Komatsu PC500LC-10R Shop Manual page 237

10 STRUCTURE AND FUNCTION
4: Spool (arm Hi)
5: Suction safety valve (arm Hi IN)
6: Spool (boom Hi)
7: Suction valve (boom Hi RAISE)
8: Pressure compensation valve (boom Hi RAISE)
Service valve
9: LS shuttle valve
10: Pressure compensation valve
PC500LC-10R
COMPONENT PARTS OF HYDRAULIC SYSTEM
11: Spool
12: 2-stage suction safety valve
13: Suction safety valve
14: Pressure compensation valve
15: Unload valve
16: Main relief valve
17: LS bypass plug
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