Bearings are what allow the gears to rotate efficiently. They are generally built from bronze or brass, and they fit into races (or grooves) in the gearbox housing. Contaminants can enter your gearbox oil through vents or the fill tube in the course of checking/filling. Most of the time, having https://filter-gearbox88766.blog-kids.com/34307035/the-filter-gearbox-diaries