[Milsurplus] Sleepy Dynamotor

[WA5CAB at cs.com]

In the past couple of years I have come across three NOSB GN-58-A's with 
one out of the four brushes swelled up and firmly stuck in the brush holder.  
Initial sympton was that you couldn't turn the cranks.  The first two were 
the same brush (- LV).  I haven't repaired the third one yet.  Repair is 
worse than in the typical dynamotor as you first have to remove the generator 
from the case (2-3 hours if lucky).  Then you're at the same starting point 
you would be with most dynamotors.  :-)

In a message dated 3/18/2011 3:50:56 PM Central Daylight Time, 
clare.owens at gmail.com writes: 
> It's unlikley but you could find a stuck brush so check to see whether 
> they
> move freely.  I've only seen one so far but it was a honey - I had to 
> remove
> the end frame and hammer it out of the brush holder.  Luckily I had proper
> spares and the spare fit nicely so maybe the original brush had a swelling
> problem?  Anyway I had a really swell time fixing it :-)  It flew over my
> workbench and I found it hiding on the carpet several months later.
> 
> Clare
> 
> On Thu, Mar 17, 2011 at 7:25 PM, Greg Mijal <bluebirdtele at embarqmail.com>
> wrote:
> 
> >Hi:
> >I want to fire up a 24 vdc dynamotor for a project here.
> >Can some one tell me what I need to do to make sure the brushes perform
> >properly?
> >I need to know: Technique and any chemicals involved for a clean up.
> >Thanks
> >Greg
> >WA7LYO
> >Kinston NC
> 

Robert Downs - Houston
wa5cab dot com (Web Store)
MVPA 9480