The intention is not that when the vent window is open, it is set in motion by the wind, it must remain in the position you want it to be. To do this, Volkswagen has mounted a brake on the lower axle of the window, by applying the brake more firmly, the vent window will move more firmly.
Adjust the vent window so that it opens and closes smoothly while remaining in any position, you can adjust it after installing the window, the brake remains accessible. If this part is damaged or has been lost during restoration, don't worry, it is available again.
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