Dyson: Please sell me the part I need

A DC32 Animal Vacuum Cleaner gets a second chance

One of these please, Dyson…

 

IMG_0558
FixItWorkshop, Worthing, December 2019, broken turbine/ fan.

All things made, will eventually break.  Things that are made eventually wear out and either must be replaced or repaired.  However, some things wear out a little faster than others.

Planned obsolescence and manufacturing budgets mean that parts within products can wear out faster than reasonably expected and fail totally, rendering the rest of a perfectly working item, useless.

This is where us repair folk come in.  We refuse to accept this problem and work away tirelessly in sheds and lockups everywhere, working on solutions to problems such as this, keeping things going, a little longer.

A friend’s DC32 Animal cylinder vacuum cleaner’s roller beaters had stopped turning and made nothing but a horrible noise, when the cleaner was in use.  Not cool.

The roller beaters on this model are literally vacuum operated by a turbine/ fan which spins fast when air passes across it, driving the beaters by a toothed belt and gear.  There is no separate motor to drive the roller beaters, which is quite an elegant solution to a complex problem.

Fast forward to the issue and despite identifying the broken part and then contacting Dyson directly for a replacement, they would not sell what I needed, a part that would probably cost no more than £10 to supply.  Such a shame.

Website
FixItWorkshop, Worthing, December 2019, Dyson website screenshot 22/12/19.
Copy head
FixItWorkshop, Worthing, December 2019, a copy item on eBay for under £20, screenshot 22/12/19.

The price of the (original equipment quality) complete Dyson Turbine Head, suitable for the DC32 vacuum cleaner, is £60.00 as a direct replacement from Dyson, but the part is now copied by other manufacturers.  A pattern part design is available for under £20 and if this was my machine, I’d be tempted at that price.  Pattern parts have their place, but I suspect that at this price, performance won’t be quiet as good as the original.

So, a choice:

  • Replace the part with a brand new Dyson part – too expensive
  • Replace with a non-original part, that will probably do the job – unknown outcomes, unsatisfying
  • Attempt a repair on the original part.  Of course it’s what I’m going to do!

On with the repair.  The Turbine Head is screwed together using Torx head screws and the side vents that secure the main drive unit, pop-off the main casing, with some encouragement.

This slideshow requires JavaScript.

A picture paints a thousand words and the above slide shows the dismantling and reassembly process for the Turbine Head.  If attempting this kind of thing yourself, remember to keep all components free of dirt and grime.

In the absence of a replacement, I attempted a repair to the existing fan and since it was made of plastic (some kind of nylon derivative I think) it was going to be difficult.  Not many glues will stick this type of plastic well, so my choice was going to be ‘make or break’, literally.  I considered an epoxy resin, but opted for Gorilla Glue, since it expands slightly in use, to all of the microscopic gaps.  I also used it to modify the fan by filling-in around the spindle to try and prevent slippage, when spinning.  When dry, I lightly sanded any high spots of glue away.

IMG_0655
FixItWorkshop, Worthing, December 2019, glued turbine/ fan.

Once the whole unit was back together and reconnected to the main vacuum cleaner, the head roller beaters spun once again without a horrible noise.  Question is, how long will it run for?  If anyone thinks they can make a replacement using 3D printing, please let me know!

Hotpoint ‘Rumble’ Tumble Dryer VTD01

A noisy tumble dryer gets fixed cheaply

Strange noises from machines play on my mind.  None more so than when that niggling noise starts to get worse.  Noises like that usually mean two things.  Catastrophic failure and expense.

Time to disconnect from the mains and fetch the tool box.

The patient in the surgery this week is our own Hotpoint tumble dryer.  We avoid using it at all costs, but with miserable English weather and two children, getting washing turned around efficiently, ready for use is mandatory.  To be frank, I’d noticed the excess whinning bearing noise coming from the dryer for a few uses, but it was getting to the point where it was hard to ignore.

Electric hot air tumble dryers are pretty simple things.  They work by sucking cool air in, heating it up under thermostatic control and then blowing it in to a rotating drum.  The moist air is then expelled via a filter and then hose, to atmosphere.  Tumble dryer models of this kind will have the following:  A motor, heater, thermostat circuitry, timer and a drum.  There isn’t much to go wrong and many parts for UK tumble dryers are available, cheaply from places like eSpares.co.uk.  Usually, no special tools are required if you want to have a go at fixing your machine and I recommend you do of course.

IMG_7419
FixItWorkshop, Worthing, December’18, Hotpoint VTD01 Tumble Dryer.

After opening up the cabinet, access to the drum and motor was available by the side panel which was held in position with several self-tapping screws and hooks.  Care must be taken if you attempt something similar on your machine since there are plenty of sharp edges to watch out for.  This dryer features an AC induction motor (which has no motor brushes).  It has a spindle which runs through the motor with a pully one side to drive the drum via the belt and a fan the other to blow the hot air.  Removing the belt and spinning the motor by hand revealed the problem.  The spindle spun OK, but sounded rough.

Replacement motors are available at a reasonable £90 or so, but you know me by now, I don’t like spending that kind of money, unless I have to.

The motor is attached to the appliance with simple bolts and is removed easily.  The motor is held together with self-tapping screws, which are easily accessible.  Just two bearings feature in this motor; one at each end to support the load.  Both bearings sounded rough, but seemed not to be worn too much.  The bearings are standard items and it would be easy to find exact replacements from a bearing supplier (rather than replacing the whole motor), for under £20.  However, as this was my own machine, I went for cheaper fix, to squeeze more life out of what I already had.  With the dust cover popped off from both bearings, I cleaned both with isopropyl alcohol cleaner and then re-greased with quality high-melt point bearing grease.  Much better.

This slideshow requires JavaScript.

The motor re-assembled, re-installed back in the machine and it was time to switch on.  It now sounded as sweat as a nut.

If and when the bearings get noisy again (and they will eventually), I’ll replace the bearings with new ones.

Cost of replacement:  circa £200.  Cost of repair:  My time, two cups of tea, one custard cream, a bit of grease.  Not in that order.