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Hey all 😀
Something I can’t help but wonder…why does it seem to be that when the brushes on a Bosch washing machine motor wear out, it takes the motor with it? I had this happen on 2 machines. The first was 3.5 years old and under a D&G warranty, so they replaced the whole machine as they said the motor wouldn’t take new brushes. Not long after, the brushes failed in my mothers Hotpoint Aquarius, and this i found out had a Bosch style motor. That motor would not ‘accept’ the new brushes and was sparking all over the place.
The next Bosch i had was not insured, so after 3 years i replaced the brushes as a matter of course. Unfourtunatly, i did not get as much wear out of the 2nd lot, and got caught out after 2-and-a-bit years when the brushes wore. I bought new brushes but the motor wouldnt even power up. The guy in the repair shop tested the motor for continuity but there wasn’t any. He said he’d had this before.
And yet, when the brushes used to fail in my moms ‘old’ hotpoint (the one with the motors at the top), it was just a case of popping a new set in and off we go…just like i did with her Zanussi, some two years ago. But why not Bosch?
I have a new Bosch now, had it about 6 months…this one has a brushless motor and is sooooooooooooo smooth! 😀
Re: Bosch carbon-brush motors
bertieboo wrote:Something I can’t help but wonder…why does it seem to be that when the brushes on a Bosch washing machine motor wear out, it takes the motor with it? I had this happen on 2 machines.
The most likely explanation and regarded in the trade as something of a ‘common denominator’ in identical cases is simply over usage. Specifically high volume intensive use especially on ‘wash days’ when the machine doesn’t stop for hours. When, no sooner has the machine stopped at the end of the cycle a fresh load is put in and off it goes again!
Under these conditions, and when the brush wears down to the copper tag, intense localised heat is generated within the commutator segments and the insulation between each segment breaks down. The only cure at that stage therefore is a complete new motor.
In my experience most owners of machines that have failed in this way steadfastly deny any over usage. In total contradiction to the overloaded and soggy washing left in the machine and the piles of unwashed clothing heaped around the utility room.
And armature/motor failure is by no means confined to the Bosch brand. In fact each and every make of brush type motor is susceptible toward failing in exactly the same way.
Re: Bosch carbon-brush motors
Ah…..right. Thanks Martin 😆
Well hows this for a turn-out for the books… I DO and readily admit that i over-use my washing machine. Yes, its on all the time 😳
Re: Bosch carbon-brush motors
bertieboo wrote:Yes, its on all the time 😳
Your admission of guilt is accepted and forgiven henceforth! 😛
Re: Bosch carbon-brush motors
Cant remember the last time i had a Bosch motor fail after needing brushes. i agree they can and do fail but in my own experience its not common.
one mistake that is made when fitting brushes is to make sure the brushes go all the way in. recently I bought a 10 year old Bosch off ebay for £30, fault no motor turn. when I picked it up the owner said he had tried brushes but on inspection one of the brushes was jammed in the holder.
For some reason its always the rear right hand brush that needs a push to get it home
Also there is a toc in series with the aramture which can fail. This is not available as a spare part but the one out of the early hotpoint motors can be adapted and soldered inDave
Re: Bosch carbon-brush motors
electro, “down in martins country” round here we get approx 33{e5d1b7155a01ef1f3b9c9968eaba33524ee81600d00d4be2b4d93ac2e58cec2d} failure rate on bosch motors, and most customers are scrapping them, as they tend to see at least 5-6 years…
wasnt aware that you could raid the hotpoint motors for a toc tho, any chance you could pm me the model ranges i need to keep an eye out for as ive got a couple of wae24165s ive retained that need them 😀
Re: Bosch carbon-brush motors
I am afraid that in this house our washing-machine usage borders on the commercial side. I spend all day cleaning peoples homes and my partner is a nurse, thus our clothes all get washed at 60 degrees. And not a standard cycle either, a long extra-rinse cotton cycle.
Bedlinen i will not wash at less than 60 as it is not hygenic. There is a lot of that in one week too, as my dogs have a duvet on the floor which i wash weekly. In fact, i don’t wash much at less than 60.
And then there are my work cloths and mops 😳 About 3 times a week i boil-wash a full load of cloths and mop-heads. Time was, i actually had two washing machines plumbed-in and in use, the 2nd being a Hoover ‘european style’ top loader (the sort with 2 loading flaps in the drum)which was marvelous as i just used to drop the cloths right in from the bag. But since i moved, space is not what it was, so reluctantly i use one machine for all. But i do have one -a Daewoo which i bought in an ’emergancy’ when my Bosch broke- in the garage as a spare!
Best washer i ever had was a Boschg WFF2001, which my MIL is still using, 12 years after i bought it. Worst was a Whirlpool. I never ever felt it washed ‘properly’ and i was forever getting small items stuck bewteen the drum and teh door, where they’d sit for the whole cycles and not get washed 🙁 I really hated that machine 👿
Re: Bosch carbon-brush motors
Its worth noting that the Bosch motor in the Hotpoint WMA machines is a smaller, weaker one than the one found in most Bosch machines.
As for reliability I have repaired three Hotpoint machines this afternoon amongst my other calls.
One needed a new motor armature, one a new pressure switch and one had a broken wire on the thermostat which stopped the drain pump from running.
These machines are 9500 series machines, all between 21 & 25 years old. 8)
Re: Bosch carbon-brush motors
gandh1 wrote:wasnt aware that you could raid the hotpoint motors for a toc tho,
You can’t, it’s a bodge, besides this is a public thread, wouldn’t want the public thinking that the trade bodge things now would we. :rolls:
Re: Bosch carbon-brush motors
is it really a bodge though? surely bodging is bypassing it altogether. if both a hp toc and bosch toc are very closey rated, surely its a repair. and if electro has been having permanent success, its no more of a bodge than replacing a blue cap on a hp pcb. it would be interesting to know what the public thought, new motor or innovative skilled repair?
Re: Bosch carbon-brush motors
gandh1 wrote:if both a hp toc and bosch toc are very closey rated, surely its a repair.
They’re not and as I said before, it’s a bodge. 😡
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