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Home >> Buick >> 2007 >> Allure CX >> Repair and Diagnosis >> External Pages >> Different car >> Section 33 (Automatic Transaxle - 4T65-E - Removal & Installation, Service, Overhaul, Troubleshooting & Diagnosis) >> Repair Instructions - Off Vehicle >> Differential Carrier Assemble (FWD Only) >> Assembly Procedure

Assembly Procedure

WARNING: This page is about a different car, the 2008 Buick LaCrosse and 2008 Buick Allure. However, it is still accessible from the selected car via links, so may be relevant.
    Fig 1: Expanded View Of Differential Carrier Assembly
    GM10599Courtesy of GENERAL MOTORS CORP.
  1. Affix the differential side gear thrust washers (706) to the side gears (705). Apply J 36850  or equivalent.
  2. Install the side gears (705) with the thrust washers into the differential carrier housing (700).
  3. Affix the differential pinion thrust washers (703) to the pinion gears (704). Apply J 36850  or equivalent.
  4. Install the pinion gears with thrust washers into the differential carrier housing (700). Rotate the pinion gears into position.
  5. Install the differential pinion shaft (701) into the differential carrier housing.
    6. Fig 2: Identifying Pinion Gear Shaft Pin
    GM10600Courtesy of GENERAL MOTORS CORP.
  6. Align the hole in the pinion gear shaft (701) to the hole in the differential carrier housing (700).
  7. Use a drift punch and a mallet in order to install the pinion gear shaft pin (702) into the differential carrier housing (700).
    8. Fig 3: Inserting Bearing Roller Spacer Onto Pin (FWD Only)
    GM10601Courtesy of GENERAL MOTORS CORP.
  8. Apply J 36850  or equivalent to the inside of a differential carrier planetary pinion gear (711).
  9. For each planetary pinion gear, insert a bearing roller spacer (710) onto the pin (712). The spacer must be inserted between the two rows of bearing rollers.
    10. Fig 4: Identifying Bearing Rollers
    GM10602Courtesy of GENERAL MOTORS CORP.
  10. For each planetary pinion gear, assemble the bearing rollers (709) into the gear (711) one at a time.
    • Use plenty of J 36850  or equivalent in order to aid assembly
    • Use a washer (708) on the bottom of the pinion gear (711) in order to help hold the bearing rollers (709) in place.
    • The number of rollers in the pinion gear is model dependent:
      • The 3.05/3.06 and 3.29/3.33 ratio differential carriers have two rows of 22 rollers (44 total)
      • The 2.86/2.84 ratio differential carriers have two rows of 18 rollers (36 total)
    • Occasionally twist the pinion gear pin (712) in order to help align the rollers
    11. Fig 5: View Of Differential Carrier Sun Gear Thrust Bearing
    GM10603Courtesy of GENERAL MOTORS CORP.
  11. Install the differential carrier sun gear thrust bearing (698) into the carrier housing.
  12. Remove each planetary pinion gear pin (712) from its pinion gear (711). Be careful not to move the rollers out of position.
  13. Affix two pinion gear thrust washers (708) on each side of the pinion gear (711). Apply J 36850  or equivalent.
    14. IMPORTANT: Make sure that the pinion is installed in the same way that it was removed. If the gear is installed upside down, noise may result, because of the change in the gear wear pattern.
  14. Install the pinion gear assemblies (711) into the carrier housing (700).
  15. Install each planetary pinion gear pin (712).
  16. Install the snap ring (699) over the planetary pinion gear pins.
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