12 31... Replacing alternator belt pulley
WARNING: This page is about a different car, the 2013 BMW X5, 2012 BMW X5, and 2011 BMW X5. However, it is still accessible from the selected car via links, so may be relevant.
Special tools required:
- 12 7 121
- 12 7 122
- 12 7 123
Necessary preliminary tasks:
- Remove drive belt.
Procedure with special tool 12 7 121.
Illustration shows N42:
If fitted, remove protective cap from belt pulley.
Depending on the alternator version, hold down alternator axis with:
- Torx key
- Hold inner multi-wrench tool (special tool 12 7 122).
Release freewheel with special tool 12 7 121 and remove.
Installation note:
Tightening torque: 12 31 8AZ .
Procedure with special tool 12 7 123.
Depending on the alternator version, hold down alternator axis with:
- Torx key
- Hold inner multi-wrench tool (special tool 12 7 122).
Release freewheel with special tool 12 7 123 and a ring spanner and remove.
Installation note:
Tightening torque: 12 31 8AZ .