I've been swearing by Simple Green. The Scrubbing Bubbles might be a winner, as it has an alcohol base - which can dissolve some things that water can't.
BTW, for the PTO I steer clear of washing (except for the vernier) and clean out the bearing races and worm-screw with IPA and Q-tips, followed by a re-lube of the ball bearings with 3-in-1 oil and the worm and concentric shaft with Rem Oil. Use only mild soap on the frequency vernier! You should rinse the vernier it with distilled water when done and pat dry with a paper towel. For grungy C-Line and SPR-4 dual verniers, I suspect you'll have to disassemble them from the shaft if they're dirty to prevent gunk from getting between the two discs. And, of course, never grease any Nylon gears! 73, Steve, W1ES/4 -----Original Message----- >From: Curt Nixon <cptc...@flash.net> >Sent: Dec 1, 2011 7:39 AM >To: drakelist@zerobeat.net >Subject: Re: [Drakelist] Baked Drakes > >Same at Tektronix Richard.... > >I just saw pictures from a Hallicrafters restorer that swears by >scrubbing bubbles tub and tile cleaner. He apparently applies it at >least twice to all the bottom-side point to point wiring and also the >top of chassis with everything except the delicates taken off. THey >looked REALLY nice when he was done. I expect to give this a try here >soon as I am working on a 30S-1 sub chassis that is pretty gunky. Will >let the list know the result. > >Curt >KU8L > >On 12/1/2011 1:09 AM, Richard Knoppow wrote: >> >> ----- Original Message ----- From: "Robert Fish" <rwf...@comcast.net> >> To: "Steve Wedge" <w1es1...@earthlink.net> >> Cc: <drakelist@zerobeat.net> >> Sent: Wednesday, November 30, 2011 7:23 PM >> Subject: Re: [Drakelist] Baked Drakes >> >> >>> Hey Steve, >>> How long and at what temp? I would worry about getting water in the >>> IF cans etc. Does it just bake out? ? >>> >>> Thanks, >>> >>> Bob K6GGO >> >> >> I will repeat the method used at Hewlett-Packard many years ago. >> First step was to remove anything that could be damaged by water or >> heat. All closed compartments were opened. Then the chassis was rinsed >> with warm water from a hose. Then sprayed with a paint spray gun >> filled with a solution of water and dishwashing detergent and also >> brushed if necessary with a bottle brush. After washing it was again >> rinsed off with the hose and warm water. Then blown out with >> compressed air to remove as much water as possible. Then it was baked >> in a thermostatically controlled electric oven at about 130F for at >> least 48 hours. I preferred to keep stuff in there for a week if it >> was available. Then whatever was removed was replaced and the >> instrument checked on a metered variac. This procedure took off pretty >> much anything other than serious fungus (that stuff went to the >> factory and I don't know what they did with it). >> >> >> -- >> Richard Knoppow >> Los Angeles >> WB6KBL >> dickb...@ix.netcom.com >> >> _______________________________________________ >> Drakelist mailing list >> Drakelist@zerobeat.net >> http://mailman.zerobeat.net/mailman/listinfo/drakelist >> > >_______________________________________________ >Drakelist mailing list >Drakelist@zerobeat.net >http://mailman.zerobeat.net/mailman/listinfo/drakelist _______________________________________________ Drakelist mailing list Drakelist@zerobeat.net http://mailman.zerobeat.net/mailman/listinfo/drakelist
