An automobile gearbox is an assemblage of gears and shafts, and that is utilised to manage the output speed and torque of the machine/auto. A hydraulic automatic transmission employs planetary gearsets in place of the handbook transmission's design and style of gears lined up together input, output and intermediate shafts. https://claytonnplfa.isblog.net/top-guidelines-of-gearbox-auto-51292322