Replacing tensioning device for alternator drive belt (B48 and B46 engines) (Cooper Clubman S and JCW)

WARNING: Tensioning device is subject to spring bias (injury hazard!).

Preliminary work needed:

Removal:

Release screws (1) from belt tensioner (2).

Remove belt tensioner (2).

Courtesy of BMW OF NORTH AMERICA, INC.

Installation:

Install belt tensioner (2).

Tighten down screws (1).

Tightening torque: 11 28 1AZ .

Courtesy of BMW OF NORTH AMERICA, INC.

Required follow-up work: