[GreenKeys] 7470 oil

[Teletypeparts]

Dave,

I have the new hammers.  They arrived two days late.  I will get to testing them soon and get back to you.  

Thanks,

Wayne




-----Original Message-----
From: David Tumey <davetumey at yahoo.com>
To: Teletypeparts <teletypeparts at aol.com>
Sent: Fri, Apr 18, 2014 3:35 pm
Subject: Re: [GreenKeys] 7470 oil




Wayne,


Did you get those hammer caps OK, they show they were delivered?


Are they better than the softer versions?


--dave



From: Teletypeparts <teletypeparts at aol.com>
To: jhhaynes at earthlink.net 
Cc: greenkeys at mailman.qth.net 
Sent: Friday, April 18, 2014 3:32 PM
Subject: Re: [GreenKeys] 7470 oil




Jim,
 
I dont recall what we used for oil exactly.  Seems like it was in the metal pint cans.  I was able to get a can in the 1980's from Telemechanics.  I worked at WU from 1968 to 1974 if that helps.  I do know that some oils leave the varnish coating when the oil dries out.  
 
Again, the biggest issue today with machines that have sat for years is congealed grease and dried oil on codebars and other sliding parts.  Its the first thing to look for when restoring a machine that has not run in 5 or 10 years.  
 
73,
 
Wayne
KB1FDW





-----Original Message-----
From: Jim Haynes <jhhaynes at earthlink.net>
To: Teletypeparts <teletypeparts at aol.com>
Cc: greenkeys <greenkeys at mailman.qth.net>
Sent: Fri, Apr 18, 2014 3:24 pm
Subject: Re: [GreenKeys] 7470 oil


On Fri, 18 Apr 2014, Teletypeparts wrote:
 28's have so many felts that when I worked at WU I had a squirt can to oil
 them with.  Used a drip spout oiler for 32 and 33's. 
  
hen you worked at WU were you using KS-7470 oil or something else?
ranted that you were there fairly late in the history, and they may have
sed something else earlier.
The reason I am asking is that I have had some 2B printers that I had to
ake the selector apart and remove a green varnish-like substance from
he separator plates.  The green color suggests it was some chemical
eacting with the nickel plating on the parts.  So I've been wondering
f the official lubricant had that reaction, or if WU was using some other
ubricant and that was the cause of the varnish.
Back in the 1950s the RTTY magazines frequently warned us to use 
on-detergent oil on our machines, saying detergent oil would turn all
he springs green.  I don't know if this was based on actual experience
r someone's imagination.  In a pinch I've used detergent oil on a machine
airly recently and did not have anything turn green - but then detergents
ay have changed a lot in the intervening years.




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