Komatsu PC118MR-8, Руководство по эксплуатации и обслуживанию

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MAINTENANCE
MAINTENANCE PROCEDURES
4-87
MAINTENANCE EVERY 4000 HOURS OF OPERATION 4
Carry out simultaneously with the maintenance operations scheduled every 100; 250; 500; 1000 and 2000 hours.
CHECKING THE WATER PUMP 4
Make sure that the slack in the pulley is not excessive, that the drain hole is not clogged, and check for oil or water
leakages. If there is any anomaly, contact your Komatsu distributor, who will provide for the necessary repairs or
changes.
ACCUMULATOR REPLACEMENT (FOR CONTROL CIRCUIT) 4
Replace the accumulator every 2 years or 4000 hours, based on the situations checked before.
WARNING
q
The accumulator is loaded with high pressure nitrogen; therefore, an incorrect operation may cause
an explosion with consequent serious injuries or damage. When handling the accumulator, always
proceed as indicated below.
q
Hydraulic circuit pressure cannot be completely eliminated. When the hydraulic equipment is
removed, do not stand in the oil jet outlet direction. Moreover, loosen the bolts slowly during this
operation.
q
Do not remove the accumulator;
q
Do not bring it near flame or dispose of it in fire.
q
Do not make holes in it or weld it.
q
Do not hit it, roll it, or subject it to any impact.
q
When disposing of the accumulator, the gas must be released. Refer to Komatsu distributor to have
this operation carried out.
If the operations continues when the performance of the
accumulator is not enough, it will be impossible to release the
remaining pressure in the hydraulic circuit in case of machine
failure. Contact your Koma tsu distr ibutor to have th e
accumulator replaced.
The accumulator is fitted in the position illustrated in the
drawing.
WEAM014802