Hi all, I've had a bunch with over lubed or incorrectly lubed gears, tuning racks and cams, and a few under lubed digital readouts, but fortunately nothing so bad as to seriously impair operation. I guess I've been lucky. And no worn gears.
Regards, Larry On Mon, Sep 2, 2024 at 8:16 PM Jim Whartenby via R-390 < [email protected]> wrote: > I think that the tendency is to over do gear lubrication, not under do > it. The Preliminary R-390 manual says "It must be remembered that over > lubrication can cause more harm then no lubrication." I tend to agree > having bought an R-390A from the late Hank Arney that was so over greased, > the kc and mc knobs were frozen. A lot of solvent, detergent and denatured > alcohol using an acid brush mounted on a dowel to get deep into the gear > works finally freed the binding. There was no need to do a complete > teardown. > > Our brother collectors of clocks do not lube gear teeth, just pivot > points, and sparingly. The thought is that grease attracts dust and dirt > which does more harm then good. In the half dozen R-390A I have reworked, > I have yet to find a worn gear. Has anyone? > > YMMV, > Jim > Logic: Method used to arrive at the wrong conclusion, with confidence. > Murphy > > On Monday, September 2, 2024 at 05:55:29 PM CDT, Barry < > [email protected]> wrote: > > While I have the RF Deck out, I'm going to clean and lubricate the gears, > rollers, etc. Reading the manual, apparently the from "apron" of the gear > train can be removed without all that much difficulty. If I remove that > apron, do the gears stay with the main part of the deck or does some of > them come off with the apron? > > I'm asking because, while I'm still considering a complete teardown (which > is just a bit more daunting than the A model which I've done before), it > might be good enough if I can maximize the exposure of the gears and just > settle for cleaning/lubing them in situ. Any comments on that? > > Thanks, > Barry - N4BUQ > ______________________________________________________________ > R-390 mailing list > Home: http://mailman.qth.net/mailman/listinfo/r-390 > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:[email protected] > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > > ______________________________________________________________ > R-390 mailing list > Home: http://mailman.qth.net/mailman/listinfo/r-390 > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:[email protected] > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html ______________________________________________________________ R-390 mailing list Home: http://mailman.qth.net/mailman/listinfo/r-390 Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
