TM-9-2320-361-24-1 Field Maintenance Manual Volume 1 for M44A2 Series Trucks
Page 208 of 1176
MALFUNCTION TEST OR INSPECTION CORRECTIVE ACTION 2. BATTERIES NOT CHARGING PROPERLY NOTE If STE/ICE-R is available, perform NG 50 Charging Circuit Tests (WP 0018 00). Test 1. Check for loose or missing alternator belts (WP 0084 00). NOTE Battery voltmeter located on instrument panel is not always accurate and should not be used to adjust voltage. Indicator needle in voltmeter located on instrument panel should cover the white dot at edge of green area when battery voltage is 28.0. Test 2. Test battery voltage. 1. Adjust loose belts (WP 0084 00). 2. Replace broken or missing belts (WP 0084 00). If voltage across batteries cannot be adjusted to 28.0 ± 0.2 VDC, go to WP 0012 00, table 3, malfunction 1, test 2. 3. BATTERIES HOT OR BOILING, CORRECTED SPECIFIC GRAVITY OF ALL CELLS IS 1.280 NOTE If STE/ICE-R is available, perform NG 50 Charging Circuit Tests (WP 0018 00). Test charging voltage of batteries (WP 0012 00, table 2, malfunction 2, test 2). Replace defective batteries as necessary (WP 0127 00). 4. BATTERIES USE EXCESSIVE WATER NOTE If STE/ICE-R is available, perform NG 50 Charging Circuit Tests (WP 0018 00). Test charging voltage of batteries (WP 0012 00, table 2, malfunction 2, test 2). Replace defective batteries as necessary (WP 0127 00). 5. BATTERIES RUN DOWN IN OPERATION NOTE If STE/ICE-R is available, perform NG 50 Charging Circuit Tests (WP 0018 00). Test 1. Check for loose or missing alternator belts. Test 2. Test charging voltage (WP 0012 00, table 2, malfunction 2, test 2). 1. Adjust loose belts (WP 0084 00). 2. Replace missing belts (WP 0084 00). If proper voltage is indicated, problem is not in charging system. Refer to WP 0012 00, table 1, malfunction 1, step 1. TM 9-2320-361-24-1 0012 00 0012 00-24 BATTERY AND CHARGING SYSTEM TROUBLESHOOTING (Contd) Table 3. Charging System (60 Amp) Troubleshooting Procedure (Contd).