<html><body><div style="color:#000; background-color:#fff; font-family:HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif;font-size:12pt"><div><span>As for adjusting the "pinch" drive, after one has done several, it does get easier. However, as for tightening the "pinch" mechanism itself, that is definitely harder to accomplish.</span></div><div style="color: rgb(0, 0, 0); font-size: 16px; font-family: HelveticaNeue, 'Helvetica Neue', Helvetica, Arial, 'Lucida Grande', sans-serif; font-style: normal; background-color: transparent;"><span><br></span></div><div style="color: rgb(0, 0, 0); font-size: 16px; font-family: HelveticaNeue, 'Helvetica Neue', Helvetica, Arial, 'Lucida Grande', sans-serif; font-style: normal; background-color: transparent;"><span>I have found that soldering the end of the shaft, while clamping the two halves of the "pinch" mechanism, usually gets it tightened up for a couple more decades. Of
course, one has to confine the solder to just the immediate area near the shaft.</span></div><div></div><div> </div><div>Glen, K9STH</div><div><br><br></div><div>Website: http://k9sth.com</div> <div class="qtdSeparateBR"><br><br></div><div class="yahoo_quoted" style="display: block;"> <div style="font-family: HelveticaNeue, 'Helvetica Neue', Helvetica, Arial, 'Lucida Grande', sans-serif; font-size: 12pt;"> <div style="font-family: HelveticaNeue, 'Helvetica Neue', Helvetica, Arial, 'Lucida Grande', sans-serif; font-size: 12pt;"> <div dir="ltr"> <font size="2" face="Arial"> On Sunday, July 27, 2014 9:13 PM, RAY FRIESS <rayfrijr@msn.com> wrote:<br> </font> </div> <br><br> <div class="y_msg_container">My biggest gripe and grief with the SB line of dials is the dual copper disc pressure system Heath engineers<br clear="none">dreamed up. You can almost always count on some day the discs either breaking from the shaft or loosening up<br
clear="none">so the dial turning gets erratic or stops altogether. The engineers had a great dial mechanism on the single band<br clear="none">units. I don't know why they couldnt have designed the SB units using the same type of thing.<br clear="none">Disassembling and reassembling the drive units in the SB line has probably driven many a ham to drink, trying to<br clear="none">get the dial in between those two discs and getting the correct upward and downward pressure at the right location<br clear="none">and then tightening the nut without the shaft slipping out of place. I have uttered many a scream, added new flavor<br clear="none">to many age old cuss words and probably even invented a few new ones while working on the SB drive mechanism. HI HI<br clear="none"><br clear="none"><br clear="none">> From: <a shape="rect" ymailto="mailto:rsmyers@rogers.com" href="mailto:rsmyers@rogers.com">rsmyers@rogers.com</a><br
clear="none">> To: <a shape="rect" ymailto="mailto:heathkit@yahoogroups.com" href="mailto:heathkit@yahoogroups.com">heathkit@yahoogroups.com</a>; <a shape="rect" ymailto="mailto:heathkit@mailman.qth.net" href="mailto:heathkit@mailman.qth.net">heathkit@mailman.qth.net</a>; <a shape="rect" ymailto="mailto:heath@puck.nether.net" href="mailto:heath@puck.nether.net">heath@puck.nether.net</a><br clear="none">> Date: Sun, 27 Jul 2014 19:12:58 -0400<br clear="none">> CC: <a shape="rect" ymailto="mailto:rsmyers@rogers.com" href="mailto:rsmyers@rogers.com">rsmyers@rogers.com</a><br clear="none">> Subject: [Heathkit] Lubing / Unsticking' the SB-401 LMO<br clear="none">> <br clear="none">> Thanks to everyone for advice on 'unsticking' the SB-401 LMO that locks at<br clear="none">> 4-1/4 revolutions (as shown on the turns counter dial).<br clear="none">> <br clear="none">> A couple follow up questions: <br clear="none">> <br
clear="none">> 1. What grease cutters or cleaners do people recommend for removing the<br clear="none">> dried, or thick, original lubricant. <br clear="none">> <br clear="none">> 2. What do people recommend for lubricating the system after step 1 (and do<br clear="none">> you need to use conductive grease anywhere in there)?<br clear="none">> <br clear="none">> Thanks,<br clear="none">> --- Rob Myers, VE3JQL<br clear="none">> <br clear="none">> <br clear="none">> ______________________________________________________________<br clear="none">> Heathkit mailing list<br clear="none">> Home: <a shape="rect" href="http://mailman.qth.net/mailman/listinfo/heathkit" target="_blank">http://mailman.qth.net/mailman/listinfo/heathkit</a><br clear="none">> Help: <a shape="rect" href="http://mailman.qth.net/mmfaq.htm" target="_blank">http://mailman.qth.net/mmfaq.htm</a><br clear="none">> Post: mailto:<a shape="rect"
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