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Home >> Hummer >> 2008 >> H2 4D Utility Wagon >> Repair and Diagnosis >> Drivelines & Axles >> Differentials & Drive Axles >> Rear Drive Axle >> Repair Instructions >> Drive Pinion Flange/Yoke and/or Oil Seal Replacement >> Installation Procedure

Installation Procedure

    Fig 1: Installing Pinion Oil Seal
    GM651744Courtesy of GENERAL MOTORS CORP.
  1. Install a new pinion oil seal using the J 22388  or the J 44414  . See Special Tools .
  2. Apply sealant, GM P/N 12346004 (Canadian P/N 10953480) or equivalent, to the splines of the pinion yoke.
  3. Install the pinion yoke.

    Align the marks made during removal.

    4. NOTE: Do not hammer the pinion flange/yoke onto the pinion shaft. Pinion components may be damaged if the pinion flange/yoke is hammered onto the pinion shaft.
  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 Yoke With Special Tool
    GM661080Courtesy of GENERAL MOTORS CORP.
  6. Install the J 8614-01  onto the pinion yoke as shown.
    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  .

    Tighten:  Tighten the nut until the pinion end play is just taken up. Rotate the pinion while tightening the nut to seat the bearings.

    8. Fig 3: Measuring Pinion Rotating Torque
    GM661077Courtesy of GENERAL MOTORS CORP.
  8. Measure the rotating torque of the pinion. Compare this measurement with the rotating torque recorded during removal.

    Tighten:  Tighten the nut in small increments, as needed, until the rotating torque is 0.40-0.57 N.m (3- 5 lb in) greater than the rotating 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 4: Identifying Driveshaft Pinion, Yoke Retainers & Bolts
    GM361391Courtesy of GENERAL MOTORS CORP.
  10. Install the propeller shaft (3) to the pinion yoke (4).

    Align the reference marks made during removal.

  11. Install the propeller shaft yoke retaining clamps and the bolts.

    Tighten:  Tighten the propeller shaft yoke retaining clamp bolts to 25 N.m (18 lb ft).

  12. Install the brake rotors and calipers. Refer to Rear Brake Rotor Replacement .
  13. Install the tire and the wheel. Refer to Tire and Wheel Removal and Installation .
  14. Fill the drive axle. Refer to Rear Axle Lubricant Replacement .
  15. Inspect and add axle lubricant to the axle housing, if necessary. Refer to Rear Axle Lubricant Level Inspection .
  16. Lower the vehicle.
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