Splitter gearbox vent tube

摘要

A vent tube for a splitter gearbox mounted on the rear axle assembly of a four-wheel drive tractor. The vent tube extends into the rear axle assembly, while in fluid flow communication with the lubricating oil in the splitter gearbox, and either breaks a vacuum at a balance hole or permits oil transfer from the splitter gearbox, depending upon which direction the output gears are being driven. The output gears turn at high rpm and cause churning of the oil. The vent tube assembly relieves this condition and thereby significantly reduces parasitic power losses.