Rear disc brakes 07 chevy 3500 dually

gmc
3500

#1

I’m trying to remove the rear disc/drum on my truck. I have removed the axle shaft, outer lock ring , nut and locking pin, but I still can’t remove the part. I looks like there is another retaining ring at the outer bearing, but it also appears to be part of the bearing race. Anybody got an answer?