11 13 000 Removing And Installing, Sealing Or Replacing Oil Sump (N52K)

WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2013 BMW 128i, 2012 BMW 128i, 2011 BMW 128i, 2010 BMW 128i, and 2009 BMW 128i. However, it is still accessible from the selected car via links, so may be relevant.

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

Necessary preliminary tasks:

Lower front axle . See FRONT SUB FRAME .
Drain and add engine oil. See 11 00... ENGINE OIL SERVICE (N52K) .

NOTE: The lines must be detached from the oil sump on vehicles with optional extra SA205 (automatic transmission); if necessary, detach oil pump and place to one side.

Fig 1: Plug Connections, Holder, Electric Leads And Bolts

Courtesy of BMW OF NORTH AMERICA, INC.

Unclip electric leads (2) of monitor sensors from holder (3).

Disconnect plug connections (1) of monitor sensors and lay to one side.

Release bolts (5) on transmission.

Tightening torque. See 11 13 7AZ in OIL SUMP .

Lay holder (3) to one side.

Disconnect plug connection (4) on oil level sensor.

Detach return hose (2).

IMPORTANT: For vehicles with optional extra SA205 (automatic transmission), bolts of different lengths are installed for mounting the oil sump. Observe different tightening torques.

Release bolts along line (1).

For vehicles with optional extra SA205 (automatic transmission): Tightening torque. See 11 13 2 and 3AZ in OIL SUMP .

For vehicles without optional extra SA205 (automatic transmission): Tightening torque. See 11 13 5AZ in OIL SUMP .

Installation:

Replace aluminum screws .

If necessary, release bolts (4), remove oil level sensor.

Tightening torque. See 11 13 11AZ in OIL SUMP .

Fig 2: Identifying Bolts On Transmission

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.