TM-9-2320-387-24 HMMWV Direct Support & General Support Maintenance Manual Volume 1 Download
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TM 9-2320-387-24-l ELECTRICAL KNOWN INFO POWER CAN BE TURNED OFF POSSIBLE PROBLEMS PCB ROTARY SWITCH BATTERY STARTER CIRCUIT BREAKERS WIRING KNOWN INFO I ROTARY SWITCH OK CIRCUIT BREAKER 2 OK PCB ALTERNATOR WIRING DIAGNOSTIC FLOWCHART -- WITH THE ROTARY SWITCH IN THE RUN POSITION, IS THE INSTRUMENT CLUSTER VOLTMETER IN THE YELLOW OR GREEN ZONE? REASON FOR QUESTION This quickly verffies that power is getting from the batteries to the rotary switch and the batteries aren’t discharged. DO ALL OF THE GAUGES WORK PROPERLY WITH THE ENGINE RUNNING? KNOWN INFO ROTARY SWITCH OK ClRCUlT BREAKER 2 OK POSSIBLE PROBLEMS PCB ALTERNATOR WIRING iT OPTIONS l.TRYlT. 2. LOCK. REASON FOR QUESTION Power may not be making it through circuit breaker 2 to the instrument panel. 1 TEST OPTIONS DOES THE HEATER FAN WORK I TURN HEATER ON AND CHECK WITH THE ROTARY SWITCH IN FOR AIRFLOW. THE RUN POSITION? REASON FOR QUESTlON The heater fan should work I with the rotary switch in the