Komatsu PC210-10 DEMOLITION BASE SPEC., Operation & Maintenance Manual

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MAINTENANCE MAINTENANCE SCHEDULE TABLE
4–69
6. If the work equipment goes down under its weight and con-
tacts 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
hydraulic circuit has probably dropped.
Ask your Komatsu distributor for inspection.
7. This completes the inspection. After completion of the
inspection, set the lock lever to the LOCK position and turn
the starting switch to the OFF position.
METHOD OF RELEASING PRESSURE IN HYDRAULIC CIRCUIT
METHOD OF RELEASING PRESSURE IN HYDRAULIC CIRCUIT:PC-C000-22AP00A
1. Lower the work equipment to the ground. Close the crusher
attachment jaws, etc.
2. Move the work equipment lock lever to the LOCK position.
3. Insert the lock pin for the attachment control pedal in posi-
tion (c) where it is possible to operate the pedal.
(if equipped)
Carry out Steps 4 to 6 within 15 seconds.
When the engine is stopped, the pressure in the accumulator
gradually goes down. For this reason, the release can only be
carried out immediately after the engine is stopped.
4. Stop the engine.
5. Turn the starting switch to the ON position (B).