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 INSTRUMENTS CIRCUIT, H&s9 TEST opT,olAGNOSTIC FLOWCHART I I KNOWN INFO I POWER AVAILABLE TO THE GAUGES OIL PRESSURE GAUGE DOESNT WORK WIRING OIL PRESSURE GAUGE HAS POWER POSSIBLE PROBLEMS SENDING UNIT KNOWN INFO GAUGE GROUND OK POSSIBLE PROBLEMS OIL PRESSURE GAUGE SENDING UNIT WIRING DISCONNECT WIRE 27H AT THE OIL PRESSURE GAUGE. WITH THE ROTARY SWITCH IN THE RUN POSITION, DO YOU HAVE BATTERY VOLTAGE AT WIRE 27H? I I 1 1. STE/ICE-R TEST 89 (Page 2-506) 2. MULl-lMETER REASON FOR QUESTION This is the cower wire for the gauge. t H2 I TES WITH THE ROTARY SWITCH IN THE OFF POSITION, DO YOU HAVE CONTINUITY BETWEEN WIRE 58G AT THE GAUGE AND ENGINE (OR BODY) GROUND? I r OPTIONS 1. ST&ICE-R TEST 91 (PAGE 2-508) 2. MULTIMETER REASON FOR QUESTION This is the ground wire for the gauge. r TEST OPTIONS 1. STE/lCE-R TEST 91 DISCONNECT WIRE 36A AT THE GAUGE AND AT THE OIL (Page 2-508) PRESSURE SENDING UNIT. DO 2. MULTIMETER YOU HAVE CONTINUITY THROUGH WIRE 36A? RECONNECT WIRE 36A AFTER MAKING THE MEASUREMENT. REASON FOR QUESTION If this wire is open, the gauge will always read offscale to the 2-342