A/T - AOD Failure In Rear Of Transmission/No Lubrication

TSB 88-40 (Sept)

SUBJECT: FORD AOD

PROBLEM:
Failure in rear of transmission, due to lack of lubrication.

POSSIBLE CAUSE:
Rear of direct drive input shaft contacting the front of the output shaft.

Two holes are drilled into the front of the output shaft. One hole is sealed with a solid cup plug, the other is open to lubricate the rear components.

The direct drive input shaft is splined to the direct drum. If a step wears excessively into the direct drum spline, the direct drive input shaft will contact the output shaft. This may restrict fluid that lubes the rear components.

CORRECTION:




If a step is found in the direct drum spline, grind approximately 1/4" off the direct drive input shaft spline.

This will prevent it from contacting the output shaft.