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N62 Engine

Oil Filter

The canister type oil filter (3) is located under the

engine by the oil sump. The support for the oil

filter is integrated in the rear oil pump cover.

The oil filter housing (2 with o-ring) is threaded

into the rear of the oil pump cover through an

opening in the oil sump.

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ffoorr ddrraaiinniinngg tthhee ffiilltteerr aasssseemmbbllyy bbeeffoorree tthhee hhoouuss--

iinngg iiss rreemmoovveedd ((11 wwiitthh oo--rriinngg))..

The filter element support dome contains an over pressure relief valve. If the filter element

is blocked, this valve bypasses unfiltered engine oil around the element to the supply lubri-

cation to the engine.

Pressure Control

The oil pressure control valve in the oil pump has two functions:

1. Deactivates stage two oil pump circuit above 2 bar. Stage two is only active in the

lower speed range. This is to ensure that there is always sufficient oil pressure for

the VANOS units even at high oil temperatures and low speeds. The oil pump power

consumption is reduced by deactivating stage two.

2. Monitoring the required oil pressure for the engine. The piston in the control valve is

moved by a spring against the engine control pressure which is returning from the

engine. This means that precise monitoring of the actual engine oil pressure is pos-

sible.

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ssuurree ooff aapppprrooxxiimmaatteellyy 1155 bbaarr.. TThhiiss pprreevveennttss ddaammaaggee iinn tthhee ooiill ppuummpp eessppeecciiaallllyy aatt llooww ooiill