Dom,
Looks like you don't have to touch the hub.
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Did a 2003 KJ front & rear, Saturday and I think there's not much difference :
Get some axle stands - do not rely on your jack only Wheel off
***** Stick a wide blade scew driver between old pad and disc and push back piston(s) (gently). Otherwise your buggered and will be struggeling to put it back together. Caliper off
Disc might be held in place with one circlip on 1 stud.
Clean up, swap pads and re-assemble.
Did this without work shop manual. (Not telling you how to suck eggs but) As long as you think about what you're doing lay whatever you dismantle in chronological order on a clean rag.
If stuck, step back, have a beer & a fag......have a think and some *&^%$£"£***!!!!!!, carry on
Simpellls