Ribbed Belt Pulley With Freewheel, Checking

Procedure 

• The ribbed belt pulley with freewheel is removed. Refer to RIBBED BELT PULLEY WITH FREEWHEEL, REMOVING AND INSTALLING .

-- Hold the inner ring -2- on the ribbed belt pulley with one hand using the thumb and index finger and the outer ring -1- with the other hand using the thumb and index finger.

Fig 1: Identifying Belt Pulley Ring

Courtesy of AUDI OF AMERICA, LLC

-- Hold the inner ring tight and turn the outer ring in the rotation direction of the generator.

• If the free-running hub is intact, the outer does not turn.

-- Hold the inner ring tight and turn the outer ring opposite the rotation direction of the generator.

• If the free-running hub in intact, the outer ring turns with slight resistance.

Replace the ribbed belt pulley if the free-running hub does not function as described.