Clean Ppc Circuit Strainer - Komatsu WA500-6H Operation & Maintenance Manual

4.9 Service procedure
Every 2000 hours service

Clean PPC circuit 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. Remove covers (1) at the accumulator mount on the right
side of the rear frame.
4. Remove outlet hose (2) of the PPC circuit strainer.
5. Remove cap (4) from strainer case (3), then take out strainer
(5).
6. Wash strainer (5) in clean diesel oil.
7. Install strainer (5) so that the covered end of strainer case
(3) is on the inside, then tighten cap (4).
8. Install outlet hose (2) of the PPC circuit strainer to cap (4).
9. Install covers (1) at the accumulator mount on the right side
of the rear frame.
10. Operate the bucket control lever to the TILT position and the
boom control lever to the FLOAT position. When the cylin-
der reaches the end of its stroke, hold it there for one
minute.
11. Operate the bucket control lever to the DUMP position and
the lift arm control lever to the RAISE position. When the
cylinder reaches the end of its stroke, hold it there for one
minute.
For details of the procedure for bleeding air from the hydrau-
lic circuit, please contact your KOMATSU distributor.
4-82
Maintenance
GK050262
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GK050263
5 3 4
GK050264
WA500-6H – VEAM430100
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