Overdrive Clutch Mechanical Operation
WARNING: This page is about a different car, the 2018 Lincoln MKC. However, it is still accessible from the selected car via links, so may be relevant.
The overdrive clutch is a drive clutch that transfers power from the direct/overdrive clutch hub assembly to the rear planetary carrier. The overdrive clutch is applied in 4th, 5th and 6th gears.
Hydraulic pressure from the regulator valve in the valve body pushes the overdrive clutch piston against the overdrive clutch pack to apply the clutch. The input shaft and direct/overdrive clutch hub assembly transfers torque to the rear planetary carrier as a result of the clutch being applied.