11 12 105 Removing and installing left cylinder head (N63) (X6 xDrive 50i)

Special tools required:

11 4 470
2 184 136

Necessary preliminary work:

Remove FRONT AXLE completely with engine and transmission.

The graphic shows the removed engine on a lifting table special tool 2 184 136

Graphic shows E72.

Necessary preliminary work

Check TIMING on left.
REMOVING INTAKE AND EXHAUST CAMSHAFT ADJUSTERS ON LEFT SIDE .
Remove EXHAUST MANIFOLD on left.

Release screw (1).

NOTE: Guide rail is loose from cylinder head.

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Release bolts (1) at front from cylinder head.

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Unfasten hose clamp (1).

Detach coolant hose (2).

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

Remove all cylinder head bolts with washers.

Fig 1: Cylinder Head Bolts Loosening Sequence

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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.

CAUTION: Risk of cracking!
Threaded holes 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 gear case cover with DREI BOND 1209 2.1.

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

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

Installation note:

Replace cylinder head gasket (2) .

Fit new cylinder head gasket (2).

NOTE: Graphic N63 of cylinders 1-4.

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Installation note:

Fit new cylinder head screws .

Put the cylinder head on.

Do not wash off bolt coating.

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

Apply cylinder head bolts in the sequence 1 - 10 and fit with 30 Nm.

Fig 2: Cylinder Head Bolts Tightening Sequence

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Installation note:

Mark cylinder head bolt (1) with a colored mark to check the angle tightening more effectively.

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Tighten down cylinder head bolts in sequence 1 - 10.

Tightening torque 11 12 1AZ .

Fig 3: Cylinder Head Bolts Tightening Sequence

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

Tightening torque 11 12 2AZ .

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

Tightening torque 11 31 3AZ .

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If necessary, install camshafts. Refer to 11 31 036 REMOVING AND INSTALLING/REPLACING LEFT EXHAUST CAMSHAFT (N63) REP-REP-RAF1511N63O1-1131036 - V.4 (X6 XDRIVE 50I) and 11 31 032 REMOVING AND INSTALLING/REPLACING LEFT INTAKE CAMSHAFT (N63O1) REP-REP-RAF1511N63O1-1131032 - V.4 (X6 XDRIVE 50I) .

Install left INLET AND EXHAUST ADJUSTMENT UNITS .

Assemble engine.