Once you have everything loose on the other side (hose, suspension, direction, etc ...) the stick is involved in the differential of the gearbox by pressure.
The Palier, on the tip has a striatum and that striatum has an elastic ring that retains it, what you have to do is make lever with care to separate the transmission out. Either with a detachable or large flat or heavy screwdriver. You have to empty the valvulina of the gearbox first because you run the risk of being poured on top when you take out the transmission of the box.
All the best.