|[AMRadio] looking for HRO tuning knob|
k4kyv at hotmail.com
Wed Jun 14 11:21:30 EDT 2006
What usually happens with the HRO dials is that the setscrew scores the
shaft, and the burr keeps the knob from coming off. I have always managed
to get them off, but sometimes with great difficulty. I just recall pulling
forward on the knob and finally working it loose. Sometimes it will rotate
on the shaft, but not come forward. Avoid rotating the knob on the loose
shaft; that will score a ring around the shaft and make it even more
difficult to come off.
I have never had to actually destroy a dial to get it off the shaft. I just
tapped on the front of the knob, then pulled on it, and eventually got them
to slide off.
Early models had only one setscrew. Later models had two, located 90
degrees from each other.
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