Michael,
In my opinion one of the most difficult tasks on this car, and if not performed correct, big costly damages can happen to bearings and half shaft afterwards. Not sure so if the design has changed over time or not, but on my car it was not easy. In order to disassemble the disk you need to get the half shaft out of the bearings from the nuckle and on assembly re shim again the bearing play. The rear main nut needs to be locked again with 400Nm if I remember correctly. (I asked how strong to lock the guys where I purchased all spares in UK - there answer was f***ing tight! As this task was performed incorrectly by the previous owner of AK 1005 as the axial play was not correct, I had to purchase a entire new half shaft as well as all new bearings and seals. I can remember also that originally the shims are very thin and multiple will be needed. I decided to manufacture after knowing the thickness a single shim by a lathe. I know others on this forum had done the same as well. Don't know also why, but the shaft material is very mild steel and therefore will be the first to be damaged. This unfortunately is the most expensive part at the end as well. I can look up some pics if you like and send, if you provide email.
Regards, Heinz