On 12 Sep 2006 20:52:13 -0700, sargent wrote in .com:
I am working on the dial drive for this rig. The LMO is a TRW 800 651.

In setting the dial pointer to track across the 0-5 dial window, I have
found that the LMO only makes (4) 360 deg rotations, not 5, as called
out in the instructions. There are a series of 6 little "L" shaped
pawls on the LMO shaft. On rotation (1), the inner-most pawl is stopped
by a roll pin on the shaft bracket, but on rotation (2) it appears that
(3) of the pawls are stopped by the first pawl. There after, one pawl
is stopped by the preceeding pawl on each rotation.

None of the pawls seems to be distorted or bent in such a way as to
interfer with the rest passing over it as they should.

This description will probably make sense to an expert- I suppose not
to anyone else!

Anybody incounter this before??

This sounds much like the hardware that limits rotation on an R-390 or
R-390A Kilocycles knob to 10 (or is it 11?) turns, and which also is
subject to similar troubles.

With the LMO at one end of travel, so that all the pawls are free to
move, can you move them by hand to see what is causing them to hang
up when they shouldn't? If they're just gummed together by thickened
lubricant, it might be a fairly simple job (Ha!) to put a few frops
of carefully-chosen solvent on them and free them up.

--
Mike Andrews, W5EGO

Tired old sysadmin