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Should be straight forward, most of them just held on with an o-ring/friction against the axle.
If you have rapidly failing main bearing or freehub bearing (and its hard to drift out/press back in a new bearing) then you are one of the many with badly toleranced hub. Have two of them in front of me right now.
It goes...
Bike shop notices a bad bearing, replaces it at cx cost, or cx sends wheel back to 'hunt'. Comes back with a weird undersize bearing to fix problem, which disintegrates within 3 months. Cycle repeats.
Most of them are fine, but noticed a trend that loads of the bores are too tight and it binds on the cart bearing causing premature failure. Hunt deny there is a problem.
Repeat.
I'm about to replace the freehub on a 3 year old Hunt rear wheel, mainly because it looks mighty hard to remove the freehub bearings without specific tools, I can swap the freehub myself without a bike shop involved, and there are a few bite marks on the freehub splines anyway.
Questions is, is there anything I can do to help reduce water ingress in future?