I replaced my 2401 brushes on the motor when the whole thing stopped and it now works fine. It was about 7 years old when the brushes simply wore out. When the brushes on the motor wear out the motor just doesn't work and the whole machine stops. The motor overall was OK, it just needed new brushes. I bought a capacitor too, but it turned out I didn't need one.
Paul in Hawaii, November 2009