If when you start your Performa electric dryer the drum is not tumbling or is not tumbling at the right speed, you will need tom check the following parts.
The belt: The dryer use a very skinny belt that is about 1/4 of an inch wide to turn the tumbler or drum. With the age and usage of the dryer the belt tend to get stretched and this could cause it to slip and turn the drum at a slower speed. Sometimes when the belt is stretched is not able to turn the drum at all. So after many years of use, you should replace the belt.
The Idler pulley: If the problem with your Performa electric dryer is that is not tumbling properly or is making a lot of squeaking noises. The problem could be a bad idler assembly or idler pulley.
The typical idler assembly was made of a metal bracket and a roller. Since the roller turns with the belt, there is not much friction between the belt & the roller. The only problem with this type of idler assembly is that the plastic roller hole in the center wears out and the roller won't turn properly and makes noises.
When I encounter the idler pulley with a worn out roller that is making noises, I always replace it with a new one.
The drum support rollers: If the problem with your Performa electric dryer is that is making clanking noises, and the drum seems to be out of place with a gap between the drum and that back panel. The problem could be worn out drum rollers.
These washers use two drum support rollers on the back drum support panel.
These rollers have a metal bushing on the center of the rollers. The metal in the bushings is a softer metal than the metal on the rollers shaft. The purpose of this is for the bushings on the rollers to wear out instead of wearing the shafts.
When the shafts eat all the metal on the rollers bushings, the rollers start to ride on the plastic and makes a lot of noises. To see how to check & replace the drum rollers in a Performa electric dryer, view the video below.
Drum front glides: These glides or slides are used for the drum to slide on them. With time and use they wear out and the drum starts to rub metal to metal and the dryer becomes noisy.