STRUCTURE AND FUNCTION HYDRAULIC PUMP HST PUMP LPV40 + 40 (HIGHFLOW) 1. Piston pump 2. Control piston 3. Suction safety valve 4. Charge safety valve 5. Charge pump 6. Work equipment pump 7. Adjustment screw (Neutral position) 8. Adjustment screw (Max. displacement) 9. Adjustment screw (Pump power control) 10. AS valve 11. Shuttle valve STRUCTURE This pump is composed of variable swash plate type tan- dem piston pumps (1), control pistons (2), suction safety valves (3), charge safety valve (4), charge pump (5), work equipment gear pumps (6), and adjustment screws (7), (8), (9), AS valve (10), and shuttle valves (11). 10-16 SK818-5 SK820-5 turbo