Torque Converter Cleaning and Inspection

Torque Converter Cleaning And Inspection
1. If the torque converter is being replaced, continue with Sub step 2 of Step 2.
2. If the torque converter is not being replaced the following procedures must be carried out:
1 The torque converter must be thoroughly cleaned.
- Torque converter with drain plugs may be cleaned by using a suitable torque converter/fluid cooler cleaner.
- Torque converter without drain plugs may be cleaned by hand. Partially fill the torque converter using only the 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 the transmission, and reinstall.

2 NOTE: 5.4L applications still use the in-tank coolers. The Oil-To-Air (OTA) cooler will be used as an auxiliary cooler for this application only. Vehicles equipped with 5.4L only.

The OTA cooler must be replaced when contamination is present in the transmission. Do not try to clean or backflush the OTA cooler or the contamination may be reintroduced into the transmission, causing transmission assembly damage.
The in-tank and auxiliary coolers must be thoroughly cleaned by forward and backward flushing.
3 The cooler lines must be thoroughly cleaned by backward and forward flushing.
4 All Cooler Bypass Valves (CBV), if equipped, must be thoroughly cleaned.
5 Carry out the Transmission Fluid Cooler Flow Test.
6 If the transmission cooling system fails the Transmission Fluid Cooler Flow Test, the fluid cooler (OTA), cooler bypass valve, and/or cooler lines must be replaced.
7 If the coolers or cooler bypass valve are to be replaced use only factory-approved service parts.