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

WARNING: This page is about a different variant/trim than selected.

(Cylinder Bank 1 To 4)

Remove design cover.

Remove acoustic cover.

Remove center of assembly partition wall

Remove electronics box cover.

Remove electronics box seal.

Remove control unit. See CONTROL UNIT BOX .

Remove ignition coil cover. See Figure.

Remove intake filter housing (without raw air housing). See INTAKE FILTER & HOSE .

Remove intake hose with air-mass flow sensor

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.

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: Removing 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: Replacing Sealing Rings On Sensors

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Remove ignition coils. See IGNITION COIL .

Release both grounding cables.

Unlock and detach vent hose.

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

Fig 3: Unclipping Cable Duct And Removing Cable From Holder

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Remove servomotor for right eccentric shaft.

Unfasten screws.

Remove spacer (3) upwards.

Replace seal.

Fig 4: Removing Spacer

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Remove injection pipe.

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

Remove cylinder-head cover.

Fig 5: Removing Cylinder-Head Cover

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Installation:

Note installation direction of sealing ring (1).

Groove in sealing ring (1) points outwards.

Fig 6: Identifying Groove In Sealing Ring

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

Fig 7: Installing Sealing Ring Into Cylinder Head Cover

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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: Securing Gasket In Cover Groove

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Installation:

Replace spark plug domes.

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

Fig 9: Coating Rubber Seals On 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 In Cylinder Head

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Installation:

Clean seal residue from sealing surfaces.

Coat contact surfaces of joint with Drei Bond 1209.

Fig 11: Coating Contact Surfaces Of Joint With Drei Bond 1209

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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 12: Applying Thin Uniform Bead Of Drei Bond 1209 Sealing Agent

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Replace sealing elements (1).

Fig 13: Replacing Sealing Elements

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Installation:

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

Fig 14: Identifying Proper Seating Of Gasket On Rear Side Of Cylinder Head

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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.

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

Fig 15: Tightening Screw Connections Of Cylinder Head Cover

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