Either with a KR Wilson tool or bridge the banjo in a press and push on the case torque tube end with the small end of the pinion against a short shaft that will fit inside the small bearing and be stationary. The pinion, race and both tapered bearings will come out as a unit. You will need a large bore piece of pipe or something that will fit over the end of the pinion sticking out where the nuts go to push on the case that is larger in diameter then the pinion race. I know that is convoluted but basically you push the pinion out from the rear (small end)