TEST CENTER WINDSHIELD ANTI-FOGGING ELEMENT (Continued)

TM 55-1520-240-23-10 12-2 TEST CENTER WINDSHIELD ANTI-FOGGING ELEMENT (Continued) 12-2 PILOT’S OR COPILOT’S WINDSHIELD HEATING ELEMENT NOTE Heating element cannot be seen. It is built into windshield. Procedure is same to test pilot’s or copilot’s windshield, pilot’s windshield is shown here. 1. Remove screw (1), lockwasher (2), and flat washer (3) from terminal (4). Disconnect wire (5). 2. Measure resistance between terminals (4 and 6). Resistance shall be as follows: Part No. Vendor Resistance (ohms) 114SS601 All 5.6 to 7.6 114SS604 PPG 9.5 to 13.5 114SS604 Sierracin 6.0 to 9.0 Vendor identification is at upper edge of windshield. 3. Connect wire (5) to terminal (4). Install flat washer (3), lockwasher (2), and screw (1). CENTER WINDSHIELD HEATING ELEMENT 4. Remove screw (1), lockwasher (2), and flat washer (3) from terminal (7). Disconnect wire (8). 5. Measure resistance between terminals (7 and 9). On windshields 114SS602 or 114SS604 series, resistance shall be 39.8 to 53.8 ohms. 6. Connect wire (8) to terminal (7). Install flat washer (3), lockwasher (2), and screw (1). 12-7