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Re: [TenTec] TT PTO stuff

To: Discussion of Ten-Tec Equipment <tentec@contesting.com>, Stuart Rohre <Rohre@arlut.utexas.edu>
Subject: Re: [TenTec] TT PTO stuff
From: Bwana Bob <wb2vuf@verizon.net>
Reply-to: Discussion of Ten-Tec Equipment <tentec@contesting.com>
Date: Sun, 12 Nov 2017 21:37:40 -0500
List-post: <mailto:tentec@contesting.com>
My PTO and a rebuild kit I bought had green grease.  Earlier posts said that Ten Tec called it "open gear grease" that they bought at the local co-op. Some specs!

What is needed is a heavy (high viscosity) grease that won't dry out.  I tried lighter greases and they are not sticky enough; the spring tension on the PTO shaft causes the knob to turn spontaneously.


73,

Bob WB2VUF


On 11/6/2017 5:58 PM, Stuart Rohre wrote:
I believe the Ten Tec kit used a red grease.  It was a petroleum product as I recall.

However that is not important. What is, you want a grease that does not get hard over time and restores the lubricant properties without going hard again.

One of the best universal greases I have used for substitute PTO grease is Dow Corning 44 Ball Bearing, high temperature, grease.

Clean out all traces of Red
grease or whatever it was, and repack the PTO with Dow 44 on gear and moving surfaces that touch other moving surfaces.

OR, for a quick fix that should last the life of your interest in the radio, is to remove excess hard grease, and spray Triflow onto the old grease remaining to rejuvenate the lubrication and free up hard to move gear and worm parts.  Tri Flo has microscopic Teflon ball bearings which increases its lubricating properties. A little goes a long way.  I think I still have Tri Flo in a "trial size" that has done most of what I needed over the years.

Do NOT try to use WD40!!!  It is not an oil or lubricant, but a water displacement chemical (water displacement formula 40), that attracts dust and makes the problem worse if it is used.

-Stuart Rohre
K5KVH
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