Thank you for all of the great responses! No, my grandpa is not going to replace the vacuum. If the motor dies, then we will just purchase a new motor. I can do the repair very easily, as I have worked on many, many vacuums. I am assuming that the Ametek Motor is comparable to the genuine Oreck motor? At this rate, I think that we will just use it until the motor dies, and then replace the motor, as the original motor still works fine, but is having odd behavior. Thank you for all of the great responses!