Komatsu PC200-8M0 Shop Manual page 147

402 Hydraulic system, Part 2
Control valve
1. Pressure compensation valve (arm OUT)
2. Pressure compensation valve (R.H. travel
REVERSE)
3. Pressure compensation valve (swing RIGHT)
4. Pressure compensation valve (boom RAISE)
5. Pressure compensation valve (L.H. travel
REVERSE)
6. Pressure compensation valve (bucket DUMP)
7. Pressure compensation valve (service)
8. Pressure compensation valve (bucket CURL)
9. Pressure compensation valve (L.H. travel
FORWARD)
10. Pressure compensation valve (boom LOWER)
11. Pressure compensation valve (swing LEFT)
No. Check item
24 Spool return spring
25 Spool return spring
26 Spool return spring
27 Spool return spring
PC200, 200LC, 220, 220LC-8M0
Standard dimension
Free length x
Installed
Outside diame-
length
ter
55.2 x 34.4 51.2
54.5 x 34.8 51.2
54.4 x 34.8 51.2
54.6 x 34.8 51.2
12. Pressure compensation valve (R.H. travel
FORWARD)
13. Pressure compensation valve (arm IN)
14. Main relief valve
15. Unload valve
16. Main relief valve
17. Spool (service)
18. Spool (bucket)
19. Spool (L.H. travel)
20. Spool (boom)
21. Spool (swing)
22. Spool (R.H. travel)
23. Spool (arm)
Criteria
Repair limit
Load at
installed Free length
length
407 N
—
{41.5 kg}
393 N
—
{40.1 kg}
375 N
—
{38.2 kg}
421 N
—
{42.9 kg}
SEN06120-00
Unit: mm
Remedy
Load at
installed
length
326 N
Replace spring if
{33.2 kg}
damaged or
315 N
deformed
{32.1 kg}
300 N
{30.6 kg}
336 N
{34.3 kg}
10-402
5