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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 1611 (Front Drive Axle) >> Repair Instructions >> Differential Drive Pinion Flange/Yoke, Seal, and Dust Deflector Replacement - Front >> Removal Procedure

Removal Procedure

WARNING: This page is about a different car, the 2003 GMC Sierra, 2003 GMC Cab & Chassis Sierra, 2003 Chevrolet Silverado, and 2003 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
  1. Raise the vehicle. Refer to JACKING AND LIFTING .
  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 pinion yoke.
  6. Remove the yoke retainer bolts (6) and the yoke retainers (7) from the front axle pinion yoke (1).
    Fig 1: Axle Pinion Yoke, Yoke Retainers & Bolts
    G01480422Courtesy of GENERAL MOTORS CORP.
    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
  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
    G01480423Courtesy of GENERAL MOTORS CORP.
  10. Scribe an alignment line between the pinion shaft and the pinion yoke.
    Fig 3: Alignment Line Between Pinion Shaft & Pinion Yoke
    G01480424Courtesy 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: Remove Pinion Nut
    G01480425Courtesy 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).
    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.
Fig 5: Remove Pinion Yoke Using J 8614-3 & J 8614-01
G01480426Courtesy of GENERAL MOTORS CORP.
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