Komatsu PC138US-11 Operation & Maintenance Manual page 382

MAINTENANCE PROCEDURE
2.
Hold the work equipment in the maximum reach posture
(arm fully out, bucket fully dumped) at height 1.5 m from
the ground.
3.
Perform the following procedure within 15 seconds.
REMARK
After the engine stops, the accumulator pressure decrea-
ses gradually. You can check only just after the engine
stops.
1)
Keep the work equipment at the maximum reach pos-
ture, turn the starting switch to OFF position (A), and
stop the engine.
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 accumulator is normal.
If the work equipment does not go down or stops in midway,
the charged pressure of the gas in the accumulator 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.
4-66
WENAM00111
MAINTENANCE