[Collins] 75S-3B Slug Rack

[W9HAK]

Hello Byron,

Byron I've sent you an e-mail with the photos. The
list will strip them from this message.

Attached to this e-mail are photos of my slug rack
during service, after 50 years since new. Notice
the red string tied to the spring clips. I do this
because they can vanish when being removed or
installed. There is an inner shaft and outer tube
and ball bearings between the two. Once everything
is disassembled it's obvious how it works. I
suspect the shaft has been pushed into the tube in
your case.

The beryllium strips, as well as the rollers they
run on, can be cleaned without disassembly of the
rack. Just be careful, the strips are delicate and
hard to replace. Be mindful that there is a single
ball bearing in the rear tensioner assembly. It is
just waiting to run off and hide.

Once your have cleaned and reassembled the rack
you will need to do the alignment procedure.
Follow the manual to the letter.

Smith Bradford
W9HAK

Byron Tatum wrote:
> Hello-
>     I am preparing to repair a 75S-3B slug rack assembly. I thought I would ask, 
> ahead of doing this work, if someone had the time to give me a little advice. 
> Here is the problem: The shaft of Preselector evidently has been struck and 
> driven into the assembly, the knob will not slide onto the shaft far enough to 
> stay afixed. There is only about 1/4" of the shaft protruding past the plastic 
> indicator piece that rides nearest front panel.
>     Years ago I believe I had apart one of the rack assemblies but at this 
> time but cannot recall the parts / assembly. I hope the slug rack assembly is 
> not permanently damaged.
>                                                                                 
> Sincerely, Byron WA5THJ 
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