Yes - I did that job a year ago or so. Had to buy bearings from a bearings specialist as washing machine spares not available. I don't remember any particular difficulty. I think I had to remove the pulley, mark undo 3 or 4 nuts on the through bolts that hold the motor together, pull the assembly apart having marked the casings to remember the alignment, withdraw the rotor from the bearing and then I was able to drive out the old bearing from the housing, press the new one in using a vice, and reassemble. The brush gear may have been a bit fiddly to reassemble - worth taking a photograph of any thing that might go back the wrong way. I think also that the the tachometer had to be removed from the brushgear end, which involved removing a dished washer which was a bit messy.
Flionus, July 2006