Komatsu PC88MR-10 Shop Manual page 142

10 Structure and function
Control valve
4. Suction valve (boom swing)
5. Main relief valve
6. Suction valve (boom)
7. Suction valve (arm)
8. Suction valve (bucket)
9. Port relief valve (service)
10. Safety valve
11. Port relief valve (service)
12. Suction valve (bucket)
13. Suction valve (arm)
14. Suction valve (boom)
15. Suction valve (boom swing)
16. Suction valve (right travel)
17. Suction valve (left travel)
18. Suction valve (blade)
19. Main relief valve
20. Spool (assistant valve)
21. Spool (blade)
22. Spool (swing)
23. Spool (left travel)
24. Spool (right travel)
25. Spool (boom swing)
26. Spool (boom)
27. Spool (arm)
28. Spool (bucket)
29. Spool (service 1)
30. Unload valve
10-64 PC88MR-10