removing hub:
unbolt wheel, remove wheel
unbolt the 2 bolts on the caliper that connects it to the base of the suspension, or axle, whichever, theres only 2, cant really mistake them.
remove caliper and hang with wire from spring, no letting the hoses crack
.
remove the cap from the top of the disc if its there (large black cap), just wigle it and it will remove, try to pull the disc, 99% of the time it wont pull, so get a 8mm bolt and wind it into the thread thats there.
use say a 10mm spanner (or whatever fits the 8mm bolt), and wind it in unitl the disc will be pulled of. pretty easy really.
next, your left with the hub, and the bearing etc, there will be 2 large holes through the hub itself, stick say a single hex 14mm (i think its 14), around the hole, chuck through an extension and a farking large bar attached to it, undo all 4.
once you have taken all 4 out, chances are it also wont pull off. now to be honest with you i have no clue how ull get this off, but ive got a special tool, you bolt it up to the hub, and its got a pull thing, you just pull it, and it smacks the back handle, pulling the hub its bolted to with it.
basically, pull the sucker off, and your left with a hub, and wheel bearing, replace the bearing if you want as well, meh, if your rich and all lol, but theres your hub, simple put it in a vice (GENTLE), smack on top of the thread itself, it will pop through, get your new stud, tap it through (as said), and when you bolt the wheel back on, make sure you do it tight enough to pull that stud as far through as it can.
once the stud is on, bolt everything back on in the reverse order
, use lots of crc remember
, stuck bolts are bad bolts.