Komatsu PC200-8M0 Shop Manual page 149

402 Hydraulic system, Part 2
Control valve
1. Suction valve (arm OUT)
2. Suction valve (R.H. travel REVERSE)
3. Suction valve (boom RAISE)
4. Suction valve (L.H. travel REVERSE)
5. Suction safety valve (bucket DUMP)
6. Suction safety valve (service)
7. 2-stage suction safety valve (service)
8. Suction safety valve (bucket CURL)
9. Suction valve (L.H. travel FORWARD)
10. Suction safety valve (boom LOWER)
No. Check item
21 Suction valve spring
22 Check valve spring
PC200, 200LC, 220, 220LC-8M0
Standard dimension
Free length x
Installed
Outside diame-
length
ter
46.8 x 7.5 40.6
11.5 x 4.6 8.5
11. Suction valve (R.H. travel FORWARD)
12. Suction safety valve (arm IN)
13. LS shuttle valve (arm)
14. LS shuttle valve (R.H. travel)
15. LS selector valve
16. LS shuttle valve (boom)
17. LS shuttle valve (L.H. travel)
18. LS shuttle valve (bucket)
19. LS shuttle valve (service)
20. LS check valve
Criteria
Repair limit
Load at
installed Free length
length
5.5 N
—
{0.56 kg}
1.5 N
—
{0.15 kg}
SEN06120-00
Unit: mm
Remedy
Load at
installed
Replace spring if
length
damaged or
4.4 N
deformed
{0.45 kg}
1.2 N
{0.12 kg}
10-402
7