11 28 050 Replacing A/C compressor drive belt with belt tensioner (S63)

WARNING: This page is about a different car, the 2013 BMW X5 M, 2012 BMW X5 M, 2011 BMW X5 M, and 2010 BMW X5 M. However, it is still accessible from the selected car via links, so may be relevant.

IMPORTANT: Risk of damage!
Release screws (1) on vibration damper 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:

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 alternator DRIVE BELT .

NOTE: Observe direction of engine rotation.

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

Release screws (1).

Tightening torque 11 28 2AZ .

Fig 1: Identifying Vibration Damper 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) is reached on vibration damper.

Remove elasto-belt.

Fig 2: Identifying Elasto-Belt

Courtesy of BMW OF NORTH AMERICA, INC.

Assemble engine.