Thread Number: 35715  /  Tag: Recent Vacuum Cleaners from past 20 years
Miele Plus...S 251i Motor Question
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Post# 383384   1/1/2018 at 13:27 (201 days old) by funvacfan (Canada)        

funvacfan's profile picture
I picked this machine up recently...suction is great! When it runs, it has a loud grinding/whining noise.

So I did open it up to look at the motor. I can't tell anything from looking at it. It is very well sealed up. I can't even see where the carbon brushes would fit.

My question is: Is it more likely to be worn bearings or wearing brushes that would cause the noise?

I'm not interested in replacing the motor at the costs that I see on Ebay.

Thanks for anyones input...


Post# 383401 , Reply# 1   1/1/2018 at 16:25 (201 days old) by vacuumdevil (Denver)        

vacuumdevil's profile picture
So they put three different Motors in there if you can't see the carbon brushes and it's a cream color you most likely have a vortex motor. Usually pulling the fan out of that and cleaning that up will put the bearings Back in Balance. If the machine has a lot of dust in it the motor might have gone bad

This videos unreleased on my channel hope this helps.

Post# 383415 , Reply# 2   1/1/2018 at 21:26 (201 days old) by funvacfan (Canada)        
Super video!

funvacfan's profile picture
It is indeed a Vortex motor. How do you take apart the motor to clean the fan and or check the brushes?

Do you have any suitable replacement motors in your "bone yard"?

Post# 383417 , Reply# 3   1/1/2018 at 21:53 (201 days old) by vacuumdevil (Denver)        

vacuumdevil's profile picture
The Vortex Motors, delicate to take apart but definitely not impossible. Personally I use rubber mallet to tap the fan housing off. It's a reverse thread on the nut that holds the fan on and then you have access to everything I wouldn't bother checking the carbon brushes I have yet to see one that needs replacement. When it comes to Motors I always go new of course I'm in a position at work getting a new motor is relatively easy I have them on the Shelf.

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