11 28 020 Replacing tensioning device for alternator drive belt (N16)

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

Necessary preliminary tasks:

Unfasten screws (2).

Tightening torque: 11 28 1AZ .

Remove tensioning device (3).

Fig 1: Identifying Belt Tensioner Nut, Screws And Plug Connection

Courtesy of BMW OF NORTH AMERICA, INC.

Assemble engine.