Torque Converter Cleaning and Inspection

See TSB 06-14-4

Torque Converter Cleaning and Inspection
1. If the torque converter is not going to be replaced, flush the torque converter. Refer to Torque Converter Flushing.
2. If the torque converter is being replaced, partially fill the converter with Motorcraft MERCON Multipurpose (ATF) Transmission Fluid XT-2-QDX or equivalent meeting Ford specification MERCON and hand agitate. Drain the converter and then refill for installation. MERCON(R) Automatic Trqansmission Fluid is being replaced by MERCON(R) V as a service fluid, as per TSB 06-14-4.
3. Flush all transaxle fluid coolers and tubes.
4. All Cooler Bypass Valves (CBV), if equipped, must be cleaned.
5. Check the fluid cooler flow. Refer to Preliminary Inspection. If the transaxle cooling system fails the test, install a new fluid cooler, cooler bypass valve, and/or the cooler lines.