Removal & Installation
- Disconnect drive shaft. 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 pinion cage cover from carrier. Pry oil seal from bore, using care not to damage machined surface.
- Lubricate cavity between seal lips with bearing lubricant. Install new pinion oil seal into bore. Ensure seal bottoms against shoulder in bore. Install bearing retainer to carrier. Install pinion flange, pinion nut and drive shaft.
Courtesy of GENERAL MOTORS CORP.