The handbook valve is what the change lever hooks up to. Dependant upon which equipment is selected, the handbook valve feeds hydraulic circuits that inhibit selected gears. For example, if the change lever is in third equipment, it feeds a circuit that forestalls overdrive from engaging. Lay Shaft: Lay shafts https://johnathanzghgd.frewwebs.com/34668310/the-basic-principles-of-gearbox-auto