11 13 000 Removing and installing, sealing or replacing oil sump (N54) all-wheel drive vehicle

IMPORTANT: When performing repair work on the engine oil, coolant or fuel circuit, you must protect the alternator against dirt 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

Remove engine guard.
Secure engine in INSTALLATION POSITION .
Lower FRONT AXLE .
Remove FRONT AXLE DIFFERENTIAL .
Remove BEARING SUPPORT .
Release POWER STEERING PUMP and place to one side.
Observe tightening specifications without fail during installation.
Drain and add ENGINE OIL .

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

Undo bolts at gearbox.

Tightening torque: 11 13 6AZ .

Detach return hose.

IMPORTANT: Bolts of oil sump have different lengths.
Observe different tightening torques.

Release bolts along line (1).

Tightening torque: 11 13 2/3 AND 4 AZD .

Fig 1: Identifying Cylinder Head Bolts Along Line

Courtesy of BMW OF NORTH AMERICA, INC.

Installation note:

Replace aluminum screws.

If necessary, release nuts at oil level sensor and 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 section retaining threads.
Clean retaining threads and sealing surfaces.

Installation note:

Replace all gaskets.

Assemble engine.