TM 9-2320-209-20-3-3 Section III. WINDSHIELD ASSEMBLY 18-6. WINDSHIELD ASSEMBLY REMOVAL AND REPLACEMENT. TOOLS: Flat-tip screwdriver, heavy duty 3/8-inch wrench SUPPLIES: None PERSONNEL: One EQUIPMENT CONDITION: Truck parked, engine off, handbrake set. a. Preliminary Procedure. Remove windshield wiper motors. Refer to Part 4, para 21-4. b. Removal. FRAME 1 1. Working in cab, lift up windshield lock handle (1). 2. Unscrew two windshield arm thumbscrews (2) partway. 3. Open windshield (3) by pushing bottom toward front of truck. 4. Tighten two windshield arm thumbscrews (2). GO TO FRAME 2 18-14