Any of the aftermarket service manuals will give you instructions for servicing wheel bearings. If you don't want to buy one (don't know why you wouldn't), you can copy the instructions down from one that you find in your local library.

1977 CJ-7, fiberglass body, AMC 360 w/ headers, DUI ignition, Edelbrock intake and Holley 4150 carb, TF999, Dana 300, 4.56 gears lockers, York air comp, 4" susp lift, 2" body lift, BFG 35" M-T tires, Megashifter, AGR pump & box, REP8000 winch.