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Author Topic: Miele S424i - Stripdown and Refurb  (Read 918 times)

Online beko1987

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Miele S424i - Stripdown and Refurb
« on: April 25, 2017, 10:50:56 PM »
This used to be my mums



I got it for her soon after I met Amy, for 25 from Reading via ebay. It's been a good old thing, and served mum well. But, I obtained a free and quite battered Miele S5 for free from Facebook just after christmas, so I gave mum that (as it was too far gone to be refurbed, and made a good upgrade) and took this back to sell.

First up, the mini turbo brush I found to go with it

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Pop the lid

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Then prise the end caps off

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This separates the two halves

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The turbine and the framed end caps it sits in lift out and off the belt

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Surprisingly this still span quite well

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The axle doesn't come out of turbine (certainly not cleanly) so I cut and picked it all off

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The baseplate and brushroll pop out of the main frame

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Re: Miele S424i - Stripdown and Refurb
« Reply #1 on: April 25, 2017, 11:00:29 PM »
The white brushroll end caps prise out from the sides, then the brushroll can be removed

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The brushroll got cleaned, and I started on the main turbo head

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These screws turn (and are a bit chocolatey, so mind the screwdriver)

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And the baseplate lifts off at the rear and unclips from the front

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With that, undo the 4 normal screws and lift the top off

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The suction valve unclips

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Next, we need to undo these screws here holding this cover on

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You can lift out the turbine and neck. The axle does push out of the turbine here, and needs to so you can seperate the two parts

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Re: Miele S424i - Stripdown and Refurb
« Reply #2 on: April 25, 2017, 11:10:22 PM »
The brushroll and belt guard lift off

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The end caps come off the brushroll

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And I cleaned the brushroll ready for washing

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I left the wand alone, as it was fine

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Hose now

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The ends remove easily, no tools needed on the wand end

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Some light tab flicking on the machine end

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And we can finally move onto the actual machine 3 posts in!

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and lift the first hood

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Re: Miele S424i - Stripdown and Refurb
« Reply #3 on: April 25, 2017, 11:14:19 PM »
Small tools off

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The tool door is broken, I am hoping it will glue up at this stage in the past

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So off it comes

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Bag fill piston indicator now

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2 screws has it out

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and it pops apart

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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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Re: Miele S424i - Stripdown and Refurb
« Reply #4 on: April 25, 2017, 11:36:35 PM »
Next lid opened now, to reveal the bag door! (brand new bag fitted so I could sell the machine with a new bag...)

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To remove it, push the 2 black hinges either side inwards one at a time, they pop off and the door lifts off

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The bag door catch fell off in the car after some enthusiastic cornering when I forgot it was in the boot (I miss the Xantia, it did corner well!), so this is what it looks like if I had just taken it off...

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Underneath the bag door, the hose inlet is fixed in with 4 screws

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Once they are removed, it and the bag seal flap fall off

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4 tabs split the unit down further still

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The bag support is held in with a screw either side

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And a spring which sits like so on the bag support and braces/springs against the main body of the machine

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Re: Miele S424i - Stripdown and Refurb
« Reply #5 on: April 25, 2017, 11:43:29 PM »
The post motor filter cage lifts out next

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And these two screws need to be undone

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Which enables the switch assembly to be removed

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The part that rotates and turns the potentiometer when the power slider is adjusted lifts out

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The power and cord rewind pedals pop out, each pivot is one big clip

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The slider itself can be removed

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Onto the electronics now. The black rod is a switch that is activated when the floor tool is parked in the cleaner, it turns the machine off (and has never worked)

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It lifts out, along with the unplugged switch

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Re: Miele S424i - Stripdown and Refurb
« Reply #6 on: April 25, 2017, 11:54:59 PM »
The main on/off switch lifts out now, you can see that both are on the same circuit

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it goes to here on this packed connector

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Undoing some more screws enables the whole rear part to lift up, which will include EVERYTHING!

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The cord rewind lifts out of the unit and the blue wire unplugs from the connector block, and the black from the switch.

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Unplug the motor plug

The motor is held in by the one screw in a frame

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And once unscrewed the motor can be removed

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The fancase frame clips onto the top part of the vacuum

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All the sound deadening can be removed

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As can the connector block

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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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Re: Miele S424i - Stripdown and Refurb
« Reply #7 on: April 26, 2017, 12:00:15 AM »
Lots of sound deadening sits in the bottom of the machine too

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Staying with the lower chassis, 2 screws hold the carry handle together

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The furniture guard/motor housing seal lifts off then

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Under these two screws is the power socket and wires

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Once removed, the whole lot comes out

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Underneath now

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Pop each wheel off, and you can see the screws underneath

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Undo all 8 screws and the wheel assemblies come off, and can be split further for lubrication

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Re: Miele S424i - Stripdown and Refurb
« Reply #8 on: April 26, 2017, 12:15:29 AM »
The last thing to come out is the side parking slot

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and it's all done, and ready to be washed

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and dried, polished and ready for reassembly

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Wheels first

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Put a smear of grease on the metal stub at this point

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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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Re: Miele S424i - Stripdown and Refurb
« Reply #9 on: April 26, 2017, 12:24:07 AM »
Side parking slot refitted

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Power socket and wires fitted

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And run around like so, with the plug fitted in place

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The bumper/seal can be fitted now

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Handle bottom fitted

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Refit the sound deadening once it's fully dry to both halves of the casing

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Pop the motor fancase holder in

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This is the thermal cutout for the motor. Clean this up so it doesn't give false readings and overheat when it shouldn't!

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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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Re: Miele S424i - Stripdown and Refurb
« Reply #10 on: April 26, 2017, 12:27:33 AM »
Fit the motor and screw the clamp down

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Refit the cord reel, not forgetting to pop the cables through the chassis to the top side

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Wire everything up on the top side

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Re-assemble the switch cover

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And refit the speed control stuff underneath

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And bolt it all down

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Fit a nice air freshener

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then fit a new post motor filter with cage

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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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Re: Miele S424i - Stripdown and Refurb
« Reply #11 on: April 26, 2017, 12:31:35 AM »
Screw the bag holder down

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Pop a nice new pre motor filter in

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fit a new bag

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Fit the bag door latch

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Reassemble and fit the hose entry parts, then fit the bag door. Line one side up, and fit the hinge parts, then lever the other hinge side on



Re-assemble the piston indicator

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and screw it down

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Then refit the tools and tool door

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Sadly glue did not hold the hinge, but I was completely honest when listing it for sale and it still sold within 20 minutes, so it wasn't worth worrying about!

Main turbo head now

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Pop the slider back into the hood
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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Re: Miele S424i - Stripdown and Refurb
« Reply #12 on: April 26, 2017, 12:35:47 AM »
Refit the brushroll into the base chassis

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Re-assemble the turbine and neck, and refit the cover

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Then screw the turbo brush together and fit the baseplate

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Re-assemble the mini turbo head

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And the job is done!

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It sold for 55 even with the bag door fault declared and shown the the buyer, who did not care, she had been wanting a 'nice Miele' for her dad for a while, and seemed impressed with this when I demonstrated it to her! So that's 25 to buy, then used for nearly 5 years, then sold for 55, so 30 profit for changing my mums hoover, bargain!
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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Re: Miele S424i - Stripdown and Refurb
« Reply #13 on: April 26, 2017, 05:02:12 PM »
It sold for 55 even with the bag door fault declared and shown the the buyer, who did not care, she had been wanting a 'nice Miele' for her dad for a while, and seemed impressed with this when I demonstrated it to her! So that's 25 to buy, then used for nearly 5 years, then sold for 55, so 30 profit for changing my mums hoover, bargain!
Congrats!  It's always great when things work out so nicely.

Also, thanks for the pictorial (as always!).
You miss 100% of the Dysons you don't buy.  -Wayne Gretzky
 -Michael Scott  -GeorgeJ

Online beko1987

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Re: Miele S424i - Stripdown and Refurb
« Reply #14 on: April 26, 2017, 06:12:53 PM »
Yep, always good when I can make money by not doing much work!
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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