Komatsu PW98MR-10 Operation & Maintenance Manual page 377

MAINTENANCE
4)
Slowly the work equipment control lever in LOWER di-
rection and check that the work equipment touches
the ground.
If the work equipment goes down under its weight and contacts
the ground, the accumulators are normal.
If the work equipment does not go down or stops in midway,
the charged pressure of the gas in the accumulators for the hy-
draulic circuit has probably dropped. Ask your Komatsu distrib-
utor for inspection.
This completes the inspection. After completion of the inspection, set the lock lever to LOCK position and turn
the starting switch to OFF position.
Method for releasing pressure in hydraulic circuit
1.
Lower the work equipment to the ground.
REMARK
Close the crusher attachment jaws, etc.
2.
Set the lock lever to LOCK position (L).
3.
Perform the following procedure within 15 seconds.
REMARK
After the engine stops, the accumulators pressure de-
creases gradually. You can check only just after the engine
stops.
WENAM00061
MAINTENANCE PROCEDURE
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