Does anyone have a diagram of the dryer belt assembly? Also I just got done cleaning it extensively and wanted to know why the motor keeps going out. Before I took it apart it would work good for about 20-30 minutes. And then make a real loud noise and then shut off I figured it was because it was over heating and shut off to cool off.

Yes it probably is going bad. It overheats and shuts off to its internal overload. Once it cools down it resets and will run again for a short time. I believe you can go to Appliance Parts from RepairClinic.com - HomePage (http://www.repairclinic.com) or www.apliancepartspro.com and find a diagram. They also have the parts you need as well. God Luck