[R-390] R-390A gear train rebuild

Stan Gammons s_gammons at charter.net
Sun Oct 22 21:25:56 EDT 2017


Never mind, I figured it out after looking at the TM.  Appears as though 
I have a problem with the final differential gear though. The brass gear 
on the front doesn't turn.  Does that gear solder to the bronze center 
bushing?


73

Stan
KM4HQE


On 10/22/2017 06:14 PM, Stan Gammons wrote:
> Hi Everyone,
>
> I ended up replacing the gear clamps with some from a parts RF deck I 
> got from a list member.  Thanks Russ!  Now I'm reassembling the gear 
> train following the gear rebuild document on the R-390A.net website. 
> The steps for re-installing the final differential gear don't seem 
> right though. I don't see an easy way to load the split gears on the 
> 2-4 Mhz slug rack which mates with the rear gear on the final 
> differential gear if one has the 1-2 Mhz gear installed. It looks like 
> it's going to be hard enough to load them even without the 1-2 Mhz 
> gear installed.  But, the gear rebuild instructions do not mention 
> loading the 2-4 Mhz split gear though. Any tips on re-installing the 
> final differential gear?
>
> Thanks
>
>
> 73
>
> Stan
> KM4HQE
>



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