[Boatanchors] National HRO-7 Chassis/Cabinet Disassembly Problem

[Jim Wiley]

Re:  PW Dial removal

Try a product that is marketed under the name of KROIL.  Kroil is a 
truly superior penetrating oil, useful for loosening all sorts of 
threaded mechanisms , bearings,  etc. Use a SMALL drop, perhaps two,  
and let time finish the job - in other words, apply Kroil, wait 
severalhours, and lock-screws or other similar stuff will loosen as if 
by magic.  What was once frozen will now come loose with only moderate 
force.

As the guy on TV says, "try it you'll like it"

Oh, and by the way,  absolutely nothing else is comparable.

- Jim, KL7CC



On 11/28/2017 1:43 PM, Bill Stewart wrote:
> GE All,
> An HRO-7 recently came into the 'black hole' here. It works, however the Phasing
> control is either shorting or opening up during its rotation and cuts out the signal.
> There is a pretty wide area of rotation that does this. I need to get into the phasing
> box. It has side plates and need to take off the outside one to get access to the phasing
> variable capacitor. Looks like all the knobs and dial must be removed to get the chassis
> out of the cabinet. The PW dial, with set screws loose, is not coming off. Any ideas on
> getting it loose....is it ok to carefully pry some on it. I don't want to mess up the dial or
> gear box. I may be able to put some liquid wrench down the empty set screw holes
> .....any other ideas?
>
> Thought I'd ask before I fouled up something....thanks.
> 73 de Bill K4JYS
>