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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 >> Differential Drive Pinion Gear Bearing Replacement (10.5 Inch Axle) >> 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 Pilot Gear Bearing
    GM2150535Courtesy of GENERAL MOTORS CORP.
  1. Position the drive pinion pilot gear bearing (1) in the differential housing (2).
    2. Fig 2: View Of Differential Housing & Special Tools J 22761 & J 8092
    GM2150876Courtesy of GENERAL MOTORS CORP.
  2. Using the J 22761:  installer (1) and the J 8092:  driver (2), install the drive pinion gear pilot bearing in the differential housing (3).
    3. Fig 3: Installing Inner Pinion Bearing Cup
    GM739952Courtesy of GENERAL MOTORS CORP.
  3. Using the J 37624:  installer (2) and the J 8092:  driver (1), install the inner pinion bearing cup in the pinion gear bearing retainer.
    4. Fig 4: Installing Outer Pinion Bearing Cup
    GM739946Courtesy of GENERAL MOTORS CORP.
  4. Using the J 8608:  installer (2) and the J 8092:  driver (1), install the outer pinion bearing cup in the pinion gear bearing retainer.
    5. Fig 5: Installing Inner Pinion Bearing Using J 24433
    GM739953Courtesy of GENERAL MOTORS CORP.
    NOTE: Press the bearing on until the cone seats on the pinion.
  5. Using the J 24433:  installer and a hydraulic press, install the inner pinion bearing.
    6. Fig 6: View Of Collapsible Spacer
    GM739955Courtesy of GENERAL MOTORS CORP.
  6. Install the new collapsible spacer.
  7. Lubricate the pinion bearings with axle lubricant. Refer to Fluid and Lubricant Recommendations (USA and Canada) .
  8. Install the outer pinion bearing into the pinion bearing retainer.
  9. Using the J 44414:  installer, install the new pinion oil seal.
    10. Fig 7: View Of Pinion Retainer
    GM739961Courtesy of GENERAL MOTORS CORP.
  10. Install the pinion in the pinion gear bearing retainer.
  11. Install the drive pinion flange/yoke. Refer to Drive Pinion Flange/Yoke and/or Oil Seal Replacement .
    12. NOTE: Do not apply sealant to the pinion gear bearing retainer at this time.
  12. Install the original shim to the pinion bearing retainer. If the original shim is not available, install a 0.41 mm (0.016 in) shim to build pinion depth.
  13. Install the pinion gear bearing retainer to the axle housing.
    14. CAUTION: Refer to Fastener Caution .
  14. Install the pinion bearing retainer bolts and tighten to 88 N.m (65 lb ft).
    15. Fig 8: Measuring Pinion Rotating Torque
    GM661077Courtesy of GENERAL MOTORS CORP.
  15. Using an inch-pound torque wrench, measure the rotational torque of the pinion it should be between 1.0-2.3 N.m (10-20 lb in) for used bearings, or 1.7-3.4 N.m (15-30 lb in) for new bearings.
  16. If the rotating torque measurement is below 1.0 N.m (10 lb in) for used bearings, or 1.7 N.m (15 lb in) for new bearings, use the J 8614-01:  remover and continue to tighten the pinion nut in small increments until the rotational torque is between 1.0-2.3 N.m (10-20 lb in) for used bearings, or 1.7-3.4 N.m (15-30 lb in) for new bearings.
  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 differential assembly. Refer to Differential Replacement (8.6, 9.5/9.5 LD Inch Axles)  or Differential Replacement (10.5 Inch, 11.5 Inch Axle) .
  19. Adjust the differential side bearing preload. Refer to Differential Carrier Bearing Preload Adjustment (8.6 Inch Axle)  or Differential Carrier Bearing Preload Adjustment (10.5/11.5 Inch Axles)  or Differential Carrier Bearing Preload Adjustment (9.5LD Inch Axle) .
  20. Determine the selective shim thickness for the drive pinion. Refer to Pinion Depth Adjustment (8.6, 9.5/9.5 LD and 11.5 Inch Axles)  or Pinion Depth Adjustment (10.5 Inch Axle) .
  21. Adjust the backlash. Refer to Backlash Adjustment (8.6 Inch Axle)  or Backlash Adjustment (10.5/11.5 Inch Axle)  or Backlash Adjustment (9.5 LD Axle) .
  22. Fill the axle with lubricant. Refer to Differential Oil Replacement (10.5 Inch Axle)  or Differential Oil Replacement (11.5 Inch Axle)  or Differential Oil Replacement (8.6 Inch Axle)  or Differential Oil Replacement (9.5LD Inch Axle) .
  23. Remove the support and lower the vehicle.
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