TM-9-2350-247-20-1 Unit Maintenance Manual Volume 1 M548A1 M548A3 Tracked Cargo Carrier Download
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TM 9-2350-247-20-1 200 AMP CHARGING SYSTEM OPERATIONAL CHECK (M548A3)—Continued 0024 00 2Y 1. Check voltage. 2. Is voltage 27.5 or higher? YES NO GO TO BY (PAGE 0024 00-2) 3Y C A U T I O N If voltage is 35 or more volts, shut off engine. Generator could be damaged. 1. Raise engine speed slowly. 2. Is voltage between 27.5 and 28.5 volts? YES NO GO TO CY (PAGE 0024 00-3) 4Y 1. Run engine at 900 rpm and turn on electrical equipment (lights and radio). 2. Does voltage vary less than ± 0.5 volts? YES NO 4YN 1. Go to 200 amp no charge/ regulation troubleshooting (WP 0025 00). 2. Verify no faults found. 5Y 1. Verify no faults found. BY 1. Adjust voltage regulator setting (WP 0249 00). 2. Start engine and run at fast idle (800 rpm) with no electrical equipment/load. 3. Is voltage higher than battery voltage? YES NO BYN 1. Go to 200 amp no charge/ regulation troubleshooting (WP 0025 00). 2. Verify no faults found. 2BY 1. Verify no faults found. 0024 00-2