11.
Tighten filter cap (1).
Tightening torque: 20 to 25 Nm {2.0 to 2.5 kgm}
EVERY 4000 HOURS MAINTENANCE
Maintenance for every 50, 250, 500, 1000 and 2000 hours service should be performed at the same time.
REPLACE DEFINED LIFE PARTS
Material quality of these parts can change as time passes and they are likely to wear out or deteriorate.
Replace them every 2 years or every 4000 hours, whichever comes sooner.
DEFINED LIFE PARTS LIST
No.
Parts for periodic replacement Replacement interval
1 Fuel system Fuel hose
Spill hose
Ask your Komatsu distributor
for replacement.
2
Engine lubrication system Turbocharger lubrication hose
Engine oil filter hose
3 Work equipment hydraulic
system
Main pump delivery hose
Pump delivery hose
Pump branch hose
Main pump LS hose
Hydraulic drive fan hose (Intake fan)
Swing line hose
Main suction hose
External work equipment hose
• Boom foot connection hose
• Boom cylinder hose
• Arm connection hose
• Arm cylinder hose
• Bucket cylinder hose
• Line hose for additional attachment
4 Others PPC accumulator
Accumulator for additional attachment
METHOD FOR CHECKING WATER PUMP
Check for leakage of water and oil around the water pump. If any problem is found, ask your Komatsu distributor
to perform disassembly, repair, or replacement.
METHOD FOR CHECKING STARTING MOTOR
Ask your Komatsu distributor to have the starting motor checked.
If the engine is started frequently, have this inspection performed every 1000 hours.
MAINTENANCE MAINTENANCE PROCEDURE
4-75
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