11 12 719 Milling cylinder head sealing Face (N62)

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(cylinder head dismantled)

Check evenness of cylinder head sealing surface with a standard straight-edge (1).

Fig 1: Checking Evenness Of Cylinder Head Sealing Surface - Maximum Plane

Courtesy of BMW OF NORTH AMERICA, INC.

NOTE: Maximum plane deviation: longitudinal 0.10 mm.

Fig 2: Checking Evenness Of Cylinder Head Sealing Surface - Transversal

Courtesy of BMW OF NORTH AMERICA, INC.

NOTE: Maximum plane deviation: transversal 0.05 mm.

Machining limit, refer to ENGINE - TECHNICAL DATA .

NOTE: A cylinder head seal 0.3 mm thicker than usual can be obtained for machined (milled) cylinder heads.

Fig 3: Identifying Cylinder Head Seal

Courtesy of BMW OF NORTH AMERICA, INC.