Cutaway view of the ZF 8HP transmission: torque converter on the left, planetary gearsets in the centre, Regulate mechanisms at the bottom The most common design of automatic transmissions would be the hydraulic automatic, which typically employs planetary gearsets that are operated making use of hydraulics. To accomplish this, https://gearboxauto33221.blogzet.com/little-known-facts-about-gearbox-auto-47234237