Dyson DC25 Refurb

[beko1987]

Well, this came to me the other week for the great old price of squat. It has a broken handle, which I have sort of fixed, but decided it should possibly be replaced. Before spending out however, I decided to tear it down and see what condition its in.

This can't be more than a few years old...

From Dyson DC25

Hose out

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Cyclone out

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Head off

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I decided to start on the motor, since it ran very well...

From Dyson DC25

From Dyson DC25

From Dyson DC25

Brushroll on/off contact

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From Dyson DC25

Left hand centre screw comes out

From Dyson DC25

From Dyson DC25

From Dyson DC25

From Dyson DC25

From Dyson DC25

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After many refrence shots of all the wires, the ball could be removed!

From Dyson DC25

Into the motor

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Mmmm, good sealed suction here then...

From Dyson DC25

From Dyson DC25

Filter out

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Ball split

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Little plastic part

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The pivoting circle looked in good condition, will get a light grease before re-assembly

From Dyson DC25

First seal out

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Motor out. Notice anything odd?

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Refrence shot of the wiring through the casing

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From Dyson DC25

Rubber mounting seal out

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WTF is this?

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felt like cotton wool

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From Dyson DC25

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Time to take the wheels off the chassis. Refrence of the first spring

From Dyson DC25

From Dyson DC25

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And all off

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Another spring

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Red switch

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Release catch has taken a bit of a hammering

From Dyson DC25

From Dyson DC25

Started stripping the hose diverter thing

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5 screws later and

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From Dyson DC25

From Dyson DC25

This black part taps out from the spring

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And all stripped

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From Dyson DC25

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getting there! More soon after dinner...

 

[madabouthoovers]

Its obvious that someone has used this with the premotor filter missing, or a child has played with it and maybe put cotton wool balls down the motor inlet pipe, but this would have certainly reduced suction. I got an E502 with the motor internally clogged like that once and it was a right swine to get all the crap out of the twin fan assy.


I see that motor is made in China - typical of Dyson to minimise costs and maximise his profits. No better than Vax really but 3 times the price.

 

[vintagerepairer]

Cotton wool balls

Very possibly, but not necessarily executed by a child. I have seen several cleaners where the owners soaked cotton wool in a fragrance and then placed it somewhere in the cleaner. Had this been done to the top of the filter, we have a viable explanation for the presence of what we see here.

I have always been amazed that Dyson cleaners have rarely had a single thing to protect the chute on their ducting.

 

[madabouthoovers]

Its like Mr Scott from Star Trek once said Benny, "the more complicated they make the plumbing, the easier it is to stop up the drain"


Dysons are way too complex now - they are vacuum cleaners at the end of the day - the more there is to go wrong, there is a good chance that it will go wrong. Perhaps Mr Dyson thought that by not protecting the inlet duct to the motor - i.e. not making it fool proof, he would generate more revenue from people calling out engineers to be told that the fault was user induced and would be chargeable.


In fairness though, most bagless vacs have no last line of defence filter in the ducting before the motor inlet - only the pre-motor filter that the user may/or may not forget to replace after washing, which was probably what happened here. The Hubby could have taken the filter out to wash it, and put the vac back together again, then the wife, unaware that the hubby had removed the filter, went and used it with the filter missing. Dysons do let fine fluff through the cyclone assy like what Beko1987 showed in his pic. The Vax Air Agile I have does the same too and I often find fluff clinging to the pre-motor filter that has escaped the cyclones.

 

[madabouthoovers]

soaked cotton wool in a fragrance and then placed it somewh

This is exactly what I do with my Kirby, except that the cotton wall ball goes in the top of the outer bag, and then I can renew the fragrance when needed. If you want to fragrance a bagless vac, put a few drops of it directly on the post motor filter, then there is no risk of it getting drawn in to the motor fan vanes.

 

[beko1987]

I agree with the complexity. Got another 150 ish pics to carry on the thread with, but we have guests round atm, will carry on later!

It's impressive in a way, but I put my tp junior together earlier and it was lovely, the dc25 isn't.

 

[madabouthoovers]

When I think what a doddle the DC07 was to work on, I loved stripping them down and re-assembling them, it was so easy! When I saw how complex the DC15 was I thought - its more a work of art than a vacuum cleaner. Dysons are now way too over-engineered, hence so many of them appear for spares or repairs prematurely on Ebay. I note the DC24 and DC25 were very notorious for brushroll faults, and seeing how thin and fragile the wiring loom is on that DC25 around the wiring to the head, its no surprise that they failed. This wiring would be subjected to constant bending and flexing, and would easily break. I believe the brushroll motors themselves weren't much cop, with very short carbon brushes, and easily damaged power transfer cogs. perhaps you could photo the brushroll motor in detail, and show the carbon brushes and drivetrain/gearbox as I don't think these heads use drivebelts, although I could be wrong, as I have never taken the power head to bits on my DC15 and the DC25 looks very similar.


 


I wonder how reliable the brushroll motors used on the Vax Mach Air range will be? I  tried to disassemble the head on my Mach Air reach, to see the motor, but stopped halfway through as I couldn't work out how to get the wheels off to access screws behind them. The heads on the Mach Air are very tricky to dismantle, so replacing a motor or belt will be a headache on these too.


Look at the good old Hoover Senior, changing a belt was a 1 minute job and no tools needed, but these twin motor affairs are a real pain to work on.


I still think that the single motor uprights are the best - so much less to go wrong, and easier to change the drivebelts.

 

[madabouthoovers]

Looking at the pipe inlet from the bin assy to the motor, its very dirty - have you looked to see if the bin lid actually has a pre-motor filter in it? That pipe should be clean, as it should only carry air that has been filtered through the pre-motor filter.


Its the pipe on the right on your pic:

 

[beko1987]

It's been run with all it's filters, there's a picture of the bin filter coming up!

 

[beko1987]

I had a dc24 with a broken main motor. The Brushroll housing alone sold for near £50 as it worked. Sometimes these machines are worth more in parts than complete.

This is my first new Dyson stripdown, and I want to master it as this is the future, so may as well learn now!

 

[beko1987]

Right, lets carry on, since some of you seem to be interested!

From Dyson DC25

Switch housing next. This seemed to be clipped together by a non existant clip, which was odd

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Switch bits

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Lots of wires

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From Dyson DC25

A bit of unplugging and the trunk wire is removed. Note the non standard colours

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Cyclone clip removed

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Standard dyson stuff

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Changeover hose

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Hole left by the hose

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The screws so far

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Yolk next

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Wires and cover removed

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From Dyson DC25

The contacts remove from the plugs and leave just plastic

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From Dyson DC25

Random floaty thing removed

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All done

Brush head next

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Peaky looking brushroll

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End cap looks good

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Out of the bearings

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Various wear markings

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Endcap

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Little odd wheel in the corner

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With the only philips screw in the whole project

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8 more screws and the cover comes off

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The belt has to be removed from the assembly first for it to seperate

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The cog then unscrews from the housing, and taps out with a hammer

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The little bearing comes out the other side with a tap too

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Teh three wheels come off

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Years of greb

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Getting there

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First up is this odd and slightly pointless piece of plastic that the wires loop through

From Dyson DC25

From Dyson DC25

The motor then unclips

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From Dyson DC25

PCB looks in good order

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From Dyson DC25

The plastic cover snaps off, and the wires can be removed from the brushroll

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And the wires remove as thus

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Motor was breathing nicely then...

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Took the end bit off to give it a wipe down

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Finally the 'bumper' and 'clear' cover can be removed

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Cyclone...

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Lid off

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Lid shrapnel off

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I'd hate to take apart those new filterless dysons after 3 or 4 years

From Dyson DC25

From Dyson DC25

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Time to split

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Pulled the bottom of the innter bit out and this greeted me

From Dyson DC25

From Dyson DC25

From Dyson DC25

From Dyson DC25

And there we go, fully stripped and ready for washing

From Dyson DC25

Tiny bits

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Non washable bits

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The mess afterwards

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And EVERY screw from a Dyson DC25.

From Dyson DC25

Now I just need to wash it all and put it back together!

 

[madabouthoovers]

Nice one - I see that it uses a belt to drive the brushroll. I am sure that on the DC15 it uses cogs or some kind of transmission to drive the brushroll without the use of a belt. Or am I thinking of the DC24? I am a bit confused which one now.


was it not possible to remove the carbon brushes from that brushroll motor to inspect them for wear?


I am also sure I read somewhere that Dyson used a type of motor in this model and the Dc24 that only actually ran for 50 hours before buring out the carbons - what make of motor is it? I am very curious about these tiny motors as they seem such a common failure point and it concerns me that the same type of motor may be used on the Vax Mach Air of which I have more than one example.


There is a few more screws there than on the DC07 - wouldn't you agree?

 

[beko1987]

The dc 24 Brushroll motor is tiny compared to the 25 motor. I have a dc24 to refurb too, so will put some pictures up so you can see.

 

[parwaz786]

Wow! This brings memories of my DC25 animal, I want mine back lol
Hopefully it will work good after the refurb and you will like it better than you did before the clean out (

 

[beko1987]

Well, it's all washed out.

I think I need a new Brushroll, filters and a wand, but will see what it's like when it's back together.

 

[rootcyclone]

I'll be getting a DC25 soon, a DC25 Animal to be precise from my auntie...

 

[beko1987]

Lucky you! At least you know its history and that it has been looked after!

I grabbed an hour last night and cleaned the rubbers

From Dyson DC25

From Dyson DC25

From Dyson DC25

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and put the cyclone together. Not a fan of how the foam gasket protrudes out of the cyclone housing, looks a bit like its not in properly

From Dyson DC25

From Dyson DC25

From Dyson DC25

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Could not get that completely clean no matter how hard I scrubbed! Bad filter maintanance that is!

From Dyson DC25

From Dyson DC25

From Dyson DC25

I put the washed filter back in for now, but if she runs well when its all back together I'll buy a new set

From Dyson DC25

From Dyson DC25

From Dyson DC25

From Dyson DC25

Next to my refurbished DC24 cyclone unit

From Dyson DC25

Hopefully tonight I can crack on with the brushroll assembly, pain in the a*se that is... Why do the tiny wires not stay where you put them!

 

[zinda]

Just my 2 cents

I was wondering when the bottom head was going to be shown, typically if you have one that's still working, you'll find it's worth more by itself than the entire vacuum is. Since the design is so seriously flawed that geared belt piece on the end of the brush roll has a bearing that sits in the thinnest plast cup type holder, the bearing gathers up fibers and hair then gets hot. The plastic is so thin and cracks in multiple places which allows the brush roll to tip and get loose in that cup. The entire bottom piece is then junk and there are no replacements (as usual) finding another that works is never going to happen.

Most times you can see the belt wear marks on the outside of the case where the gear has allowed the geared pulley to tip and rub inside the plastic case. This will then push the belt off the pulley and into the side of the case which will smell like burnt plastic quickly. There is no cure just like all of Mr. Dyson's flawed designs that were produced after he went to the Ball type.

If you're here hoping to find a quick fix for your Dyson ball I can tell you the fastest way to remedy it is to sell it to someone else who thinks they can fix anything. If you are smart you'll sell it without the brush assembly and be happy with the $20 you might get for it.

If it's a newer ball model there will be other problems besides the same or similar gear pulley issues, but most often the entire assembly that allows it to tip and moves a flapper switch from hose to ground will be worn out, once again poor planning and excessive strain on the pivoting parts that are not made strong enough to move freely after a short time. Most parts are sleaved and only have 1 screw holding it on 1 side while the other side moves out of position allowing parts to miss each other and failure is eminent and cannot be repaired unless all parts are replaced in the entire assembly which consists of just about every moving part around the motor case.

After the ball came the biggest lie and worst vacuum Dyson ever created based on the ball the cenetic or big ball "filter less" which of course used filters just like his fanless fans!

The guy is nothing more than a copier if items that already exist but he changes and complicated their design to a point that they become useless very quickly.

The big ball filters are said to last forever, if your definition of forever is 3 years then you will be happy with your $600+ vacuum.
The filters are available , or were for $70 each but are always sold out? How can that be when they last forever m

Don't give this cin man your money!