Torque Converter Inspection
After the engine and transmission have been separated, measure the depth of the torque converter into the transmission’s bell housing. Use this measurement to insure that the converter is aligned with the transmission oil pump correctly when reinstalling. Use a straight edge and a tape measure or ruler.
Perform a complete inspection of the torque converter when it is removed. Check the drive hub for burrs and scratches. Most of these are easily removed by polishing the hub with a piece of crocus cloth. If the hub has deep scratches or a major groove, usually where the transmission pump seal was riding, it must be replaced.
If a torque converter has a bad stator, it must be replaced. Check the studs and threaded mounts for stripping and wear. Also check the seams for any signs of leakage, and replace the converter if any leaks are evident.
Torque converters will balloon from too much pressure and must be replaced when this happens. This will result in a whining sound heard from the front of the transmission.