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Author Topic: Hoover Senior Commercial U4082 - Stripdown and Refurbishment!  (Read 4171 times)

Offline beko1987

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This is a flipping rare vacuum cleaner! Made in the mid 80s briefly, its basically a normal Senior but commercialised!

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It ran really well actually, despite spending probably 20 years in a garage.


However the day after that I let me mum use it, and it blew its supressor in SPECTACULAR fashion. Full on sparks out the back, the works. You'll see small hints of this as we progress!

(and yes, if you're reading this because it's further up the page than the Senior 652a thread https://manchestervacs.co.uk/DysonForum/index.php/topic,1358.0.html here covers the older style, this the newer style.)

As they stood in my front room (and yes, there's full threads for the other two sat here in my 282gb of Done - To write folder!)



There was little damage, just alot of grime and neglect



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October 1989

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Peeled off easily too so I had it off. The 69th one ever made too, which is even more amazing!

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Cable off

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Lovely matching plug

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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!


Offline beko1987

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Re: Hoover Senior Commercial U4082 - Stripdown and Refurbishment!
« Reply #1 on: April 13, 2020, 09:56:02 PM »
Which came apart to be washed

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Dropped the bag next

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and set it to one side for now

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Removing the centre bolt gives us the cable guide stuff

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which comes apart a bit

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The handle stays pretty much as is

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I even left the top cord hook as it's a sod at the best of times on a normal cleaner, let alone a rare on with a special textured paint job that was in good condition!

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It went into the first of it's boiling water dunks to soften the glue holding the handle grip on as it was twisted and pulled back a bit and looked awful!

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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!

Offline beko1987

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Re: Hoover Senior Commercial U4082 - Stripdown and Refurbishment!
« Reply #2 on: April 13, 2020, 10:00:44 PM »
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Onwards to the bottom bolt

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Which releases the plate that does all the work

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One of the 'commercial' bits of the machine here, some internal bracing of the handle to stop it bending and distorting over time as I have seen before, a very good idea!

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Wiring next.

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Mmmm wires

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Out it all comes

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Revealing what is the original cable! (or an original replacement, the ends are never terminated in the crimp rings unless it's a genuine cable!)

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The terminal block pulls out now and the wiring running to the machine can be un-done

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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!

Offline beko1987

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Re: Hoover Senior Commercial U4082 - Stripdown and Refurbishment!
« Reply #3 on: April 13, 2020, 10:05:30 PM »
And eventually you will hold it in your hand

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The wires need to come off the terminals to be able to pull them through the filthy sleeving later

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Onwards to underneath!

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Baseplate off

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Brushroll and belt off

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Let's strip the brushroll. Endcaps off

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Pull one half through

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Then take everything apart!

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Going by the state of these they are the originals...

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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!


Offline beko1987

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Re: Hoover Senior Commercial U4082 - Stripdown and Refurbishment!
« Reply #4 on: April 13, 2020, 10:09:20 PM »
End caps were proper grimy too



Onto the tool port now, and they didn't even try with this, it's still hop green! (or jonquil, I forget which shade was which...)

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I don't think it's ever seen tools

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Pulling the pin put of the suction diverter flap

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Releases the spring, which fits as shown

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The rear wheels will be flopping about the place now, and note to remove and keep safe the centering bracket for the axle (shows it's based on the later style Senior)

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The rear axle starts with a circlip

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and ends with a pile of bits

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Mmmm grimey

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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!

Offline beko1987

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Re: Hoover Senior Commercial U4082 - Stripdown and Refurbishment!
« Reply #5 on: April 13, 2020, 10:12:21 PM »
Same story with the front wheels, just peel the bumper up so the axle can come out

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Not too bad

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Let's uncover the switch now by removing it's cover

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More hidden filth

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This leaves the switch hanging free, and we can remove the two hood screws

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And take the hood off! You can see the mark from when the supressor went too... My poor mum shit herself  :biglaugh:

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Offline beko1987

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Re: Hoover Senior Commercial U4082 - Stripdown and Refurbishment!
« Reply #6 on: April 13, 2020, 10:18:08 PM »
I really wish it had gone whilst I was filming, it was pretty spectacular

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Anyway we find ourselves still staring at a very familiar cleaner that looked about the same 30 years before (and before that, same motor as in the 262, 612 etc)

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First though we'll pop the headlight cover blank off the hood

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And take the screw brackets off

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Now we can remove the height adjustment thing, one circlip up here

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and off it comes

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We next need to remove the circlip hiding here on the inside edge of the foot pedal

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Note where the circlips and washers go as you do this

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Take the pedal off from the LH side, then move along the bar from right to left and remove all the clips

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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!

Offline beko1987

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Re: Hoover Senior Commercial U4082 - Stripdown and Refurbishment!
« Reply #7 on: April 13, 2020, 10:21:38 PM »
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Then when all loose, tap the bar out from everything with your favourite hammer

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We can remove the supressor bracket now

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Take one last look at the impressive aftermath

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And hoof it and the bracket into the bin. Remove the red terminal cover next

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Start unwiring it. The two red cables go to the switch

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Undo this screw to release the cable from the bracket

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and dig out the switch from the filth

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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!

Offline beko1987

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Re: Hoover Senior Commercial U4082 - Stripdown and Refurbishment!
« Reply #8 on: April 13, 2020, 10:25:33 PM »
The foot pedal bit pulls off the switch

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Looking on the other side of the motor we see the bracket that holds the wiring harness down

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out it all comes

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Let's remove this white wire

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cable tidy unscrewed

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Unclipping it also releases a carbon brush

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Same with the yellow wire going to the other brush

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The brush on this side didn't come out, and pulling is pointless as it'll just pull the spring off the end of the brush, so we can leave it for now

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and remove the remaining top screws holding the top bearing down!

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Offline beko1987

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Re: Hoover Senior Commercial U4082 - Stripdown and Refurbishment!
« Reply #9 on: April 13, 2020, 10:28:50 PM »
Next, undo the screws holding the motor to the chassis

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and chisel/lift it out (as appropriate)

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Decades of patina!

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Chassis is as stripped as it can be now short of removing the bumper (which unless you're good at making and fitting blind rivets leave on!)

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Carrying on with the motor now, the belt spindle comes off

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Then the fan

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Then the spacer washers and main spacer spacer...

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Back up top, unscrew the cooling fan

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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!

Offline beko1987

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Re: Hoover Senior Commercial U4082 - Stripdown and Refurbishment!
« Reply #10 on: April 13, 2020, 10:32:27 PM »
Another level of screws splits the motor to show the coil

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We can push the stubborn carbon brush out of its holder now

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Unbolt the coil

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and tap the armature out of the bottom bearing

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DING! Handle is done, pulled off nicely

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Everything then got washed and dried. Whilst the drying happened I grabbed another vacuum and got to work on the bag

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Bag flange off

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Then the really horrible bit, turning it inside out...

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Then I started to vacuum 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!

Offline beko1987

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Re: Hoover Senior Commercial U4082 - Stripdown and Refurbishment!
« Reply #11 on: April 13, 2020, 10:36:25 PM »
Eventually, it was as clean as it was going to be

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You must NEVER wash 1980's Hoover bags as the transfers will wash off before your eyes! And this was very good, and very sodding rare! And luckily not utterly filthy, a good vacuum sorted it right out

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Then some polishing was done, and I ran all the small parts over the wire brush as normal, and we find ourselves at this stage!

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and we can re-assemble the motor! Starting by filling the bottom bearing back up with oil, as it all got washed out

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Then the coil can go back in

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Then the armature, and it should spin freely on the bottom bearing if you don't move it whilst it does

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Top piece can be screwed on now

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Cooling fan fitted

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First of the spacers for the fan on

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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!

Offline beko1987

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Re: Hoover Senior Commercial U4082 - Stripdown and Refurbishment!
« Reply #12 on: April 13, 2020, 10:40:20 PM »
Then the rest

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Then fit the fan and belt spindle

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Should still spin like a champ

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We can now re-fit the motor to the cleaned up chassis! If the original motor housing seal is too far gone a nice bead of silicone works probably better!

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Now re-fit the top bearing with a nice smear of grease around the shaft, and run the yellow wire routing and fit and run the white wire, with carbon brushes

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Take the switch

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pop the cover back on

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and fit it



run it's wire nicely

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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!

Offline beko1987

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Re: Hoover Senior Commercial U4082 - Stripdown and Refurbishment!
« Reply #13 on: April 13, 2020, 10:46:14 PM »
Plop the bit that sits under the wiring connector down

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Then the connector itself

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And wire it up as it was before

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and pop the cover on

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Now, there will be 4 spare wires from the supressor. Just join them together!

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and tidy it up a bit

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Refit the handle bail axle, with the bag flange lock slider, wit ha nice smear of grease along the rod so it slides freely

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Remembering where all the washers and circlips go, clip the wire to the wire holder and assemble the RH side

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Then assemble the recline lock pedal and gubbins on the left, again, nice smears of grease everywhere!

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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!

Offline beko1987

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Re: Hoover Senior Commercial U4082 - Stripdown and Refurbishment!
« Reply #14 on: April 13, 2020, 10:50:35 PM »
It should all move very freely and easily once you're done

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Front wheels next



Again, nice smear of grease on the axles will prevent it squealing as you push it

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Same with the back axle, grease and assemble! Not forgetting to fit the height adjustment rid to the axle before the wheel

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The hamster came to say hello

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Re-assemble the suction diverter flap, and refit it and the tool port cage

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The brushroll was a tough call not to paint. The damage was fairly minimal, and the rest of the paint in good order so I polished it and left it be, as it's original, and not utterly trashed

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Nice brand new bearing in

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and with a new belt, the assembled brushroll can be re-fitted to the machine. Look at the amazing brush strips!

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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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