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Indexing Torque Converter

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To determine and correct a torque converter vibration, the following procedure may have to be performed several times to achieve the best possible torque converter to flywheel balance.

  1. Raise and suitably support the vehicle. Refer to Lifting and Jacking the Vehicle .
  2. Rotate the torque converter one bolt position.
    3. Fig 1: View Of Torque Converter Hub In Engine Crankshaft
    GM572368Courtesy of GENERAL MOTORS COMPANY
  3. Align the torque converter hub (2) in the engine crankshaft (3) and install the torque converter to flywheel bolts.
  4. Lower the vehicle.
  5. With the engine at idle speed and the transmission in PARK or NEUTRAL, observe the vibration. Refer to Noise and Vibration Analysis .

    Repeat this procedure until you obtain the best possible balance.

  6. Install the transmission converter cover bolts and the cover.
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