Dyson DC40 missing a beat

A small repair on a Dyson DC40 leads to a big improvement.

A powerful, easy to manoeuvre vacuum cleaner, that gets into every nook and cranny.  But not this one.

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FixItWorkshop, Worthing, May’19, Dyson DC40.

Three top tips for keeping your Dyson DC40 in rude health:

  • Keep all filters clean (wash or replace frequently)
  • Clean all rubber seals with a damp cloth to remove dust build-up
  • Occasionally lubricate moving parts of jockey wheel mechanism (springs and lever) with silicone spray

Do these things and your Dyson will love you forever.

I’m a bit of a sucker for Dyson products.  They are well engineered products from the school of function over form and in my opinion, objects of art.

This Dyson wasn’t very well when it was admitted to the workshop.  The owner had complained that the vacuum cleaner wasn’t picking up dirt and dust properly.  The beaters were not spinning either.

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FixItWorkshop, Worthing, May’19, Dyson DC40 beater head.

The beater ‘head’ is attached to the main body of the vacuum cleaner and is held in place with a sliding clip.  The head can rotate and move to allow maximum control.  The beater roller is driven not via a belt from the main motor, but from its own smaller motor in the head unit.  So, there is an electrical connector between the main body and head unit.  As the beaters were not spinning, it seemed sensible to test the electrical connection.  Upon testing, it was not working.

The mechanism on this vacuum cleaner is quite complicated and relies on levers and joints working in harmony.  Dismantling the wheels, filters, brackets and covers around the motor revealed the problem.  The supply that feeds power to the beater head is routed around the motor and sliding lever mechanism and a broken cable was to blame for the beaters not spinning.

Access was difficult due to the design so rather than completely tearing down the body to replace the supply loom, I reattached the broken wire with some soldering and heat shrink to make a robust repair.

After carefully rerouting the cables and reassembling the body, wheels and beater head, the beaters spun once more.  Result.

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After a new set of filters were fitted and a light service, the machine was as good as new.

Cost of replacement machine:  £000’s.  Cost of repair parts: £11.69 plus my time and two teas.

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.

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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.

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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.

Bissell Powerlifter Pet noisy roller beaters

Now, some of you will remember that I’ve written about a similar issue before, but I think it’s worth covering again as often, complete replacement items need to be purchased, which can be costly.

This Bissell Powerlifter Pet vacuum cleaner had snapped a belt, due to an obstruction in the roller/ beater area and while the casing was open to replace the belt, I removed the beater to see how smoothly it turned.  It was noisy.

Seemingly, Bissell will only supply a complete unit for around £30, with shipping, so given the overall value of the machine, it seemed sensible to have a look at the noisy component on the bench.  The bearing housings, located at each end of the roller, come out easily and with some careful manipulation, each bearing can be removed.

On this unit, both bearings were dirty and dry.  Now, I could have replaced them with a generic bearing, but in the spirit of thrift, I decided to clean the bearing races with brake cleaner and then repack with high-melt-point grease.  When reassembled to the roller/ beater, it ran very smoothly and was much quieter, once re-fitted to the vacuum cleaner.  Job done.