Originally Posted by
Andrew R Stewart
IIRC the "cone" as seen in the first image is a threaded sleeve that fits within the cartridge bearing. The second image shows the sleeve removed, as well as the bearing dust shield removed.
I believe if you thread the axle into the sleeve and tap the free end of the axle the sleeve will be "forced" out of the bearing. The fit should be a snug sliding one, not an interference one like the bearing's fit in the hub shell likely is.
These are very nice freewheel hubs, perhaps the nicest design that still uses a common threaded axle. Well worth maintaining. Do be careful in the reassembly and final bearing end load though. With a threaded sleeve supporting the bearing's inner race one can easily end up with too much preload and not feel it if the ball tracks are still smooth. But in time the excessive preload will lead to pitting sooner then it should. With radial contact cartridge bearings as very slight end play, after the QR is tightened, is generally considered the proper way. Andy
Thanks Andy a re-thread and tap got it out.
Another question for you: after opening the cartridges there was alot of rust on the bearing races. Even after a thorough clean and re-pack after re-assembling there's still a little 'crunchiness' when I spin them - and this is even with no load on the nuts. I have a perfect set of cyclone hubs too which are absolutely glass smooth and like-new so I know these sprints should be the same when they're 100%. Do you think the rust has destroyed the cartridge bearings? Can these be replaced?
Thanks again!