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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 Housing and/or Seal Replacement >> 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. Drain the axle lubricant. Refer to Rear Axle Lubricant Replacement (8.6 Inch Axle)  or Rear Axle Lubricant Replacement (10.5 Inch Axle) .
  3. Remove the rear axle shafts. Refer to Rear Axle Shaft and/or Gasket Replacement .
  4. Remove the rear propeller shaft from the vehicle. Refer to Rear Propeller Shaft Replacement .
    5. Fig 1: Measuring Pinion Rotating Torque
    GM661077Courtesy of GENERAL MOTORS CORP.
  5. Using an inch-pound torque wrench, measure the amount of torque required to rotate the pinion and the ring gear. Record this measurement for reassembly. This will give the combined preload for the following components:
    • The pinion bearings
    • The pinion pilot bearing
    • The pinion oil seal
    • The differential case bearings
  6. Remove the drive pinion flange/yoke and/or oil seal. Refer to Drive Pinion Flange/Yoke and/or Oil Seal Replacement (10.5 Inch Axle)  or Drive Pinion Flange/Yoke and/or Oil Seal Replacement (8.6 Inch Axle) .
  7. Remove the pinion gear bearing retainer and the pinion.
  8. Remove the selective shim.
  9. Measure the amount of torque required to rotate the pinion. Use an inch-pound torque wrench. Record this measurement for reassembly.
    10. Fig 2: Using J 8614-01 To Tighten Pinion Nut
    GM694814Courtesy of GENERAL MOTORS CORP.
  10. Using the J 8614-01  , remove the pinion nut.
  11. Remove the washer.
    12. Fig 3: View Of J 8614-2, J 8614-3 & J 8614-01
    GM694825Courtesy of GENERAL MOTORS CORP.
  12. Using the J 8614-2 (2) and the J 8614-3 (1) into the J 8614-01  (3), remove the pinion yoke by turning the J 8614-3 (1) clockwise.
  13. Using a suitable seal remover, remove the pinion oil seal. Do not damage the housing.
  14. Remove the outer pinion bearing.
    15. Fig 4: View Of Pinion
    GM694822Courtesy of GENERAL MOTORS CORP.
  15. Remove the pinion.
    16. Fig 5: View Of Collapsible Spacer
    GM739955Courtesy of GENERAL MOTORS CORP.
  16. Remove the collapsible spacer.
    17. Fig 6: View Of Inner Pinion Bearing & Hydraulic Press
    GM680110Courtesy of GENERAL MOTORS CORP.
  17. Using the J 22912-B  and a hydraulic press, remove the inner pinion bearing from the pinion.
    18. Fig 7: View of Outer Pinion Bearing Cup
    GM739944Courtesy of GENERAL MOTORS CORP.
    IMPORTANT: When performing the following service procedure, move the drift back and forth between one side of the cup and the other in order to work the cups out of the retainer evenly.
  18. Using a hammer and a brass drift in the slots provided, remove the outer pinion bearing cup.
    19. Fig 8: View of Inner Pinion Bearing Cup
    GM739945Courtesy of GENERAL MOTORS CORP.
    IMPORTANT: When performing the following service procedure, move the drift back and forth between one side of the cup and the other in order to work the cups out of the retainer evenly.
  19. Using a hammer and a brass drift in the slots provided, remove the inner pinion bearing cup.
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