[R-390] PTO Problems

[Cecil Acuff]

I've started making it a habit of removing the desiccant bags from the PTO's 
I go into to remove this possibility.  The stuff has long since saturated 
anyway.  It could be regenerated I guess but no real point.

Mine live in an air conditioned shop.....as opposed to the jungles of 
Southeast Asia.

Cecil...
----- Original Message ----- 
From: "Craig C. Heaton" <wd8kdg at worldnet.att.net>
To: "'Jon Schlegel'" <ews265 at rochester.rr.com>; <r-390 at mailman.qth.net>
Sent: Saturday, November 03, 2007 9:02 AM
Subject: RE: [R-390] PTO Problems


> Jon,
>
> Yes, I've heard the stories about a bag, etc., used to contain the
> desiccant. In my PTO there seemed to be a rubber seal towards the end of 
> the
> PTO that holds the bearing for the shaft. The seal broke and let the
> desiccant move throughout the PTO. When I got to the third layer of
> disassembling the PTO; seal, desiccant, broken spring and all that good
> stuff dropped to the work bench.
>
> After getting the desiccant out of the PTO and off of the square thread of
> the shaft, just a smidgen of 90W synthetic oil should do the trick. The
> shaft will turn like hot butter, even after complete reassembly of the
> receiver. (the bushings in which the shaft(s) pass must be in alignment)
>
> I didn't have to mess with the corrector stack! A good cleaning, a little
> De-Oxit, seems to get everything back to square-one. As I check frequency 
> at
> every 100KC, all is well within spec, after adjusting the end-point.
>
> Craig,
>
> -----Original Message-----
> From: r-390-bounces at mailman.qth.net [mailto:r-390-bounces at mailman.qth.net]
> On Behalf Of Jon Schlegel
> Sent: Saturday, November 03, 2007 5:32 AM
> To: r-390 at mailman.qth.net
> Subject: RE: [R-390] PTO Problems
>
> Craig,
>
> The desiccant.  So that's what all that stuff is.  There is no
> evidence of any type of bag or container they use to contain that
> stuff and only now have I put it all together as to what happened.
>
> Is there a specific procedure for setting the compensation stack if
> it comes to that?  Also how easily should the shaft turn?  With the
> Oldham coupler plate removed, the shaft is turnable with my fingers
> but with difficulty.  This is the original reason I suspected a
> problem in the PTO.  What about desiccant?  Should I insert a new
> pack and if so, where?
>
> Jon
>
>
>
>
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