Komatsu 125-2 Series Diesel Engine Service Repair Manual

Engine : 6D125-2;
D53A-17 D53P-17 D58E-1 D58P-1
D65E-12 D70LE-12
D85A-21 D85A-21B D85A-21D D85A-21S
D85P-21 D85C-21
D85E-SS-2 D85E-SS-2A
D87E-2 D87P-2 LW250-5 CS210-1
FD250-2 FD400-2 EG220BS-2 DCA-220SSK

Engine: S6D125-2;
D60P-12 D65P-12 D65EX-12 D65PX-12
D75S-5

Engine: SA6D125-2;
PC400-6C PC400LC-6
HD255-5
WA470-3 WA450-3 (USA)
BR500JG-1 FD 430-2 EG300BS-5
DCA300BS-5 DCA-300SPK J6D125E-G1-2

Engine: SAA6D125-2;
PC400-6 PC450-6 PC400AC-6
BR550JG-1 SAA6D125-P400

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Manual Contents:

01 GENERAL
APPLICABLE MACHINE
SPECIFICATIONS
GENERAL ASSEMBLY DRAWING
ENGINE PERFORMANCE CURVE
WEIGHT TABLE

11 STRUCTURE AND FUNCTION
GENERAL STRUCTURE
INTAKE AND EXHAUST SYSTEM
ENGINE BODY
LUBRICATION SYSTEM
FUEL SYSTEM
COOLING SYSTEM
ELECTRICAL SYSTEM
ACCESSORY

12 TESTING AND ADJUSTING
ADJUSTING ENGINE SPEED SENSOR
ENGINE BODY
FUEL SYSTEM
PERFORMANCE TEST
TROUBLESHOOTING
TESTING AND ADJUSTING TOOL LIST
TESTING AND ADJUSTING DATA

13 DISASSEMBLY AND ASSEMBLY
DISASSEMBLY
ASSEMBLY

14 MAINTENANCE STANDARD
TURBOCHARGER
CYLINDER HEAD
VALVE AND VALVE GUIDE
ROCKER ARM SHAFT
CROSSHEAD
CYLINDER BLOCK
CYLINDER LINER
CRANKSHAFT
CAMSHAFT
CAM FOLLOWER AND PUSH ROD
TIMING GEAR
PISTON PISTON RING AN PISTON PIN
CONNECTING ROD
VIBRATION DAMPER
FLYWHEEL AND FLYWHEEL HOUSING
WATER PUMP AND THERMOSTAT
OIL COOLER
OIL PUMP
MAIN RELIEF VALVE
REGULATOR VALVE AND SAFETY VALVE
AIR COMPRESSOR

15 REPAIR AND REPLACEMENT OF PARTS
REPLACING VALVE SEAT INSERTS
REPLACING NOZZLE HOLDER SLEEVE
REPLACING VALVE GUIDE
REPLACING CROSS HEAD GUIDE
GRINDING THE VALVE
GRINDING OF FITTING FACE OF CYLINDER HEAD
REPLACING CAM BUSHING
REPLACING CAM GEAR
REPLACING FLYWHEEL RING GEAR
PRESSURE TEST
REPLACING ENGINE REAR SEAL
REPLACING CONNECTING ROD SMALL END BUSHING
REPLACING MAIN BEARING CAP
GRINDING CRANKSHAFT
REPLACING WEAR SLEEVE (WHEN EQUIPPED WITH SLEEVE)