Komatsu PC200-8M0 Shop Manual page 153

402 Hydraulic system, Part 2
Control valve
1. Return spring
2. Merge-divider valve (for LS)
3. Valve (sequence valve)
4. Spring (sequence valve)
5. Merge-divider valve (main)
6. Return spring
Boom valve
7. Boom hydraulic drift prevention valve
8. LS shuttle valve
9. Pressure compensation valve (LOWER)
10. Spool
11. Suction safety valve (LOWER)
12. Regeneration circuit check valve
13. Suction valve (RAISE)
14. Pressure compensation valve (RAISE)
No. Check item
29 Spool return spring
30 Check valve spring
31 Spool return spring
32 Check valve spring
33 Check valve spring
34 Piston return spring
35 Piston return spring
PC200, 200LC, 220, 220LC-8M0
Standard dimension
Free length x
Installed
Outside diame-
length
ter
36.4 x 21.8 33.0
70.9 x 18.0 56.0
64.5 x 32.3 63.0
33.0 x 12.0 26.0
33.8 x 6.0 29.0
31.5 x 10.3 19.5
30.7 x 20.5 23
L.H. travel valve
15. Merge-divider valve (travel junction valve)
16. Return spring
17. LS shuttle valve
18. Pressure compensation valve (FORWARD)
19. Spool
20. Suction valve (FORWARD)
21. Suction valve (REVERSE)
22. Pressure compensation valve (REVERSE)
Bucket valve
23. LS shuttle valve
24. Pressure compensation valve (CURL)
25. Spool
26. Suction safety valve (CURL)
27. Suction safety valve (DUMP)
28. Pressure compensation valve (DUMP)
Criteria
Repair limit
Load at
installed Free length
length
121 N
—
{12.3 kg}
250 N
—
{25.5 kg}
178 N
—
{18.1 kg}
35.3 N
—
{3.6 kg}
13.7 N
—
{1.4 kg}
5.9 N
—
{0.6 kg}
50.0 N
—
{5.1 kg}
SEN06120-00
Unit: mm
Remedy
Load at
installed
length
96.5 N
{9.84 kg}
200 N
{20.4 kg}
Replace spring if
142 N
damaged or
{14.5 kg}
deformed
28.2 N
{2.88 kg}
11.0 N
{1.12 kg}
4.71 N
{0.48 kg}
40.0 N
{4.08 kg}
11
10-402