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

WARNING: This page is about a different car, the 2013 BMW 550i GT, 2012 BMW 550i GT, 2011 BMW 550i GT, and 2010 BMW 550i GT. 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 work

Remove DRIVE BELT for alternator.

NOTE: Observe direction of engine rotation.

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

Release screws (1).

Tightening torque 11 28 2AZ .

Fig 1: Locating Belt Pulley Screws

Courtesy of BMW OF NORTH AMERICA, INC.

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

Fig 2: Locating Belt Pulley

Courtesy of BMW OF NORTH AMERICA, INC.

NOTE: Observe direction of engine rotation.

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

Remove elasto-belt.

Assemble engine.