TM-9-2320-280-20 HMMWV Technical Manual Unit Maintenance Volume 1 Download
Page 321 of 890
TM 9-2320-280-20-1 ALTERNATOR 2-224.12 Change 1 KNOWN INFO POSSIBLE PROBLEMS VOLTAGE OUTPUT INCORRECT ALTERNATOR REGULATOR WIRING TEST OPTIONS REASON FOR QUESTION 1. STE/ICE-R TEST 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. DIAGNOSTIC FLOWCHART C FROM H3, Page 2-224.10 NO NOIFY DS MAINTENANCE TO REPAIR OR REPLACE WIRING HARNESS KNOWN INFO POSSIBLE PROBLEMS ALTERNATOR REGULATOR VOLTAGE OUTPUT INCORRECT REGULATOR HAS ENERGIZING VOLTAGE TEST OPTIONS REASON FOR QUESTION STE/ICE-R TEST 10 AND 90 (pages 2-734 and 2-751) This connection applies full current loading to field coil. Alternator current output should be near maximum. H4 TURN ROTARY SWITCH TO RUN POSITION. CHECK FOR BATTERY VOLTAGE AT RED (ENERGIZE) TERMINAL ON REGULATOR. IS BATTERY VOLTAGE PRESENT? H5 DISCONNECT ALTERNATOR- TO-REGULATOR CABLE. START ENGINE AND SET IDLE 1200-1500 RPM. USING 15-AMP CAPACITY JUMPER WIRE, MOMENTARILY CONNECT TO PIN A OF ALTERNATOR CONNECTOR. DOES CURRENT AND VOLTAGE RISE DURING CONNECTION? NO REPLACE REGULATOR (Para 4-5.11). THEN GO TO 5, Page 2-198 YES YES REPLACE REGULATOR (Para 4-5.14). THEN GO TO 5, Page 2-198