S 500 4MATIC (220.184) V8-5.0L (113.966) (2003)
Component Identification
Component Identification
Oil volume regulation
The vane-type pump is driven by the engine at alternating speeds. Power assistance however requires a constant oil flow.
As more oil than is necessary is pumped at higher engine speeds, the surplus oil is fed back to the intake side of the vane-type pump via the infinitely