Checking cylinder head for watertightness (B48 and B46 engine) (Cooper S and John Cooper Works)

WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2021 MINI Cooper, 2020 MINI Cooper, 2019 MINI Cooper, 2018 MINI Cooper, and 2017 MINI Cooper. However, it is still accessible from the selected car via links, so may be relevant.

Special tools required:

2 361 215

Preliminary work needed:

Remove CYLINDER HEAD .
ALL HYDRAULIC VALVE CLEARANCE COMPENSATING ELEMENTS .
Remove ECCENTRIC SHAFT .

Unscrew nuts (1).

Tightening torque 11 62 1AZ .

Remove trim strip (2).

G12700786

Courtesy of BMW OF NORTH AMERICA, INC.

2 361 215 Position and fasten cylinder head (1) on special tool.

NOTE: Assemble special tool in a way that all water ducts on the cylinder head are sealed.

G12700787

Courtesy of BMW OF NORTH AMERICA, INC.

Disassemble connecting bracket (1).

G12700788

Courtesy of BMW OF NORTH AMERICA, INC.

Attach special tool 2 361 215 to cylinder head and secure.

NOTE: Compressed air at special tool maximum 3 bar.
Heat cylinder head to 60°.
Visual inspection in a water bath.

G12700789

Courtesy of BMW OF NORTH AMERICA, INC.

Required follow-up work:

Remove all special tools
Install all HYDRAULIC VALVE CLEARANCE COMPENSATING ELEMENTS .
Install ECCENTRIC SHAFT .
Install the CYLINDER HEAD .
Assemble engine