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 FAN ENGAGES BUT WON-T DISENGAGE 1 POSSIBLE PROBLEMS 1 PCB TIME-DELAY MODULE WIRING HYDRAULIC SYSTEM I I KNOWN INFO DRIVE OK FAN ENGAGES BUT WONT DISENGAGE POSSIBLE PROBLEMS PCB TIME-DELAY MODULE WIRING HYDRAULIC SYSTEM KNOWN INFO DRIVE OK FAN ENGAGES BUT WONT DISENGAGE POSSIBLE PROBLEMS PCB TIME-DELAY MODULE WIRING HYDRAULIC SYSTEM REMOVE THE JUMPER BETWEEN WIRE 458A AND WIRE 4588. TURN THE ROTARY SWITCH TO THE RUN POSITION. DOES WIRE 458A HAVE BAITERY VOLTAGE? DIAGNOSTIC FLOWCHART REASON FOR QUESTION IS THERE CONTINUITY FROM WIRE 4588 AT THE HARNESS SIDE OF THE TIME-DELAY MODULE 4-WAY CONNECTOR TO WIRE 458B AT THE FAN TEMPERATURE SWITCH? Wire 458A connects battery voltage to the switch. 1. STE/ICE-R TEST 91 (Page 2-50 2. MULTIMETER REASON FOR QUESTION Li c3 TURN THE ROTARY SWITCH TO RUN. IS THERE BAlTERY VOLTAGE AT THE HARNESS SIDE OF WIRE 583B IN THE 4-WAY CONNECTOR OF THE TIME-DELAY MODULE? Wire 4588 connects the switch and the time delay. 1. STUICE-R TEST 89 (Page 2-506) 2. MULTIMETER REASON FOR QUESTION Wire 5838 connects battery voltage to the delay module. REPAIR/REPLACE 2-178