Five Hundred AWD V6-3.0L VIN 1 (2005)
Fluid Line/Hose: Procedures
Transmission Fluid Cooler Tubes - Backflushing and Cleaning
Material
CAUTION: MERCON, MERCON V, MERCON-SP, Motorcraft Premium Automatic Transmission Fluid and Motorcraft Continuously Variable
Chain Type Transmission Fluid are not interchangeable transmission fluids. The use of any fluid other than what is recommended for this transmission
will cause transmission damage.
CAUTION: The transmission fluid used for the continuously variable transaxle (CVT) is unique. When using any type of flushing equipment to flush
the fluid cooler tubes on this transaxle, the machine must be fully cleaned of any solvent or residual transmission fluid not matching the type used on
this transaxle. The smallest amount of the wrong transmission fluid or solvents will contaminate and damage this transaxle.
CAUTION: The transmission fluid used for the CVT transaxle is unique. Do not use water-based cleaners to clean or flush the cooler tubes or
transmission damage will occur. Mineral spirits can be used to clean the cooler tubes, providing the cooler tubes are blown dry with shop air and
flushed with clean CVT automatic transmission fluid. Use only clean CVT automatic transmission fluid designated for the transmission.
CAUTION: Do not attempt to clean or flush the oil-to-air (OTA) transmission fluid cooler. Contamination may remain in the cooler and eventually
be returned to the transaxle causing internal transaxle damage. If the transaxle is to be overhauled or if installing a new transaxle, install a new OTA
transmission fluid cooler.
NOTE: This transaxle has a thermal bypass valve located in the high pressure filter case cover. The transmission fluid cooler tubes need to be
disconnected from the transmission fluid cooler and the high pressure filter case cover in order to carry out the backflushing and cleaning.
1. Disconnect the transmission fluid cooler tubes from the transmission fluid cooler.
2. Disconnect the transmission fluid cooler tubes from the high pressure filter case cover.
3. Clean and flush cooler tubes using clean CVT automatic transmission fluid. If there is a lot of dirt and contaminates, it is acceptable to use mineral
spirits to clean the fluid cooler tubes providing they are blown dry with shop air and any residue cleaned out by final flushing with clean CVT
automatic transmission fluid.
4. Once the cooler tubes have been cleaned and flushed out, install a new OTA transmission fluid cooler.
