[BC] Harris RF Contactor Maintenance

[Cowboy]

On Tuesday 09 February 2010 05:32 pm, Michael Heim, KD0AR wrote:

>  I was thinking that it might have been hardened grease in the bearing, 
>  causing the mech to be sluggish, but really, those really shouldnt be 
>  greased up.  There really isnt enough movement going on to create a lot of 
>  wear.  I'm tempted this spring to pull the contactor and replace the 
>  switches and soak the mechanical parts in a good degreaser, just in case my 
>  problem returns.     

 There are two reasons for the grease.
 One, is lubrication obviously, and the other is to coat the
 surfaces to prevent oxidation.

 Petroleum greases will lose the lighter components to evaporation over time,
 causing what remains to harden, becoming more glue than lube.

 Best, wash them with a good degreaser, then re-lube with something more
 modern that won't evaporate.
 Any present day 10W30 should be good.

-- 
Cowboy