“Shimano Silent Hub" FH-RO80 issues

RS_Pete

Retro Newbie
Hi, I have been pointed here from the road bike forum.
I have a Dawes Super Galaxy circ 1997. This was marketed as a touring bike and as such was equipped with componants often sourced from the MTB parts catalogue presumably for strength.

Now where I am having a problem is the rear hub/ freewheel and cassette. The hub is a “Shimano Silent Hub” and I believe this may be an FH-RO80. This appears to be seizing up..

So, my request for help and questions are

Can the freewheel part of the “Shimano Silent Hub” be rebuilt? (Also what tools are required)

Assuming it can’t, can another freewheel/hub fit and if so, what should I shop for?

Will this hub take current HG 8 speed cassettes? (I am curious as to what the differences are between CS-HG41/50/51 are when all offer various options including 11-32?)

IF (and I really hope this isn’t necessary) I have to replace the entire hub are there any recommended?

Many thanks in advance for any and all help
 
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