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

[Kenneth G. Gordon]

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