R 350 4MATIC (251.165) V6-3.5L (272.967) (2006)
Component Identification
Component Identification
Oil volume regulation
The power steering pump is driven by the engine at alternating speeds. Power assistance however requires a constant oil flow.
As more oil is delivered than necessary at high engine speeds, the excess oil is led back into the reservoir via the open quantity control valve. The
effect of the quantity control valve is that a constant oil flow is supplied to the steering gear over the entire speed range.
^
Engine ON, steering wheel not turned:
The pressure oil produced by the vane cells is led via the calibrated borehole to the steering gear and in addition via the calibrated borehole to the