Andy, having done the job, my advice is DONT. It's a b**** of a job to do and most likely the drum shaft will have wear on it where it meets the shaft/bearing seal. Even when you fit the new shaft/bearing seal, a slight weep of water will still occur into the bearing set. Most likely, as in my case, it will last a month or two and let go again. It's not worth while buying a new drum shaft assembly, as it is expensive. In my opinion, its cheaper and will cause less heartache to go buy a new washing machine.
Tony, October 2005