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Author Topic: How To - DC25 Yolk Loom Replacement  (Read 11459 times)

Offline beko1987

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How To - DC25 Yolk Loom Replacement
« on: February 21, 2015, 11:53:52 AM »
I've heard of the loom breaking up, there have been many threads here on the subject, but, last week my first one came in! Dead brushroll housing. I look at the loom first now as it's the easiest thing to start with, and sure enough, the white wire was snapped.

For a quick diagnosis, with the PLUG OUT OF THE WALL I stripped each end of the wire, twisted it together, wrapped it in electrical tape and voila, one perfectly working brushroll. I suggest you try this is you are competent enough, as it could save you money chasing faults around. The PCB and/or Motor could have gone pop as well, you never know!

Diagnosed, I need a new yolk loom.

So, INGREDIENTS:

1 Yolk Wiring Loom - Only available here! - DC25 Yoke Loom Assembly

1x T-15 Torx driver available here: T15 Torx Screwdriver

METHOD:

Remove the cyclone and brushroll housing (can remove the wand and hose if it helps you!)



Tilt the machine so this cover looks at you (and questions your pint)



Remove the three screws





You will see my repair to the bottom white wire

Remove the white and red bottom wires (of the yolk loom) from the housing.



To aid getting the red wire out of the brushroll switch, the switch housing simply pulls away from the chassis. You want to remove the right hand side wire (as you look at it) and feed the cable and connector out of the hole at the bottom



Job done, remove the silver screw





Over to the other side now. Remove the side hose by levering it off the housing either end (if yours is split as they sometiems do, you need this - Dyson DC25 Duct Hose)



once off, remove the screw beneath



and remove the cap that holds the ball on square



Next, pull the chassis outwards, and the ball will wriggle out of the wiring side. On the other side, pull the chassis out enough to enable the ball axle to clear the housing and swing outwards slightly



You now need to unplug some wires

The top wire is Black to White. With a small flatblade, lever the spade terminals out of the housing from the top or bottom edge. To seperate, push the locking tab of the connectors in from the back with your screwdriver, adn they will seperate with ease



Do the same with the bottom wire, which is White to White/Blue

Once the wires are unplugged, the ball should drop away from the white ring



Pull the yolk off the ball



This is the back of the loom housing that we are replacing. Remove the three screws



Pull up from the screw location area, then pull the end of the loom housing out of the yolk and voila



Take your new part from Mvacs





Feed the wires through the hole, then push the end of the loom housing in. The screws end should then fit into place



Refit the three screws. Then, fit the yolk back onto the ball. I find putting the axle end in first, then sliding the yolk over the other edge the easiest. There is a bit of give in the yolk ends to help with this



Then, refit the ball to the machine:
Fit the duct hose side first, so the ball axle and yolk housing locate in that side first
Bring the other side of the ball close to the housing
Fit the white cable ring into the ball housing
Re-fit the two cables, and ensure the conenctors are locked back ionto place, and the cables channeled away. Check the wires have not pulled out of the chassis further up, if they have, tuck those back in too.
Push the ball hosuing back under the chassis so the 3 locating nubs of the motor hosuign seal locate in the holes of the chassis.
Fit the silver screw
Check all the cables again!



Refit the locating plug and screw on the other side



refit the bellows



Refit the cyclone, brushroll and anything else you took off and test!

Job done, put it into vacuum corner for collection!

Collector and restorer of vintage vacuums, Dyson Appreciator! Come and see my blog, where I am uploading all my mountains of brochures, manuals and other vacuum cleaner paperwork, and also my youtube channel @beko1987!

Offline MVacs

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Re: How To - DC25 Yolk Loom Replacement
« Reply #1 on: February 21, 2015, 12:31:40 PM »
Brilliant tutorial, another sticky!  :bow:

Online macman

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Re: How To - DC25 Yolk Loom Replacement
« Reply #2 on: February 21, 2015, 12:31:56 PM »
Excellent post beko.
Presumably the same sequence can be adapted for a motor replacement,  i. e. remove ball from yoke,  and then open the ball to access the motor?  That's  a procedure I've been wondering about. Is access to the motor straightforward once the ball is removed?

Offline beko1987

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Re: How To - DC25 Yolk Loom Replacement
« Reply #3 on: February 21, 2015, 12:43:14 PM »
Yep,  when the Yolk comes off the ball,  take the filter cover off,  remove the 4 screws then the ball comes off.

4 more screws and the motor bucket comes apart.  Take note of the way the rubbers sit.
Collector and restorer of vintage vacuums, Dyson Appreciator! Come and see my blog, where I am uploading all my mountains of brochures, manuals and other vacuum cleaner paperwork, and also my youtube channel @beko1987!

Offline bluetoaster

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Re: How To - DC25 Yolk Loom Replacement
« Reply #4 on: November 05, 2015, 03:22:59 AM »
Hi beko1987,
I am really happy I have found your tutorial.

I have split wires also and have temporary insulated the red and white wires to check if the motor head has gone, like in your tutorial.
I had already bought a new motor head, so I put the new one on only to find the hoover still works but the motor head does not.
Could this be the PCB or am I missing anything else like switches or reset switches or anything.

Your help will be most appreciated.

Regards

bluetoaster  :thumbsup:

Offline beko1987

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Re: How To - DC25 Yolk Loom Replacement
« Reply #5 on: November 05, 2015, 12:55:37 PM »
Hi Mr Toaster.

When you say a new cleanerhead, I presume you mean the whole head, brushroll, motor and pcb? If it's brand new then I doubt the problem lies there.

Do you have a multimeter to check that the repaired yolk wires are still working? I did a temp repair to a DC15 in the same way a while ago to tide someone over through a house move, and it took 3 goes before it worked, the wires are so thin, and under so much flex that it can fail or have never worked at all, I'd want to make sure that they were 100% working first.

Have you turned the machine on, reclined it and pressed the brushroll switch a few times to check that's not turned off?

On a DC25, there is no reset switch like a DC24, just the brushroll on/off switch, then that yolk loom, then the brushroll head PCB and motor, but if their brand new I cant imagine it would be those. If you had a multimeter you could take the cover off the brushroll housing, unplug the motor wires from the PCB, then (being careful) fit the head to the machine, recline, turn on and measure the voltage coming out of the 2 motor wire pins from the PCB, can't quite remember the voltage it would show, 300v iirc, but you should get something at least.

I'd double check the repaired yolk loom wires first tbh, or splash out on a new loom just to be sure. It's the weakest link on your setup that I can see so far.
Collector and restorer of vintage vacuums, Dyson Appreciator! Come and see my blog, where I am uploading all my mountains of brochures, manuals and other vacuum cleaner paperwork, and also my youtube channel @beko1987!

Offline Tech12

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Re: How To - DC25 Yolk Loom Replacement
« Reply #6 on: November 05, 2015, 02:33:11 PM »
Take the cleaner head off. At the pins on the body of the machine,  where it connects to the cleaner head. Use a multimeter set to AC volts & check for approximately 230v. You'll probably find the voltage missing due to the yolk harness being faulty.

If your not competent with a multimeter please leave it alone, electricity KILLS.
Repairs to All makes of Small Commercial & Domestic appliance. Power tool repair.
City & Guilds and PAT qualified engineer.

Offline MVacs

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Re: How To - DC25 Yolk Loom Replacement
« Reply #7 on: November 05, 2015, 06:51:20 PM »
On a DC25, there is no reset switch like a DC24, just the brushroll on/off switch, then that yolk loom, then the brushroll head PCB and motor,

There is a reset switch by the power switch.

Offline beko1987

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Re: How To - DC25 Yolk Loom Replacement
« Reply #8 on: November 05, 2015, 07:11:55 PM »
Is that a reset switch? I thought it was the brushroll on/off switch.  If it works like a reset switch though a bit of jabbing may work the same!
Collector and restorer of vintage vacuums, Dyson Appreciator! Come and see my blog, where I am uploading all my mountains of brochures, manuals and other vacuum cleaner paperwork, and also my youtube channel @beko1987!

Offline MVacs

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Re: How To - DC25 Yolk Loom Replacement
« Reply #9 on: November 05, 2015, 07:17:21 PM »
Is that a reset switch? I thought it was the brushroll on/off switch.

This will jog your memory.


Offline beko1987

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Re: How To - DC25 Yolk Loom Replacement
« Reply #10 on: November 05, 2015, 07:19:12 PM »
Damn baby brain... Why didnt I remember that...

Push the button! With the machine on and reclined
Collector and restorer of vintage vacuums, Dyson Appreciator! Come and see my blog, where I am uploading all my mountains of brochures, manuals and other vacuum cleaner paperwork, and also my youtube channel @beko1987!


 

 

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