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Home >> Mini >> 2010 >> Cooper S, 2D Hatchback, Standard >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 17 (Engine Electrical System - Repair - R55 (N12)) >> Alternator With Drive And Mounting >> 12 31... Replacing alternator belt pulley (with overrunning clutch)

12 31... Replacing alternator belt pulley (with overrunning clutch)

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Special tools required: 

Remove and install alternator drive belt.

Grip alternator shaft with:

Release nut with special tools 12 7 120. 

Installation: 

Tightening torque  12 31 3AZ.

Fig 1: Identifying Special Tools
G05476051Courtesy of BMW OF NORTH AMERICA, INC.