Komatsu WA800-3E0, Руководство по эксплуатации и техническому обслуживанию

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MAINTENANCE
SERVICE PROCEDURE
4-35
BLEEDING AIR FROM BRAKE HYDRAULIC CIRCUIT 4
CAUTION
When adding oil to the brake oil tank, always use the recommended oil given in “USE OF FUEL, COOLANT
AND LUBRICANTS ACCORDING TO AMBIENT TEMPERATURE (4-12)“.
After removing the piping of brake hydraulic circuit,bleed the air from inside of the circuit as follows:
1. After assembling the piping,be sure to check that the connectors are not loose.
2. Put blocks under the wheels.
3. Check that the brake oil level is within the sight gauge on
the side of the brake oil tank.
q
While the engine is stopped, the oil must be at level (A)
(10 hours or more after the engine is stopped).
q
While the engine is running, the oil must be at level (B)
(5 minutes or more after the engine is started).
4. Stop the engine.
5. Remove the air bleeder cap from the brake housing and
insert one end of a vinyl hose in the brake housing and put
the other end in a container.
6. Depress the brake pedal and loosen bleeder screw (1) to
bleed air. After tightening bleeder screw (1), release the
brake pedal slowly.
q
This work are to be performed by two persons. One
depresses the brake pedal, and the other bleeds air
through the bleeder screw (1).
q
Use the left-hand brake pedal.
q
Supply brake oil periodically to keep the level suffi-
ciently high.
7. Repeat this operation until air bubbles stop coming out of
the hose. Then, depress the pedal to the end and tighten
bleeder screw (1) while the oil is flowing out.
NOTICE
Bleed the air at all 4 locations. After bleeding the air, check the oil level in the brake oil tank.
For details, contact your Komatsu distributor.
Upper
sight
gauge
Lower
sight
gauge