Torque Converter Cleaning and Inspection

1. If the torque converter is being replaced, continue with Substep 2 of Step 2.
2. If the torque converter is not being replaced, the following procedures must be performed:
- The torque converter must be thoroughly cleaned.
- Torque converters with drain plugs can be cleaned by using a suitable torque converter/fluid cooler cleaner.
- Torque converters without drain plugs can be cleaned by hand. Partially fill the torque converter using only recommended transmission fluid for the applicable transmission. Hand-agitate the torque converter and then thoroughly drain the fluid. Refill the torque converter with new fluid specified for transmission, and install.
- All in-tank and auxiliary coolers must be thoroughly cleaned by forward and backward flushing.
- All cooler lines must be thoroughly cleaned by backward and forward flushing.
- All Cooler Bypass Valves (CBV), if equipped, must be thoroughly cleaned.
- Carry out Transmission Fluid Cooler Flow Test.
- If the transmission cooling system fails the Transmission Fluid Cooler Flow Test, the fluid cooler, cooler bypass valve, and or cooler lines must be replaced.
- If the coolers are to be replaced, use only factory-approved service parts.