[1000mp] SOLVED: main tuning knob seized up, cannot remove ring to access set screw and lubrication points

[Marcia Stockton]

Thank you very much to the several hams who have given helpful advice 
over the past few weeks.  Here's a status update.

(1) Removing the rubber ring was straightforward, after seeing the 
exploded parts diagram and understanding that it wasn't the shuttle jog 
ring to be removed, but rather a knob-shaped rubber cap enclosing the 
main tuning knob.

(2) Lubrication of the tuning/encoder/bushing/shaft gizmo:  I have 
worked and worked on that shaft with light oil, WD-40 penetrating oil 
(containing petroleum distillate which ought to seep into the bushing by 
capillary action), and Q-tips to wick out the dirty lube one drop at a 
time, and the knob can now be turned without difficulty, but it still 
has resistance and will not spin freely with one finger as it previously 
did.  (Like the VFO-B knob still does.)   I had given up doing anything 
further, but Tom's idea to tilt the rig so it can flow by gravity is 
intriguing and worth another round of effort.

It may come down to replacing the gizmo, if I cannot tolerate the way it 
is working.  N1MM's up arrow, down arrow CAT fine tuning method has been 
a helpful workaround during these hardware problems.

Thanks Ed, Malcolm, Byron, and Tom!

73 Marcia N0RET