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Home >> BMW >> 2006 >> M5 >> Repair and Diagnosis >> Engine Performance >> Ignition System >> Engine Electrical System - Repair >> Alternator With Drive And Mounting >> 12 31... Replacing Alternator Belt Pulley
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12 31... Replacing Alternator Belt Pulley

Special tools required: 

Remove and install alternator drive belt.

Depending on alternator type, grip shaft with:

Release nut with special tool 12 7 110.

Installation: 

Tightening torque. See ENGINE ELECTRICAL SYSTEM - TIGHTENING TORQUES .

Fig 1: Identifying Special Tool (12 7 110)
G04740393Courtesy of BMW OF NORTH AMERICA, INC.