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Home >> GMC >> 2006 >> Sierra 1500 HD, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 946 (Front Drive Axle) >> Repair Instructions >> Front Differential Drive Pinion Flange/Yoke, Seal, and Dust Deflector Replacement >> Installation Procedure

Installation Procedure

WARNING: This page is about a different car, the 2007 GMC Sierra and 2007 Chevrolet Silverado. However, it is still accessible from the selected car via links, so may be relevant.
    Fig 1: Installing Oil Seal Using J 36366 - Front Axle
    GM664080Courtesy of GENERAL MOTORS CORP.
  1. Install the oil seal by doing the following:
    1. Position the oil seal over the seal bore.
    2. Install the J 36366  over the oil seal.
    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.

    4. 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. Fig 2: Holding Pinion Flange Using Special Tool
    GM664065Courtesy of GENERAL MOTORS CORP.
  6. Install the J 8614-01  onto the pinion yoke as shown. See Special Tools .
    7. 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  . See Special Tools .

    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 3: Front Axle Pinion Yoke, Propeller Shaft Universal Joint, Yoke Retainer & Bolts
    GM363785Courtesy 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 Front Axle Lubricant Level Inspection (8.25 Inch Axle)  or Front Axle Lubricant Level Inspection (9.25 Inch Axle) .
  13. Install the engine shield, if equipped. Refer to Engine Shield Replacement .
  14. Install the brake calipers. Refer to Front Brake Caliper Replacement (JD9, JF3, JF7) or Front Brake Caliper Replacement (JH6, JH7) .
  15. Fill the drive axle. Refer to Front Axle Lubricant Replacement .
  16. Install the tire and wheel assemblies. Refer to Tire and Wheel Removal and Installation .
  17. Lower the vehicle.
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