11 28 020 Removing and installing/replacing the belt tensioner for the alternator (N47)

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Special tools required:

11 3 340

Necessary preliminary tasks:

Remove ALTERNATOR DRIVE BELT .

Release screws (1).

Remove belt tensioner (2) with roller and deflecting element.

Fig 1: Removing Belt Tensioner

Courtesy of BMW OF NORTH AMERICA, INC.

Assemble engine.

If a tensioning device is no longer needed, the special tool 11 3 340 must be removed using a vice.