The procedure and necessary tools are covered in section J of the Workshop Manual. (You DO have the workshop manual, don't you?) Biggest difficulty is removing the eight (yes, eight, not six)-sided hex nut, #7 in Fig. J.2. I've seen the special socket for sale on Ebay, also info on this forum. I suggest you search for "hub nut" or some such to find it.
Otherwise the procedure is straightforward. Make sure to replace the gasket #5 with a new one and check the measurements as per Section J.4.