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Home >> Chevrolet >> 2020 >> Express 2500 LS, 6.0L Eng VIN G >> Repair and Diagnosis >> External Pages >> Different car >> Section 45 (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 2019 GMC Savana 3500, 2019 GMC Savana 2500, 2019 Chevrolet Express 3500, and 2019 Chevrolet Express 2500. However, it is still accessible from the selected car via links, so may be relevant.
  1. GM2150535

    Position the drive pinion pilot gear bearing (1) in the differential housing.

  2. GM2150876

    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. GM739952

    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. GM739946

    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. GM739953
    NOTE:

    Press the bearing on until the cone seats on the pinion.

    Using the J-24433  installer and a hydraulic press, install the inner pinion bearing.

  6. GM739955

    Install the new collapsible spacer.

  7. Lubricate the pinion bearings with axle lubricant. Fluid and Lubricant Recommendations
  8. Install the outer pinion bearing into the pinion bearing retainer.
  9. Using the J-44414  installer, install the new pinion oil seal.
  10. GM739961

    Install the pinion in the pinion gear bearing retainer.

  11. Install the drive pinion flange/yoke. Drive Pinion Flange/Yoke and/or Oil Seal Replacement (9.5 Inch Axle) , or Drive Pinion Flange/Yoke and/or Oil Seal Replacement (10.5 Inch Axle) 
    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. GM661077

    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. Differential Replacement (10.5 Inch Axle) , or Differential Replacement (9.5 Inch Axle) 
  19. Adjust the differential side bearing preload. Differential Carrier Bearing Preload Adjustment (9.5 Inch Axle) , or Differential Carrier Bearing Preload Adjustment (10.5 Inch Axle) 
  20. Determine the selective shim thickness for the drive pinion. Pinion Depth Adjustment (10.5 Inch Axle) , or Pinion Depth Adjustment (9.5 Inch Axle) 
  21. Adjust the backlash. Backlash Adjustment (9.5 Inch Axle) , or Backlash Adjustment (10.5 Inch Axle) 
  22. Fill the axle with lubricant. Differential Oil Replacement (10.5 Inch Axle) , or Differential Oil Replacement (9.5 Inch Axle) 
  23. Remove the support and lower the vehicle.
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