Necessary preliminary tasks

WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2012 BMW 328xi, 2012 BMW 328i, 2011 BMW 328xi, 2011 BMW 328i, and 2010 BMW 328xi. However, it is still accessible from the selected car via links, so may be relevant.

NOTE: All bearing caps (1 and 2) are marked with numbers from 1 to 6.

Bearing cap (1) is a thrust bearing.

Release screws on bearing caps 1 to 6 (1 and 2).

Tightening torque 11 31 2AZ .

Set all bearing caps down in special tool 11 4 481 in a neat and orderly fashion.

Fig 1: Identifying Bearing Caps

G04751158

Courtesy of BMW OF NORTH AMERICA, INC.

Remove intake camshaft (2) towards top.

Installation:

Clean all bearing points and lubricate with oil.

Fig 2: Removing Intake Camshaft

G04751159

Courtesy of BMW OF NORTH AMERICA, INC.

IMPORTANT: Plain compression rings (1) can easily break.

Plain compression rings (1) are engaged at joint.

Press plain compression rings (1) apart upwards and downwards and removed towards front.

Fig 3: Pressing Plain Compression Rings

G04739815

Courtesy of BMW OF NORTH AMERICA, INC.

IMPORTANT: Markings of intake and exhaust camshafts are different.
Mixing up the intake and exhaust camshafts will result in engine damage .
A Exhaust camshaft.
E Intake camshaft

Fig 4: Identifying Exhaust/Intake Camshafts Marks

G04751161

Courtesy of BMW OF NORTH AMERICA, INC.

Insert intake camshaft (1) so that part number on mounting flats points upwards.

Position intake camshaft (1) so that cams point upwards at an angle.

Attach special tool 11 4 281 to mounting flats.

Fig 5: Identifying Intake Camshaft

G04751154

Courtesy of BMW OF NORTH AMERICA, INC.

Assemble engine.