I want to remove the wiper arms from a Renault Megane '98 hatch 1.6e engine. So far I tried opening the protection cap and unscrewing the nut from the bolt that the arm is attached to. I expected this to be enough, but the arms don't really loosened or moved after. They're either stuck to the metal or there is another trick to it. Has anyone done this, so they can confirm which one is it?
Also I'm trying to remove the wiper arms to replace the cabin ventilation fan/engine under them.