Bearings are what allow the gears to rotate efficiently. They are usually made from bronze or brass, and so they suit into races (or grooves) in the gearbox housing. Contaminants can enter your gearbox oil through vents or perhaps the fill tube for the duration of checking/filling. Usually, nonetheless, contaminants https://filter-gearbox46676.vblogetin.com/39816957/filter-gearbox-an-overview