11 28 050 Replacing Drive Belt For A/C Compressor (S85)

WARNING: This page does not describe the selected car, but rather 10 other vehicles, including the 2010 BMW M6, 2010 BMW M5, 2009 BMW M6, 2009 BMW M5, and 2008 BMW M6. However, it is still accessible from the selected car via links, so may be relevant.

IMPORTANT: Mark the direction of rotation of the drive belt if it is to be reused.
Replace the drive belt if it is fouled with coolant or engine oil.

Necessary preliminary tasks:

Remove fan cowl with electric fan. See 17 11 035 REMOVING AND INSTALLING/REPLACING FAN COWL WITH ELECTRIC FAN (M5) or 17 11 035 REMOVING AND INSTALLING/REPLACING FAN COWL WITH ELECTRIC FAN (M6) .

Press down tensioning device (1) with ratchet in direction of arrow.

Remove ribbed V-belt (2).

Installation:

Observe direction of rotation if reusing the drive belt.

Ensure drive belt is in correct installation position.

Fig 1: Pressing Down Tensioning Device With Ratchet

Courtesy of BMW OF NORTH AMERICA, INC.

Assemble engine.