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Home >> BMW >> 2012 >> Alpina B7 >> Repair and Diagnosis >> Accessories & Equipment >> Gauges & Instrument Panels >> Engine Electrical System - Repair (N63) >> 1231 Alternator With Drive And Mounting >> 12 31... Replacing alternator belt pulley (with overrunning clutch) >> Notes

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

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: Releasing Nut With Special Tools (12 7 120)
G06888979Courtesy of BMW OF NORTH AMERICA, INC.