11 12 105 Removing and installing left cylinder head (N63)

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Special tools required:

11 4 470 .
81 22 2 184 136.

Necessary preliminary tasks:

Drain COOLANT .
Remove FRONT AXLE completely with engine and transmission.

The graphic shows the removed engine on a lifting table special tool 81 22 2 184 136.

The graphic shows the E72

Fig 1: Identifying Engine On Lifting Table Special Tool (81 22 2 184 136)

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Necessary preliminary tasks:

Check TIMING .
Remove left INTAKE AND EXHAUST ADJUSTMENT UNIT .

Release screw (1).

NOTE: Guide rail is loose from cylinder head.

Fig 2: Identifying Guide Rail Screw

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Release bolts (1) at front from cylinder head.

Fig 3: Identifying Bolts From 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 4: Left Cylinder Head Bolts Tightening/Loosening Sequence (N63)

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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 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.

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

Fig 5: Locating Joint Between Engine Block And Timing Case Cover

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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 corresponds to cylinders 1-4.

Fig 6: Identifying Fitting Sleeves And Cylinder Head Gasket

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Put the cylinder head on.

Do not wash off bolt coating.

Installation note:

Fit new cylinder head screws .

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 7: Left Cylinder Head Bolts Tightening/Loosening Sequence (N63)

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

Tightening torque 11 12 2AZ .

Fig 8: Identifying Bolts From Cylinder Head

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

Tightening torque 11 31 3AZ .

Fig 9: Identifying Guide Rail Screw

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

Install left INTAKE AND EXHAUST ADJUSTMENT UNITS .

Assemble engine.

FILLING AND VENTING COOLING SYSTEM .