It should come off,
1, remove wheel
2,remove brake and caliper
3, remove abs sensor
4, loosen ball joint nut and take off hub
5, drive shaft nut off and push out drive shaft
6, back of hub remove nut and bolt which squeezes hub onto shaft, split this open a bit
7, remove 3 bolts from swivel joint under hub
8, remove hub..
refit new hub.
This is from memory buddy, but that is basic.