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Home >> GMC >> 1983 >> Forward Control 5.7 M, Automatic, 475/M40 >> Repair and Diagnosis (Single Page) >> Drivelines & Axles >> Differentials & Drive Axles >> Drive Axle - 12" >> Removal & Installation >> Pinion Flange & Seal >> Removal

Pinion Flange & Seal: Removal

  1. Disconnect drive shaft and tie out of the way. Scribe a line down pinion nut, pinion stem and pinion flange for reassembly reference. Remove pinion nut and pull pinion flange from stem. See Fig 1 . Remove oil seal retainer bolts, and remove retainer from carrier.
    Fig 1: Removing Pinion Flange from Rockwell 12" Axle
    G28848
    NOTE: Do not use hammer to drive off flange.
  2. Remove bolts holding oil seal retainer to carrier. Remove retainer and pry out oil seal from bore, using care not to damage machined surface.