11 28 020 Removing and installing/replacing belt tensioner of the alternator (B48B)

WARNING: This page is about a different car, the 2018 BMW 330i and 2017 BMW 330i. However, it is still accessible from the selected car via links, so may be relevant.

NOTE: When replaced, the tensioning device must be de-tensioned again before removal.

Necessary preliminary work:

Remove ALTERNATOR .

Removal:

Loosen the screws along the arrows.

Guide the belt tensioner (1) out and remove.

Courtesy of BMW OF NORTH AMERICA, INC.

Installation:

Guide the belt tensioner (1) in at the alternator and install.

Tighten the screws along the arrows.

Tightening torque 12 31 2AZ .

Courtesy of BMW OF NORTH AMERICA, INC.

Required follow-up work:

Install ALTERNATOR .