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Home >> GMC >> 2003 >> Safari Van Cargo, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1600 (Drive Axles - Front) >> Repair Instructions >> Differential Drive Pinion Flange/Yoke, Seal, And Dust Deflector Replacement - Front >> Removal Procedure

Removal Procedure

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  1. Raise the vehicle. Refer to LIFTING & JACKING THE VEHICLE .
  2. Remove the tire and wheel assemblies. Refer to TIRE AND WHEEL REMOVAL AND INSTALLATION .
  3. Remove the brake calipers. Refer to BRAKE CALIPER .
  4. Remove the differential carrier assembly shield, if equipped. Refer to SHIELD REPLACEMENT .
  5. Reference mark the relationship of the propeller shaft to the front axle pinon yoke.
  6. Remove the yoke retainer bolts (6) and the yoke retainers (7) from the front axle pinion yoke (1).
    NOTE: When removing the propeller shaft, do not attempt to remove the shaft by pounding on the yoke ears or using a tool between the yoke and the universal joint. If the propeller shaft is removed by using such means, the injection joints may fracture and lead to premature failure of the joint.
    Fig 1: Removing Yoke Retainer Bolts And Yoke Retainers From Front Axle Pinion Yoke
    G01455861Courtesy of GENERAL MOTORS CORP.
  7. Disconnect the propeller shaft universal joint (2) from the front axle pinion yoke (1).

    Wrap the bearing caps with tape in order to prevent the loss of bearing rollers.

  8. Support the propeller shaft and move out of the way as necessary.
  9. Measure the torque required in order to rotate the pinion. Use an inch-pound torque wrench. Record the torque value for reassembly. 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
    Fig 2: Measuring Torque Required In Order To Rotate Pinion
    G01455862Courtesy of GENERAL MOTORS CORP.
  10. Scribe an alignment line between the pinion shaft and the pinion yoke.
    Fig 3: Scribing Alignment Line Between Pinion Shaft And Pinion Yoke
    G01455863Courtesy of GENERAL MOTORS CORP.
  11. Install the J 8614-01  onto the pinion as shown.
  12. Remove the pinion nut while holding the J 8614-01  .
    Fig 4: Removing Pinion Nut
    G01455864Courtesy 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.
    Fig 5: Installing Flange And Pulley Holding Tool
    G01455865Courtesy of GENERAL MOTORS CORP.
  14. Remove the pinon yoke by turning the J 8614-3  (3) clockwise while holding the J 8614-01  (1).

    Important:  Carefully remove the oil seal from the bore. Do not distort or scratch the aluminum case.

  15. Remove the oil seal using a suitable seal removal tool.
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