11 13 000 Removing and installing, sealing or replacing oil sump (N52) AWD

WARNING: This page does not describe the selected car, but rather 16 other vehicles, including the 2008 BMW Z4, 2007 BMW Z4, 2007 BMW 530xi, 2007 BMW 530i, and 2007 BMW 525xi. However, it is still accessible from the selected car via links, so may be relevant.

IMPORTANT: Aluminium-magnesium materials.

No steel screws/bolts may be used due to the threat of electrochemical corrosion.

A magnesium crankcase requires aluminium screws/bolts exclusively.

Aluminium screws/bolts must be replaced each time they are released.

The end faces of aluminium screws/bolts are painted blue for the purposes of reliable identification.

Jointing torque and angle of rotation must be observed without fail (risk of damage).

Necessary preliminary tasks:

Remove engine splash guard.
Secure engine in Installation Position.
Lower Front Axle.
Remove left drive shaft.
Remove right drive shaft.
Remove front axle differential.

NOTE: The lines must be detached from the engine oil sump in the case of the optional extra automatic transmission; if necessary, detach vane pump and place to one side.

Release bolts (3) on transmission.

Detach return hose (2).

Release screws along line (1).

Installation:

Replace aluminium screws.

Replace all seals.

If necessary, release bolts (4), remove oil level sensor.

NOTE: Fig 1 shows N52.

Fig 1: Identifying Oil Level Sensor, Return Hose, Retaining Screws And Bolts

Courtesy of BMW OF NORTH AMERICA, INC.

Assemble engine.