[Vintage-Radio] Two more HRO questions

[Vic Rosenthal]

Jim Hill wrote:


> Years ago, there was an article written in the Old Timers Bulletin (AWA) by
> Bill Fisette (sp??) about removing HRO dials.  i just remember the main
> points.  Basically, he removed the center black knob while the dial was still
> installed by reaching behind somehow, then fabricated a wheel puller using
> some strong cord and ?? and pulled the dial off, upset and all.

Here is something I found about this at <http://www.io.com/~nielw/Hint.htm>:

> I have had success removing several stubborn PW dials with the following
> technique:
> 
> * tune the dial to "250" which aligns the screws holding on the plastic knob
> with holes in the metal parts 
 >
> * remove the three (?) screws holding the
> plastic knob - they must be accessed from behind the front panel of the
> receiver, which is tricky but possible 
 >
> * loosen the set screw holding the PW
> dial on the shaft 
 >
> * remove the plastic knob to reveal a pair of large holes
> in the large metal dial piece (the one that is attached directly to the
> shaft) 
 >
> * fashion a gear puller from a toggle bolt and two cable ties,
> threading the cable ties through the large holes mentioned above and looping
> them over each "wing" of the toggle bolt 
 >
> * align the toggle bolt in the axis
> of the tuning shaft and tighten the bolt slowly and carefully
> 
> From: "Mark Glusker" (glusk at mechcad3.engr.sgi.com)

I haven't tried it yet (I want to get all of the operational problems solved 
before moving on to the cosmetic aspects), but I will post my results.

-- 
73,
Vic, K2VCO
Fresno CA
http://www.qsl.net/k2vco