3.3.2. INSTALLATION
3.3.4. HYDRAULIC OIL COOLER
3.3.4.1. REMOVAL
3.3.4.2. INSTALLATION
3.3.5. RADIATOR AND HYDRAULIC OIL COOLER
3.4. STRUCTURE AND FUNCTION
3.4.1. POWER TRAIN
3.4.2. TRAVEL SYSTEM
3.4.3. TRAVEL CONTROL CIRCUIT SCHEMATICS
3.4.4. TRAVEL CONTROL CIRCUIT
3.4.5. TRAVEL MOTOR (WITH REDUCTION GEAR AND PARKING BRAKE)
3.4.6. CENTER SWIVEL JOINT
3.4.7. STRAIGHT TRAVEL SYSTEM
3.4.8. TRAVEL CONTROL
3.4.9. SWING SYSTEM
3.4.10. SWING CONTROL CIRCUIT SCHEMATICS
3.4.11. SWING CONTROL CIRCUIT
3.4.12. SWING MOTOR AND BRAKE VALVE
3.4.13. SWING MECHANICAL BRAKE (IF EQUIPPED)
3.4.14. SWING PRIORITY CIRCUIT
3.4.15. SWING MACHINERY
3.4.16. SWING CIRCLE
3.5. DISASSEMBLY AND ASSEMBLY
3.5.1. CENTER SWIVEL JOINT
3.5.2. SWING MACHINERY
3.6. MAINTENANCE STANDARD
3.6.1. SWING MACHINERY
3.6.2. SWING CIRCLE
3.6.3. SWING MOTOR
3.6.4. SPROCKET
4. UNDERCARRIAGE
4.1. STRUCTURE AND FUNCTION
4.2. DISASSEMBLY AND ASSEMBLY
4.3. MAINTENANCE STANDARD
4.3.1. TRACK FRAME AND RECOIL SPRING
4.3.2. IDLER
4.3.3. TRACK ROLLER
4.3.4. CARRIER ROLLER
4.3.5. TRACK SHOE
5. HYDRAULIC SYSTEM
5.1. STRUCTURE AND FUNCTION
5.1.1. OUTLINE
5.1.2. HYDRAULIC PIPING
5.1.3. HYDRAULIC SCHEMATICS
5.1.4. HYDRAULIC CIRCUIT
5.1.5. HYDRAULIC TANK (WITH FUEL TANK)
5.1.6. HYDRAULIC PUMP
5.1.7. PC CONTROL SYSTEM
5.1.8. MODE SELECTION TYPE PC CONTROL SYSTEM (IF EQUIPPED)
5.1.9. OLSS SYSTEM (IF EQUIPPED)
5.1.10. CONTROL VALVE
5.1.11. HYDRAULIC CYLINDER
5.1.12. WORK EQUIPPENT CONTROL
5.1.13. WORK EQUIPPENT
5.2. TESTING AND ADJUSTING
5.2.1. TABLE OF JUDGEMENT STANDARD VALUE
5.2.2. TROUBLESHOOTING TOOLS
5.2.3. TESTING AND ADJUSTING MAIN RELIEF VALVE
5.2.4. TESTING AND ADJUSTING CHARGING PUMP RELIEF VALVE
5.2.5. TESTING CONTROL CIRCUIT PRESSURE
5.2.6. MEASURING DELIVERY OF PISTON PUMP
5.2.7. AIR BLEEDING
5.2.8. CHECKING FOR OIL LEAKAGE FROM SWIVEL JOINT
5.2.9. TROUBLESHOOTING
5.2.9.1. ELECTRICAL CIRCUIT
5.2.9.2. PISTON OF CONNECTORS FOR TROUBLESHOOTING
5.2.9.3. CONNECTION TABLE FOR CONNECTOR PINS
5.2.9.4. TROUBLESHOOTING PROCEDURE
5.2.9.5. CHECKS BEFORE TROUBLESHOOTING
5.2.9.6. JUDGEMENT TABLE
5.2.9.7. TROUBLESHOOTING CHART
5.2.9.7.1. E1 WORK EQUIPMENT, SWING, TRAVEL SPEEDS EXTREMELY SLOW, OR LACK OF POWER. NO CHANGE IN OUTPUT WHEN MODE SELECTOR SWITCH IS OPERATED.
5.2.9.7.2. E2 MACHINE DEVIATES EXCESSIVELY (DURING COMPOUND OPERATIONS)
5.2.9.7.3. E2 MACHINE DEVIATES EXCESSIVELY (DURING COMPOUND OPERATIONS). MACHINE DEVIATES EXCESSIVELY (WHEN STARTING).
5.2.9.7.4. E3 HYDRAULIC DRIFT OF SWING IS EXCESSIVE, OR UPPER STRUCTURE DOES NOT SWING.
5.2.9.7.5. E4 AUTODECELERATION DOES NOT WORK.
5.2.9.7.6. H1 MACHINE DEVIATES EXCESSIVELY (DEVIATES MORE THAN STANDARD WHEN ONLY TRAVEL SYSTEM IS USED, TRAVEL LEVER IS PULLED FULLY).
5.2.9.7.7. H1 MACHINE DEVIATES EXCESSIVELY (DEVIATES MORE THAN STANDARD WHEN ONLY TRAVEL SYSTEM IS USED, TRAVEL LEVER AT FULL TRAVEL).
5.2.9.7.8. H2 MACHINE DEVIATES EXCESSIVELY DURING COMPOUND OPERATION.
5.2.9.7.9. H3 MACHINE DEVIATES EXCESSIVELY WHEN STARTING.
5.2.9.7.10. H4 CONTROL LEVERS ARE EXTREMELY HEAVY.
5.2.9.7.11. H5 WORK EQUIPMENT, TRAVEL AND SWING START SUDDENLY DURING FINE CONTROL OPERATIONS.
5.2.9.7.12. H6 SPEEDS FOR WORK EQUIPMENT, SWING, AND TRAVEL ARE ALL EXTREMELY SLOW, OR THERE IS NO POWER.
5.2.9.7.13. H6 SPEEDS FOR WORK EQUIPMENT, SWING, AND TRAVEL ARE ALL EXTREMELY SLOW, OR THERE IS NO POWER (NO ABNORMALITY IN AUTODECELERATION).
5.2.9.7.14. H7 SPEEDS FOR BOOM, ARM AND BUCKET ARE SLOW, OR THERE IS NO POWER (NO ABNORMALITY IN AUTODECELERATION)
5.2.9.7.15. H8 ENGINE STALLS OR ENGINE SPEED DROPS DURING OPERATIONS.
5.2.9.7.16. H9 NO CHANGE IN OUTPUT WHEN MODE SELECTOR SWITCH IS OPERATED.
5.2.9.7.17. H10 AUTODECELERATION DOES NOT COME ON, OR DOES NOT GO OFF.
5.2.9.7.18. H11 ABNORMAL NOISE COMES FROM AROUND PUMP.
5.2.9.7.19. H12 SWING SPEED IS SLOW, OR OVERRUN WHEN STOPPING SWING IS EXCESSIVE.
5.2.9.7.20. H13 UPPER STRUCTURE DOES NOT SWING.
5.2.9.7.21. H14 EXCESSIVE HYDRAULIC DRIFT OF SWING
5.2.9.7.22. H15 EXCESSIVE HYDRAULIC DRIFT OF WORK EQUIPMENT
5.2.9.7.23. H16 EXCESSIVE TIME LAG FOR WORK EQUIPMENT
5.2.9.8. FAILURE MODE AND COMPONENTS
5.3. DISASSEMBLY AND ASSEMBLY
5.3.0.1. REMOVAL (WITH OLSS)
5.3.0.2. INSTALLATION (WITH OLSS)
5.3.0.3. DISASSEMBLY
5.3.0.4. ASSEMBLY
5.3.1. TVC VALVE AND FRONT CONC VALVE
5.3.1.1. REMOVAL
5.3.1.2. INSTALLATION
5.3.2. REAR CONC VALVE
5.3.3. MAIN PUMP INPUT SHAFT OIL SEAL
5.3.3.1. REMOVAL
5.3.3.2. INSTALLATION
5.3.4. SPOOL CONTROL VALVE
5.3.4.1. REMOVAL
5.3.4.2. INSTALLATION
5.3.5. SPOOL CONTROL VALVE
5.3.6. BUCKET CYLINDER
5.3.6.1. REMOVAL
5.3.6.2. INSTALLATION
5.3.7. HYDRAULIC CYLINDER
5.3.7.1. DISASSEMBLY
5.3.7.2. ASSEMBLY
5.4. MAINTENANCE STANDARD
5.4.1. CHARGING PUMP (BAR16)
5.4.2. SPOOL CONTROL VALVE
5.4.3. SPOOL CONTROL VALVE
5.4.4. HYDRAULIC CYLINDER
5.4.5. WORK EQUIPMENT
6. WORK EQUIPMENT
6.1. DISASSEMBLY AND ASSEMBLY
7. ELECTRIC AND ELECTRONIC SYSTEM
7.1. STRUCTURE AND FUNCTION
7.1.1. ELECTRICAL SYSTEM
7.1.2. ELECTRICAL CIRCUIT DIAGRAM
7.2. TESTING AND ADJUSTING
7.2.1. ECECTRICAL CIRCUIT
7.2.2. TROUBLESHOOTING CHART
7.2.2.1. M1 BATTERY CHARGING PILOT LAMP DOES NOT GO OFF.
7.2.2.2. M2 FUEL GAUGE DOES NOT DISPLAY OR DISPLAYS ABNORMALLY.
7.2.2.3. M3 WATER TEMPERATURE GAUGE DOES NOT OPERATE OR DISPLAYS ABNORMALLY.

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