[Heathkit] LMO

Thu, 22 Apr 2004 06:55:01 EST

** Reply to note from kb7rgg Thu, 22 Apr 2004 04:05:37 -0400 (EDT)

> Next question: the LMO shaft feels like the bearings are dirty (or shot). I  
> have the panel off. The roughness is definitely felt in the shaft extending out of the  
> LMO. I've never seen anything on the internals of the SB-102 LMO. I am preparing  
> myself for the dive into that thing. Anything I should be aware of like {quot}rare element  
> smokium inside{quot} or {quot}forget linearity now{quot} or {quot}watch out for shooting springs{quot}? I have  
> very little fear (and not much to lose) so I'm going in there tonight unless I don't finish  
> my wife's honey-do list. I watched someone do an R390-A PTO once so how bad  
> could it be? 

It's bad.  The LMO is not built to be repaired.  It's built up in
layers. The tube LMO is easier to work on.

Couple obvious points. Don't bend the plates.  Don't adjust the
trimmer.  Don't unsolder anything or move it.

I'm guessing that a good shot of De-ox-id, contract cleaner and
contact lube will help.  That shaft drives a worm gear.  The problem
is there, in the capacitor bearings, or under the flat spring that
touches the rotor shaft. 

I have some notes on www.kiyoinc.com/heathstuff.html on the LMO.

de ah6gi/4