Removing and Installing/Sealing Left Cylinder Head Cover

11 12 005 Removing and installing/sealing left cylinder head cover (N74)

Special tools required:





Necessary preliminary tasks:
^ Remove acoustic cover
^ Clamp off battery negative terminal
^ Remove left intercooler
^ Remove intake air manifold
^ Remove ignition coils on right
^ Remove fuel rail
^ Detach wiring harness for injectors and lay to one side
^ Remove H.P. pump.





Release bolts in sequence (24 to 1).

Remove cylinder head cover.





Clean sealing surface (1) with special tool 11 4 470.

Installation:
Replace seal (2).

Note:
Graphics show N63.





Apply thin coating of Drei Bond 1209 sealing on left and right contact points on gear case cover.





Installation:
Replace profile seal (1) on cylinder head cover.





Installation:
It is important to join screw (1) for exact positioning of the camshaft sensors.

Fit cylinder head cover.

Position screw (1).

Release screw (1) by 90°.

Note:
Graphics show N63.





Secure cylinder head cover in sequence (1 to 24) in two work steps.

Tightening torque 11 12 3AZ.





Assemble engine.

Installation:
Change over all sensors when replacing cylinder head cover.