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<body class='hmmessage'><div dir='ltr'>My biggest gripe and grief with the SB line of dials is the dual copper disc pressure system Heath engineers<br>dreamed up. You can almost always count on some day the discs either breaking from the shaft or loosening up<br>so the dial turning gets erratic or stops altogether. The engineers had a great dial mechanism on the single band<br>units. I don't know why they couldnt have designed the SB units using the same type of thing.<br>Disassembling and reassembling the drive units in the SB line has probably driven many a ham to drink, trying to<br>get the dial in between those two discs and getting the correct upward and downward pressure at the right location<br>and then tightening the nut without the shaft slipping out of place. I have uttered many a scream, added new flavor<br>to many age old cuss words and probably even invented a few new ones while working on the SB drive mechanism. HI HI<br><br><br><div>> From: rsmyers@rogers.com<br>> To: heathkit@yahoogroups.com; heathkit@mailman.qth.net; heath@puck.nether.net<br>> Date: Sun, 27 Jul 2014 19:12:58 -0400<br>> CC: rsmyers@rogers.com<br>> Subject: [Heathkit] Lubing / Unsticking' the SB-401 LMO<br>> <br>> Thanks to everyone for advice on 'unsticking' the SB-401 LMO that locks at<br>> 4-1/4 revolutions (as shown on the turns counter dial).<br>> <br>> A couple follow up questions: <br>> <br>> 1. What grease cutters or cleaners do people recommend for removing the<br>> dried, or thick, original lubricant. <br>> <br>> 2. What do people recommend for lubricating the system after step 1 (and do<br>> you need to use conductive grease anywhere in there)?<br>> <br>> Thanks,<br>> --- Rob Myers, VE3JQL<br>> <br>> <br>> ______________________________________________________________<br>> Heathkit mailing list<br>> Home: http://mailman.qth.net/mailman/listinfo/heathkit<br>> Help: http://mailman.qth.net/mmfaq.htm<br>> Post: mailto:Heathkit@mailman.qth.net<br>> <br>> List Administrator: Duane Fischer, W8DBF<br>> ** For Assistance: dfischer at usol.com **<br>> <br>> <br>> This list hosted by: http://www.qsl.net<br>> Please help support this email list: http://www.qsl.net/donate.html<br></div> </div></body>
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