Komatsu PC600LC-7 Manual page 104

STRUCTURE, FUNCTION AND MAINTENANCE STANDARD
(4/4)
1. Suction-safety valve
2. Spool (bucket Lo)
3. Spool (arm throttle)
4. Spool (service / bucket Hi)
5. Spool (arm Hi)
6. Check valve
10-72
7. Spool (arm Lo)
8. Suction-safety valve
9. Check valve
10. Spool (R.H. travel)
11. Suction-safety valve
12. Suction valve
CONTROL VALVE
PC600, 600LC-7