Hotpoint GEC Motor bearings (WM64)

[roperman]

Hi,
I've got a Hotpoint WM64 that is sometimes making a really high pitched bearing noise on spin. It sounds higher pitched/faster than the tub bearings which were replaced fairly recently.

I'm guessing its the motor bearings that are on their way out. I'll try and get a vid the next time it gets used.

Are the motor bearings still available, and how easy are they to replace?

Danny

 

[hotandpointy]

Hi Danny. The bearing type for these motors is 6001zz and is readily available on eBay and such for not very much. The rear bearing should be easy enough to remove with the appropriate tooling, however the spindle would need to be removed in order to extract and replace the front bearing. I have no idea how to do this, although the spindle does have a couple of flattened recesses, presumably for a spanner. I'm curious to know how to do this myself as I've just bought some spare motor bearings for mine for future replacement as necessary. Be nice to have the knowledge in advance xD.

Jae.

 

[keymatic3203]

Tool for pulley removal

Hi Danny and Jae

this is an extractor I welded up out of off cuts of steel angle section a couple of years back, the bolt effectively pushes the armature out of the pulley. so as you can see it's a tolerance fit, the flats on the pulley are a bit of a distraction as the pulley isn't threaded at all.

What of course I haven't yet made is a similar set up to push the pulley back on when the bearing has been renewed. Though I did manage to replace the pulley by heating it up with a blow torch to expand it, and then hammering it back on. Obviously a press to push it back on would be more a more satisfactory method as also you would have more control over how far the pulley is pressed onto the shaft.

 

[keymatic3203]

a

close up

 

[keymatic3203]

the armature

hope this gives you some ideas, I don't know of any hotpoint tool for doing thid job, I suspect they just sold new armatures.

Soory not to have added to your threads Jae, but well done on your hotpoint restoration, you've gone to a lot of work, you can look forward to enjoying using your machine for many years

Mathew

 

[roperman]

Thanks for the replies guys.

Pulled the motor off today and both bearings have had it. The rear one is rough as hell, and the front one is noisy.

I did find a spare brand new genuine armature that I had bought off ebay a few years back for 99p + £5 P&P so that is going in. I had intended to try and keep the original armature in if I could but I'm quite busy at the moment and the machine is in daily use so could do without it being out of action for a while. Treating it to new brushes before it goes back in.

Any thoughts on the condition of the commutator on the one i've pulled? Looks ok to me, gone quite silvery though, is this normal? Most i've seen have stayed copper in colour.

I've added a link to a video of the noise it was making too.

Danny

http://https//www.youtube.com/watch?v=8EcVzvf4dWo

 

[hotandpointy]

Hi again, apologies for the delayed response. That silvering is perfectly normal and is a result of carbon deposits from the brushes. All of the ones that I've seen (3) have been much the same, with varying degrees of colouration.

Mathew - Not to worry about adding to my threads. To be honest, the only reason for me posting stuff like that is in case what I've done is of any use to anyone else going through a similar process . One likes to be of service if possible xD.

Jae.

 

[nicam49]

Hi, just wanted to thank Mathew for his motor spindle removal tool pics... I've been trying to find out for a while now if it's screwed on or what.... certainly the flats on the end give the impression it is! The motor bearing on the commutator end is easy to remove with a wiper arm or battery terminal removal tool. A 15mm copper pipe is just the right size to drive the new bearing onto the shaft.

 

[keymatic3203]

Pleased

you found this old thread and were able to find an answer to your question. Hope it helps, they are certainly a tighter fit than ordinary bearing pullers would remove. All the best,

Mathew