The friction bands are often useful for manually selected gears (for instance lower assortment or reverse) and work about the planetary drum's circumference. Bands are not used if the drive/overdrive selection is chosen, the torque currently being transmitted through the sprag clutches alternatively. The shift valve is pressurized with fluid https://zionztmeu.tkzblog.com/33592950/5-simple-techniques-for-gearbox-auto