[TowerTalk] Rebuilding an Alliance HD-73

[K0FF]

Aside from the mechanical aspects, don't over look the obvious..the motor
capacitor in the control box. K0FF
-----Original Message-----
From: Dan Levin <djl@andlev.com>
To: tower talk <towertalk@contesting.com>
Date: Monday, June 19, 2000 7:51 AM
Subject: [TowerTalk] Rebuilding an Alliance HD-73


>
>My father had this rotor in service for about 15 years.  When removed from
>service, it was "sticking" quite badly.  That is to say that it would
refuse
>to start much of the time.  Towards the end, pretty much all of the time.
>Once it started it worked fine.  He built a voltage booster for the motor
>line, which was moderately effective in improving the situation.
>
>When I removed this rotor from service, it tested out fine on the bench.  I
>stuck it in a box and forgot about it.  Now I need it to rotate my lower
>antenna for which I just built a sidemount this weekend.
>
>So I need hints for rebuilding an HD-73.  Suggestions of the form "send it
>to Norm" will be sent to /dev/null.  I would happily sent it to Norm, but I
>am feeling cheap at the moment :-)
>
>I have removed the bearings, and cleaned them.  I will inspect them, and
>replace any obviously bad ones.  I will check the teeth on the various
>gears.  I will verify that the various circuits in the rotor check out for
>resistance.
>
>Anything else that I should check?
>
>What grease should I use when I rebuild it?  Should I only grease the
>bearings themselves (and their races, obviously), or is there anything else
>that I should grease?
>
>The apparent cause of failure is "varnish" that has built up where the
upper
>part of the rotor mates to the lower part.  I will remove this "varnish" -
>should I lubricate this joint in any way?
>
>All hints appreciated.  Thanks!
>
>            ***dan, N6BZA
>
>P.S.  Don't forget the California QSO Party - October 7 and 8!
>
>
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>


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