Way back in the early 70s when I worked at Tektronix, we would wash 545s and the like in a pressure washer booth-if they were REALLY bad. You had to be really careful where/what you sprayed, else you'd lose thinks like the power transformer. We then used an airhose to blow the water out as best you could, same admonitions about the transformer(s). Finally there was a 48hr bake. I don't remember the temp. Generally, no matter how careful you were, the power transformer failure rate was probably 30-50%.
Ed Tanton website: http://www.n4xy.com All emails <IN> & <OUT> checked by Norton AntiVirus with AutoProtect -------------------------------------------------- Wag more / Bark less -------------------------------------------------- -----Original Message----- From: Steve Wedge [mailto:w1es1...@earthlink.net] Sent: Wednesday, November 30, 2011 10:05 PM To: n...@comcast.net Cc: drakelist@zerobeat.net Subject: Re: Baked Drakes Never leave the PTO, meter or any other plastics like that on the rig when baking. I always remove the PTO, meter, front panel and, of course all knobs and tubes. It's basically a stripped chassis when it gets its wash and dry. Never submerge - only wash with brushes and detergent, rinse thoroughly with the sink sprayer above and below, then pour distilled water over it. I take the rigs out to the shed before the oven for an encounter with an air gun. That will remove most of the water. Yes, you have to re-oil everything when you're done and on the A and B receivers I also recommend removing the PBT coil carriage after cleaning to clean the dried-out grease from the assembly. The equipment looks and smells much better and runs cooler. After 40 - 50 years, even a clean-looking chassis is hiding a lot of dirt. Steve Wedge, W1ES/4 "I can't complain, but sometimes I still do." - Joe Walsh If the above message appears, it came from Steve's Son of Laptop! ----- Original Message ----- From: "Ed Tanton" <n...@comcast.net> To: "'Steve Wedge'" <w1es1...@earthlink.net>; <Drakelist@zerobeat.net> Sent: Wednesday, November 30, 2011 9:46 PM Subject: RE: [Drakelist] T-4X: put on your thinking caps! Oven temp that won't harm plastic? I am going to need the same thing for several projects. I had simply planned to use "Warm" for 24 hours, but would love to hear your (or anyone else's) version Steve!!! Thanks. Ed Tanton website: http://www.n4xy.com All emails <IN> & <OUT> checked by Norton AntiVirus with AutoProtect -------------------------------------------------- Wag more / Bark less -------------------------------------------------- ///snip Ah, well, the T-4X is over in the corner for now and will require all my tools to troubleshoot. I started on the first of the two R-4B's tonight, have dismantled and washed it and it's now in the oven drying. 73, Steve Wedge, W1ES/4 ///snip _______________________________________________ Drakelist mailing list Drakelist@zerobeat.net http://mailman.zerobeat.net/mailman/listinfo/drakelist
