Transmission Fluid Cooler - Backflushing and Cleaning

Transmission Fluid Cooler- Backflushing and Cleaning

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

1. The Oil-to-Air (OTA) cooler should be removed prior to flushing the lines and in-tank coolers, otherwise the OTA can collect contaminants that could be released into the fluid cooling system causing a transmission failure.
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 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 5 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.

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

Install a new OTA.