A/T - E40D Delayed Engagements

TECHNICAL BULLETIN # 245

TRANSMISSION: E40D

SUBJECT: Delayed engagements

APPLICATION: E/F 150-350 Ford Bronco

DATE: Jan 1994

E40D Delayed Engagements







An orifice is created by the use of a slot in the lower valve body gasket (figures one and two). This orifice feeds the line modulator circuit.




Some of the oil provided by this orifice (the slot in the gasket), is exhausted through a vent at the line modulator valve (figure three).

Note
The effects of a thick gasket are noticeable only when EPC is low (e.g. engine at an idle).

Using a lower valve body gasket that is thicker than original specifications will increase the volume of oil that is exhausted. A delayed engagement can result if the lower gasket is too thick. The original gasket thickness is .010".

IMPORTANT
It is perfectly acceptable (and in some cases, desirable) to use a thicker gasket between the case and main separator plate (upper valvebody gasket).