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Differential Carrier Assembly - Assemble

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Tools Required 

  1. Install the selective shim between the inner pinion bearing and the shoulder of the pinion gear.
  2. Install the inner pinion bearing onto the pinion gear using the J-33785  .
    Fig 1: Installing Inner Pinion Bearing Onto Pinion Gear Using J-33785
    G01216466Courtesy of GENERAL MOTORS CORP.
  3. Install the new collapsible spacer onto the pinion gear.
  4. Lubricate the inner and the outer pinion bearings with the proper axle lubricant.
    Fig 2: Installing Collapsible Spacer Onto Pinion Gear
    G01216467Courtesy of GENERAL MOTORS CORP.
  5. Install the outer pinion bearing.
    Fig 3: Installing Outer Pinion Bearing
    G01216468Courtesy of GENERAL MOTORS CORP.
  6. Install the oil seal by doing the following:
    1. Position the oil seal in the bore.
    2. Install the J-33782  over the oil seal.
    3. Strike the J-33782  with a hammer until the seal flange seats on the axle housing surface.
  7. Install the pinion gear, the selectable shim with inner pinion bearing and the new collapsible spacer, into the left differential carrier case.
  8. Apply sealant GM P/N 12346004 (Canadian P/N 10953480) or equivalent to the splines of the pinion yoke.
  9. Install the pinion yoke.
    CAUTION: Do not hammer the pinion flange/yoke onto the pinion shaft. Pinion components may be damaged if the pinion flange/yoke is hammered onto the pinion shaft.
  10. 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.
    Fig 4: Installing J-33782 Over Oil Seal
    G01216469Courtesy of GENERAL MOTORS CORP.
  11. Install the washer.
  12. Install a new pinion nut.
  13. Install the J-8614-01  onto the pinion yoke as shown.
    CAUTION: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.

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

  15. Measure the rotating torque of the pinion using an inch-pound torque wrench.

    Specification 

    The rotating torque of the pinion should be 1.7-3.4 N.m (15-30 lb in) for new bearings or 1.0-2.3 N.m (10-20 lb in) for used bearings.

  16. If the rotating torque measurement is below 1.7 N.m (15 lb in) for new bearings or 1.0 N.m (10 lb in) for used bearings, continue to tighten the pinion nut.

    Tighten 

    Tighten the pinion nut, in small increments, as needed, until the torque required in order to rotate the pinion is 1.7-3.4 N.m (15-30 lb in) for new bearings or 1.0-2.3 N.m (10-20 lb in) for used bearings.

    Fig 5: Installing J-8614-01 Onto Pinion Yoke
    G01216470Courtesy of GENERAL MOTORS CORP.
  17. 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.

  18. Install the left side differential carrier bearing, print side out, to the left side differential adjuster using the J-45232  (2) and the J-8092  (1).
    Fig 6: Installing Left Side Differential Carrier Bearing To Left Side Differential Adjuster Using J-45232 & J-8092
    G01216471Courtesy of GENERAL MOTORS CORP.
  19. Install the left inner shaft bearing and the differential bearing adjuster into the left differential carrier case using the J-45224  .
  20. Install the left differential case bearing cup into the left differential carrier assembly case half using the J-23423-A  and the J-8092  .
    Fig 7: Installing Left Inner Shaft Bearing & Differential Bearing Adjuster Using J-45224
    G01216472Courtesy of GENERAL MOTORS CORP.
  21. Install the right differential bearing adjuster into the differential case half using the J-45224  .
    Fig 8: Installing Right Differential Bearing Adjuster Using J-45224
    G01216473Courtesy of GENERAL MOTORS CORP.
  22. Install the right differential case side bearing cup into the right differential carrier case half using the J-23423-A  (2) and the J-8092  (1).
  23. Install the differential case assembly into the left differential carrier case half.
  24. Install the right differential carrier case half to the left differential carrier case half.

    Do not use sealer at this time.

    If the carrier case halves do not make complete contact, back out the right differential adjuster nut using the J-45224  .

  25. Install the differential carrier case bolts.

    Tighten 

    Tighten the differential carrier case bolts to 48 N.m (35 lb ft).

    Fig 9: Installing Right Differential Case Side Bearing Cup Using J-23423-A & J-8092
    G01216474Courtesy of GENERAL MOTORS CORP.
  26. Using the J-45224  , turn the left differential adjuster nut sleeve clockwise until the differential adjuster nut contacts the differential side bearing and can no longer be turned.
    Fig 10: Turning Left Differential Adjuster Nut Sleeve Clockwise Using J-45224
    G01216475Courtesy of GENERAL MOTORS CORP.
  27. Using the J-45224  , turn the right differential adjuster nut sleeve clockwise until the differential adjuster nut contacts the differential side bearing and can no longer be turned.
  28. Rotate the pinion several times in order to seat bearings.
  29. Measure the rotating torque of the pinion and differential assembly using an inch-pound torque wrench.

    Specification 

    The rotating torque of the pinion and differential assembly should be 3.4-6.2 N.m (30-55 lb in) for new bearings or 2.8-5.1 N.m (25-45 lb in) for used bearings.

  30. If the rotating torque measurement is below 3.4 N.m (30 lb in) for new bearings or 2.8 N.m (25 lb in) for used bearings tighten the differential adjuster nut sleeves one notch at a time on each side until the rotating torque of the pinion and differential assembly is within specifications.
  31. If the rotating torque measurement is above 6.2 N.m (55 lb in) for new bearings or 5.1 N.m (45 lb in) for used bearings, loosen the differential adjuster nut sleeves one notch at a time on each side until the rotating torque of the pinion and differential assembly is within specifications.
  32. 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.

  33. Measure the drive pinion to ring gear backlash. Refer to Backlash Inspection and Adjustment .
    Fig 11: Turning Right Differential Adjuster Nut Sleeve Clockwise Using J-45224
    G01216476Courtesy of GENERAL MOTORS CORP.
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