Komatsu PW118MR-11 Operation & Maintenance Manual page 398

MAINTENANCE PROCEDURE
1)
Keep the work equipment at the maximum distance,
turn the starting switch to OFF (A), and stop the en-
gine.
2)
Turn the starting switch to ON position (B).
3)
Set the lock lever to FREE position (F).
4)
Slowly set the work equipment control lever in LOW-
ER direction and check that the work equipment
touches the ground.
If the work equipment goes down under its own 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.
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MAINTENANCE