TM-9-2320-361-24-1 Field Maintenance Manual Volume 1 for M44A2 Series Trucks
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TM 9-2320-361-24-1 0014 00 0014 00-10 INDICATORS, GAUGES, AND WARNING SYSTEM TROUBLESHOOTING (Contd) Table 1. Indicator, Gauges, and Warning System Troubleshooting (Contd). MALFUNCTION TEST OR INSPECTION CORRECTIVE ACTION 5. VOLTMETER INOPERATIVE NOTE If STE/ICE-R is available, perform NG 31 gauge test (WP 0018 00). Test 1. Test voltmeter. 1. Turn power accessory switch to ON position. Do not start engine. 2. Voltmeter should rest between lower edge of green area and upper edge of yellow area on gauge (24 volts). 3. Start engine (TM 9-2320-361-10) and observe voltmeter on instrument cluster. 4. Voltmeter should rise as engine speeds up and stop over white dot in green area (approximately 28 VDC). Test 2. Test battery voltage to alternator. Go to WP 0012 00, table 3, malfunction 1, test 3. Check frame ground to multimeter. 1. Set multimeter to RX 1 scale. 2. Connect negative lead to panel ground on instrument panel. 3. Touch positive lead to voltmeter bracket. Continuity should be present. Ensure instrument panel is grounded. If voltmeter does not perform as specified in steps 2 and 4, stop engine and go to test 2. 1. If continuity is present, reinstall instrument panel cluster (WP 0093 00) and recheck instrument panel cluster. 2. If continuity is not present, remove alternator (WP 0085 00) and check for corrosion around alternator body. TEST 2 INSTRUMENT PANEL VOLTMETER VOLTMETER BRACKET