Komatsu ecot3 Operation And Maintenance Manual page 343

MAINTENANCE PROCEDURE
CHECKING FUNCTION OF ACCUMULATOR
When carrying out the inspection, check first that there is no person or obstacle in the surrounding area.
Check the nitrogen gas charge pressure as follows.
1. Stop the machine on firm, level ground.
2. Hold the work equipment in the maximum reach posture (arm
fully out, bucket fully dumped) at a height (A) 1.5 m (4 ft 11 in)
from the ground.
Carry out Steps 3 to 5 within 15 seconds.
When the engine is stopped, the pressure in the accumulator gradually goes down. For this reason, the check can
only be carried out immediately after the engine is stopped.
3. Keep the work equipment at the maximum reach, turn the
starting switch to OFF position (A), and stop the engine.
4. Turn the starting switch to ON position (B).
4 - 80
CAUTION
MAINTENANCE