TM-9-2320-280-20 HMMWV Technical Manual Unit Maintenance Volume 1 Download
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2-110 C1 KNOWN INFO HARD COLD STARTING POSSIBLE PROBLEMS COLD ADVANCE CIRCUIT GLOWPLUG CIRCUIT FUEL SYSTEM TM 9-2320-280-20-1 FUEL SYSTEM DIAGNOSTIC FLOWCHART TEST OPTIONS 1. STE/ICE-R Test 89, (Page 2-750) 2. Multimeter REASON FOR QUESTION Need battery voltage to energize cold advance solenoid. KNOWN INFO POWER TO COLD ADVANCE SOLENOID POSSIBLE PROBLEMS COLD ADVANCE CIRCUIT GLOWPLUG CIRCUIT FUEL SYSTEM KNOWN INFO COLD ADVANCE CIRCUIT OK POSSIBLE PROBLEMS GLOWPLUG CIRCUIT FUEL SYSTEM TEST OPTIONS Perform checks at right (Page 2-111) REASON FOR QUESTION Cold advance circuit can cause hard cold starting. TEST OPTIONS Fuel system tests REASON FOR TESTS The glowplug circuit operates during cold start. C3 C2 NO YES Go to M Page 2-130 C From 3, Page 2-96 Disconnect wire 569B/569D from cold advance solenoid. With rotary switch in “RUN” position, is there battery voltage at wire 569B/569D? Reconnect wire 569B/569D. Is the cold advance circuit working? Perform Glowplug Tests, Page 2-303. If no faults found, continue fuel system tests. NO YES Notify DS Maintenance