first of all you have to make sure it is a split tub as some of them are now seam welded and bearings can't be replaced.If it is split then you need to take the whole carbon tub out and split it in half.knock the shaft through and then with a drift carefully knock the bearings out of the tub.you will also require a tub gasket.in worst case bearing failure you will need a new inner drum or a new shaft whichever you decide.NOT a 5min job and does require complete strip down.good luck!
ck
August 2010