12 31... Replacing alternator belt pulley
WARNING: This page is about a different car, the 2010 BMW X3, 2009 BMW X3, 2008 BMW X3, and 2007 BMW X3. However, it is still accessible from the selected car via links, so may be relevant.
Special tools required:
See 12 ENGINE ELECTRICAL SYSTEM
- 12 7 110
Remove and install alternator drive belt.
Depending on alternator type, grip shaft with:
- hexagon socket
- multi-tooth socket or
- Torx socket wrench
Release nut with special tool 12 7 110.
Installation:
Tightening torque: 12 31 2AZ / 12 31 3AZ, see 12 31 ALTERNATOR WITH DRIVE AND MOUNTING PARTS .
Special tools required:
See 12 ENGINE ELECTRICAL SYSTEM
- 12 7 121
- 12 7 122
Illustrations show N42:
If fitted, remove cover cap from belt pulley.
Depending on alternator type, slacken screw with:
- Torx socket wrench
- Slacken multi-tooth socket wrench (special tool 12 7 122 ).
Grip freewheel with special tool 12 7 121.
Installation:
Tightening torque: 12 31 8AZ, see 12 31 ALTERNATOR WITH DRIVE AND MOUNTING PARTS .
Remove alternator drive belt.
Release screw and if necessary remove freewheel.