Komatsu WA70-7, Руководство по эксплуатации и обслуживанию

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5.8 Maintenance procedure
Maintenance Maintenance every 1000 service hours
WA70-7 – VENAM02003
5-63
Hydraulic system – change filter insert
WARNING

Repeated skin contact with used hydraulic oil can cause skin
damage and other bodily harm!

Wear rubber gloves when changing the filter. Carefully wash
off hydraulic oil that has come into contact with the skin.

Use only the prescribed supporting prop to support the work
unit. Never use other objects as supports.
1. Park the machine on level, solid ground.
2. Raise the boom and tilt the bucket.
3. Apply the parking brake.
WARNING
Danger of injury caused by boom! It is only permitted to step into
the area below the boom if the boom is supported.
4. Position the supporting prop underneath the boom.
5. With the engine switched off, lower the boom slowly until it
rests safely on the supporting prop.
6. Loosen the venting filter (1) a few turns to let the pressure
escape.
7. Clean the filter cap (2) and the surrounding area.
8. Remove the filter cap.
9. Pull out the filter insert (3) at the handle (4).
10. Pull the filter insert off its handle and discard it.
11. Clean the inside of the filter. Check for foreign materials
before cleaning.
12. Attach the handle to a new filter insert.
13. Insert the new filter element into the housing.
14. Screw on the filter cap and tighten to 20 Nm.
15. Tighten the venting filter (1).
16. Start the engine.
17. Actuate the boom and bucket several times.
18. Check the hydraulic oil level.
19. Do a trial run to check that the system is leak-free.
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