To obtain the transmission into overdrive, a great deal of points have to be connected and disconnected by clutches and bands. The Earth provider gets connected to the torque converter housing by a clutch. The tiny Solar receives disconnected through the turbine by a clutch to ensure it could freewheel. https://juliuszltdk.ssnblog.com/32888275/the-single-best-strategy-to-use-for-gearbox-auto