Komatsu Galeo HD325-6, Operation & Maintenance Manual

Page: 213 / 317

.
MAINTENANCE
SERVICE PROCEDURE
BLEED AIR FROM FRONT BRAKE
WARNING
Stop the machine on level ground and put blocks under the wheels before bleeding the air.
1. Start the engine and raise the pressure to the maximum position in the green range on the air pressure gauge.
2. Fill oil reservoir (1) with oil.
3. Remove the cap of bleeder screw (2), insert a vinyl hose
(inside diameter: 8 mm (0.31 in)), then loosen the bleeder
screw approx. 3/4 turns and depress the brake pedal slowly.
After tightening the bleeder screw, release the brake pedal.
Repeat this procedure until no more bubbles come out from the
vinyl hose.
Do not keep the brake pedal depressed continuously. Depress it each time slowly to bleed the air.
After bleeding the air, tighten bleeder screw (2) securely and fit the cap.
4. After completion of the air bleeding procedure, fill the oil reservoir to the specified level (MAX).
Repeat the same procedure on the left and right sides.
When bleeding the air from the front brakes and rear brakes at the same time, bleed the air from the rear brakes
first.
4 - 32