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MAINTENANCE
SERVICE PROCEDURE
CHECKING FUNCTION OF ACCUMULATOR
For details of handling the accumulator, see Section "ACCUMULATOR (PAGE 2-35)".
ACCUMULATOR FOR TRAVEL DAMPER
When the travel damper switch is ON, the hydraulic spring effect of the accumulator absorbs the up-and-down
motion of the machine during travel and reduces the swaying.
Drive the machine and compare the up-and-down movement of the machine during travel when the travel damper
switch is ON and when it is OFF.
If there is no change in the up-and-down movement of the machine, the gas pressure in the accumulator has
probably dropped.
Please contact your Komatsu distributor to have the accumulator inspected.
REMARK
Carry out the inspection when the machine is traveling at a speed of at least 10 km/h (6.2 MPH). Even if the travel
damper switch is ON, the travel damper is not actuated if the travel speed is less than 10 km/h (6.2 MPH).
ACCUMULATOR FOR BRAKE DAMPER
When the brake pedal is depressed, the hydraulic spring effect of the accumulator actuates the brake smoothly.
If any change is felt in the smoothness of the brake operation during daily operations, the gas pressure in the
accumulator has probably dropped.
Please contact your Komatsu distributor to have the accumulator inspected.
REMARK
Even if there is any change in the smoothness, there is no drop in the braking force or brake performance.
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