11 28 050 Replacing A/C compressor drive belt (S65)

WARNING: This page is about a different car, the 2010 BMW M3, 2009 BMW M3, and 2008 BMW M3. However, it is still accessible from the selected car via links, so may be relevant.

IMPORTANT: Mixed installation of the assemblies is not permitted. Mixed installation will result in failure of the steering assistance.
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.
Different idler pulleys for c.c.w.- and c.w.-rotating power steering pumps.
Tightening torque: 11 28 1-2AZ . See 11 28 DRIVE BELT .

Necessary preliminary tasks:

Remove fan cowl with electric fan. See 17 11 035 REMOVING AND INSTALLING/REPLACING FAN COWL WITH ELECTRIC FAN (S65) .

IMPORTANT: Belt routing of clockwise-rotating power steering pump (see arrow).

Press down tensioning device (1) on damper in direction of arrow and hold.

Take off ribbed V-belt.

Installation:

Observe direction of rotation if reusing the drive belt.

Ensure drive belt is in correct installation position.

Fig 1: engine drive belt routing diagram with single-sided belt

Courtesy of BMW OF NORTH AMERICA, INC.

IMPORTANT: Belt routing of counterclockwise-rotating power steering pump (see arrow).
Double-sided ribbed V-belt.