12 31... Replacing alternator belt pulley (with overrunning clutch)
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.
Special tools required:
- 12 7 120
Remove and install alternator drive belt. Grip alternator shaft with:
- internal serration
Release nut with special tools 12 7 120.
Installation:
Tightening torque 12 31 3AZ.