TM-9-2320-280-20 HMMWV Technical Manual Unit Maintenance Volume 1 Download
Page 305 of 890
2-220 Change 2 TM 9-2320-280-20-1 ALTERNATOR DIAGNOSTIC FLOWCHART E5 REPLACE REGULATOR (Para. 4-114). THEN GO TO STEP 5, Page 2-198. TEST OPTIONS STE/ICE Test 89, (page 2-750) TEST OPTIONS STE/ICE Test 10 and 90, (pages 2-734 and 2-751). REASON FOR QUESTION This connection applies full current loading to field coil. Alternator current output should be near maximum. E6 NO YES DISCONNECT ALTERNATOR-TO- REGULATOR CABLE. START ENGINE AND SET IDLE 1200-1500 RPM. USING 15 AMP CAPACITY JUMPER WIRE, MOMENTARILY CONNECT PIN “A” OF ALTERNATOR CONNECTOR TO ENGINE GROUND. DOES CURRENT RISE DURING CONNECTION TO 180 - 220 AMPS? NO YES REPLACE ALTERNATOR, (Para. 4-109). THEN GO TO STEP 5, Page 2-198. FROM E4, Page 2-218.2 KNOWN INFO VOLTAGE OUTPUT INCORRECT FUSIBLE LINK OK POSSIBLE PROBLEMS ALTERNATOR REGULATOR WIRING KNOWN INFO VOLTAGE OUTPUT INCORRECT REGULATOR HAS ENERGIZING VOLTAGE FUSIBLE LINK OK POSSIBLE PROBLEMS ALTERNATOR REGULATOR REASON FOR QUESTION As wire 568A is stubbed off, the voltage from wire 5A on red terminal signals regulator to turn on. NOTIFY DS MAINTENANCE TO REPAIR OR REPLACE WIRING HARNESS. TURN ROTARY SWITCH TO “RUN” POSITION. CHECK FOR BATTERY VOLTAGE AT RED (ENERGIZE) TERMINAL ON REGULATOR. IS BATTERY VOLTAGE PRESENT?