Originally Posted by
well biked
The whole plastic (nylon, I think) shell, which contains the cartridge bearings, is replaced. I have a bike with this type of bb, and we have quite a few of them in our shop. Shimano BB86 is similar in that the bearings are inside a nylon shell also.
Good to know well biked. So when y'all do change them, is there a way to pull/press them out or are they just hammered out? Does the shell come out with the bearing or in a seperate step?
The idea of hammering things out just bugs me... Ive seen a pic of the Park tool for the job, but it looks just like a punch that fits the bearing ID.