Dog clutch skids on the key shaft to rotate with it. All the gear on the layshaft is fixed with it.  If the left-hand Doggy clutch is brought to skid to the left with the gearshift lever, it messes While using the clutch equipment, and the upper-velocity equipment is achieved. https://gearbox-auto54297.59bloggers.com/34231964/gearbox-auto-an-overview