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Home >> BMW >> 2009 >> 135i 2D Convertible, Automatic >> Repair and Diagnosis >> External Pages >> Different car >> Section 971 (Engine Electrical System - Repair (N51)) >> Alternator With Drive >> 12 31... Replacing Alternator Belt Pulley (With Overrunning Clutch) >> Special Tools Required

Special Tools Required

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Remove and install alternator drive belt.

Grip alternator shaft with:

Release nut with special tools 12 7 120  .

Installation: 

Tightening torque, see 12 31 3AZ in  12 31 ALTERNATOR WITH DRIVE AND MOUNTING PARTS  .

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