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Author Topic: Hoover Sensotronic S3128 System 2 - A Rambling Refurb!  (Read 918 times)

Online beko1987

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Hoover Sensotronic S3128 System 2 - A Rambling Refurb!
« on: August 11, 2017, 11:56:41 PM »
I used to own this, and now I don't, having swapped it recently for something amazing! But I have a stripdown and almost refurb thread of stuff for it, so why not write it up!

I owned it for a fair few years actually, I bought it on ebay cheaply from the notorious vacuum destroyer joshyvacboy.

It worked OK. Here is Eva, probably not 2 at the time playing with it in 2013

<a href="https://www.youtube.com/watch?v=3yQ5QllbqNQ" target="_blank">https://www.youtube.com/watch?v=3yQ5QllbqNQ</a>

Anyway, here it is cleaning our old flat the day we moved out!



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<a href="https://www.youtube.com/watch?v=WRNAsROXr-o" target="_blank">https://www.youtube.com/watch?v=WRNAsROXr-o</a>

It was the last vacuum to clean there, and the first to clean our current house! (as it was the only vac I had to hand the day we moved in!)

I used it as my January Vac!

<a href="https://www.youtube.com/watch?v=LUH_fCw1ReQ" target="_blank">https://www.youtube.com/watch?v=LUH_fCw1ReQ</a>

Which involved cleaning up after taking the christmas tree down



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And it was generally pretty great. So let's get on with the usual style refurbishment, although it did not go entirely to plan!

Let's begin *cracks open a can*

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April 1983!

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The wands are not original sadly, but do their job well bar not being brown



The floor tool is apparently very rare, being a long neck brown one!

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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: Hoover Sensotronic S3128 System 2 - A Rambling Refurb!
« Reply #1 on: August 12, 2017, 12:03:28 AM »
Underneath was worn but not too bad

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(I cleaned this out a few years ago so it's not too bad now) but baseplate off

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And their springs

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The brush plate lifts out

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And the brushes pop out for a thorough clean

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The pedal assembly pops out

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And then the neck

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Onto the hose now, and again not original, although the machine originally came to me with a strech hose, also wrong but horrible to use, so I picked this up from another collector years ago.

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The Contour handle unscrews

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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: Hoover Sensotronic S3128 System 2 - A Rambling Refurb!
« Reply #2 on: August 12, 2017, 12:07:50 AM »
The suction control slider sits in this half

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And pulls out

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The Pip lock lever lifts out of the front part

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I could not get the ends off the hose at all, they would not budge, which made cleaning it alot harder than it should have been, but more on that later!

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Because it's time for the main show!

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Bag door off

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Tool tray out. Sadly 2 of the tools are non original

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The dusting brush has seen some use

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Crevice tool isnt too bad

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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!


Online beko1987

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Re: Hoover Sensotronic S3128 System 2 - A Rambling Refurb!
« Reply #3 on: August 12, 2017, 12:11:30 AM »
However the upholstery brush is lovely and original

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Tool tray is lovely and unbroken too

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Under the tool tray sits the bag. The chamber is sealed by the tool tray, so you can take the lid off to get at tools with the machine running.

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Good old single walled paper bags...

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The pre motor filter was dirty, but not too bad

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That removed, it's time to get electrical!

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This cover is broken sadly, it was when I got it. All the original sound deadening had long gone too

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The lid is wired up to the motor with 2 plugs

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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!

Online beko1987

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Re: Hoover Sensotronic S3128 System 2 - A Rambling Refurb!
« Reply #4 on: August 12, 2017, 12:16:25 AM »
and one here

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That separates the lid

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The brown trim is removed with screws and clips (some broken)

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The spring sits under the power button end

A previous repair (not by me, but it makes it much more tricky to try when someone else has been there before...

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The spring sits here like so

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The big rocker switch just lifts out

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Revealing the switch arrangements. The E lever is depressed automatically with the machine switched on (it pushes the switch). The white switch controls the oepration though, so each button just flicks the switch one way. The main power switch is the black one to the side



Wires to the power switch

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Switch removed

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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: Hoover Sensotronic S3128 System 2 - A Rambling Refurb!
« Reply #5 on: August 15, 2017, 12:01:07 AM »
The mode adjustment switch looks like this underneath

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Unplugged

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And removed

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The LED panel lifts out of the holder

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The coloured lenses lift off the trim

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How far have speed adjustment potentiometers come!

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The lights lift out of the housing

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And the adjuster module unclips too

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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: Hoover Sensotronic S3128 System 2 - A Rambling Refurb!
« Reply #6 on: August 15, 2017, 12:06:45 AM »
The adjuster wheel pulls off the electronics

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Branding

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More on these hateful things later!

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The selector arms come apart

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Onwards!

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The Pre motor filter cover unscrews

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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: Hoover Sensotronic S3128 System 2 - A Rambling Refurb!
« Reply #7 on: August 15, 2017, 12:10:46 AM »
This part here forms part of the blockage notification! It's a magnet within an arm, that gets pulled up (or down, I can't remember...) when the suction is blocked.

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Now, we need to turn everything on it's head



And remove all the screws

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2 hide behind the rear wheels

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Then the outer shell lifts off

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The mahoosive side bumpers lift off

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Which are a bit grubby

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Turns out the bumpers are in 2 parts too, so apart they come!

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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: Hoover Sensotronic S3128 System 2 - A Rambling Refurb!
« Reply #8 on: September 02, 2017, 11:52:09 PM »
Where were we? Oh yes!

Underneath the machine, now visible with the shell off is a tab that holds the cord reel in

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But we don't want that for now, we need to snip some cable ties!

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And lift the dividing wall out

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Then remove the plug (as it would have come without one, and the plug doesnt fit through the cable exit hole!)

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Now we can lift the cord reel out, the beige firewall holds it down. Then, open up the box holding 4 live wires, the front right one goes to the cord reel, remove it

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The red wire however goes to one of the multiblocks, and the easiest way to remove that was to unplug the single brown connector

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Remove the supressor

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Then finally remove the red wire from this block, noting where it goes

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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: Hoover Sensotronic S3128 System 2 - A Rambling Refurb!
« Reply #9 on: September 02, 2017, 11:57:19 PM »
Finally, we can call the cord reel removed!

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And look at the rest of the rats nest

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This connector is factory, I initially thought it wasn't but can see no reason why it would have been added...

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But, to aid the rats nest at the back, we need to move down to the front

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And remove the hose inlet

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Then unscrew the power nozzle plug

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The power nozzle wires can then be pulled up and out of the machine like so

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The motor just sits in the chassis, and would pull right out bar a short earth wire that took some creativity to remove

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It's 2 live wires are unplugged, one goes to the block of 4 and the other to the one lone brown connector

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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: Hoover Sensotronic S3128 System 2 - A Rambling Refurb!
« Reply #10 on: September 03, 2017, 12:03:43 AM »
The main loom of wires runs to behind here

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Behind here houses the PCB that runs the show

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Down under the motor sits a thermal cutout

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And the machine is de-wired! Note the removed part of the chassis, more on that in a sec. But first, some ancient crumbly diffuser fell out

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And I removed the bit that housed the TCO before I forgot where it went/it fell off

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The reason I had to remove the main firewall was the bag full mechanism, which is here

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It's actually quite cool, it's a magnetic switch. When the lack of airflow causes the sprung magnet the other side of the plastic to move, it pulls the contacts together and thrown the bag full light on! Sellotape removed and out it comes

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Info on the PCB

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And it is all finally out of the machine!

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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: Hoover Sensotronic S3128 System 2 - A Rambling Refurb!
« Reply #11 on: September 03, 2017, 12:09:31 AM »
Whilst we are there, the motor fancase rubber can come off

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As can the cord reel locking device, which pops out of here

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The cable guide is clipped onto this the other side

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And the spring sits like so

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The little rubber pad slides off



Back to the front again, we can remove the hose lock from the hose entry part

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The release knob lifts out with the black part removed (The black part lifts the release knob as the hose is inserted)

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The rear grille slides out of the chassis

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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: Hoover Sensotronic S3128 System 2 - A Rambling Refurb!
« Reply #12 on: September 03, 2017, 12:16:52 AM »
The bag holder has a plastic bush that widens it out slightly to fit though the chassis and create an air tight seal to the hose inlet side

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This yellow arm holds the bag in place, and fits like so

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This rubber seal sits between the white bush and the green part

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The seal on the bag side was done for, so I removed the remains

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The carry handle is another insert and lifts out

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Underneath is a front wheel!

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Once unscrewed, you can see 2 white nylon rollers underneath

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And the main wheel pops out

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The chassis is empty! Years of carbon dust are now visible after I've got my fingerprints all over it

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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: Hoover Sensotronic S3128 System 2 - A Rambling Refurb!
« Reply #13 on: September 03, 2017, 12:21:51 AM »
The motor has 2 soundproofing (I presume) shells around it that unscrew

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And 2 anti vibration posts that hold the shells on

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to reveal the motor itself

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These french motors HATE being disassembled, so I am doing nothing to it!

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It's utterly fine anyway, little drop of oil on the top bearing will see it reet

The cord rewind had to be cable tied as it very slowly unwound itself...

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And we are stripped!



Everything was washed and polished in the usual way

And I tried to make sense of the wiring...

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There's a loom for the controls on the lid, then the main chassis loom. I untangled it all

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: Hoover Sensotronic S3128 System 2 - A Rambling Refurb!
« Reply #14 on: September 03, 2017, 12:25:13 AM »
I then gave it a light polish

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Which came up well

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Caught my bloody pad on an edge though, luckily they are very cheap

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This put some shine back into the plastic

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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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