Komatsu PC45MR-30403, Operation And Maintenance Manual

Page: 403 / 475

METHOD FOR CHECKING FUNCTION OF ACCUMULATOR
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CAUTION
Be sure that no person or obstacle is around the machine before performing the inspection.
1.
Start the engine.
2.
Set the lock lever to FREE position (F).
Be sure to operate the lock lever by the operating portion
on the top.
3.
Place the machine on a firm, level ground.
4.
Set the work equipment to the posture shown in the figure
according to the following procedure.
1) Operate the work equipment control levers, and re-
tract arm cylinder and bucket cylinder to their stroke
end (maximum reach posture of arm and bucket).
2) Operate the boom swing control pedal to swing the
boom to the center position.
3) Operate the work equipment control lever, and raise
the work equipment to height (a) of 1.5 m and hold
there.
5.
Set the lock lever to LOCK position (L).
Be sure to operate the lock lever by the operating portion
on the top.
6.
Check the nitrogen gas charge pressure in accumulator within 15 seconds according to the following proce-
dure.
When the engine is stopped, the pressure inside the accumulator gradually goes down, so this inspection
can be performed only immediately after the engine is stopped.
1) Turn the starting switch to OFF position (A) to stop the
engine.
Hold the work equipment in the maximum reach pos-
ture (arm fully out, bucket fully dumped).
MAINTENANCE PROCEDURE MAINTENANCE
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