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

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IMPORTANT: When working on the engine oil, coolant or fuel circuit, you must protect the alternator against contamination.
Risk of damage!
Cover alternator with suitable materials.
Failure to comply with this procedure may result in an alternator malfunction.

IMPORTANT: Aluminum-magnesium materials .
No steel screws/bolts may be used due to the threat of electrochemical corrosion.
A magnesium crankcase requires aluminum screws/bolts exclusively.
Aluminum screws/bolts must be replaced each time they are released .
Aluminum screws/bolts are permitted with and without color coding (blue).
For reliable identification:
Aluminum screws/bolts are not magnetic .
Joining torque and angle of rotation must be observed without fail (risk of damage) .

Necessary preliminary work:

Remove left ENGINE SUPPORT ARM .
LOWERING FRONT AXLE .
Drain and add ENGINE OIL .

Release bolts along line (1).

Tightening torque 11 13 2AZ .

Installation note:

Replace aluminum screws .

Release screw (2), gearbox oil lines to oil sump.

Tightening torque 11 13 10AZ .

Release screws (3), gearbox to oil sump.

Tightening torque 11 13 8AZ .

If necessary, release nuts (4). Remove oil level sensor.

Tightening torque 11 13 9AZ .

Fig 1: Identifying Bolts, Screws, And Nuts

Courtesy of BMW OF NORTH AMERICA, INC.

Installation note:

Replace sealing ring .

IMPORTANT: There must be no adhesive residues in the lower crankcase retaining threads.
Clean retaining threads and sealing surfaces .

Installation note:

Replace all seals .

Assemble engine.