11 12 719 Resurfacing Cylinder Head Lower Face (N55)

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Necessary Preliminary Tasks:

Remove CYLINDER HEAD .
Remove EXHAUST CAMSHAFT .
Remove INTERMEDIATE LEVER On Intake Side.

Check Evenness of Cylinder Head Lower Faces with A Standard Straightedge (1).

NOTE: Max. Deviation From Flatness (Longitudinal) 0.10 Mm

Fig 1: Checking Evenness of Cylinder Head Lower Faces Using Standard Straightedge

Courtesy of BMW OF NORTH AMERICA, INC.

Check Evenness of Cylinder Head Lower Faces with A Standard Straightedge (1).

NOTE: Max. Deviation From Flatness (Transverse) 0.05 Mm

Fig 2: Checking Transverse Evenness

Courtesy of BMW OF NORTH AMERICA, INC.

Check Cylinder Head for WATERTIGHTNESS .

Assemble Engine.