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Home >> Buick >> 2007 >> Lucerne CX >> Repair and Diagnosis >> External Pages >> Different car >> Section 246 (Automatic Transaxle - 4T65-E - Overhaul) >> Repair Instructions >> Differential Carrier End Play Check (FWD Only) >> Checking Procedure

Checking Procedure

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    Fig 1: View Of Case Extension Assembly & Bolts
    GM10517Courtesy of GENERAL MOTORS CORP.
  1. Make sure that the differential carrier/case thrust washer (714) and the thrust bearing (715) are still on the differential/final drive carrier assembly (700).
  2. Install the case extension seal (8) onto the case extension (6).
  3. Install the case extension assembly (6) onto the transmission (3).
  4. NOTE: Refer to FASTENER NOTICE in Cautions and Notices.
  5. Install only two of the four case extension bolts (5).

    Tighten:  Do not torque the bolts. Tighten them only until the case extension is fully seated.

  6. Fig 2: Installing J 25025-8, J 26958-10A & J 8001 To Transmission Case
    GM10520Courtesy of GENERAL MOTORS CORP.
  7. Position the transmission so that the case extension is facing upward.
  8. Install J 25025-8  , J 26958-10A  and J 8001  . See Special Tools .
  9. Set the dial indicator to zero.
  10. NOTE: Use a piece of wood or rubber while prying with J 28585 or a large screwdriver, to prevent damage to VSS bore.
  11. Use J 28585  or a large screwdriver in order to lift the differential/final drive carrier assembly. Pry up on the vehicle speed sensor reluctor wheel through the vehicle speed sensor hole in the case extension.
  12. Fig 3: Measuring Differential Carrier/Case Thrust Washer
    GM10522Courtesy of GENERAL MOTORS CORP.
  13. Note the dial indicator reading before changing the differential carrier/case thrust washer (714):
    • If the dial indicator reading is less than 0.12 mm (0.005 in), install the next smaller size thrust washer, then recheck.
    • If the dial indicator reading is greater than 0.62 mm (0.025 in), install the next larger size thrust washer, then recheck.
    • If the dial indicator reading is 0.12-0.62 mm (0.005-0.025 in), the thrust washer is correct.
  14. Remove J 8001  and J 25025-8  . See Special Tools .
  15. Install the case extension bolts (5).

    Tighten:  Tighten the case extension bolts to 36 N.m (26 lb ft).