Puppy clutch skids on the key shaft to rotate with it. Each of the equipment within the layshaft is fixed with it.  If the left-hand Puppy clutch is introduced to skid for the remaining in the gearshift lever, it messes with the clutch gear, and the upper-velocity gear is realized. https://gearboxauto64297.tkzblog.com/33592589/rumored-buzz-on-gearbox-auto