Bearings are what enable the gears to rotate effortlessly. They are typically created away from bronze or brass, and so they in shape into races (or grooves) during the gearbox housing. Most modern cars are equipped with TCM (transmission Management module) that successfully keep track of the operation of transmissions. https://filtergearbox08641.life3dblog.com/33031725/5-simple-techniques-for-filter-gearbox