[Heathkit] [Heath] Ready --> Lubing / Unsticking' the SB-401 LMO

[Ron]

A beer!

> On Aug 5, 2014, at 8:18, Ronald Carlson <ronald.carlson.54 at sbcglobal.net> wrote:
> 
> 
> Be sure to keep smiling and write down for the group any new words that just might get invented...
> 
> 73, Ron
> 
> Sent from Yahoo Mail for iPhone
> 
> From: Robert Myers <rsmyers at rogers.com>; 
> To: <heathkit at yahoogroups.com>; <heath at puck.nether.net>; <heathkit at mailman.qth.net>; 
> Subject: [Heath] Ready --> Lubing / Unsticking' the SB-401 LMO 
> Sent: Tue, Aug 5, 2014 3:05:49 AM 
> 
> My SB-401 LMO ...
> 
> On hand I have some Liquid Wrench, Mean Green, a jug of Anhydrous Isopropyl
> Alcohol (99.997% pure), Teflon grease (and Teflon needle dispense liquid),
> Caig Labs DeOxit 5% spray, and DeOxit 100% needle dispensed,  Caig Labs 'Pro
> Gold' 5% spray,  Isopropyl alcohol in a compressed cylinder, compressed air,
> Syringe of silver conductive grease (from MG Chemicals), Singer Sewing
> machine oil, and dental tools :)
> 
> I am ready to take on my SB-401 LMO.  Am I missing anything?
> 
> Thanks for all the advice, everyone.
> 
> Regards,
> -- Rob Myers, VE3JQL
> 
> -----Original Message-----
> From: Heath [mailto:heath-bounces at puck.nether.net] On Behalf Of Kenneth G.
> Gordon
> Sent: July-28-14 7:25 PM
> To: Mark V Johnson
> Cc: Heath at puck.nether.net
> Subject: [Bulk] Re: [Heath] Lubing / Unsticking' the SB-401 LMO
> 
> On 28 Jul 2014 at 10:47, Mark V Johnson wrote:
> 
> 
> > When I read your first post I would have thought the problem was not 
> > sticking end to end lock tabs, or washers, but a misaligned dial.
> 
> I have had to deal with the sticking lock tabs at least twice.
> 
> > I've seldom had problems with the slip disc's.
> 
> As I said, I have had problems with those things at least twice: both times,
> cleaning the old lube out of them, and relubing with something better fixed
> the problem
> 
> > If you have the LMO out of the radio and want to fix any chance of 
> > intermittent function due to the variable capacitor contact wipers 
> > being dirty or worn, I'd recommend a fix I've used on all my Heath 
> > gear and that is soldering a small piece of braided wire directly to 
> > the variable cap rotor and the grounded frame.
> 
> I have found this to be absolutely necessary this many years after the LMOs
> were made. I highly recommend it. 
> 
> > It's easier with the tube LMO's but certainly doable on the SB-102 
> > solid state units. Worth the effort.
> 
> Yes. WELL worth the effort.
> 
> Ken W7EKB
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