Another handbrake Q

[347 mont]

Hi there evreyone. I'm looking for Au handbrake experts to help me out on what should be a relatively easy job, handbrake shoe adjustment. today I went about the job and took the rubber grommet out to get to the screw to do the adjustment but found the angle to the screw very awequid, so I decided to take the rotor off to make it accessable (and this is how my trusty Max Ellery's manual suggests.)All it say is to remove calliper and the retaining screw which I done but it wouldn't budge. Then I gave it some CRC treatment and a bit or a tap with a hammer, still no joy ( 40min later.) Then I went to Super Cheap to get a puller, tried but still didn't come off and I did'nt want to force it too much. So my question is does that large nut in the centre have to come off, I didn't think so, infact the manual doesn't even show that large nut in the pic for the rear rotors, only on the front and states thats the retaining nut for the front rotors.I thought it came off from the hub where the yellow arrows are shown on the picture, is this the case? So advice from experts in this field would be appreciated.My thoughts are if the puller didnt budge it there must be something else thats holding it on. Anyway sorry about the essay, and cheers for your help.P.S did a search and found some info but need more.