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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 1493 (Rear Drive Axle) >> Repair Instructions >> Drive Pinion Flange/Yoke and/or Oil Seal Replacement >> Removal Procedure

Removal Procedure

WARNING: This page is about a different car, the 2003 Oldsmobile Bravada, 2003 GMC Envoy XL, 2003 GMC Envoy, and 2003 Chevrolet TrailBlazer. However, it is still accessible from the selected car via links, so may be relevant.
IMPORTANT: Observe and mark the positions of all the driveline components, relative to the propeller shaft and the axles, prior to disassembly. These components include the propeller shafts, drive axles, pinion flanges, output shafts, etc. Reassemble all the components in the exact places in which you removed the parts. Follow any specifications, torque values, and any measurements made prior to disassembly.
  1. Raise the vehicle. Refer to Lifting and Jacking the Vehicle   in General Information.
  2. Remove the tire and wheel assemblies. Refer to TIRE AND WHEEL REMOVAL AND INSTALLATION  in Tires and Wheels.
  3. Remove the rear brake calipers. Refer to Brake Caliper Replacement - Rear   in Disc Brakes.
  4. Remove the brake rotors. Refer to Brake Rotor Replacement - Rear   in Disc Brakes.
  5. Remove the propeller shaft. Refer to PROPELLER SHAFT REPLACEMENT - FRONT  in Propeller Shaft.
  6. Measure the amount of torque required to rotate the pinion. Use an inch-pound torque wrench. Record this measurement for reassembly. This will give the combined preload for the following components:
    • The pinion bearings
    • The pinion oil seal
    • The differential case bearings
    • The axle bearings
    • The axle seals
      Fig 1: Measuring Torque Using Inch - Pond Torque Wrench
      G01597873Courtesy of GENERAL MOTORS CORP.
  7. Place an alignment mark between the pinion and the pinion yoke.
    Fig 2: Placing Alignment Mark Between Pinion And Pinion Yoke
    G01597874Courtesy of GENERAL MOTORS CORP.
  8. Install the J 8614-01  as shown.
  9. Remove the pinion nut while holding the J 8614-01  .
  10. Remove the washer.
    Fig 3: Installing J 8614-01
    G01597875Courtesy of GENERAL MOTORS CORP.
  11. Install the J 8614-3 (2) and the J 8614-2 (3) into the J 8614-01  (1) as shown.
  12. Remove the pinion yoke by turning the J 8614-3 (3) clockwise while holding the J 8614-01  (1).

    Use a container in order to retrieve the lubricant.

  13. Remove the pinion oil seal. Use a suitable seal removal tool. Do not damage the housing.
    Fig 4: Installing J 8614-3 (2) And J 8614-2 (3) Into J 8614-01 (1)
    G01597876Courtesy of GENERAL MOTORS CORP.
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