Generator (Gen) (2008-10): Design: Freewheel
Certain generators are equipped with a freewheel between the rotor shaft and the pulley. A pulley equipped with a freewheel, can be identified by the cover installed over the pulley nut in the center. Using the freewheel, the generator rotor shaft can only rotate freely in one direction. This minimizes any jerking in the belt transmission. For V8 engines, the generator is not equipped with freewheel.