A detachable hinge assembly configured to rotatably couple a window assembly to a vehicle body includes a support hinge member configured to couple to the vehicle body and including a hinge pin, and a window hinge member having a main body configured to couple to the window assembly, and one or more knuckles configured to removably receive the hinge pin. A cover is rotatably coupled to the window hinge member and includes a pin retaining arm. The cover is configured to move between a closed position where the pin retaining arm is positioned to retain the hinge pin within the one or more knuckles, and an open position where the pin retaining arm is positioned to allow the hinge pin to be removed from the one or more knuckles.