HYDRAULICS 1.53 Stand-by position (engine switched off) With the machine switched off there is no pressure in the hydraulic system. Pressure spring (17) has pushed the volumetric flow controller (3) up to the stop. In this position, the upper side of control plunger (10) is connected to the tank via the volumetric flow controller (3). The control spring (11) has moved the swash plate (13) to maximum deflection. 9. LS pump (2) 1. LS compensator (3) 3. Volumetric flow controller 10. Control plunger 11. Control spring 12. Pump drive 13. Swash plate 14. Plunger 15. Pump inlet port 16. Pump outlet port 17. Pressure spring (stand-by pressure) 18. Control edge 19.
Adjustment screw (stand-by pressure) 20. Adjustment screw (max; pump pressure) 21. Pressure spring 22. Control edge AA Supply oil BB Oil at reduced pressure DD Control oil LL Tank