[Heathkit] SB220 question

[Carl]

Why not take the caps out and adjust for proper torque?

I have many SB series knobs, email me direct.

Carl
KM1H


----- Original Message ----- 
From: <hudlerb1 at netzero.com>
To: <heathkit at mailman.qth.net>
Sent: Tuesday, March 13, 2012 3:31 PM
Subject: [Heathkit] SB220 question


> Hello list,
>
> I refurbished a nice basket case SB220 last year, working good on the 
> air......
>
> Question:
>
> The variable caps have gotten a bit hard to turn and they have essentially 
> almost ruined the two large knobs. The metal inserts are getting 
> loose/wobbly inside the plastic shells of the knobs, thus making 
> adjustments a bit tough on 10 M  (10 M is alive finally!)
>
> The set screws are tight, but the inserts are going to give up sooner or 
> later......the knob hubs are also splitting from the torque over the 
> years. When it was in the resto stage, I tried to clean and lube the 
> bushings of the variable caps, but obviously not good enough. I will need 
> to replace/repair the knobs and fix the tight bushings. Suggestions?
>
> Thanks Bruce
>
>
>
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