A/T - E40D Overdrive Planetary Failure
TECHNICAL BULLETIN # 184TRANSMISSION: E4OD
SUBJECT: Overdrive Planetary Failure
APPLICATION: Ford
OVERDRIVE PLANETARY FAILURE
Overdrive planetary failure may be caused by a melted drainback valve which is located under the orificed cup plug in the rear of the stator support.
If the valve is damaged, a new valve can be purchased from Ford under Part # E9TZ-7H132-A
This part number does not include a new orificed cup plug so it will be necessary to re-use the old one.
ATRA Bulletin # 080 describes the removal and replacement procedures for the valve.