TM-9-2320-387-24 HMMWV Direct Support & General Support Maintenance Manual Volume 1 Download
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KNOWN INFO I TEST OPTIONS 1 POWER AVAIlABLE TO THE GAUGES DISCONNECT WIRE 27G AT THE 1. STEXE-R TEST 89 TEMPERATURE GAUGE. WITH THE (Page 2506) TEMPERATURE GAUGE DOESN’T WORK ROTARY SWITCH IN THE RUN 2. MULTIMETER POSITION, DO YOU HAVE BAlTERY VOLTAGE AT WIRE 27G? r REASON FOR QUESTION This is the power wire for I ’ the gauge. POSSIBLE PROBLEMS GAUGE SENDING UNIT WIRING TM 9-2320-387-24-l ~_ INSTRUMENTS CIRCUIT DIAGNOSTIC FLOWCHART I KNOWN INFO 1 TEMPERATURE GAUGE 1 HAS POWER 1 POSSIBLE PROBLEMS 1 I GAUGE UNIT I KNOWN INFO GAUGE GROUND OK POSSIBLE PROBLEMS TEMPERATURE GAUGE SENDING UNIT WIRING I2 1 1 TEST OPTIONS WITH THE ROTARY SWITCH IN THE OFF POSITION, DO YOU I 1. STVICE-R TEST 91 (Page 2-509) HAVE CONTINUITY BETWEEN WIRE 58E AT THE GAUGE AND ENGINE (OR BODY) GROUND? 2. MULTIMETER REASON FOR QUESTION This is the ground wire for the gauge. TEST OPTIONS DISCONNECT WIRE 33A AT THE I 1. STEIICE-R TEST 91 (Page 2-509) GAUGE AND AT THE WIRE 33B AT THE TEMPERATURE SENDING I 2. MULTIMETER UNIT. DO YOU HAVE CONTINUITY FROM WIRE 33A TO WIRE 33B? REASON FOR QUESTION I If etther of these wires are open, 1 the gauge will always read off scale to the left. REPAIR 33A, 33B OR REPLACE YES ? 2-346