11 12 000 Removing and installing/sealing cylinder head cover (N20, N26)

Necessary preliminary tasks:

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

Fig 1: Oxygen Sensor Connector

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Release screws (1).

Remove flange (2).

Fig 2: Flange And Screws

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Only N20 engine

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

Remove vacuum line (OUT).

Release screws (2) and place pressure converter (3) to one side.

Fig 3: Electro-Pneumatic Pressure Converter And Plug Connection

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Remove cover (2).

Release nut beneath it and set positive battery cable aside.

Tightening torque: 12 42 7AZ .

Fig 4: Releasing Nut

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Fig 5: Cylinder Head Cover Bolts Tightening/Loosening Sequence (N20, N26)

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Loosen 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 6: Centering Pin

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Fig 7: Cylinder Head Cover Bolts Tightening/Loosening Sequence (N20, N26)

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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 (1 to 20).

Tightening torque: 11 12 4AZ .

NOTE: Assemble engine.
Check engine for leak tightness.