[Amps] Help with Henry Amp mechanical challenge

John Simmons jasimmons at pinewooddata.com
Fri Oct 19 12:36:12 EDT 2018


I had a 2K-2 and had a similar problem removing the knobs. Turned out 
the screws were a splined allen, commonly known as Bristol. You can buy 
a set of Bristol wrenches from eBay. My set went when I sold my amp.

73,
-John NI0K

Mike & Becca Krzystyniak wrote:
> Greetings,
>
>
>
>      I am repairing a Henry 1KD5 for a friend.  It was a 80-15m model that
> was upgraded to 80-10m and no longer worked on 40-20m.  I found that the cam
> shaft switches used for fixed tank C were not band aligned with the
> bandswitch leaving padder caps in place on 40/20m.
>
>
>
>      Simple to fix right?   My problem is I went to loosen the shaft coupler
> and looked for the allen screws.  Difficult for me to see but with some
> visual aids I see that this amp has what looks like a phillips spline type
> screw.  Approximately 2mm or 0.079" inside the shaft fit, but it appears to
> be a X shaft spline.  What is the proper name for this screw and tool that
> would be used to remove it?
>
>
>
>      Also there are 4 screws, 2 each on 90 degree offsets.  Two I can get to,
> and the other 2 are accessible maybe with right angle tool, like an allen
> wrench was made to do.   Any hints on access or maybe swap the couple out
> completely for one that uses standard hardware.
>
>
>
>      Many thanks in advance from the not mechanically inclined.
>
>
>
> 73's   Mike K9MK/5
>
>
>
> Off reflector email:   k9mk   at   flash   dot   net
>
>
>
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