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Installation Procedure

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  1. Install the inner pinion bearing cup into the pinion gear bearing retainer using the J 37624  (2) and the J 8092  (1).
    Fig 1: Installing Drive Pinion Housing And/Or Seal (1 Of 10)
    G01456135Courtesy of GENERAL MOTORS CORP.
  2. Install the outer pinion bearing cup into the pinion gear bearing retainer using the J 8608 (2) and the J 8092  (1).
    Fig 2: Installing Drive Pinion Housing And/Or Seal (2 Of 10)
    G01456136Courtesy of GENERAL MOTORS CORP.
  3. Install the inner pinion bearing using the J 24433.  Press the bearing on until the cone seats on the pinion.
  4. Install a new collapsible spacer.
  5. Lubricate the pinion bearings with axle lubricant Use the proper fluid.
    Fig 3: Installing Drive Pinion Housing And/Or Seal (3 Of 10)
    G01456137Courtesy of GENERAL MOTORS CORP.
  6. Install the pinion into the pinion gear bearing retainer.
  7. Install the outer pinion bearing onto the pinion.
    Fig 4: Installing Drive Pinion Housing And/Or Seal (4 Of 10)
    G01456138Courtesy of GENERAL MOTORS CORP.
  8. Install a new pinion oil seal using the J 44414  .
  9. Apply sealant, GM P/N 12346004 (Canadian P/N 10953480) or equivalent, to the splines of the pinion yoke.
  10. Install the pinion yoke.

    Align the marks made during removal.

    NOTE: Refer to PINION FLANGE/YOKE INSTALLATION NOTICE in Cautions and Notices.
  11. Seat the pinion yoke onto the pinion shaft by tapping it with a soft-faced hammer until a few pinion shaft threads show through the yoke.
  12. Install the washer and a new pinion nut.
    Fig 5: Installing Drive Pinion Housing And/Or Seal (5 Of 10)
    G01456139Courtesy of GENERAL MOTORS CORP.
  13. Install the J 8614-01  onto the pinion yoke as shown.
    NOTE: Refer to FASTENER NOTICE in Cautions and Notices.

    Important:  If the rotating torque is exceeded, the pinion will have to be removed and a new collapsible spacer installed.

  14. Tighten the pinion nut while holding the J 8614-01  .

    Tighten 

    Tighten the nut until the pinion end play is just taken up. Rotate the pinion while tightening the nut to seat the bearings.

    Fig 6: Installing Drive Pinion Housing And/Or Seal (6 Of 10)
    G01456140Courtesy of GENERAL MOTORS CORP.
  15. Measure the rotating torque of the pinion Compare this measurement with the rotating torque recorded during removal.

    Tighten 

    Tighten the nut in small increments, as needed, until the rotating torque is 0.40-0.57 N.m (3-5 lb in) greater than the rotating torque recorded during removal.

  16. Once the specified torque is obtained, rotate the pinion several times to ensure the bearings have seated. Recheck the rotating torque and adjust if necessary.
  17. Determine the selective shim thickness for the pinion gear bearing retainer. Refer to PINION DEPTH ADJUSTMENT (8.6 INCH, 9.5 INCH AXLES)  or PINION DEPTH ADJUSTMENT (9.75 INCH AXLE)  or PINION DEPTH ADJUSTMENT (10.5 INCH AXLE)  .
    Fig 7: Installing Drive Pinion Housing And/Or Seal (7 Of 10)
    G01456141Courtesy of GENERAL MOTORS CORP.
  18. Apply sealant, GM P/N 1052942 (Canadian P/N 10953466) or equivalent, to the sealing surface of the pinion gear bearing retainer.
  19. Install the selective shim.

    Align the tab on the shim with the un-machined surface of the pinion gear bearing retainer.

  20. Apply sealant, GM P/N 1052942 (Canadian P/N 10953466) or equivalent, to the surface of the selective shim.
  21. Install the pinion gear bearing retainer.
  22. Install the pinion gear bearing retainer bolts.

    Tighten: 

    Tighten the pinion gear bearing retainer bolts to 88 N.m (65 lb ft).

    Fig 8: Installing Drive Pinion Housing And/Or Seal (8 Of 10)
    G01456142Courtesy of GENERAL MOTORS CORP.
  23. Measure the rotating torque of the pinion and the ring gear. Compare this measurement with the rotating torque recorded during removal.

    Specification 

    The rotating torque of the pinion and the ring gear should be between 3.9-6.2 N.m (30-55 lb in) for new bearings or 2.8-5.6 N.m (25-50 lb in) for used bearings.

  24. If the rotating torque of the pinion and the ring gear is not within specifications, adjust the preload of the pinion or the differential side bearings as necessary.
    Fig 9: Installing Drive Pinion Housing And/Or Seal (9 Of 10)
    G01456143Courtesy of GENERAL MOTORS CORP.
  25. Install the propeller shaft (3) to the pinion yoke (4). Align the reference marks made during removal.
  26. Install the propeller shaft yoke retaining clamps and the bolts.

    Tighten: 

    Tighten the propeller shaft yoke retaining clamp bolts to 25 N.m (18 lb ft).

  27. Install the axle shafts. Refer to REAR AXLE SHAFT AND/OR GASKET REPLACEMENT  .
  28. Fill the axle with axle lubricant. Refer to LUBRICANT REPLACEMENT - REAR DRIVE AXLE (8.6 INCH AXLE)  or LUBRICANT REPLACEMENT - REAR DRIVE AXLE (9.5, 10.5 INCH AXLE)  or LUBRICANT REPLACEMENT - REAR DRIVE AXLE (9.75 INCH AXLE)  .
  29. Lower the vehicle.
    Fig 10: Installing Drive Pinion Housing And/Or Seal (10 Of 10)
    G01456144Courtesy of GENERAL MOTORS CORP.
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