Go to the following link. http://www.hescoinc.com/vacuum_clean.../royal.htmlYou will need to know your exact model number of the Dirt Devil Vision Turbo. Dirt Devil is made by Royal and so that is why you will find the diagrams under Royal Part at Hesco.You will need to know your exact model number. Scroll down until you find it. I found this one at Hesco listed as Dirt Devil Vision Turbo. Not sure if this is your model?http://www.elkypro.com/hoops2005/vac...0.htmlHowever, I see no external thermal device which means it is integral with the motor. So maybe this isn't your machine.Once you find the diagram for your machine, you can print it off using adobe!Why is this motor overheating??? Have you checked for broken or jammed brush roll belt? Clogged bags, filters, air passage tubes, etc. Something is causing that motor to overheat and shut down! If you have any problem with the diagram. Come back and post again and I will try to assist.AgedWisdom