Komatsu PC88MR-10 Shop Manual page 148

Hydraulic excavator
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10 Structure and function
Control valve
Boom swing valve
7. Pressure compensation valve F
8. Suction valve
9. Suction valve
10. Spool
11. Pressure compensation valve R
Merge-divider valve block
12. Merge-divider valve spool
13. Unload valve
14. Check valve
15. Cooler bypass valve
16. Unload valve
17. Main relief valve
18. Check valve
19. Sequence valve
F: Flow control valve
R: Pressure reducing valve
10-70
PC88MR-10

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