Torque Converter Contamination Inspection

Torque Converter Contamination Inspection

Material:

CAUTION: The continuously variable transaxle (CVT) transmission fluid used for this transaxle is unique. Do not use any type of fluid change or exchange machine on this transaxle.
This transaxle is equipped with a thermal bypass valve in the cooling system, the bypass valve will not stay open, this will prevent the use of any type of a fluid exchange machine. The preferred method is to remove the pan drain plug.

CAUTION: Do not use water-based cleaners or mineral spirits to clean or flush the torque converter or transmission damage will occur. Use only clean CVT transmission fluid.

1. NOTE: The CVT transmission fluid is bluish-green when it is new. The CVT transmission fluid will darken from bluish-green to darker green or brown as it ages. If there is an internal concern with a mechanical component, there will be metallic residue in the pan. With other transmission fluids, the odor was an indicator of heat damage or other concerns. With CVT transmission fluid, the odor will not indicate heat damage or other concerns.

If a new torque converter is not being installed, the following steps must be completed.
2. With the torque converter on a bench, pour a small amount of CVT transmission fluid from the torque converter onto an absorbent white tissue or through a paper filter and examine the CVT transmission fluid.
3. Observe the color and odor of the fluid. The CVT transmission fluid should be green or dark green, not brown or black. Odor may indicate an overheating condition such as clutch disc failure.
4. Examine the stain on the tissue for evidence of particles (spec of any kind). If particles are present in the fluid a new torque converter must be installed.
5. If there are no particles or contamination present, drain the remainder of the transmission fluid from the torque converter.