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MAINTENANCE
SERVICE PROCEDURE
CHECK BRAKING CAPACITY OF RETARDER BRAKE
WARNING
If the machine moves, it will lead to serious injury or death. If machine begins to move during the inspection of braking capacity,
lower the engine speed immediately, set gear shift lever at N position, and then depress the foot brake.
Check the braking capacity of the retarder brake as follows.
1.
Set the air pressure to the maximum with the machine on flat
ground, and pull retarder lever (1) fully.
2.
Set shift lever (2) to the D position, gradually raise the engine
speed. If the machine does not move even when the engine
speed reaches 1200 rpm, it is normal.
3.
Lower the engine speed, set gear shift lever at N position. If
any problem is found, ask your Komatsu distributor for repair.
CHECK BRAKING CAPACITY OF PARKING BRAKE
WARNING
If the machine moves, it will lead to serious injury or death. If machine begins to move during the inspection of braking capacity,
lower the engine speed immediately, set gear shift lever at N position, and then depress the foot brake.
Check the braking capacity of the parking brake as follows.
1.
Set the air pressure to the maximum with the machine on flat
ground, and set parking brake valve lever (1) to the PARKING
position.
2.
Set shift lever (2) to the D position, gradually raise the engine
speed. If the machine does not move even when the engine
speed reaches 1200 rpm, it is normal.
3.
Lower the engine speed, set gear shift lever at N position. If
any problem is found, ask your Komatsu distributor for repair.
CHECK WEAR OF PARKING BRAKE PADS
WARNING
Never put any oil or grease on the surface of the pad or disc.
Measure the thickness of the pad, and if it is less than 1.5 mm (0.06
in), contact your Komatsu distributor.
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