Removing Cylinder Head Covers

REMOVING AND INSTALLING/SEALING BOTH CYLINDER HEAD COVERS

CAUTION: BMW anti-theft radios can be rendered useless by disconnecting the battery. Make sure you know the correct code before disconnecting the battery. See your owner's manual for more information.

- Disconnect negative battery lead.




- Pry out sealing caps. Unscrew nuts.
- Remove acoustic cover.




- Remove upper section of suction filter housing style with mass air flow sensor.




- Remove covers from ignition coils.
- Remove ignition coils, Removing Ignition Coils




- Unfasten left and right cable ducts and fold inwards.

NOTE: Note cable guide and plug connection to transmission control unit and to coolant manifold.




- Unfasten positive battery terminal on battery support point.




- Unfasten retaining elements on left and right sides.





Installation Note:
Layout of retaining elements:
(1) Nut
(2) Washer
(3) Rubber mount





Installation Note:
- Check seal, replacing if necessary.
- Coat outer and inner grooves and sealing face of cylinder head cover all round with anti-friction rubber coating, e.g. glycerine.
- Press internal gasket into groove in cover without torsional stress, starting at the four corner radii.





Installation Note:
- Align outer gasket loosely on groove in cover.
- Secure gasket in groove in cover, starting in the corner radii at the back (1) and locate without torsional stress in the groove.





Installation Note: Coat contact faces of joint with liquid sealing compound Hylomar SQ 32 M.





Installation Note: Check that side of gasket is correctly seated and check back of cylinder head.





Installation Note:
- Screw two retaining elements to the locating points, without preload at this stage, and align the cover.
- Install all other retaining elements and tighten crosswise from inside to outside.