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MAINTENANCE
SERVICE PROCEDURE
EVERY 4000 HOURS SERVICE
Maintenance for every 250, 500, 1000 and 2000 hours service should be carried out at the same time.
REPLACE ACCUMULATOR (FOR CONTROL CIRCUIT)
Replace the accumulator every 2 years or every 4000 hours, whichever comes sooner.
WARNING
The accumulator is charged with high-pressure nitrogen gas, so mistaken operation may cause an explosion, which will lead to
serious injury or damage. When handling the accumulator, always do as follows.
The pressure in the hydraulic circuit cannot be completely removed. When removing the hydraulic equipment, do not stand
in the direction that the oil spurts out when carrying out the operation. In addition, loosen the bolts slowly when carrying out
the operation.
Do not disassemble the accumulator.
Do not bring it near flame or dispose of it in fire.
Do not make holes in it or weld it.
Do not hit it, roll it, or subject it to any impact.
When disposing of the accumulator, the gas must be released. Please contact your Komatsu distributor to have this work
carried out.
If operations are continued after the performance of the
accumulator has dropped, it will be impossible to release the
remaining pressure in the hydraulic circuit if there should be a
failure on the machine. Please ask your Komatsu distributor to
replace the accumulator.
The accumulator is installed to the position shown in the diagram
on the right.
CHECK PLAY OF TURBOCHARGER ROTOR
Contact your Komatsu distributor to have the rotor play checked.
CHECK ENGINE VALVE CLEARANCE, ADJUST
Special tools are needed for inspection and maintenance, so contact your Komatsu distributor.
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