The correct sequence of tension Establish-up and launch is managed by a fancy arrangement of hydraulic valves at the side of sensors that reply to motor load, highway velocity and throttle opening. Primarily, the automatic gearbox employs a roller clutch for routine upshifts/downshifts. It operates the same as a ratchet. https://gearbox-auto63950.blogpostie.com/55251306/gearbox-auto-for-dummies