hello , first remove the hub from the shaft (undo the middle nut) then remove the circlip then turn the hub over and apply some heat to the bearing caseing, then get a large socket and place it on the inner bearing and keep hitting it until it pops out (it will pop out!) once removed and cooled down rub the inside with some sand paper then coat the inner with some grease (this will make the removal of it next time more easy!) then place the new bearing in the ready position then use the old bearing to fit the new one (just place it on top of the new one and keep hitting it till it reaches home) hope this helps.
robert leonard eva, June 2008