Komatsu WA500-6H, Operation & Maintenance Manual

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4.9 Service procedure
Every 2000 hours service
Maintenance
4-78
WA500-6H – VEAM430100
22. After completing the air bleed operation, tighten plug (1).
Tightening torque:
11.3 ± 1.5 N·m (1.15 ± 0.15 kgf·m, 8.3 ± 1.1 lbft)
23. Check that the hydraulic oil is at the standard level.
For details, see "Check oil level in hydraulic tank, add oil
(4-53)".
24. Check that there is no leakage of oil from the filter cover
mount.
Clean hydraulic tank strainer
When changing the oil in the hydraulic tank, drain the oil from
the tank and clean the strainer.
1. Lower the bucket horizontally to the ground and turn the
parking brake switch ON.
2. Stop the engine and wait for the temperature at all parts to
go down.
3. Loosen bolt (1), then remove strainer cover (2).
4. Remove strainer (5) together with rod (3) and spring (4).
5. Remove any dirt stuck to strainer (5), then wash it in clean
diesel oil or flushing oil. If strainer (5) is damaged, replace it
with a new part.
6. Install rod (3), spring (4), and strainer (5).
7. Install cover (2).
When doing this, look through the mounting hole in the cover
(2) and check that the guide pin of the strainer is fitted into
the guide hole.
GK050257
1 2
3
4
5