11 28 020 Replacing Tensioning Device for Alternator Drive Belt (N63O1)

Special Tools Required: 

• 11 0 390 .

Necessary Preliminary Tasks: 

• Remove Alternator DRIVE BELT .

If Necessary, Remove Special Tool 11 0 390 .

Release Screw (1).

Tightening torque 11 28 1AZ .

Remove Belt Tensioner with Idler Pulley (2).

Fig 1: Identifying Belt Tensioner/Idler Pulley and Screw

Courtesy of BMW OF NORTH AMERICA, INC.

Assemble Engine.