SL 550 (230.471) V8-5.5L (273.965) (2008)
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