[GreenKeys] Fwd: Re: UGC-74A melted rollers

[Bruce Gentry]

-------- Original Message --------
Subject: 	Re: [GreenKeys] UGC-74A melted rollers
Date: 	Sun, 09 Feb 2014 19:42:40 -0500
From: 	Bruce Gentry <ka2ivy at verizon.net>
To: 	Richard Johnson <killroy321 at hotmail.com>



The rollers were made from a 1970s miracle material- polyurethane. It 
can decompose almost overnight into goo, greatly accelerated by moisture 
and heat. I have had fairly good results using choke and carburetor 
cleaner to remove the goo, but it isn't easy and the solvent won't 
usually actually dissolve the goo. It does cause it to release some of 
it's stickness and turn to "buggers" that can be picked and scraped off 
the parts. It takes a lot of time and patience, but I have cleaned a few 
of the machines. I re-covered the roller assemblies with hose from auto 
and appliance stores, and it works well.  Wear old clothes and glove 
when doing this, the crud stains skin badly and is pretty much 
impossible to remove from clothing.

     Bruce Gentry, KA2IVY

On 2/9/14 7:08 PM, Richard Johnson wrote:
>
> I have a ugc-74a that is really nice except for the liquid that ran 
> down the paper and into the feed system.  The liquid used to be the 
> rubber coating on the roller that is chain driven to pull the paper 
> through.
> I am about to disassemble and remove the printer assembly to get the 
> paper out of where it is stuck  in the bottom.
> Any tips or hints?  (other than throw it away)
> Regards all
> Rich Johnson
> KI6EZA
>
> www.RichardSJohnson.net <http://www.richardsjohnson.net/>
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