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12 31... Replacing Alternator Belt Pulley

Special tools required:

12 7 110

Remove and install alternator drive belt.

Depending on alternator type, grip shaft with:

hexagon socket
multi-tooth socket or
Torx socket wrench

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)

Courtesy of BMW OF NORTH AMERICA, INC.