11 12 006 Removing and installing / sealing right cylinder head cover (N62 / N62TU): Notes

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(cylinder bank 1 to 4)

Remove design cover

Remove acoustic cover

Remove center of assembly partition wall. Refer to 51 71 085 REMOVING AND INSTALLING CENTER OF ASSEMBLY COMPARTMENT BULKHEAD .

Remove electronics box cover.

Remove electronics box seal.

These work steps are described in the section Replacing control unit. Refer to 12 14 550 REPLACING CONTROL UNIT (DIGITAL MOTOR ELECTRONICS (N62) .

Remove ignition coil cover.

Remove intake filter housing (without raw air housing). Refer to 13 71 000 REMOVING AND INSTALLING INTAKE FILTER HOUSING (N62) .

Remove intake hose with air-mass flow sensor. Refer to 13 54 250 REPLACING AIR INTAKE HOSE (BETWEEN AIR-MASS FLOW SENSOR AND THROTTLE VALVE ASSEMBLY) (N62) and 13 62 560 REMOVING AND INSTALLING/REPLACING AIR-MASS FLOW SENSOR (N62) .

NOTE: For purposes of clarity, the following work steps are shown on the engine after it has been removed.

Unlock plug (1) and remove.

Fig 1: Unlocking Plug

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Release screws and remove sealing element (2). Remove sensors (3 and 4).

Fig 2: Removing Sealing Element And Sensors

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Installation:

Replace sealing element (2).

Replace sealing rings on sensors (3 and 4).

Removing ignition coils.

Release both grounding cables.

Fig 3: Identifying Cable Duct For Removal

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Unlock and detach vent hose.

Unclip cable duct (1) and remove cable from holder.

Remove servomotor for right eccentric shaft. Refer to 11 37 024 Removing and installing/replacing servomotor for right eccentric shaft (N62) .

Unfasten screws.

Fig 4: Removing Spacer

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Remove spacer (3) upwards.

Replace seal.

Remove injection pipe. Refer to 13 53 240 REPLACING COMPLETE INJECTION PIPE (N62) .

Release screw connections (1,2,3 and 4).

Fig 5: Removing Cylinder-Head Cover

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Remove cylinder-head cover.

Installation:

Note installation direction of sealing ring (1).

Fig 6: Identifying Installation Direction Of Sealing Ring

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Groove in sealing ring (1) points outwards.

Replace sealing ring (1) and press into cylinder head cover until flush.

Fig 7: Installing Sealing Ring

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Installation:

Replace seal (1).

Fig 8: Aligning Gasket In Cover Groove

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Align gasket (1) loosely in cover groove. Starting at corner radii, secure gasket (1) in cover groove and press into groove so that it is free of tension.

Installation:

Make sure sliding rails are correctly seated when mounting on cylinder head.

Installation:

Replace spark plug domes.

Coat rubber seals on spark plug dome (1) with anti-friction rubber coating.

Fig 9: Identifying Spark Plug Dome

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Installation:

Install spark plug domes in cylinder head.

Fig 10: Installing Spark Plug Domes In Cylinder Head

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When fitting cylinder head cover:

Align spark plug domes to cylinder head cover.