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TM-9-2320-361-24-1 Page 317

TM-9-2320-361-24-1 Field Maintenance Manual Volume 1 for M44A2 Series Trucks

Page 317 of 1176


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TM 9-2320-361-24-1 0018 00 0018 00-13 SIMPLIFIED TEST EQUIPMENT FOR INTERNAL COMBUSTION ENGINE— REPROGRAMMABLE STE/ICE-R NO-GO CHAIN TROUBLESHOOTING (Contd) Table 2. STE/ICE-R No-Go Chain Test (Contd). • Proceed to next page. PROMPTING MESSAGE CHARGING CIRCUIT TESTS (Contd) NG50 TK MODE CHECK CHARGING SYSTEM OUTPUT CURRENT: • Dial 03 into TEST SELECT switches and press TEST. • When PASS is displayed, dial 90 into TEST SELECT switches and press TEST. • Start vehicle engine (TM 9-2320-361-10), turn on vehicle lights and other electrical accessories. • Set engine speed to fast idle (1200 RPM). • Press TEST • Compare number on display with output current specification as listed below. 3 • Is output current low? TEST NO. ALTERNATOR OUTPUT CURRENT M44A2 ALT. MIN. OF 30 AMPS/ALT MIN. OF 15 AMPS • Shut engine and vehicle accessories off. • Does engine have alternator drive belts? NO YES NOTE After completing repair, rerun GO Chain tests (WP 0017 00) to verify that problem is fixed and no other problems exist. • Output current is greater. Use current probe to locate accessory or wire drawing excessive current. • If current is going into batteries, check electrolyte level and specific gravity. • Refer to Troubleshooting Index (WP 0011 00) to make necessary repairs.