11 28 050 Replacing A/C compressor drive belt with belt tensioner (N62/N62TU)

WARNING: This page is about a different car, the 2010 BMW 550i, 2009 BMW 550i, and 2008 BMW 550i. However, it is still accessible from the selected car via links, so may be relevant.

Special tools required:

11 3 340 . See ENGINE- SPECIAL TOOLS .

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.

IMPORTANT: If contaminated with hydraulic fluid: Replace drive belt.

Put on the drive belt.

Remove special tool 11 3 340.

Fig 1: Identifying Special Tool (11 3 340)

Courtesy of BMW OF NORTH AMERICA, INC.

Installation:

Check that drive belt is correctly positioned on pulleys.

Fig 2: Identifying Drive Belt Correctly Positioned On Pulleys

Courtesy of BMW OF NORTH AMERICA, INC.