TM-9-2320-280-20 HMMWV Technical Manual Unit Maintenance Volume 1 Download
Page 313 of 890
TM 9-2320-280-20-1 ALTERNATOR 2-224.4 Change 1 KNOWN INFO POSSIBLE PROBLEMS VOLTAGE OUTPUT INCORRECT REGULATOR HAS ENERGIZING VOLTAGE ALTERNATOR REGULATOR WIRING TEST OPTIONS REASON FOR QUESTION MULTIMETER Determine if high or low output voltage. DIAGNOSTIC FLOWCHART C FROM F.1-3, Page 2-224.2 NO IF OUTPUT VOLTAGE IS NOT CORRECT, REPLACE REGULATOR (Para 4-5.6). RECHECK VOLTAGE. IF VOLTAGE IS STILL NOT CORRECT, REPLACE ALTERNATOR (Para 4-5.2) KNOWN INFO POSSIBLE PROBLEMS ALTERNATOR REGULATOR WIRING VOLTAGE OUTPUT INCORRECT REGULATOR HAS ENERGIZING VOLTAGE TEST OPTIONS REASON FOR QUESTION 1. STE/ICE-R TEST 10 AND 89 (Page 2-750) 2. MULTIMETER As wire 568A is stubbed off, the voltage from wire 5A on red terminal signals regulator to turn on. F.1-4 IDLE ENGINE AT 1200-1500 RPM. DOES VOLTAGE ON 14 VOLT OUTPUT TERMINAL (YELLOW INSULATOR) MEASURE BETWEEN 13.4-14.6 VOLTS? F.1-5 TURN ROTARY SWITCH TO RUN POSITION. CHECK FOR BATTERY VOLTAGE AT RED (ENERGIZE) TERMINAL ON REGULATOR. IS BATTERY VOLTAGE PRESENT? NO NOTIFY DS MAINTENANCE TO REPAIR OR REPLACE WIRING HARNESS YES YES REPLACE REGULATOR (Para 4-5.6). THEN GO TO 5, Page 2-198