11 28 025 Replace tensioning device pulley for alternator drive belt (N74)

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Necessary preliminary tasks:

Remove alternator DRIVE BELT

Remove pulley (2) protective cap.

Release screw (3).

Tightening torque: see 1AZ in 11 28 V-RIBBED BELT WITH TENSION AND DEFLECTION ELEMENT

Remove idler pulley (4).

Fig 1: Identifying Idler Pulley With Screw

Courtesy of BMW OF NORTH AMERICA, INC.

Assemble engine.