If your dryer drum not turning or the dryer not spinning, start with the most likely cause: a broken drive belt. Reach into the drum and turn it by hand—if it spins very easily the belt is probably snapped; inspect and replace the belt if needed. If the drum feels stiff, remove the belt and try turning the drum by hand again to check the drum rollers and roller axles; worn rollers or axles will make the drum hard to rotate and will overload the motor. Also inspect the idler pulley and blower wheel for a stuck bearing or an obstruction, since a seized idler or blocked blower can stop the drum from turning. A faulty timer can cause the drum to stop, but that is rare; only test or replace the timer after you have ruled out belt, rollers, axles, idler and blower issues by visual inspection and by turning the drum manually, and use a multimeter and wiring diagram to confirm a bad timer. Enter your model number on RepairClinic.com to find the exact replacement part for your dryer.
01 - Tappan Dryer Drive Belt
The drive belt is a very long, slender belt that wraps all the way around the dryer drum, around a tension pulley, and then around the drive motor pulley. Over time, the belt can break from normal use. If the belt is broken, the dryer won’t turn. To quickly determine if the belt is broken, reach into the dryer and turn the drum by hand. If the drum spins very easily, the belt is likely broken. Next, inspect the belt to confirm that it is broken. If the belt is broken, replace it.
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A dryer drum not turning could be caused by a faulty timer. However, this is very rarely the case. Before replacing the timer, check all the more commonly defective parts. If you determine that all of the other components are working properly, test the timer by using a multimeter and consulting the wiring diagram. If the timer is defective, replace it.
Most dryers have two drum rollers on the rear of the drum, and some dryers have two more rollers supporting the front of the drum. The rollers must spin freely to work properly. If the drum rollers are worn out, the dryer won’t turn properly. To determine if the support rollers are worn out, remove the belt from the dryer and try turning the drum by hand. If the drum does not rotate freely, check the support rollers for wear. If one or more of the rollers are worn out, we recommend replacing all of the rollers at the same time as a preventative measure. (The roller shaft can often be reused if it is in good condition. Clea...n the shaft thoroughly before installing the new rollers.)
The dryer blower wheel is the component that circulates the air through the dryer drum. Since the drive motor that rotates the blower wheel will often drive the belt that turns the drum as well, an obstructed blower wheel could prevent the drum from turning. Inspect the blower wheel and housing for any obstruction and replace the component if necessary.
One or more of the drum roller axles might be worn out. Most dryers have two drum support rollers on the rear of the drum, and some dryers have two more rollers supporting the front of the drum. The rollers must spin freely to work properly. If the roller axles are worn out, the rollers may not spin freely, causing the motor to overload and the dryer to stop. To determine if the drum roller axles are worn out, remove the belt from the dryer and try turning the drum by hand. If the drum does not rotate freely, check the support rollers for wear. If the rollers spin freely without wobbling, the axles do not need to be replac...ed. If a roller wobbles and/or does not spin freely, we recommend replacing all of the axles and rollers as a preventative measure.
Inspect the idler pulley for the dryer drum belt and make sure it spins freely on the shaft. If the idler pulley is stuck, worn or damaged, we recommend replacing the drum drive belt in addition to replacing the idler pulley.