Low/Reverse Mechanical Diode

WARNING: This page is about a different car, the 2004 Ford RV Cutaway, 2004 Ford Econoline, 2004 Ford E450 Super Duty, and 2004 Ford Cutaway. However, it is still accessible from the selected car via links, so may be relevant.

The low/reverse clutch mechanical diode is a one-way clutch which also functions as the low/reverse clutch pressure plate. The low/reverse mechanical diode has fewer external splines than the coast clutch mechanical diode. The low/reverse mechanical diode external splines mate with the case and the internal splines mate with the reverse ring gear/reverse planet assembly.

In first and second, the center shaft drives the forward cylinder clockwise. The forward clutch is applied and holds the forward ring gear, driving it clockwise. The forward planet provides a counterclockwise resisting torque and the forward/reverse sun gear is driven counterclockwise. The low reverse clutch is off. The low/reverse mechanical diode holds the reverse planet carrier body and allows the forward/reverse sun gear to drive the reverse planet gears which in turn drive the output shaft ring gear and hub assembly. The forward planet and output shaft hub are both splined to the output shaft.