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 0018 00 0018 00-17 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). CHARGING CIRCUIT TESTS (Contd) NG50 TK MODE CHECK FIELD CURRENT: • Install current probe around wire No. 1 of alternator to regulator cables. • Point arrow on current probes toward alternator. • Dial 90 into TEST SELECT switches. • Press and hold TEST until CAL message appears. • Release TEST. 9 • Start vehicle engine (TM 9-2320-361-10). • Set engine speed at a fast idle speed (1200 RPM). • Turn headlights and accessories ON. • Press TEST. • Compare number on VTM display with values given below. NO YES PROMPTING MESSAGE NOTE On systems with separate rectifiers, current probe may be placed around wire mounts on alternator to rectifier cable or rectifier cable. NOTE After completing repair, rerun GO Chain tests (WP 0017 00) to verify that problem is fixed and no other problems exist. • Refer to Electrical Troubleshooting Index (WP 0011 00) to check continuity of cables from regulator to alternator using STE/ICE-R. If cables are OK, further check charging system of STE/ICE-R. • Replace alternator (WP 0085 00). • Shut off engine. • Is current within range?