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- #141
On either end of the motor, inside the motor, should be two bearings. One that supports each end of the rotating shaft.
what I’m telling you is based on generic motor design, not specific knowledge of the motor you are dealing with. Sometimes the bearings are plastic bushings, sometimes traditional bearings. The noise on the video sounds like a bearing failure to me. Often loud unusual noise from a fan motor are attributable to bearings. Due to age of the motor, that would be my leading suspect. The motor may not be a serviceable part, but often you can replace the bearings if you can access them.
hope this helps.
Thank you. Yes, I’ve resurrected quite a few of these old things and the blower motors rarely fail and noise is usually the squirrel cage being out of balance from rodents living in there or wasps or mud daubers. That’s a new noise for me though. I agree. Sounds like metal on metal.