Each change valve responds to a specific pressure selection; so if the vehicle goes quicker, the 2-to-3 shift valve will get about, because the stress in the governor is significant enough to set off that valve. As being the title signifies, there are two clutches in action with these gearboxes. https://gearbox-auto20741.answerblogs.com/34005619/gearbox-auto-no-further-a-mystery