Procedures

TRANSAXLE FLUID COOLER - BACKFLUSHING AND CLEANING

Transaxle Fluid Combo Cooler Without Cooler Bypass Valve

Transaxle Fluid Combo Without Cooler Bypass Valve (Part 1):

Transaxle Fluid Combo Cooler With Cooler Bypass Valve

Transaxle Fluid Combo Without Cooler Bypass Valve (Part 2):

1. Remove the radiator grille.
2. Backflush any contaminants from the oil-to-air cooler by connecting the flushing machine pressure line to the transaxle fluid cooler outlet tube and the return line to the transaxle fluid cooler inlet tube. After 5 minutes, stop the machine, reverse the hoses and repeat the flushing.

Caution
^ Do not exceed 276 kPa (40 psi) of air pressure when flushing the cooler or damage to the internal cooler fins will occur.

Caution
^ Flush with clean transaxle 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.

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

Caution
^ Do not exceed 276 kPa (40 psi) of air pressure when flushing the cooler. Damage to the cooler will occur.

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