Thread Number: 42987  /  Tag: 50s/60s/70s Vacuum Cleaners
Electrolux 1205 motor wanted
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Post# 450001   2/10/2022 at 13:54 (778 days old) by Zenith12 (Canfield Ohio )        

The motor in my 1205 failed. The brushes arc a lot even after sanding the commutator so I think I need a motor.

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Post# 450002 , Reply# 1   2/10/2022 at 14:13 (778 days old) by Gvox (Georgia)        
I have one I've rebuilt

It has new brushes, I just want to replace the fan bearing to make it completely serviced.  It's not that the bearing is bad, I just want to go ahead and replace it while I have it apart.  

 

It sounds like you may have a short on commentator (maybe).  


Post# 450009 , Reply# 2   2/10/2022 at 19:03 (777 days old) by mjhoshaw (Western PA)        
Could the brushes be sticking?

In recent months I acquired both a late model L and a late 1205 which use the same motor with different mounting plates. In both of them the brushes were sticking causing excessive sparking and loss of power. A thorough cleaning of the brushes and brush holders with CRC QD Electronic Cleaner corrected the problem in both motors.

 

It's worth checking into before you replace the motor. I can't tell from your image, but if the commutator has an even appearance all the way around with no burnt-looking segments, the motor may not be bad.

 

Good luck.

 

Joel

 


Post# 450010 , Reply# 3   2/10/2022 at 19:19 (777 days old) by kirbylux77 (London, Ontario, Canada)        

kirbylux77's profile picture
Joel is correct on his assessment, the carbon brushes sticking could very well be a issue. However, I would also try reseating the carbon brushes and see if that helps. This could very well help since the problem started after sanding the armature.

If it is indeed the commutator going, there is a seller on Ebay, mickeymackmark1, who has the commutators for the early and late 1205 motors. So at least you could get one and take it into a Aerus dealer to have your motor fixed and get new carbon brushes installed too.

Rob

PS - For anyone reading this, DO NOT SAND YOUR MOTOR COMMUTATOR! Use a armature stick instead from your local vac shop. If you sand the commutator, it can ruin it by sandpaper grit getting stuck in the grooves. A armature stick will not only clean up the commutator, it will help the carbon brushes seat correctly and is much safer.


Post# 450012 , Reply# 4   2/10/2022 at 19:58 (777 days old) by Gvox (Georgia)        
There were two different commentators for the 1205.

The early motor had a short one, the later motor had a long shaft.  The seller mentioned above had both, but has since sold his short shaft.   The long shaft commentator didn't fit my 1205 motor, the short one did.  But my motor had the G brush holders which were brown.   The OPS looks like one of the two later motors built for the 1205, so maybe the long commentator he currently has listed would work.   

 

One thing to make sure of is that no carbon as built up between the commentators sections.  That could bridge electricity from one plate to the next.  Then there are problems on the windings, but usually you'd see signs of burning.   The best way to check is this...



Post# 450021 , Reply# 5   2/11/2022 at 16:25 (777 days old) by Zenith12 (Canfield Ohio )        
I tried all of those things

When I sanded the commutator I made shire that the gaps were clean. I have a armature growler . It does have 3 burnt com bars.

Post# 450022 , Reply# 6   2/11/2022 at 17:34 (777 days old) by Gvox (Georgia)        

Then that's your problem.  Disassemble the motor and remove the commutator.  Then look at the one for sale on ebay and see if it's a match.  

 

https://www.ebay.com/itm/254849846246QUE...

 

You should be able to tell by the picture. That particular commutator would not fit my 1205 motor, I have the short commutator.  There were three iterations of motors for the 1205.  Mine is the first, it is basically the G motor.  It has brown carbon brush holders, and brushes.  

 

OR if you feel handy you could probably fix your existing commutator.  Either rewind it, which sounds hard but it's not, or find the shorts and fix them.  

 

The principle is the same

 






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