Bearings are what enable the gears to rotate effortlessly. They are typically created away from bronze or brass, they usually suit into races (or grooves) within the gearbox housing. Contaminants can enter your gearbox oil via vents or the fill tube for the duration of checking/filling. Most of the time, https://jaidengoxjs.nizarblog.com/34257480/how-much-you-need-to-expect-you-ll-pay-for-a-good-filter-gearbox