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Author Topic: Miele S5261 Motor noise  (Read 7909 times)

Offline mastriv

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Miele S5261 Motor noise
« on: September 19, 2020, 03:19:31 pm »
The motor on my trusty, now 10 year old, Miele has started making grinding noises (smelt briefly of burning rubber).

Have broken down the cleaner - tried cleaning the motor with compressed air - a little bit better but not running smoothly. The motor still powers on and turns but not evenly and is very noisy.

I could try breaking down the motor completely - could be the commutator is gone or it needs new bearings?

So two questions - (a) does anyone know of instructions on how to break down/service the motor (looks a fairly closed unit - not sure how to get the metal cowling off) (b) know of where I could find a spare motor (seems difficult as pre EU power/wattage regs).

My skill level is fairly handy (have tools & multimeter) but now experience with vacuums :-(

MOTOR PART #:MRG 742/84-42/2


Offline MVacs

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Re: Miele S5261 Motor noise
« Reply #1 on: September 19, 2020, 03:57:59 pm »
Miele motors, like Dyson ones, are usually not of good enough quality that they are repairable. You'd normally change the motor.

You should be able to find a new or used one without too much difficulty, but new ones aren't cheap.

Offline macman

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Re: Miele S5261 Motor noise
« Reply #2 on: September 20, 2020, 08:48:10 pm »
Much more likely that the brushes have worn down, if you open it up it will be very easy to check them. All you need is a T20 driver to remove  the top of the housing and a suitable socket to undo the nut on the fan: from memory it's 13mm. The outer metal cowling is simply tapped off around the rim, friction fit only.
Remember that the nut on these is a left handed thread: you need to hold the fan steady and turn the nut clockwise to undo it.

Offline Cra351g

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Re: Miele S5261 Motor noise
« Reply #3 on: March 18, 2021, 07:03:48 pm »
Hi
I'm trying to repair a Miele cylinder motor
It seems to have trashed a bearing , does anyone know where I can source replacement ones or if they are fairly generic

Cheers Craig


Offline macman

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Re: Miele S5261 Motor noise
« Reply #4 on: April 04, 2021, 07:35:34 am »
I think you need a 608 2RS. Those are the ones with a rubber seal each side. The 608ZZ is the same but with metal seals.
22mm outer diameter, 8mm inner, 7mm height.
Best to check that against your own motor, but it's correct for an S5000 series. They may vary on other motors possibly.
Plenty of sources available on ebay.

Offline John_Deere

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Re: Miele S5261 Motor noise
« Reply #5 on: October 09, 2021, 04:30:09 pm »
Hi I have similar problem with my S5210, I'm interested to know how you got on with the bearing change?

Offline macman

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Re: Miele S5261 Motor noise
« Reply #6 on: October 09, 2021, 04:50:28 pm »
It's straightforward enough, you just need a suitably sized bearing puller. From memory, mine was about £12 on eBay.

Offline John_Deere

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Re: Miele S5261 Motor noise
« Reply #7 on: October 09, 2021, 06:31:44 pm »
Thanks, I go ahead and order a couple of sets tonight.
I have another problem to contend with, I've discovered one of the legs on the thermal cut-out in the motor had separated.
Process of elimination took me to it, it looked fine on the board with no sign of burning but after moving it a couple of times it fell off the board revealing a tiny black spot. So now I'm looking for a replacement Sensata Klixon 3MP3301 26D7SAAW.
Googling is not throwing up much, has anyone got an alternative component that could be fitted? A thermal cut out is a thermal cut out? Right?

Offline macman

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Re: Miele S5261 Motor noise
« Reply #8 on: October 09, 2021, 10:22:26 pm »
That's a common fault with Miele motors. If just one leg has detached, you can normally just resolder it back on, no great level of soldering skill is needed.
If you have to replace it, I'd be looking for a scrap machine and salvaging whatever you need from that.

Offline John_Deere

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Re: Miele S5261 Motor noise
« Reply #9 on: October 10, 2021, 07:43:41 am »
Thanks. That's my plan for this morning

Offline John_Deere

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Re: Miele S5261 Motor noise
« Reply #10 on: October 10, 2021, 03:29:21 pm »
Hi Macman, just for info, my 2nd Miele, a 1600w C3 also had the TCU burnt leg. Thats 2 out of 2 Miele with the same problem. Whilst they're apart I'm going to put new bearings into both and brushes in the 1600w one.
Regards

Offline Chris_T

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Re: Miele S5261 Motor noise
« Reply #11 on: October 24, 2022, 11:16:46 am »
Much more likely that the brushes have worn down, if you open it up it will be very easy to check them. All you need is a T20 driver to remove  the top of the housing and a suitable socket to undo the nut on the fan: from memory it's 13mm. The outer metal cowling is simply tapped off around the rim, friction fit only.
Remember that the nut on these is a left handed thread: you need to hold the fan steady and turn the nut clockwise to undo it.

Hi Macman,
I have had great success in replacing the brushes on my Miele s5261 2200w Cat and Dog. I turned it on one day and immediately it started making a popping sound and a there was an electrical smell coming from it.

I used these Youtube videos and the fix was really easy and cost £8 in parts :

https://www.youtube.com/watch?app=desktop&v=uFqadmvCJjg

then :


The law has changed and it is no longer possible to buy a 2200W vacuum cleaner so it's difficult to buy a new motor. For this reason it is important to be able to fix it. Ignore the references to it being difficult to fix, it's not, it's easy, but you need to know where to buy the brushes which is here :

https://www.amazon.co.uk/Cleaners-Brushes-30x11x6mm-Compatible-Cleaner/dp/B091PVLXFL




 

 

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