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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 901 (Rear Drive Axle) >> Repair Instructions >> Drive Pinion and Ring Gear Replacement >> Installation Procedure

Installation Procedure

WARNING: This page is about a different car, the 2003 GMC Sonoma, 2003 GMC Jimmy, 2003 Chevrolet S10 Pickup, and 2003 Chevrolet Blazer. However, it is still accessible from the selected car via links, so may be relevant.

Important:  The mating surface of the ring gear and the differential case must be clean and free of burrs before installing the ring gear.

  1. Install the ring gear onto the differential case.
    Fig 1: Installing Ring Gear Onto Differential Case
    G01468151Courtesy of GENERAL MOTORS CORP.

    Important:  The ring gear bolts have left-hand threads.

  2. Install the new ring gear bolts.

    Hand start each bolt to ensure that the ring gear is properly installed to the differential case.

    NOTE: Refer to FASTENER NOTICE in Cautions and Notices.
  3. Tighten the ring gear bolts. Tighten the ring gear bolts alternately and in stages, gradually pulling the ring gear onto the differential case.

    Tighten 

    Tighten the ring gear bolts in sequence to 120 N.m (89 lb ft).

  4. Install the pinion bearing cups. Refer to DRIVE PINION BEARINGS REPLACEMENT  .
  5. Determine the selective shim thickness for the pinion gear. Refer to PINION DEPTH ADJUSTMENT  .
  6. Install the selective shim onto the pinion.
  7. Install the inner pinion bearing to the pinion. Refer to DRIVE PINION BEARINGS REPLACEMENT  .
  8. Install a new collapsible spacer.
  9. Lubricate the pinion bearings with axle lubricant.
  10. Install the pinion to the axle housing.
  11. Install the outer pinion bearing.
  12. Install a new pinion oil seal and the pinion yoke. Refer to DRIVE PINION FLANGE/YOKE AND/OR OIL SEAL REPLACEMENT  .
  13. Install the differential assembly. Refer to DIFFERENTIAL REPLACEMENT  .
  14. Perform a gear tooth contact pattern check on the pinion and the ring gear. Refer to GEAR TOOTH CONTACT PATTERN INSPECTION  .
  15. Install the axle shafts. Refer to REAR AXLE SHAFT REPLACEMENT  .
  16. Install the brake drums, if equipped. Refer to BRAKE DRUM in Drum Brakes.
  17. Install the brake rotors, if equipped. Refer to BRAKE ROTOR -- REAR in Disc Brakes.
  18. Install the brake calipers, if equipped. Refer to BRAKE CALIPER -- REAR in Disc Brakes.
  19. Install the tire and wheel assemblies. Refer to TIRE AND WHEEL REMOVAL AND INSTALLATION in Tires and Wheels.
  20. Fill the axle with lubricant. Use the proper fluid.
  21. Lower the vehicle.
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