Komatsu WA480-8, Руководство по эксплуатации и техническому обслуживанию

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10. Extend and retract each of the steering, bucket, and boom
cylinders to the stroke end 3 to 4 times.
11. Stop the engine, then loosen air bleeding plug (7).
12. After bleeding air from the hydraulic tank, tighten plug (7).
13. Bleed air while running the engine at low idle.
14. Check the hydraulic oil level oil level.
Check that the hydraulic oil is at the specified level. For
details, see “METHOD FOR CHECKING OIL LEVEL IN
HYDRAULIC TANK, ADDING OIL (4-42)”.
15. Increase the engine speed and bleed air according to step
9.
Repeat this work until no air is discharged from plug (7).
16. After bleeding air, tighten plug (7).
Tightening torque: 11.3±1.5 Nm {1.15±0.15 kgm}
17. Check the hydraulic oil level.
Check that the hydraulic oil is at the specified level. For details, see “METHOD FOR CHECKING OIL LEV-
EL IN HYDRAULIC TANK, ADDING OIL (4-42)”.
18. Check the filter cover mount for oil leakage.
19. Install cover (1).
METHOD FOR REPLACING HYDRAULIC TANK BREATHER ELEMENT
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WARNING
• Immediately after the engine is stopped, its parts and oil are still very hot and may cause burn in-
jury. Wait for the temperature to go down, and then start the work.
• When removing the oil filler cap, the oil may spout out. Turn it slowly to release the internal pres-
sure, then remove it carefully.
1.
Before removing the breather, wipe off dirt and dusts
around it.
2.
Loosen the bolts and remove the cover.
3.
Remove the cap of oil filler port (F).
4.
Remove snap ring (2) of breather (1), remove breather cap
(3), and replace filter element (4) with a new one.
5.
Install breather cap (3) and snap ring (2).
6.
Close the cap of oil filler port (F).
MAINTENANCE MAINTENANCE PROCEDURE
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