11 28 020 Replacing tensioning device for alternator drive belt (N54, N54T)

Special tools required: 

• 11 3 340

Necessary preliminary work 

• Remove DRIVE BELT .

Remove special tool 11 3 340 .

Release screw on belt tensioner.

Tightening torque: 11 28 1AZ .

Fig 1: Turning Tensioner Pulley

Courtesy of BMW OF NORTH AMERICA, INC.

Assemble engine.