11 12 006 Removing And Installing/Sealing Right Cylinder Head Cover (N62/N62TU)

WARNING: This page is about a different car, the 2008 BMW Alpina and 2007 BMW Alpina. However, it is still accessible from the selected car via links, so may be relevant.

(cylinder bank 1 to 4)

Remove design cover. Turn quick-release couplings through 90° and remove left design cover. Release screws and remove middle design cover.

Remove acoustic cover. Unfasten screws. Raise acoustic cover and remove towards front.

Remove center of assembly partition wall . See 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 .

Remove ignition coil cover.

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

Remove intake hose with air-mass flow sensor . See 13 62 560 REMOVING AND INSTALLING/REPLACING AIRMASS 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: Identifying Plug

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

Installation:

Replace sealing element (2).

Replace sealing rings on sensors (3 and 4).

Fig 2: Identifying Sensors And Sealing Element

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Removing ignition coils.

Release both grounding cables.

Unlock and detach vent hose.

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

Fig 3: Identifying Cable Duct

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Remove servomotor for right eccentric shaft. See 11 37 024 REMOVING AND INSTALLING/REPLACING SERVOMOTOR FOR RIGHT ECCENTRIC SHAFT (N62/N62TU) .

Unfasten screws.

Remove spacer (3) upwards.

Replace seal.

Fig 4: Identifying Spacer

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Remove injection pipe. See 13 53 240 REPLACING COMPLETE INJECTION PIPE (N62, N62TU) .

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

Remove cylinder-head cover.

Fig 5: Identifying Cylinder-Head Cover Screw

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Installation:

Note installation direction of sealing ring (1).

Groove in sealing ring (1) points outwards.

Fig 6: Identifying Sealing Ring

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

Fig 7: Identifying Sealing Ring

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Installation:

Replace seal (1).

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.

Fig 8: Locating Gasket

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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.

When fitting cylinder head cover:

Align spark plug domes to cylinder head cover.

Fig 10: Installing Spark Plug Domes To Cylinder Head Cover

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Installation:

Clean seal residue from sealing surfaces.

Coat contact surfaces of joint with Drei Bond 1209 (refer to BMW Parts Service).

Fig 11: Identifying Sealing Surfaces

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Installation:

Clean seal residue from sealing surfaces.

Apply a thin, uniform bead of Drei Bond 1209 sealing agent (refer to BMW Parts Service) to transition area of half-moon sections.

Fig 12: Identifying Sealing Surfaces

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Replace sealing elements (1).

Fig 13: Identifying Sealing Elements

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Installation:

Make sure gasket is correctly seated at sides and on rear side of cylinder head.

Fig 14: Locating Gasket

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Installation:

Screw connections (1, 2, 3 and 4) of cylinder head cover are different.

Replace screw connections (3).

Move cylinder head cover with gasket into assembly position.

Secure cylinder head cover, starting with screw connection (4) from front.

Fig 15: Identifying Cylinder-Head Cover Screw

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Tighten down screw connections (1, 2 and 3) in diagonal sequence from inside to outside.