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Home >> GMC >> 2003 >> Safari Van Cargo, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1346 (Front Drive Axle) >> Repair Instructions >> Differential Drive Pinion Flange/Yoke, Seal, and Dust Deflector Replacement - Front >> Installation Procedure

Installation 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. Install the oil seal by doing the following:
    1. 1.1. Position the oil seal over the seal bore.
    2. 1.2. Install the J 36366  over the oil seal.
    3. 1.3. Strike the J 36366  with a hammer until the seal flange seats on the axle housing surface.
  2. Apply sealant GM P/N 12346004 (Canadian P/N 10953480) or equivalent to the splines of the drive pinion yoke.
  3. Install the pinion yoke.

    Align the reference marks made during removal.

    Fig 1: Install Oil Seal Using J 36366
    G01480427Courtesy of GENERAL MOTORS CORP.
    NOTE: Refer to PINION FLANGE/YOKE INSTALLATION NOTICE .
  4. 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.
  5. Install the washer and a new pinion nut.
  6. Install the J 8614-01  onto the pinion yoke as shown.
    NOTE: Refer to FASTENER NOTICE .
    IMPORTANT: If the rotating torque is exceeded, the pinion will have to be removed and a new collapsible spacer installed.
  7. Tighten the pinion nut while holding the J 8614-01. 

    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.

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

    Compare the measurement with the rotating torque recorded earlier.

    Tighten 

    Tighten the pinion nut, in small increments, as needed, until the torque required in order to rotate the pinion is 0.40-0.57 N.m (3-5 lb in) greater than the torque recorded during removal.

  9. 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.
    10. Fig 2: Tighten Pinion Nut Using J 8614-01
    G01480428Courtesy of GENERAL MOTORS CORP.
  10. Install the propeller shaft universal joint (2) to the pinion yoke (1).

    Align the reference marks made during removal.

  11. Install the yoke retainers (7) and the yoke retainer bolts (6) to the pinion yoke (1).

    Tighten 

    Tighten the yoke retainer bolts to 25 N.m (18 lb ft).

  12. Inspect the axle lubricant level, and add, if necessary. Refer to Lubricant Level Inspection - Front Drive Axle .
  13. Install the differential carrier assembly shield, if equipped. Refer to Shield Replacement .
  14. Install the brake calipers. Refer to BRAKE CALIPER .
  15. Install the tire and wheel assemblies. Refer to TIRE AND WHEEL REMOVAL AND INSTALLATION  .
  16. Lower the vehicle.
    Fig 3: Propeller Shaft Universal Joint, Pinion Yoke, Yoke Retainers & Bolts
    G01480429Courtesy of GENERAL MOTORS CORP.
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