11 12 005 Removing and installing / sealing left cylinder head cover (N62 / N62TU)

(cylinder bank 5 to 8) 

Remove design cover

Remove acoustic cover

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

Remove ignition coil cover.

Installation: 

The cylinder head cover and its gasket are made from a single material which adapts to the contour of the cylinder head.

The gasket and uncoupling elements of the screw connection are matched to each other.

If the cylinder head cover was leaking, the fault can only be rectified with a new cylinder head cover, new gasket and new screw connections.

Unclip cable holder (1) with cables.

Fig 1: Unclipping Cable Holder With Cables

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Pull tank venting valve (2) off holder.

Unlock plug (1) and remove.

Fig 2: Unlocking Plug

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Release screws and remove sealing element (2).

Fig 3: Removing Sealing Element

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Remove sensors (3 and 4).

Installation: 

Replace sealing element (2).

Replace sealing rings on sensors (3 and 4).

Removing ignition coils.

Release both grounding cables.

Fig 4: Unclipping Cable Duct

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Unlock and detach vent hose.

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

Remove servomotor for left eccentric shaft.

Unfasten screws.

Fig 5: Removing Spacer

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Remove spacer (3) upwards.

Installation: 

Replace sealing ring.

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

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

Fig 6: Removing Cylinder Head Cover

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If necessary, pull out oil dipstick.

Remove cylinder-head cover.

Installation: 

Note installation direction of sealing ring (1).

Fig 7: Identifying Groove In 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 8: Installing Sealing Ring Into Cylinder Head Cover

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Installation: 

Replace seal (1).

Fig 9: Installing Gasket

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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: 

Replace spark plug domes.

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

Fig 10: Identifying Rubber Seals On Spark Plug Dome

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Installation: 

Install spark plug domes in cylinder head.

Fig 11: Installing Spark Plug Domes In Cylinder Head

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When fitting cylinder head cover: 

Align spark plug domes to cylinder head cover.

Installation: 

Clean seal residue from sealing surfaces.

Coat contact surfaces of joint with Drei Bond 1209.

Fig 12: Locating Sealing Surfaces

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Installation: 

Clean seal residue from sealing surfaces.

Apply a thin, uniform bead of Drei Bond 1209 sealing agent to transition area of half-moon sections.

Fig 13: Locating Transition Area Of Half-Moon Sections

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Replace sealing elements (1).

Fig 14: Replace Sealing Elements

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Installation: 

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

Fig 15: Locating Gasket

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Installation: 

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

Fig 16: Locating Screw Connections Of Cylinder Head Cover

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Replace screw connections (3).

Insert screw connections (1, 2 and 3) without pretension and align cover.

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