Re: [amsat-bb] G-5500 repair advice please

[n4xeo <n4xeo@xxxxxxxxxxxxx>]

Hi Mark and Groop



>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).

A white lithium grease will work well for the gears and bearings. Lust make 
sure it is water proof!



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

I would change the bearings out since you have it apart. You can get a bag 
with enough to have a bunch left over for around $5.00. You will see that 
there aren't a full race of bearings in the rotor. When you put the new 
ones in, just fill up the race (add more than what you had) and make sure 
that you have them VERY well greased. Make sure that when you put the 
retainer in that you have the split to the bottom.

When you put it back together, (after you clean it all up) make sure that 
you put a small bead of RTV on the case split ONLY on the top and 2 sides. 
Don't put any on the bottom.
I would recommend that you put the 2 halves together dry and run a small 
drill bit in the hole in the bottom and make it just a bit bigger. The hole 
is located in the middle of the bottom in the split where the 2 cases come 
together. This will let any water and moisture drain out.   Make sure that 
you put never seze or something like that on ALL of your bolting so they 
won't rust and freeze in place once you put it all back together.

If anyone wants any more info or tips on keeping their rotors in good 
shape, just through the questions out and I'll see if I can answer them for 
you.


73, Bill N4XEO

E- Mail mailto: n4xeo@amsat.org
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