11 12 100 Removing and installing cylinder head

Special tools required: 

• 11 8 580
• 11 4 471
• 11 4 472
• 00 9 120

Attention! 

When replacing the cylinder head: 

In all vehicles, the digital engine electronics (DME) must, if necessary, be reprogrammed/re-encoded after replacing  the cylinder head.

Read the vehicle I-level and proceed accordingly.

PuMA measure 62634754  must be observed (see appropriate BMW parts catalogue).

Attention! 

Replacing the cylinder head may cause damage on the valve gear due to a lack of engine oil.

It is imperative to observe REPAIR NOTES FOR CYLINDER HEAD REPLACEMENT .

Attention! 

There must be no coolant, water or engine oil in any of the threaded holes in the engine block.

Fit new cylinder head bolts.

Do not wash off bolt coating.

Jointing torque and angle of rotation must be observed without fail (risk of damage!  ).

Necessary preliminary work: 

• Remove FAN COWL
• Remove INTAKE PLENUM 
• Drain COOLANT
• Remove EXHAUST TURBOCHARGER 
• Remove INTAKE AND EXHAUST CAMSHAFT ADJUSTERS 
• Remove RIGHT ENGINE MOUNT

Removal: 

Unlock coolant line (1) and pull off.

Unclip the coolant line (1) from the holder.

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Release bearing journal (1).

Remove guide rail (2).

Release screw (3).

Remove holder (4).

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Release screws (1).

Remove guide rail (2).

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Fix intake camshaft with an open-end spanner (1).

Release screw (2).

Remove the camshaft sensor wheel (3).

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Release screws (1).

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Use special tool 11 8 580 to slacken the cylinder head bolts.

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Release the cylinder head bolts in the sequence 10 to 1  .

Remove cylinder head.

Remove the cylinder head gasket.

Installation: 

Remove coarse residues on sealing surfaces with special tool 11 4 471 from cylinder head and crankcase.

Attention! 

Do not use any metal-cutting tools (e.g. emery cloth).

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Remove fine residues on sealing surfaces with special tool 11 4 472 from cylinder head and crankcase.

Attention! 

Do not use any metal-cutting tools.

There must be no coolant, water or engine oil in the pocket holes.

Risk of cracking and corrosion! 

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Clean all blind holes.

Replace CYLINDER HEAD GASKET .

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

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Attention! 

There must be no coolant, water and engine oil in any of the threaded holes in the engine block.

Fit new cylinder head bolts.

Do not wash off bolt coating.

Lightly oil screw head support.

Jointing torque and angle of rotation must be observed without fail (risk of damage!  ).

Fit the cylinder head and secure with new bolts, tightening in the sequence 1 to 10  .

Tightening torque: 11 12 1AZ .

Secure cylinder head bolts (1) with special tool 00 9 120 and 11 8 580.

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Install and tighten down screws (1).

Tightening torque: 11 12 2AZ .

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Parts:  Replace bearing journals (1).

Position holder (4) on cylinder head.

Tighten screw (3).

Install guide rail (2).

Tighten bearing journal (1).

Tightening torque 11 31 3AZ .

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Fix intake camshaft with an open-end spanner (1).

Position the camshaft sensor wheel (3).

Tighten down screw (2).

Tightening torque 11 31 7AZ .

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Install guide rail (2).

Tighten the screws.

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Connect coolant line (1) and clip in.

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Required reworking: 

• Install RIGHT ENGINE MOUNT
• Install INTAKE AND EXHAUST CAMSHAFT ADJUSTER 
• Install EXHAUST TURBOCHARGER 
• Install INTAKE PLENUM 
• Install FAN COWL
• Add COOLANT
• Check engine for leak tightness

When replacing the cylinder head, the I-level must be encoded and programmed if necessary. 

• Connect diagnosis system and follow diagnosis instructions 
• Service functions
• Power train
• Engine electronics
• Reset VANOS adaptation values
• Encode and program I-level if necessary