Necessary preliminary work

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Check TIMING
Remove left INLET AND EXHAUST ADJUSTMENT UNIT

Release screw (1).

NOTE: Guide rail is loose from cylinder head.

Fig 1: Identifying Screw Of Guide Rail

Courtesy of BMW OF NORTH AMERICA, INC.

Release bolts (1) at front from cylinder head.

Fig 2: Identifying Bolt On Front Cylinder Head

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Release cylinder head bolts in sequence (10 to 1).

Remove all cylinder head bolts with washers.

NOTE: For purposes of clarity, the graphic shows the camshafts removed.

Fig 3: Identifying Cylinder Head Bolts Releasing Sequence

Courtesy of BMW OF NORTH AMERICA, INC.

Clean sealing faces of cylinder head and engine block; if necessary, remove gasket debris compound with special tool 11 4 470 . Make sure no gasket remnants drop into oil and cooling channels.

IMPORTANT: Risk of cracking!
Threaded bores in engine block must be free of dirt and oil

Check CYLINDER HEAD for leaks.

Check CYLINDER HEAD SEALING FACE for surface evenness.

Coat joint between engine block and timing case cover with Drei Bond 1209 (refer to BMW Parts Service).

NOTE: Graphic shows an N62 engine by way of example.

Fig 4: Locating Drei Bond 1209 At Joint Between Engine Block And Timing Case Cover

Courtesy of BMW OF NORTH AMERICA, INC.

Check fitting sleeves (1) for damage and correct installation position.

Installation note: