11 12 000 Removing and installing/sealing cylinder head cover (N18)

Necessary preliminary tasks:

Release connector (1) and remove.

Unlock and detach vacuum line (2).

Lay ignition leads (3 and 4) to one side.

Unclip the cable from the holder (5).

Fig 1: Identifying Connector, Vacuum Line, Ignition Leads And Cable Holder

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Release clamps (1 and 2).

IMPORTANT: Lock (3) of ventilation line must not be released.
Cylinder head cover is removed with ventilation line and air duct (4).

Installation note:

Install air duct (4) dry and free from grease.

Fig 2: Identifying Air Duct, Clamps And Ventilation Line Lock

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IMPORTANT: When replacing the cylinder head cover,

convert the ventilation line.

To do so, break off tabs of retaining clip (1) in direction of arrow outwards.

Installation note:

A new retaining clip must be fitted.

Fig 3: Breaking Retaining Clip Tabs

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Press locks together and detach ventilation line.

Fig 4: Detaching Ventilation Line

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Detach ground cable at screw connection (1).

Release cylinder head cover bolts in the sequence 12 to 1.

Fig 5: Valve Cover Bolts Tightening Sequence

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Replace gasket (1).

Replace all gaskets (2).

Installation note:

Clean all sealing surfaces.

Installation note:

Seal all edges and contact points on the cylinder head with Drei Bond 1209 sealing compound.

Fig 6: Identifying Gaskets

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Secure bolts for cylinder head cover in the sequence 1 to 12.

Tightening torque: 11 12 4AZ .

Fig 7: Valve Cover Bolts Tightening Sequence

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Assemble engine.