11 12 719 Resurfacing cylinder head lower face (N55 Hybrid)

WARNING:

High-voltage hazard!

The following must be strictly observed prior to starting work :

Necessary preliminary work:

Check evenness of cylinder head sealing 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 sealing 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.