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Home >> Saturn >> 2003 >> Ion 1 Automatic >> Repair and Diagnosis >> Transmission >> Automatic Trans >> Automatic Transaxle - AF23-5 >> Repair Instructions >> Rotational Torque Measurement Procedure
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Rotational Torque Measurement Procedure

Tools Required 

J 46318  Rotational Torque Adapter

  1. Rotate the transmission assembly so that the torque converter housing side is facing up.
  2. Install the front differential assembly (13) into the empty transmission case.
    Fig 1: Installing Front Differential Assembly
    G02125499Courtesy of GENERAL MOTORS CORP.
  3. Install the torque converter housing assembly (10) to the transmission case assembly.
  4. Install 10 M8 X 1.25 X 30 mm bolts (1) and hand tighten.
  5. Install 1 M8 X 1.25 X 30 mm Torx 40 bolts (2) and hand tighten.
    Fig 2: Installing Torque Converter Housing Assembly Bolts
    G02125500Courtesy of GENERAL MOTORS CORP.
    NOTE: Refer to FASTENER NOTICE in Cautions and Notices.
  6. Tighten the torque converter housing bolts in sequence.

    Tighten 

    Tighten the bolts to 23.5-35.3 N.m (17.33-26.00 lb ft).

    Fig 3: Tightening Torque Converter Housing Bolts In Sequence
    G02125501Courtesy of GENERAL MOTORS CORP.
  7. Insert J 46318  into the axle shaft opening of the differential and rotate J 46318  until it engages with the differential pinion shaft (645).
  8. Using a torque wrench, measure the rotational torque required to slowly rotate the front differential assembly and note the readings. Refer to Front Differential Gear Assembly, Unloaded Rotating Torque in Transmission Clearance Specifications .

    Rotational Torque Specification 

    Specification should be within 0.70-1.20 N.m (6-11 lb in).

    Fig 4: Measuring Rotational Torque
    G02125502Courtesy of GENERAL MOTORS CORP.
  9. Compare this measurement with the specification in Transmission Clearance Specifications . If the obtained measurement is within specifications, the differential shim replacement is not necessary.

    If obtained measurement is not within the listed specifications, the front differential bearing race shim must be replaced.

  10. Remove J 46318  from the front differential assembly.
  11. Remove the torque converter housing assembly and the front differential assembly from the transmission case.