Dyson & Sebo Vacuum Cleaner Repair & Advice Forums

Dyson Models => Second Generation "The Ball" Dysons. => Topic started by: Ray1000 on April 15, 2018, 12:02:52 AM

Title: DC 40 Brush bar stops as the handle tilts backwards
Post by: Ray1000 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
Title: Re: DC 40 Brush bar stops as the handle tilts backwards
Post by: ryevac 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
Title: Re: DC 40 Brush bar stops as the handle tilts backwards
Post by: Ray1000 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
Title: Re: DC 40 Brush bar stops as the handle tilts backwards
Post by: MVacs 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 (https://manchestervacs.co.uk/DysonForum/index.php/topic,1190.0.html).
Title: Re: DC 40 Brush bar stops as the handle tilts backwards
Post by: ryevac 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.
Title: Re: DC 40 Brush bar stops as the handle tilts backwards
Post by: MVacs 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:
Title: Re: DC 40 Brush bar stops as the handle tilts backwards
Post by: Ray1000 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
Title: Re: DC 40 Brush bar stops as the handle tilts backwards
Post by: Ray1000 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
Title: Re: DC 40 Brush bar stops as the handle tilts backwards
Post by: Ray1000 on April 26, 2018, 02:10:36 AM
It's the yoke loom - a common design fault. There is a topic in the stickies here: Dyson DC40 Brushbar Not Turning (https://manchestervacs.co.uk/DysonForum/index.php/topic,1190.0.html).


Thank you for that ... I have read the topic you suggest but would still benefit from knowing where on the machine the broken wire is.
Thank you
Ray
Title: Re: DC 40 Brush bar stops as the handle tilts backwards
Post by: MVacs on April 26, 2018, 04:58:46 PM
Look at the black and white wire in the third picture down >>here<< (https://manchestervacs.co.uk/DysonForum/index.php/topic,3166.msg26649.html#msg26649).

That's it. 
Title: Re: DC 40 Brush bar stops as the handle tilts backwards
Post by: Ray1000 on May 29, 2018, 12:07:56 AM
Ryevac and MVacs ... you were exactly right ... we continued using the vacuum cleaner in the until the brush stopped and wouldn't start ... the white wire was broke in two.

During the repair I inadvertently removed the screw from the clear cog and have lost the position.

Could you explain how to re-position it. The fact it moves with the tilt of the machine I need two reference points to position it properly.

Thank you
Ray
Title: Re: DC 40 Brush bar stops as the handle tilts backwards
Post by: ryevac on May 29, 2018, 11:45:13 PM
I can't remember off top of my head, however i have a dc41 to go out to tomorrow with same suspect fault so will refresh then.
Title: Re: DC 40 Brush bar stops as the handle tilts backwards
Post by: Ray1000 on May 31, 2018, 12:06:50 AM
Thank you
Trev

Ray
Title: Re: DC 40 Brush bar stops as the handle tilts backwards
Post by: ryevac on May 31, 2018, 02:06:58 AM
I think the dc40 is a little different to the 41 but will photograph it before and after

I didn't do mine on site as i had another job to go to and didnt want to put myself under pressure, will be doing it tomorrow am i think.

Should really photograph them beforehand if in doubt, i do as my memory is fading with age....
Title: Re: DC 40 Brush bar stops as the handle tilts backwards
Post by: ryevac on May 31, 2018, 06:08:30 PM
bugger, been a while since i did a 40 / 41 ray.
My 41 today revealed head motor fault so didnt strip main ball assembly apart from sides removal, and its different anyway.
Not able to help in this case, if you have a look on previous posts i think beko covered it on a strip / rebuild ?
Title: Re: DC 40 Brush bar stops as the handle tilts backwards
Post by: Ray1000 on May 31, 2018, 08:17:18 PM
Thank you for keeping me in mind Trev,

I found the solution a few minutes ago and will post the detail later.

Ray
Title: Re: DC 40 Brush bar stops as the handle tilts backwards
Post by: ryevac on May 31, 2018, 10:19:49 PM
ok Ray, Had a right mare with the first one i did a couple of years ago
Title: Re: DC40 Position of the Clear Cog
Post by: Ray1000 on May 31, 2018, 10:45:23 PM
I had inadvertently removed the screw from the clear cog while repairing a broken wire to the brush roller.

In fact it didn't matter that the screw had been removed ... you can get the cog out of position with the screw in place.

The key to the position lies with the cog having six teeth which mesh with the six teeth on the machine.

It is just a matter of having the left hand tooth on the cog in the left hand slot on the machine ... in this position the lug on the cog lands against the stop at the end of its travel.

I'm sure you will have all been doing this without thinking ... I probably made it sound more worse by pointing out I had removed the screw.

Ray
[attachimg=1]
Title: Re: DC 40 Brush bar stops as the handle tilts backwards
Post by: ryevac on June 01, 2018, 03:29:46 PM
 :thumbsup:
Title: Re: DC 40 Brush bar stops as the handle tilts backwards
Post by: Ray1000 on June 24, 2018, 11:52:25 PM
Now Solved ... Just to finish this off ... I only stripped it down far enough to find the broken wire which was repaired by inserting a 2" length of similar wire.

[attachimg=1]

[attachimg=2]

[attachimg=3]

The Machine has worked perfectly well since

Thanks again for your help

Ray

Title: Re: DC 40 Brush bar stops as the handle tilts backwards
Post by: MVacs on June 25, 2018, 05:31:30 PM
We tend to find repairing them doesn't last that long, Ray. But you may have more luck.

Great follow up and pics.  :thumbsup:
Title: Re: DC 40 Brush bar stops as the handle tilts backwards
Post by: Ray1000 on June 25, 2018, 10:18:11 PM
I fully understand ... as we speak the other wire may be ready to break  :( ... at least now I know what to expect.

Ray
Title: Re: DC 40 Brush bar stops as the handle tilts backwards
Post by: Parwaz7862 on June 29, 2018, 04:18:07 PM
The new wiring looms are more flexible compared to the older stiffer wires, they should last longer :thumbsup:
Title: Re: DC 40 Brush bar stops as the handle tilts backwards
Post by: ryevac on June 30, 2018, 12:00:17 AM
fixed quite a few cables in the earlier models, most failed.
It really isn't cost effective labour vs part cost, i always liberally spay silicone into the channel the cable sits in to reduce resistance.