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Home >> GMC >> 2006 >> Sierra 1500 HD, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1331 (Rear Drive Axle) >> Repair Instructions >> Drive Pinion Flange/Yoke and/or Oil Seal Replacement >> Installation Procedure

Installation Procedure

WARNING: This page is about a different car, the 2009 GMC Sierra, 2009 GMC Cab & Chassis Sierra, 2009 Chevrolet Silverado, and 2009 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
    Fig 1: View Of Pinion Oil Seal
    GM1483208Courtesy of GENERAL MOTORS CORP.
  1. Using the J 22388:  installer, install the new pinion oil seal.
    2. Fig 2: View Of Pinion Yoke
    GM1483204Courtesy of GENERAL MOTORS CORP.
  2. Apply the proper sealant to the splines of the pinion yoke. Refer to Adhesives, Fluids, Lubricants, and Sealers .
  3. Align the reference marks and install the pinion yoke.
    4. CAUTION: Refer to Pinion Flange/Yoke Installation Caution .
    NOTE: Tap the pinion yoke until a few threads show through the pinion yoke.
  4. Using a soft faced hammer, seat the pinion yoke onto the pinion shaft.
  5. Install the washer and a NEW pinion nut.
    6. Fig 3: Holding Pinion Yoke With Special Tool
    GM661080Courtesy of GENERAL MOTORS CORP.
    NOTE: If the rotating torque is exceeded, the pinion will have to be removed and a new collapsible spacer installed.
  6. Holding the J 8614-01:  holder, tighten the pinion nut until the pinion end play is just taken up.
  7. Rotate the pinion while tightening the nut to seat the bearings.
    8. Fig 4: Measuring Pinion Rotating Torque
    GM661077Courtesy of GENERAL MOTORS CORP.
    CAUTION: Refer to Fastener Caution .
    NOTE: Compare this measurement with the rotating torque recorded during removal.
  8. Using an inch pound torque wrench and tightening in small increments, measure the rotating torque of the pinion until the reading is greater than 0.40-0.57 N.m (3-5 lb in), the rotational torque noted at removal.
    9. NOTE: Recheck the rotating torque and adjust if necessary.
  9. Once the specified torque is obtained, rotate the pinion several times to seat the bearings.
    10. NOTE: Reference mark the rear propeller shaft to the rear axle pinion yoke.
  10. Install the propeller shaft.
    11. NOTE: The following procedure is for the 10.5 or 11.5 inch axles.
  11. Install the rear axle shafts. Refer to Rear Axle Shaft and/or Gasket Replacement .
  12. Install the rear brake drum, if equipped. Refer to Brake Drum Replacement .
  13. Install the rear disc brake rotor, if equipped. Refer to Rear Brake Rotor Replacement (JD9) or Rear Brake Rotor Replacement (JH6) or Rear Brake Rotor Replacement (JH7) .
  14. Install the rear tire and wheel assembly. Refer to Tire and Wheel Removal and Installation .
  15. Inspect and add axle lubricant to the axle housing, if necessary. Refer to Rear Axle Lubricant Level Inspection (8.6, 9.5 LD Axle)  or Rear Axle Lubricant Level Inspection (10.5 Inch Axle)  or Rear Axle Lubricant Level Inspection (11.5 Inch Axle) .
  16. Remove the support and lower the vehicle.
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