6. Torque Converter Leak Test

Torque Converter Leak Test

Special Tools
* J 43763 - Torque Converter Leak Test Plug
* J 21369-F - Torque Converter Leak Test Fixture

For equivalent regional tools, refer to Special Tools (Allison - Automatic Transmission).





Note: The torque converter leak test requires a large container of water in order to submerge the torque converter.

1. Position the torque converter (6) on the work table so that the pump hub is facing up.
2. Move the nut (3) to the middle of the center body (1) of J 43763 - plug.
3. Install J 43763 - plug into the torque converter hub.




4. Install J 21369-F - fixture (3) onto the torque converter (8) and onto J 43763 - plug (4).
5. Firmly tighten the nut (6) in order to seal J 43763 into the torque converter.
6. Firmly tighten the nut (5) in order to securely attach the torque converter to J 21369-F - fixture (3). Connect an air hose to the air fitting (1) of J 43763 - plug.
7. Pressurize the converter to 517 kPa (75 psi) maximum.
8. Disconnect the air hose. Submerge the torque converter in water.
9. Closely observe the torque converter for bubbles that indicate leakage. If the torque converter leaks, replace the torque converter.

Warning

All pressure from the torque converter must be exhausted before loosening the test fixture nut. Failure to relieve the pressure could cause personal injury and/or property damage.

10. Push on the pressure relief valve (2) of J 43763 - plug and release the air from the torque converter.
11. Remove the J tools from the torque converter.