Bearings are what enable the gears to rotate smoothly. They are typically made from bronze or brass, and so they in shape into races (or grooves) from the gearbox housing. Contaminants can enter your gearbox oil through vents or maybe the fill tube throughout checking/filling. Most of the time, nonetheless, https://cruzhlkgd.smblogsites.com/34110324/detailed-notes-on-filter-gearbox