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Home >> BMW >> 2018 >> M4 2D Convertible, Automatic DCT Trans >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Engine - Repair -- M4 (F82 & F83) >> 11 12 Cylinder Head >> Grinding cylinder head lower face (S55 engine)

Grinding cylinder head lower face (S55 engine)

Necessary preliminary work: 

Check evenness of cylinder head sealing faces with a standard straightedge (1).

NOTE: Max. deviation from flatness (longitudinal) 0.10 mm
G04751053Courtesy of BMW OF NORTH AMERICA, INC.

Check evenness of cylinder head sealing faces with a standard straightedge (1).

NOTE: Max. deviation from flatness (transverse) 0.05 mm
G04751054Courtesy of BMW OF NORTH AMERICA, INC.

Check cylinder head for WATERTIGHTNESS .

Assemble engine.