TERRIBLE SMELL FROM HOOVER CONVERTIBLE MOTOR!

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I just took another look at the motor, and, while there was no oil there, there was some smoky, sooty, ash-like substance on the armature and the end of the brushes. Does this change anyone's opinion, and how exactly should I clean it?
 
I must apologize for continuous complaints, but I must say that I have spent quite a while wiping the armature off with a dry cloth towel and I still cannot get the "ash" off the armature. Is the only option at this point to sand it or is there something else that I should do?
 
It sounds like what you're seeing is normal though. The area where the brushes come into contact with the armature will have a black/brownish film which acts as both a dry lubricant/conductor to reduce sparking. Can you post a pic though?
 
Looks normal to me, the shiny bits are where the brushes contact the commutator, and the dark bits are where the copper has oxidised from not having anything to wear it away... :)

If you saw a particularly deep cut into the commutator, like my Senior 652 had, then you have a problem, but that one there doesn't and looks fine to me, I wouldn't worry about it, the brushes are probably just in need of reseating, which happens anyway every time you use it for a while after motor work and putting one or both of the brushes in the wrong way round... :)
 
Well, the correct way is with a commutator cleaning stick, but if you've never done it that way before, it's another way to ruin a good motor, and potentially injure yourself in the process...

The simplest way though is to take the vac somewhere that the noise won't be a nuisance, take the bag off, raise the nozzle off the floor and just run it continuously for an hour, it may not get them seated 100%, but it's better than getting it wrong and having to start again, plus the brushes will eventually seat themselves fully the more you use it... :)
 
Looks fine. Don't worry about it. Just run it to seat the brushes and get rid of the smell.
 
Hoover Armature Help.......

So I picked up a Convertible last week. Sounded kinda rough, but I got it anyway because I believed it was a fixable issue.

Wrong, upon inspection of the armature, I discovered the shaft had worn right where it meets the bearing. Basically it is now cam-ed. Nothing I can do to fix it.

Does anyone have an extra armature they will part with. It is identical to the one pictured in this thread.

Please let me know. I would like to clear my work bench to work on two new vacuums.
 

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