TM-9-2320-280-20 HMMWV Technical Manual Unit Maintenance Volume 1 Download

TM 9-2320-280-20-1 KNOWN INFO POSSIBLE PROBLEMS TEST OPTIONS REASON FOR QUESTION KNOWN INFO POSSIBLE PROBLEMS TEST OPTIONS REASON FOR QUESTION KNOWN INFO POSSIBLE PROBLEMS TEST OPTIONS REASON FOR QUESTION NO YES NO YES 2-318.6 Change 1 A FROM 3, Page 2-318.2 GLOWPLUGS DO NOT DRAW ENOUGH CURRENT GLOWPLUGS GLOWPLUG CONTROLLER CABLES A1 TURN THE ROTARY SWITCH TO “RUN”. DO THE GLOWPLUGS DRAW AT LEAST 15 AMPS? 1. STE/ICE-R TEST 80 (Page 2-749) 2. MULTIMETER GO TO C, Page 2-318.10 GLOWPLUGS DRAW SOME BUT NOT ENOUGH CURRENT DISTRIBUTION BOX OK GLOWPLUGS GLOWPLUG CONTROLLER CABLES DO THE GLOWPLUGS CYCLE PROPERLY? 1. STE/ICE-R TEST 80 (Page 2-749) 2. MULTIMETER If the glowplugs cycle properly, the glowplug controller is OK. GO TO B, Page 2-318.8 GLOWPLUGS DRAW SOME BUT NOT ENOUGH CURRENT DISTRIBUTION BOX OK GLOWPLUG CONTROLLER OK GLOWPLUGS CABLES A3 CHECK THE GLOWPLUGS AND WIRES USING THE PROCEDURE ON THE RIGHT-HAND PAGE. REPAIR OR REPLACE PARTS AS REQUIRED. RERUN THE MAIN TEST CHAIN. SEE THE PROCEDURE ON THE RIGHT HAND PAGE AND USE: 1. STE/ICE-R TEST #91 (Page 2-752) 2. MULTIMETER Since the glowplugs draw some current and cycle properly, the only reason they wouldn't draw enough current is that the glow- plugs themselves are bad or the wires are no good. A2 A working glowplug draws 12-15 amps. If at least one glowplug is working, the distribution box is OK. GLOWPLUGS DIAGNOSTIC FLOWCHART