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Generator (Gen) (2001-2004): Design: Freewheel

Fig 1: Identifying Freewheel Generator
GLL103081Courtesy of VOLVO CARS OF NORTH AMERICA.

Certain generators are equipped with a freewheel between the rotor shaft and the pulley. The cover over the pulley nut in the center of the pulley indicates whether a freewheel is installed. Using the freewheel, the generator rotor shaft can only rotate freely in one direction. This means that any jerking in the belt transmission is minimized.