11 12 100 Removing and installing cylinder head (M57T2)

WARNING: This page is about a different car, the 2013 BMW X5, 2012 BMW X5, and 2011 BMW X5. However, it is still accessible from the selected car via links, so may be relevant.

Special tools required:

Necessary preliminary tasks:

Remove cylinder head cover.
DRAIN COOLANT
Remove AIR CONDITIONING COMPRESSOR DRIVE BELT
Remove DRIVE BELT FOR ALTERNATOR
Remove vacuum pump
Remove camshafts.

IMPORTANT: Fit new cylinder head bolts.
Do not wash off bolt coating.
There must be no oil or coolant in the blind holes (risk of cracking) .
Protect alternator against engine oil and coolant. (Risk of damage) .
Cover alternator with suitable apparatus.
Assemble charge air hoses without grease and dry.

Slacken bolts (1) and (2) on exhaust turbocharger (3).

Fig 1: Identifying Slacken Bolts On Exhaust Turbocharger

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Slacken clamp (1) and release turbocharger from exhaust manifold.

Installation note:

If necessary, replace clamp.

Fig 2: Identifying Slacken Clamp

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Release screws (3) on cylinder head at rear.

Fig 3: Identifying Screws On Cylinder Head

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Remove all finger rockers (1) and set down in order.

Remove all compensating elements (2) and set down in order.

IMPORTANT: Worn rockers may only be reused on the same grooves of the camshaft.

Fig 4: Removing Compensating Elements And Rocker Arms

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Release screws (1).

Fig 5: Identifying Cylinder Head Screws

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Unfasten cylinder head bolts from outside to inside in following sequence 14... 1.

Installation note:

Fit new cylinder head bolts.

Fig 6: Cylinder Head Bolts Tightening/Loosening Sequence

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IMPORTANT: The glow plugs protrude at the sealing face and may be damaged when the cylinder head is put down.

If necessary, remove glow elements with special tool 11 6 050 .

Tightening torque: 12 23 2AZ .

Remove cylinder head.

Fig 7: Locating Cylinder Head Glow Plugs

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Remove cylinder head gasket (1).

Installation note:

Observe number of holes (2) of cylinder head gasket.

Remove all traces of oil and coolant from all threaded blind holes (3) in crankcase.

Clean sealing surface (4).

Fig 8: Identifying Cylinder Head Gasket

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NOTE: Clean sealing face of cylinder head and engine block.
Remove gasket remnants with hardwood spatula.
If the piston clearance is changed (e.g. replacing piston) the cylinder head gasket thickness must be recalculated.

NOTE: Joints between gear case cover and engine block are sealed with sealing strips stuck on as standard.

It is not necessary to apply a permanently elastic sealant.

Fig 9: Locating Cylinder Head Gasket

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Check dowel sleeve (1) for damage and replace if necessary.

Transitions (2) must be absolutely free of grease.

Fit new cylinder head gasket.

Fig 10: Identifying Cylinder Head Gasket And Dowel Sleeve

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Carefully fit cylinder head.

Fit new cylinder head bolts.

Tighten down the cylinder head bolts in order 1... 14.

Tightening torque: 11 12 1AZ .

Fig 11: Cylinder Head Bolts Tightening/Loosening Sequence

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Use special tool 00 9 120 for torsion angle tightening.

Fig 12: Tightening Cylinder Head Bolt

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Tighten down screws (1).

Fig 13: Identifying Cylinder Head Screws

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Installation note:

Worn rockers may only be reused on the same grooves of the camshaft.

Oil camshaft bearings and bearing caps.

Install all finger rockers and compensating elements.

Fig 14: Identifying Rockers And Compensating Elements

Courtesy of BMW OF NORTH AMERICA, INC.

Assemble engine.