11 12 000 Removing and installing, sealing cylinder head cover (M52TU / M54 / M56)

Remove engine cover.

Remove ignition coils, refer to 12 13 511 REPLACING IGNITION COIL (M52, M52TU, M54) .

Remove wiring harness of ignition coils from cylinder head cover and place to one side.

Fig 1: Removing Hose For Engine Breather

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Remove grounding straps (1).

Remove cylinder head cover, refer to 11 12 000 REMOVING AND INSTALLING, SEALING CYLINDER HEAD COVER (M52TU / M54 / M56) .

Fig 2: Removing Grounding Straps

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Installation: 

Remove sealing debris from sealing faces of cylinder head and cylinder head cover.

Apply a sealing bead of Drei Bond 1209 on left and right sides at transition between cylinder head and VANOS adjustment unit.

Fig 3: Applying Sealant Between Cylinder Head And VANOS Unit

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Installation: 

Apply a thin and even sealing bead of Drei Bond 1209 at transition to half-moon sections at VANOS adjustment unit.

Fig 4: Applying Sealant To VANOS Adjustment Unit

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Installation: 

Apply a thin and even sealing bead of Drei Bond 1209 at transition to half-moon sections at rear of cylinder head.

Check seals and replace if necessary.

Fig 5: Applying Sealant To VANOS Adjustment Unit (Rear)

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Installation: 

Make sure gasket is correctly seated on rear and front ends of cylinder head.

Install cover bolts and align cylinder head cover.

Hand-tighten all cover bolts without preload. Tighten cap nuts crosswise from inside to outside.

Fig 6: Locating Half-Moon Gaskets On Cylinder Head

Courtesy of BMW OF NORTH AMERICA, INC.