Replace the belt tensioner

Preliminary work 

• Refer to DISCONNECTING ALL BATTERY GROUND LEADS .
• Refer to REMOVING THE ACOUSTIC COVER .
• Refer to REMOVING INTAKE PORT .
• Refer to REMOVING INTAKE SILENCER HOUSING .
• Refer to REMOVING CROSS CONNECTION .
• Refer to REMOVING TANK VENT VALVE .
• Refer to REMOVING THE SERVOMOTOR FOR THE ECCENTRIC SHAFT .
• Refer to REMOVING THE INTAKE PLENUM .
• Refer to REMOVING FRONT RIGHT WHEEL .
• Refer to REMOVING THE FRONT RIGHT WHEEL ARCH COVER .
• Refer to REMOVING THE WASHER FLUID RESERVOIR PARTIALLY .
• Refer to IF INSTALLED: REMOVING THE RIGHT BRAKE VENTILATION DUCT .
• Refer to REMOVING DRIVE BELT .
• Refer to REMOVING THE ALTERNATOR .

• Loosen screws (1)  .
• Guide out the belt tensioner (2)  at the alternator and remove.

  Courtesy of BMW OF NORTH AMERICA, INC.

• Replace the belt tensioner.

  Parts:  Belt tensioner

• Guide the belt tensioner (2)  in at the alternator and install.
• Tighten down screws (1)  .

Courtesy of BMW OF NORTH AMERICA, INC.

Follow-up work 

• Refer to INSTALLING THE ALTERNATOR .
• Refer to INSTALLING DRIVE BELT .
• Refer to IF INSTALLED: INSTALLING RIGHT BRAKE VENTILATION DUCT .
• Refer to INSTALLING WASHER FLUID RESERVOIR .
• Refer to INSTALLING THE FRONT RIGHT WHEEL ARCH COVER .
• Refer to INSTALLING THE FRONT RIGHT WHEEL .
• Refer to INSTALLING THE INTAKE PLENUM .
• Refer to INSTALLING THE SERVOMOTOR FOR THE ECCENTRIC SHAFT .
• Refer to INSTALLING THE TANK VENT VALVE .
• Refer to INSTALLING CROSS CONNECTION .
• Refer to INSTALLING INTAKE SILENCER HOUSING .
• Refer to INSTALLING INTAKE PORT .
• Refer to INSTALLING ACOUSTIC COVER .
• Refer to CONNECTING ALL BATTERY GROUND LEADS .