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Home >> Hummer >> 2008 >> H2 4D Utility Wagon >> Repair and Diagnosis >> External Pages >> Different car >> Section 214 (Rear Drive Axle) >> Repair Instructions >> Drive Pinion Flange/Yoke and/or Oil Seal Replacement (8.6 Inch Axle) >> Removal Procedure

Removal Procedure

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IMPORTANT: Observe and mark the positions of all the driveline components, relative to the propeller shaft and the axles, prior to disassembly. These components include the propeller shafts, drive axles, pinion flanges, output shafts, etc. Reassemble all the components in the exact places in which you removed the parts. Follow any specifications, torque values, and any measurements made prior to disassembly.
  1. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle .
  2. Remove the rear propeller shaft. Refer to Rear Propeller Shaft Replacement .
  3. Fig 1: Measuring Pinion Rotating Torque
    GM661077Courtesy of GENERAL MOTORS CORP.
  4. Using an inch-pound torque wrench, measure the amount of torque required to rotate the pinion. Record this measurement for reassembly. This will give the combined preload for the following components:
    • Pinion bearings
    • Pinion oil seal
    • Differential case bearings
    • Axle bearings
    • Axle seals
  5. Fig 2: View Of Pinion Shaft & Pinion Yoke Alignment Marks
    GM788905Courtesy of GENERAL MOTORS CORP.
  6. Place an alignment mark between the pinion and the pinion flange/yoke.
  7. Fig 3: Holding Pinion Yoke With Special Tool
    GM661080Courtesy of GENERAL MOTORS CORP.
    IMPORTANT: DO NOT re-use the drive pinion nut. Discard and replace with NEW.
  8. Using the J 8614-01  , remove the pinion flange/yoke nut and the washer.
  9. Fig 4: Holding Pinion Yoke With Special Tool
    GM661074Courtesy of GENERAL MOTORS CORP.
    IMPORTANT: Rotate the J 8614-01  counterwise while holding the J 8614-3 to remove the drive pinion flange/yoke.
  10. Using the J 8614-01  (1), J 8614-3 (3), and the J 8614-2 (2), remove the drive pinion flange/yoke from the drive pinion.
  11. Fig 5: View Of Pinion Oil Seal
    GM1483208Courtesy of GENERAL MOTORS CORP.
  12. Using a suitable seal removal tool, remove the drive pinion oil seal from the housing.