Thermax Purchased in 2004/replacement foot motor

Question

The part #5409-33 it says ametek -120v 60hz.It is the motor that turns the roller that beats the dirt out of the carpet. I tried the phone # for the man that sold it to me. The number is no good. Can't seem to find anyone els that can help. Even if we can just find a motor that will change out. Hope you can help.....