appbaffled
Most likely the problem with your dryer is a bad motor. It's overheating and the overload protector shuts off the power to the start winding. After it cools down and power restores it works again till next overheating. In such situation the motor has to be replaced. The part number for the new motor is
AP3094245 . If you need an instructions how to replace it I'll be glad to help you.
Good luck.
Gene.