12 31... Replacing alternator belt pulley: Notes

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 .

Fig 1: Griping Freewheel Using Special Tool (12 7 121)

Courtesy of BMW OF NORTH AMERICA, INC.

Remove alternator drive belt.

Release screw and if necessary remove freewheel.