11 12 000 Removing and installing/sealing cylinder head cover (N55)

WARNING: This page is about a different variant/trim than selected.

Necessary preliminary tasks:

Release screws (1).

Remove flange (2).

Installation note:

Renew sealing flange.

Fig 1: Identifying Flange And Screws

Courtesy of BMW OF NORTH AMERICA, INC.

Press and hold down the unlocking device on the vacuum line (1) on the vacuum reservoir (cylinder head cover) in the direction of the arrow.

Detach vacuum line (1) in upward direction.

Fig 2: Unlocking Vacuum Line

Courtesy of BMW OF NORTH AMERICA, INC.

IMPORTANT: Do not loosen the engine vent line (4) on the cylinder head cover.

To dismantle the engine vent line, loosen the screws on the air intake system (3).

NOTE: When changing a faulty engine vent line, the clutch on the coupling on the cylinder head cover may be broken open.

Fig 3: Identifying Engine Vent Line And Screws On Air Intake System

Courtesy of BMW OF NORTH AMERICA, INC.

Release screws of cylinder head cover from outside inwards in 1/2 turns.

Fig 4: Cylinder Head Cover Bolts Tightening/Loosening Sequence (N55)

Courtesy of BMW OF NORTH AMERICA, INC.

Remove cylinder head cover.

Replace all gaskets.

Fit cylinder head cover.

Insert screws of the cylinder head cover by 1/2 turn.

Tighten fit screws (1) using 8.5 Nm.

Tighten positional screw (2) using 8.5 Nm.

Tighten remaining screws of cylinder head cover in sequence 3 to 23.

Tightening torque: 11 12 4AZ .

Fig 5: Cylinder Head Cover Bolts Tightening/Loosening Sequence (N55)

Courtesy of BMW OF NORTH AMERICA, INC.