TM-9-2320-361-24-1 Field Maintenance Manual Volume 1 for M44A2 Series Trucks
Page 178 of 1176
TM 9-2320-361-24-1 0010 00 0010 00-18 COMPRESSED AIR AND BRAKE SYSTEM TROUBLESHOOTING (Contd) Table 4. Air-Operated Troubleshooting Procedures (Contd). MALFUNCTION TEST OR INSPECTION CORRECTIVE ACTION 1. WINDSHIELD WIPERS INOPERATIVE OR OPERATE SLOWLY (GAUGE AT NORMAL OPERATING PRESSURE) NOTE If any component within the pneumatic windshield wiper assembly is found to be damaged, replace the entire pneumatic windshield wiper assembly with the electrical windshield wiper assembly (WP 0240 00). Work packages listed in this malfunction refer to the installation of the electrical windshield wiper assembly. 1. Start engine and allow air pressure to build to normal operating pressure. 2. Operate windshield wipers and inspect lines and hoses for leaks. Test 1. Check windshield wiper motor supply line (9) pressure. 1. Compress clamp (8) and disconnect windshield wiper supply line (9) from tee (7). 2. Install adapter (6) on test gauge (5). 3. Connect adapter (6) to windshield wiper supply line (9) with clamp (8). 4. Start engine (TM 9-2320-361-10) and allow air pressure to build up to normal operating pressure. 5. Operate windshield wipers to full on position (TM 9-2320-361-10). 6. Check reading on test gauge (5). 1. If air leaks are found, repair as required (TM 9-243). 2. If no air leaks are found, perform test 1. 1. If reading is lower than 55 psi (379 kPa), replace the entire pneumatic windshield wiper assembly with the electrical windshield wiper assembly (WP 0240 00). 2. If reading is 55 psi (379 kPa) or higher, perform test 2.