Torque Converter Turbine To Pump Stator Interference Check: Procedure

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

Position the torque converter with the pump drive up.
Install the front pump support to engage the mating splines of the front pump support shaft on the torque converter.

Fig 1: Identifying Front Pump Support
Courtesy of FORD MOTOR CO.
Install the forward clutch cylinder and shaft, engaging the splines with the rear clutch hub.
Check for stator to turbine interference.
1. Hold the front pump support stationary.
2. Attempt to rotate the forward clutch cylinder and shaft.
  - The turbine and torque converter clutch assemblies should rotate in both directions, not exceeding maximum torque of 9.5 N.m (7 Ib-ft), without any signs of metallic interference or scraping noise.
Fig 2: Identifying Front Pump Support & Forward Clutch Cylinder & Shaft
Courtesy of FORD MOTOR CO.
If interference exists, the stator front thrust washer may be worn, allowing the stator to hit the turbine. In such cases, a new or remanufactured torque converter must be installed.
- The converter crankshaft pilot should be checked for nicks or damaged surfaces that could cause interference when installing the torque converter into the crankshaft. Check the converter front impeller hub for nicks or sharp edges that would damage the pump seal.