.
MAINTENANCE
MAINTENANCE PROCEDURE
EVERY 4000 HOURS MAINTENANCE
Carry out the EVERY 100 HOURS MAINTENANCE, EVERY 250 HOURS MAINTENANCE, EVERY 500 HOURS
MAINTENANCE, EVERY 1000 HOURS MAINTENANCE, and EVERY 2000 HOURS MAINTENANCE at the same
time.
CHECK WATER PUMP
Check that there is no play in the pulley, leakage of oil or water, or clogging of the drain hole. If any problem is found,
please contact your Komatsu distributor for repairs or replacement.
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.
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