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

WARNING: This page is about a different car, the 2010 BMW X6, 2009 BMW X6, and 2008 BMW X6. However, it is still accessible from the selected car via links, so may be relevant.

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:

Remove fan cowl with electric fan. See 17 11 035 REMOVING AND INSTALLING/REPLACING FAN COWL WITH ELECTRIC FAN (N54) .
Remove front differential . See 31 50 001 REMOVING AND INSTALLING/REPLACING FRONT DIFFERENTIAL .
Remove left charge-air duct
Release power steering pump and place to one side. See 32 41 033 REMOVING AND INSTALLING/REPLACING POWER STEERING PUMP FOR POWER STEERING GEAR WITH ACTIVE FRONT STEERING (N54) or 32 41 037 REMOVING AND INSTALLING/REPLACING POWER STEERING PUMP FOR POWER STEERING GEAR WITH DYNAMIC DRIVE (N54) .
Observe torque specification without fail during installation.
Drain and add engine oil .

Unclip electric leads (3) of monitor sensors from holder (4).

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

Release bolts (1) on transmission.

Tightening torque 11 13 6AZ , see OIL SUMP

Lay holder (4) to one side.

Disconnect plug connection (5) on oil level sensor and lay to one side.

Fig 1: Identifying Electric Leads, Holder And Plug Connections

Courtesy of BMW OF NORTH AMERICA, INC.

Release screw (1).

Tightening torque 11 13 7AZ , see OIL SUMP

Release holder (2) with transmission oil cooler lines (3) from oil sump.

Fig 2: Identifying Screw, Holder And Transmission Oil Cooler Lines

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 2/3 and 4AZ , see OIL SUMP

Installation:

Replace aluminum screws.

If necessary, release nuts (2). Remove oil level sensor.

Tightening torque 11 13 8AZ , see OIL SUMP

Fig 3: Identifying Line And Nuts

Courtesy of BMW OF NORTH AMERICA, INC.

Installation:

Replace sealing ring.

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

Installation:

Replace all seals.

Assemble engine.