Bearings are what enable the gears to rotate smoothly. They are typically built out of bronze or brass, they usually match into races (or grooves) within the gearbox housing. Contaminants can enter your gearbox oil through vents or maybe the fill tube for the duration of checking/filling. Usually, nonetheless, contaminants https://filter-gearbox85059.blogs100.com/34584976/a-simple-key-for-filter-gearbox-unveiled