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Author Topic: DC 40 Brush bar stops as the handle tilts backwards  (Read 399 times)

Online Ray1000

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DC 40 Brush bar stops as the handle tilts backwards
« on: April 15, 2018, 12:02:52 AM »
This is my first post ... I imagine the answer is already on the forum but I haven't yet found it.
The brush bar starts spinning as it should, and stops as the handle is tilted back to about the 2 o'clock position. It remains stood for the rest of its travel.
It restarts as the handle is lifted back to that precise point ... it will do this as regular as clockwork, it never varies.
Any help would be much appreciated. You won't be able to over explain it as I'm not familiar with the names of the individual components.
Thank you very much
Ray

Online ryevac

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Re: DC 40 Brush bar stops as the handle tilts backwards
« Reply #1 on: April 15, 2018, 02:08:17 AM »
I could be yolk loom break, or brush switch.
Micro switch could have a blind spot on its internal contact, the cam could have a problem re it's spring but i would say yolk loom even though you say it's always in a certain position.
I personally never had a switch fail on this model, in fact i never had a switch fail on the 24,25,40 or 41
Have a good read of Beko's post.
https://manchestervacs.co.uk/DysonForum/index.php/topic,3166.0.html
If it was assembled it can be disassembled - if we can't repair it then it probably isn't worth repairing !

Online Ray1000

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Re: DC 40 Brush bar stops as the handle tilts backwards
« Reply #2 on: April 15, 2018, 01:45:51 PM »
Thank you, if being in the same position when it stops is significant when it comes to it being a broken wire in the loom ... it stops and starts in the same position even when the machine is on it's side ... either side.
Ŕay

Online MVacs

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Re: DC 40 Brush bar stops as the handle tilts backwards
« Reply #3 on: April 15, 2018, 04:32:04 PM »
It's the yoke loom - a common design fault. There is a topic in the stickies here: Dyson DC40 Brushbar Not Turning.

Online ryevac

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Re: DC 40 Brush bar stops as the handle tilts backwards
« Reply #4 on: April 15, 2018, 05:11:13 PM »
Yes i would say the cable has snapped but part of the insulation is still joined, and acting as a hinge for the break in the cable.
If it was assembled it can be disassembled - if we can't repair it then it probably isn't worth repairing !

Online MVacs

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Re: DC 40 Brush bar stops as the handle tilts backwards
« Reply #5 on: April 15, 2018, 05:20:59 PM »
Yes i would say the cable has snapped but part of the insulation is still joined, and acting as a hinge for the break in the cable.

Aye, they do that.  :icon_nod:

Online Ray1000

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Re: DC 40 Brush bar stops as the handle tilts backwards
« Reply #6 on: April 16, 2018, 11:42:38 PM »
Thank you very much, I shall have a read and no doubt be back with a question or two

Ray

Online Ray1000

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Re: DC 40 Brush bar stops as the handle tilts backwards
« Reply #7 on: April 17, 2018, 10:22:29 PM »
Thank you for your help so far ... I still haven't explored where the suspected broken wire might be, the close up pictures in the other threads don't give any indication to someone who has never seen the inside of one. To all you experts I can understand how it might all sound straightforward.
What I could do with is someone explaining where the wire is located ... what needs removing before you can see it ... and what needs removing to change or repair the wire.

Ray

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