Procedures

Transmission Fluid Cooler Backflushing and Cleaning





1. CAUTION: Flush with clean transmission fluid only. Do not use solvents, mineral spirits or water-based cleaners.

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

Backflush any contaminates out of the oil-to-air cooler by connecting the flushing machine pressure line to number 1 and the return line to number 2.
After 5 minutes, stop the machine, reverse the hoses and repeat the flushing.
2. Backflush any contaminants out of the radiator in-tank cooler by connecting the flushing machine pressure line to number 2 and the return line to number 3.
After 5 minutes, stop the machine, reverse the hoses and repeat the flushing.





3. NOTE: Some vehicles are equipped with a cold weather bypass valve which cannot by cleaned or flushed. A new valve should be installed as part of an overhaul or prior to the installation of a remanufactured transaxle.

Using compressed air, blow through the coolers until all fluid is removed.