gazdkw82

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Aug 2, 2013
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I have owned a kirby for the last 10 years and love it. Iv replaced a few parts in the past as they are generally maintenance friendly. However, the machine started making a strange rattling noise the other day. Took it apart and noticed the commutator is missing a tooth and look very warn. I'm guessing the brushes have warn out too.

My question is, how easy is it to repair this sort of thing? You can buy the motor assembly with new commutator etc but they are nearly £100. More than I'm willing to spend.

Any help would be appreciated
 

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Nearly £100 doesn't sound to bad for a motor given that Kirby vacuum cleaners usually come at a stupidly expensive price that makes anything else on the market look cheap. I doubt a motor rewind shop would repair it for less than that so the question then is how much would you spend on a new vacuum cleaner
 
Don't know which model yours is, but the going rate for working used domestic motors on fleabay seems about £33
eg
 
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Technically, as @telectrix indicates, you probably just need a new armature and a pair of brushes. But if speed of repair is important and you can get a motor at a good price it is easier to swap the whole thing.

Before the advent of throw-away appliances it was routine to change a vac armature rather than a complete motor and repair shops would keep the common types in stock. In the museum stores I actually have a few dozen spare armatures for various things, although not Kirby vacs.

Commutators have 'segments' (or 'bars' especially when referring to larger ones) rather than teeth.
 
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Technically, as @telectrix indicates, you probably just need a new armature and a pair of brushes. But if speed of repair is important and you can get a motor at a good price it is easier to swap the whole thing.

Before the advent of throw-away appliances it was routine to change a vac armature rather than a complete motor and repair shops would keep the common types in stock. In the museum stores I actually have a few dozen spare armatures for various things, although not Kirby vacs.

Commutators have 'segments' (or 'bars' especially when referring to larger ones) rather than teeth.

Thanks. Im not that familiar with motor terminology.

I think I might just have to suck it up and get a replacement assembly. Like you say, it can be repaired but I dont have the knowledge or parts to be able to do it.
 

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gazdkw82

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If you're a qualified, trainee, or retired electrician - Which country is it that your work will be / is / was aimed at?
United Kingdom
What type of forum member are you?
Electrical Engineer (Qualified)

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Kirby vacuum motor repair
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Electrical Appliances & Whitegoods Forum
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