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AFCA Forums > Antique Fan Collectors Association > Pre-1950 (Antique) > Help please! Polar Cub brush maintenance

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Help please! Polar Cub brush maintenance  Rate Topic 
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 Posted: Sun Nov 22nd, 2020 05:26 am
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Mark McCormick
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Looking for help on how to remove the brush holders on a Polar Cub type G.   One brush was basically missing, the other is fine it seems.  But would really would like to remove the rotor so I can polish the commutator too.  So again are there any tips for backing out the brush holder (carefully) so that I can slide out the stator?  Thank you anyone who has ideas or experience.











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 Posted: Sun Nov 22nd, 2020 02:54 pm
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Steven P Dempsey
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Mark, I have never messed with carbon brushes - the one time I took one off an R&M 3600 I lost the spring & broke the brush!! Darryl had to make a new set for me.Good luck!

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 Posted: Mon Nov 23rd, 2020 03:10 am
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Alex Rushing
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Does your Polar Cub have the tabs bent over on the back? Two on each side that keep the holders mounted.
Bend the tabs out carefully and the holders should wiggle out. :)

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 Posted: Tue Nov 24th, 2020 05:20 am
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Mark McCormick
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Thank you for the feedback Alex.   I had a hunch that was the trick but wanted to make sure 

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 Posted: Tue Nov 24th, 2020 05:21 am
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Mark McCormick
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If one spring is shorter (see pic) - could that lead to uneven brush wear.  I swear only only one brush came out. 

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 Posted: Tue Nov 24th, 2020 01:28 pm
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Steven P Dempsey
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Darryl can make a set of matching springs & brushes, I had to do that for one

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 Posted: Tue Nov 24th, 2020 01:32 pm
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Steven P Dempsey
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Open commutator facilitates cleaning! A bit of fine sand paper while running . . . it does help the fan to run when that oxidation, carbon is cleaned off. (I think these brushes are normally wired underneath for aesthetics)


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 Posted: Wed Nov 25th, 2020 02:40 pm
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Mark McCormick
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Steve - thanks for the tips!!:hammer:

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 Posted: Wed Nov 25th, 2020 02:47 pm
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Steven P Dempsey
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I figure if you have that apart, might as well clean it up! I admire your efforts, the last fan like that I took apart (6" GE) I gave up!!

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 Posted: Thu Nov 26th, 2020 12:57 am
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Alex Rushing
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Mark McCormick wrote: Thank you for the feedback Alex.   I had a hunch that was the trick but wanted to make sure Anytime! Ironically I just took in a Polar Cub with the ornate base, but sticker badge instead of the brass on ours. Gotta make a brush holder cap and new studs for it. Stuck a drill bit in the open brush side and it started, so good bones. haha

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 Posted: Thu Nov 26th, 2020 01:40 am
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Steven P Dempsey
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This 8" R&M needs some TLC with the brushes - - -

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 Posted: Thu Nov 26th, 2020 01:53 am
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Steven P Dempsey
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Sometimes I see excess "arcing" from the bushes.

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 Posted: Thu Nov 26th, 2020 02:43 am
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Alex Rushing
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Steven P Dempsey wrote: Sometimes I see excess "arcing" from the bushes.Might try just slightly stretching the springs. Arcing and sparking usually mean a dirty Commutator or poor brush pressure. But, there is a sweet spot of pressure. To much and the brushes/commutator wear to quickly, and to little the sparks fly and conductivity isn't good.

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