Torque Converter Cover: Service and Repair

6HP26 Automatic Transmission
Transmission Fluid Cooler Backflushing and Cleaning

Material:

CAUTION: When internal damage occurs in the transmission, metal particles and clutch plate material can travel into the torque converter and the transmission fluid cooler. These contaminates are a major cause of recurring transmission concerns. To prevent further concerns, remove these contaminates from the cooler lines and install a new cooler before placing the transmission in use.

1. Install a new transmission fluid cooler if any fluid leak are indicated or a major metallic failure is indicated.
2. Using a suitable torque converter/fluid cooler cleaner, flush the fluid cooler and lines.

3. NOTE: Rubber hoses must be attached to the ends of the fluid cooler tubes, to aid in connecting them to the cleaner.

Connect the cleaner pressure and return lines appropriately.
1 Connect the pressure line to the fluid cooler inlet tube.
2 Connect the return line to the fluid cooler outlet tube.
3 Place the outlet end of the return line in the fluid tank reservoir.

4. NOTE: Cycling the fluid pump on and off will help dislodge contaminants in the cooler system.

Switch the fluid pumps on. Allow the fluid to circulate a minimum of 5 minutes.
5. Switch the fluid pump off.
6. Disconnect the cleaner pressure line at the fluid cooler tube.
7. Using compressed air, blow through the fluid cooler inlet tube until all fluid is removed.
8. Remove the rubber hoses from the fluid cooler tubes.