Komatsu HM400-5, Operation & Maintenance Manual

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3) Use sight gauge (G) to check if there is oil re-
maining in the brake oil tank.
If there is no oil in the tank, stop the engine.
When the engine is stopped, the oil level rises
and oil is automatically supplied to the brake oil
tank.
• If the brake oil pressure caution lamp lights up while
air is being bled from the center slack adjuster, per-
form the following procedure.
1) Tighten bleeder screw (1).
2) Use sight gauge (G) to check if there is oil remaining in the brake oil tank.
If there is no oil in the tank, stop the engine.
When the engine is stopped, the oil level rises and oil is automatically supplied to the brake oil
tank.
7.
Keep depressing the brake pedal and check that no bubble comes out through the vinyl hose.
8.
Next, pull the retarder control lever and hold it.
9.
Loosen bleeder screw (1) approximately 3/4 turns.
Oil containing air is discharged.
Keep pulling the retarder control lever. When no bubble is
discharged through the vinyl hose, all air is bled.
10. Tighten bleeder screw (1) securely.
11. Install the cap to bleeder screw (1).
12. Bleed air from bleeder screw (1) on the opposite side ac-
cording to steps 1. to 11.
Next, bleed air from the wheel brake.
METHOD FOR BLEEDING AIR FROM WHEEL BRAKE
1.
Remove the cap of bleeder screw (2).
Front
Center
MAINTENANCE PROCEDURE MAINTENANCE
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