11 13 000 Removing and installing, sealing or replacing oil sump (N54, N54T)

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 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.

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

Necessary preliminary tasks:

NOTE: On vehicles with option SA205 (automatic transmission), it is necessary to remove the transmission oil cooler lines from the oil sump.

Release bolts (3) on transmission.

Tightening torque 11 13 6AZ .

Detach return hose (2).

IMPORTANT: Bolts of oil sump have different lengths.

Observe different tightening torques.

Fig 1: Identifying Return Hose With Bolts And Nuts

Courtesy of BMW OF NORTH AMERICA, INC.

Release bolts along line (1).

Tightening torque 11 13 2 AND 3AZ .

Installation note:

Replace aluminum screws.

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

Tightening torque 11 13 8AZ .

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.