BMW 7 Series: Removing And Installing Left Cylinder Head (N63)

Necessary preliminary work

• Check TIMING
• Remove left INLET AND EXHAUST ADJUSTMENT UNIT

Release screw (1).

NOTE: Guide rail is loose from cylinder head.

Fig. 51: Identifying Screw Of Guide Rail

Release bolts (1) at front from cylinder head.

Fig. 52: Identifying Bolt On Front Cylinder Head

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. 53: Identifying Cylinder Head Bolts Releasing Sequence

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. 54: Locating Drei Bond 1209 At Joint Between Engine Block And Timing Case Cover

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

Installation note:

Renew cylinder head gasket (2)

Fit new cylinder head gasket (2).

NOTE: Graphic corresponds to cylinders 1-4.

Fig. 55: Identifying Fitting Sleeves And Cylinder Head Gasket

Put the cylinder head on.

Do not wash off bolt coating.

Installation note:

Fit new cylinder head bolts

Insert new cylinder head bolts and initially tighten so that they are free of play.

Tighten down cylinder head bolts in sequence 1 - 10.

Tightening torque 11 12 1AZ.

Fig. 56: Identifying Cylinder Head Bolts Tightening Sequence

Install and tighten down bolts (1) between cylinder head and timing case cover.

Tightening torque 11 12 2AZ.

Fig. 57: Identifying Bolts Between Cylinder Head And Timing Case Cover

Insert screw (1) of guide rail and tighten down.

Tightening torque 11 31 3AZ.

Fig. 58: Identifying Screw Of Guide Rail

If necessary, install camshafts.

Install left INLET AND EXHAUST ADJUSTMENT UNITS.

Assemble engine.

REMOVING AND INSTALLING RIGHT CYLINDER HEAD (N63)

Necessary preliminary work

• Check TIMING.
• Remove INLET AND EXHAUST ADJUSTMENT UNIT ON RIGHT SIDE.

Release screw (1).

NOTE: Guide rail is loose from cylinder head.

Fig. 59: Identifying Screw Of Guide Rail

Release bolts (1) at front from cylinder head.

Fig. 60: Identifying Bolts At Front From Cylinder Head

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

Remove all cylinder head bolts with washers.

NOTE: Shown without camshafts for purposes of clarity.

Fig. 61: Identifying Cylinder Head Bolts Releasing Sequence

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 debris drops into the oil and coolant ducts.

Threaded bores in engine block must be free of dirt and oil (risk of cracking).

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: Illustrations show N62.

Fig. 62: Locating Drei Bond 1209 At Joint Between Engine Block And Timing Case Cover

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

Fit new cylinder head gasket (2).

Fig. 63: Identifying Fitting Sleeves And Cylinder Head Gasket

Put the cylinder head on.

Do not wash off bolt coating.

Insert new cylinder head bolts and initially tighten so that they are free of play.

Tighten down the cylinder-head bolts in order 1... 10.

Tightening torque: 11 12 1AZ.

Fig. 64: Identifying Cylinder Head Bolts Tightening Sequence

Install and tighten down bolts (1) between cylinder head and timing case cover.

Tightening torque: 11 12 2AZ.

Fig. 65: Identifying Bolts Between Cylinder Head And Timing Case Cover

Insert screw (1) of guide rail and tighten down.

Tightening torque: 11 31 3AZ.

Fig. 66: Identifying Screw Of Guide Rail

If necessary, install camshafts.

Install INLET AND EXHAUST ADJUSTMENT UNIT ON LEFT SIDE.

Assemble engine.

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