Removal Procedure

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. Assemble all the components in the exact places in which you removed the parts. Follow any specifications, torque values, and measurements obtained prior to disassembly.

1. Raise the vehicle. Refer to JACKING AND LIFTING in General Information.
   Fig 1: Measuring Torque Of Rotate Pinion

   Courtesy of GENERAL MOTORS CORP.
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, if equipped. Refer to BRAKE CALIPER -- REAR in Disc Brakes.
4. Remove the brake rotors, if equipped. Refer to BRAKE ROTOR -- REAR in Disc Brakes.
5. Remove the brake drums, if equipped. Refer to BRAKE DRUM in Drum Brakes.
6. Disconnect the propeller shaft from the drive pinion yoke. Refer to PROPELLER SHAFT REPLACEMENT - ONE PIECE or PROPELLER SHAFT REPLACEMENT - TWO PIECE in Propeller Shaft.

   Position and secure the propeller shaft away from the rear axle.

7. Measure the amount of torque required to rotate the pinion using an inch-pound torque wrench. This will give the combined preload for the following components:
   • The pinion bearings
   • The pinion seal
   • The carrier bearings
   • The axle bearings
   • The axle seals
8. Record the measurement.
9. Draw an alignment mark between the pinion stem and the pinion flange/yoke.
   Fig 2: Marking Alignment Mark Between Pinion Stem And Pinion Flange

   Courtesy of GENERAL MOTORS CORP.
10. Install the J 8614-01  as shown.
11. Remove the pinion nut while holding the J 8614-01  .
12. Remove the washer.
    Fig 3: Removing Pinion Nut

    Courtesy of GENERAL MOTORS CORP.
13. Install the J 8614-2 (2) and the J 8614-3 (3) into the J 8614-01  (1) as shown.
14. 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.

    Important:  Do not damage the axle housing sealing surface.

15. Remove the pinion oil seal using a suitable seal removal tool.
    Fig 4: Removing Pinion Oil Seal

    Courtesy of GENERAL MOTORS CORP.