Wheel Bearings

With wheel hub removed from vehicle, place suitable length of 1/2" bar stock behind INNER bearing cup and index in notches in hub. Using press tool against bar stock, press out cup.
Using suitable tool (J-22380), remove OUTER bearing retaining ring. Drive against axle shaft spacer, using splined flange end cut from an old axle shaft to remove OUTER bearing cup.
Place axle shaft spacer in hub, then insert outer bearing, with larger O.D. toward outside of hub. Position outer bearing cup in hub and press in until squarely seated. Install bearing retainer, then press outer cup into contact with retainer ring.
Using suitable tool (J-8093), press inner bearing cup into hub bore until seated against shoulder. Install new hub oil seal. Place hub assembly onto axle housing and install adjusting nut. Adjust rear wheel bearing. See Rear Wheel Bearing Adjustment in WHEEL ALIGNMENT Section.

Fig 1: Sectional View Showing Inner Bearing Cup Removal
Courtesy of GENERAL MOTORS COMPANY