Torque Converter Inspection

Special Tools

• J 8001:  Dial Indicator Set
• J 26900-13:  Magnetic Indicator Base
• J 35138:  Converter End Play Checker

For equivalent regional tools, refer to Special Tools .

Fig 1: View Of J 26900-13, J 8001 & J 35138 Installed On Torque Converter
Courtesy of GENERAL MOTORS CORP.
1. Position the torque converter (1) on the bench with the flywheel lugs facing down.
2. Install J 26900-13:  magnetic indicator base, J 35138:  end play checker, and J 8001:  dial indicator set onto the torque converter (1).
3. Set the dial indicator to 0.
4. Lift J 35138:  end play checker and note the dial indicator reading:
   • The torque converter end play should be 0.5 mm (0.020 in) or less
   • If the end play is too high, replace the torque converter (1)
Fig 2: Inspection Areas On Torque Converter
Courtesy of GENERAL MOTORS CORP.
5. Inspect and replace the torque converter (1) for the following conditions:
   • Overheated (torque converter will be blue in color)
   • Leaking at the weld areas
   • A damaged torque converter pilot
   • Evidence of metal particles in the converter, the oil cooler, or the cooler pipes
   • A damaged torque converter stator, a damaged pump, or a damaged turbine
   • A damaged or worn torque converter bushing (2)
   • Contaminated automatic transmission fluid due to engine coolant
6. Inspect the torque converter for stripped bolt hole threads. If found, repair the torque converter.