'88 4x4 (aka poor man's gator & off road toy) - the rear output shaft on my transfer case is loose and loosing fluid. I can shake my rear drive shaft at fore end and see the output flange move. Likely from stresses from driving w/a welded rear diff on the street + very high mileage. (was never supposed to be a street vehicle but finances have forced it.)

Question: is there an inner bearing where I can replace it w/o removing the transfer case. ie - maybe remove output flange, seal then a bearing?? If so how difficult & can it be done with a std bearing puller. Thx in advance for any help.