11 28 050 Replacing A/C Compressor Drive Belt With Belt Tensioner (N62/N62TU)

WARNING: This page does not describe the selected car, but rather 13 other vehicles, including the 2010 BMW 650i, 2009 BMW 650i, 2008 BMW 750i, 2008 BMW 750Li, and 2008 BMW 650i. However, it is still accessible from the selected car via links, so may be relevant.

Special tools required:

11 3 340

Necessary preliminary tasks:

Remove ALTERNATOR DRIVE BELT
Remove engine splash guard.

NOTE:

If the drive belt is to be reused:

Mark direction of travel and reinstall drive belt in same direction of travel.

Pretension belt tensioner slowly and carefully with a Torx socket as far as it will go and secure with special tool 11 3 340.

Remove drive belt.

Fig 1: Securing Drive Belt With Special Tool

Courtesy of BMW OF NORTH AMERICA, INC.

IMPORTANT:

If contaminated with hydraulic fluid: Replace drive belt.

Put on the drive belt.

Remove special tool 11 3 340.

Installation:

Check that drive belt is correctly positioned on pulleys.

Fig 2: Identifying Drive Belt Position

Courtesy of BMW OF NORTH AMERICA, INC.