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Home >> Chevrolet >> 1990 >> Step Van 7.4 N, Standard >> Repair and Diagnosis (Single Page) >> Drivelines & Axles >> Differentials & Drive Axles >> Drive Axle - ROCKWELL 12" >> Removal & INSTALLTION >> Hub Bearings >> Removal & Installation

Removal & Installation

  1. Raise and support vehicle. Remove axle shaft, axle shaft lock nut and lock washer. Using Wheel Bearing Nut Wrench (J-25510), tighten adjusting nut to 50 ft. lbs. (68 N.m) while rotating hub.
  2. Loosen adjusting nut 1/8 turn. Install lock washer and lock nut. Tighten lock nut to specification. Bend tang on lock washer. Install axle shaft and hub cover.


  1. With wheel hub removed from vehicle, use long drift or punch to drive inner bearing, race and oil seal from hub. Remove outer bearing retaining ring. Drive outer bearing out of hub.
    NOTE: Inner bearing race and outer bearing retaining ring must be removed before attempting to remove outer bearing race.
  2. To install, place outer bearing assembly into hub. Drive bearing past retaining ring groove in hub. Ensure chamfer of bearing race installer does not contact bearing race.
  3. Install outer bearing retaining ring, and drive race into hub until seated. Drive inner race into hub until seated against shoulder.
  4. Install new oil seal. Place hub assembly onto axle housing. Install adjusting nut, and adjust rear wheel bearing.
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