Bearings are what enable the gears to rotate effortlessly. They are generally designed from bronze or brass, and they fit into races (or grooves) during the gearbox housing. Contaminants can enter your gearbox oil by vents or even the fill tube throughout checking/filling. Most of the time, on the other https://fernandoesnhy.pointblog.net/an-unbiased-view-of-filter-gearbox-77922623