[R-390] Knob Removal

[chuck.rippel at cox.net]

Dave,

I'll second what been said.  You may well find that the Bristo-spline 
socket screw has been removed and replaced with a hex.  It also may be 
stripped.

In the case of the latter, turn the knobs so that the access hole is 
facing down, turn the radio on its side and drill out the screw.  Be 
careful not to damage the full-circle clamp; they are becoming rare.

--
Chuck Rippel

"Many of the truths to which we cling depend on our point of view."
- Yoda




On Fri, Sep 27, 2013 at 12:00 PM, r-390-request at mailman.qth.net wrote:

> Today's Topics:
>
>    1. Knob removal...cont'd (R. David Eagle)

> Thanks to all for your input as I progress in restoring my first 390A!
>
> I recently purchased a small set of Bristol wrenches to remove the 
> knobs...ya know the type....little and not very fun to work with.? I 
> have been successful in removing all but the two main tuning knobs.? 
> It appears as though they are either stripped out or my wrench is two 
> small.? I can't imagine that they would design those knobs with a 
> different size set screw.
>
> anybody had the same issue?? If they are stripped, any tips on how to 
> get those out of there?? It's not like they are easily accessible..
>
> Thanks again,
>
> Dave