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Home >> GMC >> 2006 >> Sierra 1500 HD, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1153 (Front Drive Axle) >> Repair Instructions >> Output Shaft Seal Replacement - Left Side >> Installation Procedure

Installation Procedure

WARNING: This page is about a different car, the 2008 Cadillac CTS. However, it is still accessible from the selected car via links, so may be relevant.
    Fig 1: View of Shaft Seal Assembly
    GM1956028Courtesy of GENERAL MOTORS CORP.
  1. Using the J 46265  (2) and J 8092  (1), install the left output shaft seal. See Special Tools .
    2. Fig 2: View Of Pinion Housing
    GM1204945Courtesy of GENERAL MOTORS CORP.
  2. Install the selected shims and the NEW O-ring on the pinion housing.
    3. IMPORTANT: Inspect the bearing housing for nicks and burrs. Remove if necessary.
  3. Apply a light coat of gear lube to the bearing housing to ease installation.
    4. Fig 3: Heating Carrier Pinion Housing
    GM1205612Courtesy of GENERAL MOTORS CORP.
    IMPORTANT: Inspect the carrier pinion housing bore for nicks or burrs. Remove if necessary.
  4. Apply a light coat of gear lube into the pinion housing bore of the carrier.
  5. Using the J 25070  , apply heat to the differential carrier.
    6. Fig 4: View Of Pinion Housing
    GM1205613Courtesy of GENERAL MOTORS CORP.
  6. Using the two long bolts from J 45019  as guides, align the housing bolt holes to the carrier bolt holes. See Special Tools .
  7. Hand tighten the guide bolts.
  8. Applying even pressure, push the housing evenly into the differential housing.
  9. Remove the long bolts.
    10. Fig 5: View Of Pinion Housing Bolts
    GM1205616Courtesy of GENERAL MOTORS CORP.
    NOTE: Refer to Fastener Notice .
  10. Install the pinion housing bolts.

    Tighten:  Tighten the bolts to 29 N.m (21 lb ft).

    11. Fig 6: View Of Differential Assembly
    GM1204949Courtesy of GENERAL MOTORS CORP.
  11. Install the differential assembly into the differential carrier.
    12. Fig 7: Installing Right Output Shaft Oil Seal
    GM1205622Courtesy of GENERAL MOTORS CORP.
  12. Lightly lube the outside diameter of the oil seal with axle lube.
  13. Using the J 45017  , install the right output shaft oil seal (21). See Special Tools .
    14. Fig 8: View Of Carrier Cover
    GM1205624Courtesy of GENERAL MOTORS CORP.
  14. Install a NEW carrier cover O-ring into the groove.
  15. Apply a light coat of gear lube to the O-ring area.
  16. Align the bolt holes and push cover onto the differential carrier evenly.
  17. Start the cover bolts in the holes by hand.
    18. Fig 9: View of Differential Carrier Cover and Bolts
    GM1954965Courtesy of GENERAL MOTORS CORP.
  18. Install the side cover mounting bolts (1).

    Tighten:  Tighten the cover bolts to 29 N.m (21 lb ft) in a criss-cross pattern.

  19. Install the drain plug. Refer to Front Axle Lubricant Replacement 
  20. Install the carrier into the vehicle. Refer to Differential Carrier Assembly Replacement .
  21. Fill the differential with fluid. Refer to Front Axle Lubricant Replacement .
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