Originally Posted by
dedhed
My WAG is that is some sort of crank length adjustment. Or possibly some folding bike thing to swing the pedals in.
What I would probably do is remove the locknut and cone so I can get to the presumably caged bearings and cut the cage to remove the old bearings and use loose balls for new
Thanks, but the bearing cage on that side was already split and I removed it, and I twice placed all the bearings in grease without the cage (not easy) and tightened it up, yet which at best worked for a few day until the bottom bracket got a little loose, and then we were back to being unusable.
This is not a folding bike, and the only function I can surmise for this is to enable one pedal to be switched to the other.
I have pressed and twisted and turned and yet nothing moved off.
The only image Google comes up with in searching for a image match is
