11 12 719 Resurfacing cylinder head lower face (N55)

Necessary preliminary work:

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 (Longitudinal)

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 Evenness Of Cylinder Head Lower Faces (Transverse)

Courtesy of BMW OF NORTH AMERICA, INC.

Check cylinder head for WATERTIGHTNESS .

Assemble engine.