I’d agree with John, that motor seems to run good. All can motors will get noisy with no load and high rpm. A couple other things to look at: Look at the sensor to encoder ring clearance. Both vertically & laterally, see if the encoder ring is making contact with the two sensor halves,….the flywheel has either a set screw, or two, ( can’t remember on that model ) adjust as necessary, but the sensor must remain danger close to the encoder ring. Next, put a drop of oil on the output shafts. Both sides!…you will need a needle applicator to get to the one under the flywheel. Lastly, if you hear the brushes squeaking inside the can, you can give them a tiny shot of contact cleaner to clear away the brush dust that can cause a squeak. Caution if you choose to do this step!…fully allow any cleaner to evaporate off before applying power to the motor…..truth be told, any minor brush squeak, certainly won’t hurt a thing, and to be sure the sound system would overcome that once the motor is back in the shell,….
Pat
