[GreenKeys] M28 Motor Bearings

[David Stickelman]

Taking it apart isn’t too bad, maybe this procedure may help?  http://stickelman.net/index.php/2024/12/07/model-28-teletype-chasing-down-squealing-noises/

I used a silicone grease and it seems to be doing well, but someone with more experience may have a better recommendation.

There are oil channels but you may consider taking the motor apart to get to bearings if the oil grease has solidified.  The grease in mine was like old cosmoline or wax


Mobile

> On Nov 18, 2025, at 11:17 AM, Frankie Caswell <unluckyfett at gmail.com> wrote:
> 
> 
> Hi all, 
> 
> I've got a M28 that developed a noisy bearing. Seems to be coming from the fan side of the motor. Before I take it apart, is there a spot I should try to oil first? There's oil/grease fittings but the manuals says the bearings are "service free". Just looking for any insight before I tear it apart.
> 
> Thanks,
> Frankie Caswell
> KD2PEP 
> ______________________________________________________________
> GreenKeys mailing list
> Home: http://mailman.qth.net/mailman/listinfo/greenkeys
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:GreenKeys at mailman.qth.net
> 
>>>> Jordan Spencer Cunningham's GreenKeys Search Tool: https://teletype.net/gksearch
>>>> 2002-to-present greenkeys archive: http://mailman.qth.net/pipermail/greenkeys/
>>>> 1998-to-2001 greenkeys archive: http://mailman.qth.net/archive/greenkeys/greenkeys.html
>>>> Randy Guttery's 2001-to-2009 GreenKeys Search Tool: http://comcents.com/tty/greenkeyssearch.html
> 
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
> Message delivered to david at stickelman.net
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mailman.qth.net/pipermail/greenkeys/attachments/20251118/7d978357/attachment.html>