Hi Shaun
The wheel bearing will remain captive in the brake drum when you eventually get it off. The grease seal at the back of the bearing may displace but the new bearing will have one anyway. So - to remove that drum....
Try whacking the drum with a hammer on the side, turning it 90 degrees at a time. Then, prise a broad screwdriver between the back plate and the drum and use it as a lever - better still if you have 2 screwdrivers! Eventually (I hope) the drum will start to budge, but as I said before its likely to catch on the brake shoes, where they have worn a lip. Careful levering and turning of the drum should eventually cause it to come away - if not, you'll have to get hold of a puller that bolts onto the drum face, and remove the thing that way - but you do risk damaging the shoes and hold down clips.
John, May 2009
