11 12 105 Removing and installing left cylinder head (S63)

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Special tools required:

11 4 470 .
81 22 2 184 136.

Necessary preliminary tasks:

Remove front axle with engine and transmission. See COMPLETELY REMOVING FRONT AXLE WITH ENGINE AND TRANSMISSION (DOUBLE-CLUTCH GEARBOX)or COMPLETELY REMOVING FRONT AXLE WITH ENGINE AND TRANSMISSION (MANUAL GEARBOX) .
Removed engine on table lift special tool 81 22 2 184 136.

Graphic E72.

Fig 1: Identifying Engine On Lifting Table Special Tool (81 22 2 184 136)
Courtesy of BMW OF NORTH AMERICA, INC.

Necessary preliminary tasks:

Check TIMING on left.
REMOVING INTAKE AND EXHAUST CAMSHAFT ADJUSTERS on left side.
Remove both exhaust manifolds. See LEFT EXHAUST MANIFOLD and RIGHT EXHAUST MANIFOLD .

Release screw (1).

NOTE: Guide rail is loose from cylinder head.

Fig 2: Identifying Screw Of Guide Rail

Courtesy of BMW OF NORTH AMERICA, INC.

Release bolts (1) at front from cylinder head.

Fig 3: Identifying Bolts At Front Cylinder Head

Courtesy of BMW OF NORTH AMERICA, INC.

Unfasten hose clamp (1).

Detach coolant hose (2).

Fig 4: Identifying Hose Clamp And Coolant Hose

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

Remove all cylinder head bolts with washers.

Fig 5: Left Cylinder Head Bolts Tightening/Loosening Sequence (N6301)

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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.

IMPORTANT: 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.

Fig 6: Locating 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:

Replace cylinder head gasket (2) .

Fit new cylinder head gasket (2).

NOTE: Graphic shows N63, cylinders 1-4.

Fig 7: Identifying Fitting Sleeves And Cylinder Head Gasket

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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 8: Left Cylinder Head Bolts Tightening/Loosening Sequence (N6301)

Courtesy of BMW OF NORTH AMERICA, INC.

Installation note:

Mark cylinder head bolt (1) with a colored mark for a better check of angle tightening.

Fig 9: Marking Cylinder Head Bolt

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Tighten down cylinder head bolts in sequence 1 - 10.

Tightening torque 11 12 1AZ .

Fig 10: Left Cylinder Head Bolts Tightening/Loosening Sequence (N6301)

Courtesy of BMW OF NORTH AMERICA, INC.

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

Tightening torque 11 12 2AZ .

Fig 11: Identifying Bolts At Front Cylinder Head

Courtesy of BMW OF NORTH AMERICA, INC.

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

Tightening torque 11 31 3AZ .

Fig 12: Identifying Screw Of Guide Rail

Courtesy of BMW OF NORTH AMERICA, INC.

If necessary, install camshafts. See LEFT EXHAUST CAMSHAFT and LEFT INTAKE CAMSHAFT .

Install left INTAKE AND EXHAUST ADJUSTMENT UNITS .

Assemble engine.