11 12 000 Removing and installing/sealing cylinder head cover (N20)

Necessary preliminary tasks:

Release screw (1).

Lever out cable clip (2).

Remove cover (3).

Fig 1: Identifying Cable Clip, Cover And Screw

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Unclip oxygen sensor connector (1) from holder and disconnect plug connection.

Fig 2: Identifying Oxygen Sensor Connector

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Release screws (1).

Remove flange (2).

Fig 3: Identifying Flange And Screws

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Disconnect plug connection (1) from the electro-pneumatic pressure converter (3).

Remove vacuum line (OUT).

Undo screws (2) and put electro-pneumatic pressure converter to one side.

Fig 4: Identifying Plug Connection, Electro-Pneumatic Pressure Converter And Screws

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Unfasten engine wiring harness (1) at cylinder head cover.

Unscrew cable channel (2) from the cylinder head cover.

Unclip the cable channel (3) from the cylinder head cover.

Fig 5: Identifying Engine Wiring Harness And Cable Channel

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Fig 6: Cylinder Head Cover Bolts Tightening/Loosening Sequence (N20)

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

Remove cylinder head cover.

Replace all gaskets.

Clean sealing surfaces at the contact surfaces of the cylinder head and the spark plug channels.

Installation note:

Pay attention when placing cylinder head cover on centering pin (1)

Fig 7: Identifying Cylinder Head Cover On Centering Pin

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Fig 8: Cylinder Head Cover Bolts Tightening/Loosening Sequence (N20)

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Fit cylinder head cover.

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

Tighten the cylinder head cover screws in sequence_(20 to 1).

Tightening torque: 11 12 4AZ .

NOTE: Assemble engine.
Check engine for leak tightness.