11 12 719 Resurfacing cylinder head sealing surface (M52 / M52TU / M54 / M56)

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(Cylinder head dismantled)

Check flatness of cylinder head sealing surface with a commercially available straightedge.

Deviation from flatness max. 0.05 mm.

Fig 1: Checking Flatness Of Cylinder Head

Courtesy of BMW OF NORTH AMERICA, INC.

NOTE: Machining limit; 139.7 mm.

Fig 2: Identifying Cylinder Head Height

Courtesy of BMW OF NORTH AMERICA, INC.

NOTE: For compression comparison check, a repair cylinder head seal is provided.

Fig 3: Identifying Cylinder Head Seal

Courtesy of BMW OF NORTH AMERICA, INC.