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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 944 (Rear Drive Axle) >> Repair Instructions >> Drive Pinion Bearings Replacement >> Installation Procedure

Installation Procedure

WARNING: This page is about a different car, the 2002 Oldsmobile Bravada, 2002 GMC Envoy XL, 2002 GMC Envoy, and 2002 Chevrolet TrailBlazer. However, it is still accessible from the selected car via links, so may be relevant.
  1. Install the outer pinion bearing cup using the J 7817 (2) and the J 8092 (1).
    2. Fig 1: Installing Outer Pinion Bearing Cup
    G01705408Courtesy of GENERAL MOTORS CORP.
  2. Install the inner pinion bearing cup using the J 8608 (2) and the J 8092 (1).
    3. Fig 2: Installing Inner Pinion Bearing Cup
    G01705409Courtesy of GENERAL MOTORS CORP.
  3. Determine the selective shim thickness for the pinion. Refer to Pinion Depth Adjustment .
  4. Install the selective shim between the inner pinion bearing and the shoulder on the gear.
  5. Install the inner pinion bearing using the J 24433.

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

    6. Fig 3: Installing Inner Pinion Bearing
    G01705410Courtesy of GENERAL MOTORS CORP.
  6. Install a new collapsible spacer.
  7. Lubricate the pinion bearings with axle lubricant. Use the proper fluid. Refer to Fluid and Lubricant Recommendations in Maintenance and Lubrication.
  8. Install the pinion into the axle housing.
  9. Install the outer pinion bearing onto the pinion.
  10. Install a new pinion oil seal using the J 33782.
  11. Apply sealant (GM P/N 12346004 or equivalent) to the splines of the pinion yoke.
    12. Fig 4: Installing A New Pinion Oil Seal
    G01705411Courtesy of GENERAL MOTORS CORP.
  12. Install the pinion yoke.

    Align the marks made during removal.

    13. Fig 5: Installing Pinion Yoke And Aligning Removal Marks
    G01705412Courtesy of GENERAL MOTORS CORP.
  13. 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.
  14. Install the washer and a new pinion nut.
  15. Install the J 8614-O1 onto the pinion yoke as shown.
    IMPORTANT: If the rotating torque is exceeded, the pinion will have to be removed and a new collapsible spacer installed.
    16. Fig 6: Installing J 8614-O1 Onto Pinion Yoke
    G01705413Courtesy of GENERAL MOTORS CORP.
  16. Tighten the pinion nut while holding the J 8614-O1.
    NOTE: 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.

    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.

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

    Specification 

    The rotating torque of the pinion should be 1.0-2.8 N.m (10-25 lb in) (used bearings) or 1.7-3.4 N.m (15-30 lb in) (new bearings).

    18. Fig 7: Measuring Rotating Torque Of Pinion
    G01705414Courtesy of GENERAL MOTORS CORP.
  18. If the rotating torque measurement is below 1.0 N.m (10 lb in) (used bearings) or 1.7 N.m (15 lb in) (new 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 1.0-2.8 N.m (10-25 lb in) (used bearings) or 1.7-3.4 N.m (15-30 lb in) (new bearings).

  19. 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.

  20. Install the differential. Refer to Differential Replacement .
  21. Install the brake rotors. Refer to REAR BRAKE ROTOR in Disc Brakes.
  22. Install the brake calipers. Refer to REAR BRAKE CALIPER in Disc Brakes.
  23. Install the tire and wheel assemblies. Refer to Tire and Wheel Removal and Installation in Tires and Wheels.
  24. Fill the axle with axle lubricant lubricant. Use the proper fluid. Refer to Lubricant Change .
  25. Lower the vehicle.
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