1112000 Removing and installing or sealing cylinder head cover (N51)

WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2011 BMW 328xi, 2011 BMW 328i, 2010 BMW 328xi, 2010 BMW 328i, and 2009 BMW 328xi. However, it is still accessible from the selected car via links, so may be relevant.

IMPORTANT: Aluminium-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:

Remove acoustic cover.
Remove rod-type ignition coils.
Unclip wiring harness for fuel injectors.
Remove TENSION STRUT .
Remove CLEAN AIR DUCT .

Unlock and detach engine vent hose (1).

If necessary, pull off metal bracket (2) in direction of arrow.

Release screws (3).

Tightening torque: 11 37 3AZ .

Remove servodrive (4) in direction of arrow.

If necessary, release nuts (5).

If necessary, remove secondary air valve (6).

Installation:

Replace aluminum screws.

Fig 1: Pulling Off Metal Bracket

Courtesy of BMW OF NORTH AMERICA, INC.

Release screws in area (1).

Installation:

Replace aluminum screws.

Tightening torque 11 12 4AZ .

Release screws (2).

Tightening torque 11 12 4AZ .

Installation:

Replace aluminum screws.

Fig 2: Identifying Screws

Courtesy of BMW OF NORTH AMERICA, INC.

Replace seal (1).

Replace seal (2).

Installation:

Clean all sealing surfaces.

Do not clean sealing faces (1 and 2) with a metal-cutting tool.

Fig 3: Identifying Seal On Sealing Faces

Courtesy of BMW OF NORTH AMERICA, INC.

Assemble engine.