[Premium-Rx] Collins HF-2050

[Tom]

Hi Boris!
  I would caution against using silicone spray in electronics: When I was in industry, it was explained to me that silicones can break down into lesser products, i.e. Silicon Dioxide (SiO2), or sand!  It might be permissible to use it on a shaft, but I would rather use something like Kroil, or another penetrating oil to get a stuck part moving, then gradually work more light oil into it to flush out rust, and afterwards use a drop or two of heavy synthetic oil.  Just my two cents worth...
73,   Tom Herman, PhD., CETma. N1BEC/7

> From: ua3mcj at mail.ru
> To: cfuller1 at gmail.com
> Date: Fri, 24 Oct 2014 08:39:21 +0400
> CC: Premium-Rx at mailman.qth.net
> Subject: Re: [Premium-Rx] Collins HF-2050
> 
>  Hello Chris,
> 
> At first find location of bearing in main tuning shaft, spray it with Silicone Spray, rotate knob back and forth some few minutes it became ease to move after that.
> Then add  few drops of synthetic oil ( oil must NOT became dry with the time).
> 
> Make some inspection, probably  few more bearings there, if so do the same with them. 
> 
> Also check for rust in the shafts sleeves there, if yes, use rust remover.
> Remove dust, dirt with pressed air if compressor available. Remove all old, dryed grease if used in and replace with fresh one...Then enjoy with smooth tuning knob rotation...
> 
> B.R.
> Boris
> UA3MCJ
> 
> 
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