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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.
If inspection is carried out when the body pilot lamp is lighted up and the shift indicator shows "F1", there is danger that the
internal parts of the transmission may be damaged.
Before carrying out inspection, lower the dump body securely and check that the body pilot lamp has gone out, then place the
gear shift lever at the "D" position and check that the shift indicator shows "F2".
Check the braking capacity of the retarder brake as follows.
1.
Stop the machine on flat ground and pull retarder control 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.
NOTICE
If the dump body is not seated and the parking brake is at "TRAVEL", the speed range is set to F1, even when the gear shift lever
is at the "D" position.
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.
If inspection is carried out when the body pilot lamp is lighted up and the shift indicator shows "F1", there is danger that the
internal parts of the transmission may be damaged.
Before carrying out inspection, lower the dump body securely and check that the body pilot lamp has gone out, then place the
gear shift lever at the "D" position and check that the shift indicator shows "F2".
Check the braking capacity of the parking brake as follows.
1. Stop the machine on flat ground and set parking brake switch
(1) to PARKING.
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.
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