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Title: How To Loosen Frozen or Stiff Trimmer Capacitors Post by: W1RC on June 29, 2015, 12:08:17 PM Found this on a site for the restoration and operation of (mostly) German and enemy tube radios but thought it would be useful to us as well. Go here to review the procedure, Start at the second post:
http://www.wehrmacht-awards.com/forums/showthread.php?t=418145 73, MrMike, W1RC Title: Re: How To Loosen Frozen or Stiff Trimmer Capacitors Post by: WBear2GCR on June 29, 2015, 10:05:34 PM For me... AMfone - Dedicated to Amplitude Modulation on the Amateur Radio Bands
First line of attack for normal stuck shafts is a penetrating oil. When that fails, I go to solvents, since it usually gummed up petroleum based lube that is the issue. A good, very good, de-gumming concoction is a mixture of lacquer thinner and ATF (tranny fluid). Works wonders on rusted parts too. The ATF has all sorts of neat additives and the lacquer thinner makes it thin, so it penetrates well and softens goo nicely. Not too bad on rubber parts either, since the ATF has "conditioners" for seals, which are rubber. Whenever it is not to difficult I prefer to strip out the old petro based lube and apply synthetic of appropriate type and grade. Never gums again. |