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Home >> BMW >> 2009 >> X5 35d >> Repair and Diagnosis >> Engine Mechanical >> Blowers, Superchargers & Turbochargers >> Engine - Repair (M57) >> 1112 Cylinder Head And Cylinder Head Cover >> 11 12 101 Replacing the cylinder head gasket (M57T2-SCR)

11 12 101 Replacing the cylinder head gasket (M57T2-SCR)

Necessary preliminary work: 

IMPORTANT: Replace cylinder head gasket each time cylinder head is dismantled.

Remove cylinder head gasket (1).

Pay attention to cylinder head gasket thickness (2), identifiable by number of holes from 1 to 3.

IMPORTANT: Clean all blind hole threaded holes (3).
Remove oil and coolant (risk of cracking). 

Clean sealing surface (4).

Fig 1: Identifying Cylinder Head Gasket And Sealing Surface
G06852700Courtesy of BMW OF NORTH AMERICA, INC.

Use cylinder head gasket with the same thickness marking (1).

Number of holes 1 to 3.

IMPORTANT: If the piston protrusion is altered by machining of the sealing surface on the engine block, the cylinder head gasket must be remeasured.
(Refer to Removing and installing PISTON ).
Fig 2: Identifying Thickness Marking On Cylinder Head Gasket
G06852741Courtesy of BMW OF NORTH AMERICA, INC.

Installation 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 3: Locating Sealant Applying Joints Of Gear Case Cover And Engine Block
G06852701Courtesy of BMW OF NORTH AMERICA, INC.

Assemble engine.