TM 9-2320-209-10-1 b . Windshield Controls and Indicators. 1. Windshield locking handle. Locks 4. Windshield wiper motor reset windshield in closed position. button. When in the out position, 2. Windshield wiper lever. Gives a wiper motor will not operate. Press in before turning windshield way to move the windshield wiper manually. wiper control knob to on position. 3. Windshield clamping screws. Locks wind shield in any open position. . 4-4