Komatsu ecot3 WA500-6 Shop Manual page 22

Lift arm Hi and bucket Hi valves
1. Load check valve (Lift arm Hi)
2. Spool (Lift arm Hi)
3. Load check valve (Bucket Hi)
4. Spool (Bucket Hi)
5. Suction valve (Bucket Hi) and (Lift arm Hi)
6. Unload valve
7. Main relief valve
8. LS bypass valve
WA500-6
1 7
Hydraulic system
Control valve
10-17