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 ENGINE COOLING KNOWN INFO I FAN BLADES OK SERPENTINE BELT OK FAN TEMPERATURE SWITCH OK FAN DRIVE OK POSSIBLE PROBLEMS TP SENSOR TIME-DELAY MODULE FAN CUT-OFF WIRING KNOWN INFO FAN OK SERPENTINE BELT OK FAN TEMPERATURE SWITCH OK PCB OK TP SENSOR OK FAN CUT-OFF WIRING OK POSSIBLE PROBLEMS TIME-DELAY MODULE IS THERE CONTINUITY FROM WIRE 315D AT THE TIME-DELAY MODULE TO WIRE 3158 AT THE TP SENSOR OR FAN CUT-OFF SWITCH? (DISCONNECT THE WIRES TO MAKE THE MEASUREMENT.) DIAGNOSTIC FLOWCHART T OPTIONS 1. STVICE-R TEST 91 (Page 2-508: 2. MULTfMETER REASON FOR QUESTION The TP sensor and fan cut-off switch will disengage the fan for 20 seconds. HOLD THE INJECTOR PUMP WIDE OPEN WITH THE ROTARY SWITCH IN RUN. IS THERE BATTERY VOLTAGE ON THE TIMER END OF WIRE 315D? ;T OPTIONS 1. STE/ICE-R TEST 69 (Page 2-506 2. MULTIMETER REASON FOR QUESTION This will simulate the TP sensor and fan cut-off system’s ability to disengage the fan. 2-l 72