Mustang V6-232 3.8L VIN 3 TBI (1984)
Figure 8
When overhauling a low mileage AOD transmission with evidence of overheating, inspect the converter drainback cross hole passage in the pump stator
support for contamination, or a spring compressed solid which would indicate a stuck open check ball. (See Figure 8, Hole No. 13.)
NOTE:
A low mileage vehicle is considered to have approximately 5,000 miles or less on the odometer.
The converter drainback valve in Hole No. 12 of the pump stator support consists of a spring and a ball with an aluminum ball plug pressed in the
passage. If contamination can be seen in the exposed cross hole passage area or if the spring is compressed solid which would indicate a stuck open
check ball (can be seen when the stator support is turned over-refer to Figure 8, Hole No. 13), then follow the procedure included here for removal and
cleaning of the converter drainback valve. In addition, the converter will have to be replaced.
Converter Drainback Check Valve Removal and Cleaning Procedure
1.
To remove the drainback valve (check ball and spring) in Hole No. 12, remove the aluminum ball plug. This can be done by using a suitable punch
inserted into the cross Hole No. 13. (See Figure 8.) Discard the aluminum ball plug and the spring. The check ball must be retained for
reinstallation.
