STRUCTURE AND FUNCTION CONTROL VALVE 4 9 4 5 8 3 2 7 6 1 Section A - A Section B- B AA BB 12 10 13 11 AA BB Section BB-BB Section AA-AA Section C - C RKS00521 1. Main relief valve 2. Stop plug (lift arm bottom side) 3. Suction valve (bucket bottom side) 4. Plug 5. Plug 6. Series - parallel circuit switching valve 7. Spool (lift arm) 8. Spool (bucket) 9. Spool (attachment) 10. Flow divider 11. Check valve (circulating circuit) 12. Combination circulating valve 13. Leveling circulating valve 10-33 SK818-5 SK820-5 turbo