11 12 719 Milling cylinder head sealing surface (B48, B46)

WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2019 MINI Cooper, 2018 MINI Cooper, 2017 MINI Cooper, 2016 MINI Cooper, and 2015 MINI Cooper. However, it is still accessible from the selected car via links, so may be relevant.

Preliminary work needed:

Remove CYLINDER HEAD .
Check cylinder head for WATERTIGHTNESS

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

NOTE: Max. deviation from flatness (longitudinal) 0.10 mm

Fig 1: Check Evenness Of Cylinder Head Sealing Surface (Longitudinal)

Courtesy of BMW OF NORTH AMERICA, INC.

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

NOTE: Max. deviation from flatness (transverse) 0.05 mm

Fig 2: Check Evenness Of Cylinder Head Sealing Surface (Transverse)

Courtesy of BMW OF NORTH AMERICA, INC.