Stator to Impeller Interference Check

1. Position the front pump support on a bench with the spline end of the shaft pointing up.

NOTE: Front pump support may remain in front pump support and gear during this test.

2. Mount torque converter on the front pump support with the splines on the one-way clutch inner race, engaging the mating splines of the front pump support.
3. Hold the front pump support stationary, and try to rotate the torque converter counterclockwise. The torque converter should rotate freely without any signs of interference or scraping within the torque converter.
4. If there is an indication of scraping, the trailing edges of the stator blades may be interfering with the leading edges of the impeller blades. In such cases, replace the torque converter.