AX4S

When the torque converter is replaced, the following procedure must be performed:
1. The cooler lines must be thoroughly cleaned by backward and forward flushing.
2. The in-tank and auxiliary coolers must be thoroughly cleaned by backward and forward flushing.
3. All transmission fluid coolers, cooler tubes, and Cooler Bypass Valves (CBV) if equipped, must be thoroughly cleaned.
4. Perform the Transmission Fluid Cooler Flow Test.
5. 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.
6. If the Coolers are to be replaced use only factory-approved service parts.

If the torque converter is not being replaced the following procedures must be performed:
7. The torque converter must be thoroughly cleaned.
a. Torque converters with drain plugs may be cleaned by using Torque Converter/Oil Cooler Cleaner.
b. 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 reinstall.
8. The in-tank and auxiliary coolers must be thoroughly cleaned by forward and backward flushing.
9. The cooler lines must be thoroughly cleaned by backward and forward flushing.
10. All transmission fluid coolers, cooler tubes, and Cooler Bypass Valves (CBV) if equipped, must be thoroughly cleaned.
11. Perform the Transmission Fluid Cooler Flow Test.
12. 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.
13. If the coolers are to be replaced, use only factory-approved service parts.