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

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: Aluminium screws/bolts must be replaced each time they are released.
Aluminium screws/bolts are permitted with and without color coding (blue).

For reliable identification:

Aluminium screws/bolts are not magnetic .

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

Necessary preliminary tasks:

Remove FAN COWL with electric fan
Lower FRONT AXLE
Release POWER STEERING PUMP and place to one side
Observe tightening specifications without fail during installation.
Drain and add ENGINE OIL

Unclip electrical lines (3) of monitoring sensors from holder (4).

Disconnect plug connections (2) of monitoring sensors and lay to one side.

Release bolts (1) on transmission.

Tightening torque 11 13 6AZ .

Lay holder (4) to one side.

Disconnect plug connection (5) from oil level sensor and place to one side.

Fig 1: Identifying Electrical Lines, Plug Connections, Holder And Bolts

Courtesy of BMW OF NORTH AMERICA, INC.

Remove screws (1) from transmission oil cooler on oil sump.

Tightening torque 11 13 9AZ .

Fig 2: Identifying Transmission Oil Cooler Screws

Courtesy of BMW OF NORTH AMERICA, INC.

NOTE: Illustration shows oil sump of an all-wheel drive vehicle.

Fig 3: Identifying Oil Sump Bolts

Courtesy of BMW OF NORTH AMERICA, INC.

IMPORTANT: Bolts of oil sump have different lengths.

Observe different tightening torques.

Release bolts along line (1).

Tightening torque 11 13 2AZ, 3AZ, 4AZ .

Installation note:

Replace aluminium screws.

If necessary, release nuts (2). 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.