Replace BB cartridge in eccentric block

MichaelW2

Veteran
My hub gear bike had an aluminium eccentric block which rotates to adjust chain tension. The square taper cartridge bottom bracket is screwed into the block.

I need to replace the BB which is over 12 years old and probably siezed in place.
I can't wrench it out in situ, the eccentric will just rotate.

Any ideas?
 

I like Skol

Hold my beer and watch this....
Have you tried yet? Before worrying about the 'what-ifs' I would try removing the BB to find out the state of play, before trying to fix a problem that may not be an issue.
 
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