[R-390] R-390A gear train

[Norman Ryan via R-390]

Hi, All,

Scott Seickel's gear train tutorial is pure gold.  Discount it at your peril.  End of story!

R-390A RF Deck Gear Train Rebuild

  
             
R-390A RF Deck Gear Train Rebuild
Scott Seickel rebuilds an R-390A RF Deck Gear Train and 
shares his photos and step by step instructions. Assembly 1 Assembly 2 Assembly 3 Assembly 4 A...  
View on militaryradio.com Preview by Yahoo  
  

Best,
Norman



On Monday, August 11, 2014 12:29 PM, Chris Farley via R-390 <r-390 at mailman.qth.net> wrote:
 

>
>
>In a word, no.  
>
>Keep track of where everything came from, but position will need to be all reset regardless.  Some could be off now and not even know it, anyway.  Compile that with reassembly, even if you marked shaft positions along with where the gears mesh-  one tooth off here, one tooth off there, by the time you get to the end you could be so far off it's not even funny.  Heed the wise advise given here many times before, along with following the tuturial below (it is also basically echoed in the Y2K tutorial but the photos are higher resolution here):
>http://militaryradio.com/r390a-rfdeck-geartrain.html
>
>
>Good luck
>
>Chris kc9ieq
>
>
>
>
>
>________________________________
>From: rbethman <rbethman at comcast.net>
>To: R-390-List <R-390 at mailman.qth.net> 
>Sent: Sunday, August 10, 2014 7:22 PM
>Subject: [R-390] R-390A gear train
>
>
>Okay,
>
>I want to mark the position of ALL the gears in the current position, 
>prior to taking it apart for the degrease step, to be followed by 
>ultrasonic cleaning in the small one from Harbor Freight.
>
>Yes, it will take time since it only holds a pint of fluid.  It doesn't 
>matter how many runs it takes.
>
>My concern is getting it all back together without messing up the 
>position of the entirety.
>
>I don't want issues that I can't recover from.
>
>Is scribing the point of mesh between all or any faces a good method?  
>Or is this mass overkill?
>
>Bob - N0DGN
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