The aforementioned friction bands and clutches are managed applying automatic transmission fluid (ATF), that's pressurized by a pump after which directed to the appropriate bands/clutches to get the necessary gear ratio. Electronics began to be additional usually utilised to manage the transmission, replacing mechanical Regulate approaches for example spring-loaded valves https://dantexfghi.blogminds.com/the-greatest-guide-to-gearbox-auto-30927749