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Home >> BMW >> 2007 >> M5 GS653BZ >> Repair and Diagnosis >> Engine Performance >> Remove, Overhaul & Install >> Engine Electrical System - Repair >> Alternator With Drive And Mounting >> 12 31... Replacing Alternator Belt Pulley (With Overrunning Clutch)
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12 31... Replacing Alternator Belt Pulley (With Overrunning Clutch)

Remove and install alternator drive belt. Grip alternator shaft with: - internal serration

Release nut with special tools 12 7 120. Installation: Tightening torque, see 12 31 3AZ in 11 31 CAMSHAFT .

Fig 1: Release Nut With Special Tools 12 7 120
G00497520Courtesy of BMW OF NORTH AMERICA, INC.