The dryer’s idler pulley is essential in rotation of the dyer’s drum, why, the pulley keep tension on the dryer belt.
This Idler pulley has tension on the belt.
Pictured to the right is the idler pulley with the belt and drum removed.
Notice the pulley leans forward with the belt in place. The slots on the dryer frame lock the pulley into place, once the belt is in place.
Pictured here, dryer Idler pulley in lock position, notice the tabs on the side, they lock into the cut out pictured here.
Pictured to the right, dryer idler pulley on side. Take note of the small metal tabs on bottom side, they keep the pulley in position preventing it from pushing back.