[amsat-bb] G-5500 repair advice please

["Mark L. Hammond" <mlhammond@xxxxxxxxxxx>]

Thanks to some excellent advice from list users on how to debug my G-5500 
elevation unit, all indications suggest a problem inside, most likely the 
pot (all wires tested good to the rotator, etc.).

I ordered the replacement pot from Yaesu (ouch!  $30 or so), and have the 
elevation unit in the shack, opened up and ready for the repair.

Couple of quick questions to those who have successfully ;-) replaced the 
elevation resistor pot:

1) Any hints on how to pull off the replacement with few problems?  The 
only "clever" thing I could dream up was to use some modeling clay to hold 
the gears in place during the exchange of the pot.   I'm worried about 
losing "index" on the gear and pot position.


2) what type of lube is suggested for the gears?  Seems like a prudent 
thing to do while I have it split open.  There is a bit of rust on the 
bearings already (unit is only a bit over 1 year old), and there is some 
corrosion on other metal parts inside.  A bit troublesome to me...(I live 
in NC, so not much winter here).


3) any other tricks you can share for longer life/preventative maintanence?


Thanks in advance,

Mark L. Hammond  [N8MH]

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