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Home >> GMC >> 2006 >> Sierra 1500 HD, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 900 (Rear Drive Axle) >> Repair Instructions >> Drive Pinion Housing and/or Seal Replacement >> Installation Procedure

Installation Procedure

WARNING: This page is about a different car, the 2007 GMC Sierra and 2007 Chevrolet Silverado. However, it is still accessible from the selected car via links, so may be relevant.
    Fig 1: Installing Inner Pinion Bearing Cup
    GM739952Courtesy of GENERAL MOTORS CORP.
  1. Install the inner pinion bearing cup into the pinion gear bearing retainer using the J 37624  (2) and the J 8092  (1). See Special Tools .
    2. Fig 2: Installing Outer Pinion Bearing Cup
    GM739946Courtesy 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). See Special Tools .
    3. Fig 3: Installing The Inner Pinion Bearing Using J 24433
    GM739953Courtesy of GENERAL MOTORS CORP.
  3. Install the inner pinion bearing using the J 24433  . See Special Tools .

    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. Refer to Fluid and Lubricant Recommendations .
    6. Fig 4: View Of Pinion Into Pinion Gear Bearing Retainer
    GM739961Courtesy of GENERAL MOTORS CORP.
  6. Install the pinion into the pinion gear bearing retainer.
  7. Install the outer pinion bearing onto the pinion.
    8. Fig 5: Install A New Pinion Oil Seal Using J 44414
    GM739948Courtesy of GENERAL MOTORS CORP.
  8. Install a new pinion oil seal using the J 44414  . See Special Tools .
  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.

    11. NOTE: 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.
  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.
    13. Fig 6: Installing J 8614-01 To Pinion Yoke
    GM694814Courtesy of GENERAL MOTORS CORP.
  13. Install the J 8614-01  onto the pinion yoke as shown.
    14. NOTE: Refer to Fastener Notice .
    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.

    15. Fig 7: Measuring Pinion Rotating Torque
    GM661077Courtesy 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, 9.5/9.5LD, and 11.5 Inch Axles)  or Pinion Depth Adjustment (10.5 Inch Axle) .
    18. Fig 8: Pinion Gear Bearing Retainer
    GM739959Courtesy of GENERAL MOTORS CORP.
  18. Apply sealant, GM P/N 1052942 (Canadian P/N 10953466) or equivalent, to sealing surface of the pinion gear bearing retainer.
  19. Install the selective shim.

    Align the tab on the shim with the unmachined surface of the pinion gear bearing retainer.

  20. Apply sealant, GM P/N 1052942 (Canadian P/N 10953466) or equivalent, to 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).

    23. Fig 9: Measuring Pinion & Ring Gear Rotating Torque
    GM694807Courtesy 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.
    25. Fig 10: Identifying Driveshaft Pinion, Yoke Retainers & Bolts
    GM361391Courtesy 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 Rear Axle Lubricant Replacement (8.6 Inch Axle)  or Rear Axle Lubricant Replacement (9.5 LD Axle)  or Rear Axle Lubricant Replacement (9.5 Inch HD and 10.5 Inch Axles) .
  29. Lower the vehicle.
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