A/T - ATX Governor Filter
Service Information Letter # 89-9Date: March 1989
Subject: FORD ATX Governor Filter
A new design filter is used in 1988-up transmissions.
It has been relocated inside the case to reduce the chance of contamination reaching the governor.
Transmissions with the new design filter do not need the older style filter, which is located in the case under the valve body.
See Figure, for proper installation of the new design filter