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Komatsu 6D125-2 Series Diesel Engine Shop Manual SMEE1250K0

$40.00

Type Of Manual: Shop Manual
Manual ID: SMEE1250K0
Format: PDF
Size: 9.6MB
Number of Pages: 257

Category: Komatsu Shop Manual PDF

Model List:
- 6D125-2 Series Diesel Engine

0.1. APPLICABLE MACHINE
0.2. SPECIFICATIONS
0.3. GENERAL ASSEMBLY DRAWING
0.4. ENGINE PERFORMANCE CURVE
0.5. WEIGHT TABLE
1. STRUCTURE AND FUNCTION
1.1. GENERAL STRUCTURE
1.2. INTAKE AND EXHAUST SYSTEM
1.2.1. INTAKE AND EXHAUST SYSTEM
1.2.2. MAIN CIRCULATION PART
1.2.3. TIMING GEAR
1.2.4. VALVE SYSTEM
1.2.5. FLYWHEEL AND FLYWHEEL HOUSING
1.3. LUBRICATION SYSTEM
1.3.1. LUBRICATION SYSTEM CHART
1.3.2. OIL PUMP
1.3.3. REGULATOR VALVE
1.3.4. OIL FILTER
1.3.5. BYPASS FILTER
1.3.6. OIL COOLER
1.4. FUEL SYSTEM
1.4.1. FUEL SYSTEM CHART
1.4.2. FUEL INJECTION PUMP
1.4.3. MAGNETIC SWITCH AND FUEL SOLENOID
1.4.4. BOOST COMPENSATOR
1.4.5. FUEL INJECTION NOZZLE
1.4.6. FUEL FILTER
1.5. COOLING SYSTEM
1.5.1. COOLING SYSTRM CHART
1.5.2. WATER PUMP
1.5.3. THERMOSTAT
1.5.4. CORROSION RESISTOR
1.5.5. FAN DRIVE
1.6. ELECTLICAL SYSTEM
1.6.1. ALTERNATOR
1.6.2. STARTING MOTOR
1.6.3. ELECTRICAL INTANKE AIR HEATER
1.7. ACCESSORY
1.7.1. AIR COMPRESSOR
2. TESTING AND ADJUSTING
2.1. ADJUSTING ENGINE SPEED SENSOR
2.2. ENGINE BODY
2.2.1. ADJUSTING VALVE CLEARANCE
2.2.2. MEASURUNG COMPRESSION PRESSURE
2.3. FUEL SYSTEM
2.3.1. TESTING AND ADJUSTING FUEL INJECTION TIMING
2.3.2. TESTING AND ADJUSTING FUEL CUT SOLENOID
2.3.3. ADJUSTING ENGINE STOP MOTOR LEVER
2.3.4. FUEL INJECTION PUMP CALIBRATION DATA
2.4. PERFORMANCE TEST
2.4.1. RUNIN STANDARD
2.4.2. PERFORANCE TEST CRITERIA
2.5. TROUBLESHOOTING
2.5.1. POINTS TO REMEMBER WHEN TROUBLESHOOTING
2.5.2. METHOD OF SING TROUBLESHOOTING CHART
2.5.3. S1 Starting performance is poor(Starting always takes time)
2.5.4. S2 Engine does not start
2.5.4.1. Engine does not turn
2.5.4.2. Engine turns but no exhaust gas comes out(Fuel is not being injected)
2.5.4.3. Exhaust gas comes out but engine does not start(Fuel is being injected)
2.5.5. S3 Engine does not pick up smoothly(Followup is poor)
2.5.6. S4 Engine stops during opertions
2.5.7. S5 Engine does not rotate smoothly(hunting)
2.5.8. S6 Engine lacks output(no power)
2.5.9. S7 Exhaust gas is black(incomplete combustion)
2.5.10. S8 Oil consumption is excessive(or exhaust gas is blue)
2.5.11. S9 Oil becomes contaminated quickly
2.5.12. S10 Fuel consumption excessive
2.5.13. S11 Oil is cooling water,or water spurts back,or water level goes down
2.5.14. S12 Oil pressure lamp lights up(drop in oil pressure)
2.5.15. S13 Oil level rises
2.5.16. S14 Water temperature becomes too hight(overheating)
2.5.17. S15 Abnormal noise is made
2.5.18. S16 Vibration is excessive
2.6. TESTING AND ADJUSTING TOOL LIST
2.7. TESTING AND ADJUSTING DATA
3. DISASSEMBLY AND ASSEMBLY
3.1. DISASSENBLY
3.1.1. SPECIAL TOOL LIST
3.1.2. Starting motor assembly
3.1.3. Engine oil cooler
3.1.4. Resetting to tool A1(overhaul stand)
3.1.6. Engine mounts
3.1.7. Air cleaner,bracket assembly
3.1.8. Turbocharger,exhaust manifold assembly
3.1.9. Corrosion resistor and piping,wiring
3.1.10. Engine oil filter
3.1.11. Lubrication valve
3.1.12. Fuel filter assembly
3.1.13. Fuel injection pipes
3.1.14. After cooler assembly
3.1.15. Fuel injection pump
3.1.16. Alternator assembly
3.1.17. Thermostat housing,water pump
3.1.18. Fan pulley,drive assembly
3.1.19. Front support
3.1.20. Crankshaft pulley,vibration damper
3.1.21. Air vent tube,spill pipe
3.1.22. Head covers
3.1.23. Nozzle holders
3.1.24. Rocker arms
3.1.25. Crossheads
3.1.26. Push rods
3.1.27. Rocker arm housings
3.1.28. Cylinder head assemblies
3.1.29. Oil pan
3.1.30. Flywheel
3.1.31. Rear seal
3.1.32. Flywheel housing
3.1.33. Front cover
3.1.34. Fuel injection pump drive gear
3.1.35. Cam follower covers
3.1.36. Cam followers
3.1.37. Camshaft
3.1.38. Oil pump
3.1.39. Idler gear
3.1.40. Oil suction pipe
3.1.41. Piston and connecting rod assembly
3.1.42. Crankshaft
3.1.43. Piston cooling nozzle
3.1.44. Cylinder liner
3.2. ASSEMBLY
3.2.1. Cylinder liner
3.2.2. Piston cooling nozzle
3.2.3. Crankshaft
3.2.4. Piston and connecting rod assembly
3.2.5. Oil suction pipe
3.2.6. Idler gear
3.2.7. Oil pump
3.2.8. Camshaft
3.2.9. Can followers
3.2.10. Cam follower covers
3.2.11. Drive gear of fuel injection pump
3.2.12. Fuel injection pump assembly
3.2.13. Adjusting fuel injection timing
3.2.14. Front cover
3.2.15. Crankshaft pulley,vibration damper
3.2.16. Flywheel housing
3.2.17. Rear seal
3.2.18. Flywheel
3.2.19. Oil pan
3.2.20. Cylinder head assemblies
3.2.21. Rocker arm housing
3.2.22. Push rods
3.2.23. Crossheads
3.2.24. Rocker arms
3.2.25. Adjusting valve clearance
3.2.26. Nozzle holders
3.2.27. Head covers
3.2.28. Spill pipe,air vent tube
3.2.29. Pulley,front support
3.2.30. Drive sensor,tubes,bracket
3.2.31. Water pump,thermostat housing
3.2.32. Alternator assembly
3.2.33. Adjusting Vbelts
3.2.34. Aftercooler assembly
3.2.35. Fuel injection pump pipng
3.2.36. Lubrication valve
3.2.37. Engine oil filter
3.2.38. Corrosion resistor
3.2.39. Turbocharger,exhaust manifoid assembly
3.2.40. Air cleaner
3.2.41. Engine mounts
3.2.43. Resetting engine in engine stand
3.2.44. Engine oil cooler assembly
3.2.45. Starting motor assembly
3.2.45.1. Refilling with oil
4. MAINTENAANCE STANDARD
4.1. INTAKE AND EXHAUST SYSTEM
4.1.1. TURBOCHARGER
4.2. ENGINE BODY
4.2.1. CYLINDER HEAD
4.2.2. VALVE AND VALVE GUIDE
4.2.3. ROCKER ARM SHAFT
4.2.4. CAM FOLLOWER AND PUSH ROD
4.2.5. TIMING GEAR
4.2.6. PISTION,PISTON RING AND PISTON PIN
4.2.7. CONNECTING ROD
4.2.8. VIBRATION DAMPER
4.2.9. FLYWHEEL AND FLYWHEEL HOUSING
4.3. COOLING SYSTEM
4.3.1. WATER PUMP AND THERMOSTAT
4.3.2. OIL COOLER
4.4. LUBRICATION SYSTEM
4.4.1. OIL PUMP
4.4.2. MAIN RELIEF VALVE
4.4.3. REGULATOR VALVE AND SAFETY VALVE
4.5. ACCESSORY
4.5.1. AIR COMPRESSOR
5. REPAIR AND REPLACEMENT OF PARTS
5.1. REPLACING VALVE SEAT INSERTS
5.2. REPLACING NOZZLE HOLDER SLEEVE
5.3. REPLACING VALVE GUIDE
5.4. REPLACING CROSS HEAD GUIDE
5.5. GRINDING THE VALVE
5.6. GRINDING THE FITTING FACE OF CYLINDER HEAD
5.7. REPLACING CAM BUSING
5.8. REPLACING CAM GEAR
5.9. REPLACING FLYWHEEL RING GEAR
5.10. PRESSURE TEST
5.11. REPLACTING ENGINE REAR SEAL
5.12. REPLACING CONNECTING ROD SMALL END BUSHING
5.13. REPLACING MAIN BEARING CAP
5.14. GRINDING CRANKSHAFT
5.15. REPLACING WEAR SLEEVE

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