Komatsu PC118MR-8, Operation And Maintenance Manual

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MAINTENANCE
MAINTENANCE PROCEDURES
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5. With the safety device lever in FREE position (F), activate
the working tool control lever and check that the tool is
lowered to the ground.
6. If the tool descends because of its own weight and touches
the ground, the accumulator is correct.

If the tool does not descend or stops at the middle of the
course, the accumulator pressure is not enough.

Refer to your Komatsu distributor for check operations.
7. When the check is completed, take the safety device lever
back to the LOCK position (L) and turn the start-up key to
OFF.
Method to release the pressure in the hydraulic circuit
NOTICE
To fully activate the working tools control lever forwards, backwards, to the right and left within 15
seconds after the engine stops, proceed as follows.

When the engine stops, the accumulator pressure gradually descends and, therefore, the pressure can be
released only immediately after the engine stops.
1. Rest the working tool on the ground. Close the crusher
jaws, etc.
2. Stop the engine.
3. Turn the starter key to ON.
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