I just bought a 1952 Delta Unisaw. The saw itself needs minor work except the motor. The owner told me the motor brushes need to be replaced but I don't know where to go. I called Delta machinery (3 times) and never got a customer service rep to pickup the phone even after waiting for more than 20 minutes.

Well , the motor will start-up and run fine sometimes but sometimes it will just sit there and hum. From what I can see this motor does not have a starting capacitor, therefore that theory is out of the question.

Any of you have an older model Unisaw with this type of problems and if so what's your suggestion.

Please advise!