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 GLOW PLUGS CIRCUIT KNOWN INFO GLOW PLUGS DC NOT DRAW ENOUGH CURRENT POSSIBLE PROBLEMS GLOW PLUGS GLOW PLUG CONTROLLER CABLES KNOWN INFO BUT NOT ENOUGH CURRENT PCB OK GLOW PLUGS GLOW PLUG I CONTROLLER CABLES I KNOWN INFO GLOW PLUGS DRAW SOME BUT NOT ENOUGH POSSIBLE PROBLEMS GLOW PLUGS CABLES TURN THE ROTARY SWITCH TO RUN. DO THE GLOW PLUGS DRAW AT LEAST 15 AMPS? 1. STEIfCE-R TEST 80 (Page 2-505) 2. MULTIMETER REASON FOR QUESTION A working glow plug draws 12-15 amps. If at least one glow plug is working, the PCB is OK. DO THE GLOW PLUGS CYCLE PROPERLY? TEST OPTIONS 1 CHECK THE GLOW PLUGS AND WIRES USING THE PROCEDURE ON THE RIGHT-HAND PAGE. REPAIR OR REPLACE PARTS AS REQUIRED. RERUN THE MAIN TEST CHAIN. 1. STEIlCE-R TEST 80 (Page 2-505) 2. MULTlMETER REASON FOR QUESTlON If the glow plugs cycle property, the glow plug controller is OK T OPTtONS SEE THE PROCEDURE ON THE RIGHT-HAND PAGE AND USE: 1. STEXE-R TEST 91 (Page 2-598) 2. MULTIMETER REASON FOR OUESTION Since the glow plugs draw some current and cycle property, the only reason they wouldn’t draw enough current is that the glow plugs themselves are bad or the wires are no good. 2-294