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Author Topic: DC20 motor replacement  (Read 795 times)

Offline ggloria007

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DC20 motor replacement
« on: July 20, 2023, 04:58:06 pm »
Our DC20 (361-UK-A 34007) stopped working this weekend.  It has been working over 14 years, still great suscion.
When it stopped working there was a very strong burning smell.
Replaced both filters, still not working. The motor hepa was black - assumed the motor or carbon brushes burned out. Attempted to look for the motor, realised it needed different screwdriver, went to B&Q to buy a torx screwdriver... finally mananged to open up the housing and find a motor number.
Followed a very usefull video:
It is for DC19 but it looked very simialr to my DC20 so i followed the steps and managed to suceed in "openinig"

The old motor has a specific number 
YDK   YV-16K 24C   7L08 24V
I can find similar original Dyson motors on internet including
YDK   YV-16K 24C  but
the last line of the specification "7L08 24V" is not matching ...
Is it very important to match?

On ebay non original options quoting complience with YDK   YV-16K 24C no mention of the last line of the spec.
some of the products say it is premium, some with TOC, some with Thermal break, some with Cut-Out...
well i am really stuck what to buy...
As you can see by this post I am persistant and like small projects like this repair but I am faced with the fact that my knowledge is limited...
Could you please advise.
Thank you Gloria


Offline MVacs

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Re: DC20 motor replacement
« Reply #1 on: July 21, 2023, 12:50:29 pm »
As long as it is a YDK cylinder motor, it will be fine. YV-16K is a standard DC05-DC21 motor. Ours is >here< (ours currently have an internal TOC).

However, most of the aftermarket motors around at the moment are all pretty similar quality, apart from the very cheap ones on eBay/Amazon. Internal or external TOC/cut out doesn't really matter.

Offline ggloria007

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Re: DC20 motor replacement
« Reply #2 on: July 21, 2023, 06:16:55 pm »
Thank you so much for your reply. Just before I make a purchase, I wonder if you could let me know ... if I install the new motor and the hoover still does not work what else could be wrong with it... how will.i know if the motor is definitely broken ?? Ta

Offline MVacs

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Re: DC20 motor replacement
« Reply #3 on: July 25, 2023, 04:05:05 pm »
You need to bench test the existing one and/or check the feed to it before purchase.

Often you can tell by looking at the armature. If its black, burned, and scored, its had it. If its shiny and copper coloured, investigate more and do as above.

Offline ggloria007

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Re: DC20 motor replacement
« Reply #4 on: July 26, 2023, 09:27:44 pm »
thank you. it is black and sooty, my sister brought the new motor and we have a working hoover...! hurayyy!!! it does smell of a burning rubber still and I assume it is becasue of some soot has been leaft in the motor housing... I am hoping this burning smell will disaper over time... Am I right? ta

Offline MVacs

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Re: DC20 motor replacement
« Reply #5 on: July 27, 2023, 12:37:41 pm »
Well, you're supposed to clean them out as you are fitting it you know.  :whist11:

But yes, that should fade away.  :icon_nod:

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