11 28 050 Replacing A/C compressor drive belt with belt tensioner (N63)

WARNING: This page is about a different car, the 2011 BMW 750xi, 2011 BMW 750Lxi, 2010 BMW 750xi, and 2010 BMW 750Lxi. However, it is still accessible from the selected car via links, so may be relevant.

IMPORTANT: Risk of damage!

Release screws (1) on vibration absorber only if removal position is adjusted.

If contaminated with hydraulic fluid: Replace drive belt.

Crank engine at central bolt in direction of engine rotation.

Installation note:

If the drive belt is to be reused, mark direction of travel and reinstall drive belt in same direction of rotation.

Necessary preliminary tasks:

Remove DRIVE BELT for alternator.

NOTE: Observe direction of engine rotation.

Crank engine at central bolt until marking (see arrow in illustration) is reached on vibration absorber.

Release screws (1).

Tightening torque 11 28 2AZ .

Fig 1: Identifying Belt Tensioner Screws

Courtesy of BMW OF NORTH AMERICA, INC.

IMPORTANT: Belt pulley is pretensioned.
Belt pulley tension is relieved abruptly during the cranking process!

NOTE: Observe direction of engine rotation.

Crank engine at central bolt until marking (see arrow in illustration) is reached on vibration absorber.

Remove elasto-belt.

Fig 2: Identifying Elasto-Belt

Courtesy of BMW OF NORTH AMERICA, INC.

Assemble engine.