Transmission Fluid Cooler Backflushing and Cleaning

Transmission Fluid Cooler Backflushing and Cleaning





Material

CAUTION: Test the torque converter/fluid cooler cleaner to make sure that a vigorous fluid flow is present before proceeding. Install a new system filter if flow is weak or contaminated.

CAUTION: Prior to backflushing and cleaning the transmission fluid cooler tubes check for the components listed. If installed or equipped, they must be removed from the cooler tubes and discarded. Any components removed must be installed new.
^ Transmission fluid Oil-To-Air (OTA) cooler
^ Transmission fluid in-line filter
^ Thermal bypass valve

CAUTION: Contamination can become trapped in the coolers. Clean fluid flow after flushing does not always indicate all contamination has been removed.

1. Using a suitable torque converter/fluid cooler cleaner, flush the fluid cooler and lines.





2. If equipped, remove and discard the transmission fluid in-line filter.

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 correctly.
1 Connect the pressure line to fluid cooler inlet tube.
2 Connect the return line to fluid cooler outlet tube.
3 Place the outlet end of the return line in the solvent tank reservoir.

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

Switch the solvent pumps on. Allow the solvent to circulate a minimum of five minutes.
5. Switch the solvent 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 solvent is removed.
8. Remove the rubber hoses from fluid cooler tubes.