TM-9-2320-387-24 HMMWV Direct Support & General Support Maintenance Manual Volume 1 Download
Page 162 of 1205
TM 9-2320-387-24-l FUEL SYSTEM I KNOWN INFO I DIAGNOSTIC FLOWCHART FUEL SOLENOID OK COLD ADVANCE OK FUEL LINES FUEL FILTER FUEL PUMP KNOWN INFO FUEL SOLENOID OK COLD ADVANCE OK -1 FUEL LINES FUEL FILTER FUEL PUMP KNOWN INFO FUEL PUMP -7 AND FILTER OK POSSIBLE PROBLEMS 1 INJECTION PUMP INJECTORS FUEL SUPPLY LINES 1 FUEL RETURN LINES RETURN CHECK VALVE I KNOWN INFO FUEL LINES, PUMP AND FILTER OK POSSIBLE PROBLEMS INJECTION PUMP INJECTORS EXHAUST RESTRICTED 4 1 t TEST OPTIONS IS THE FUEL SUPPLY PRESSURE 1. STE/ICE-R TEST 24 GREATER THAN 3 PSI (20.69 kPa) (Page 2-494) AT ALL SPEEDS? 2. PRESSURE GAUGE REASON FOR QUESTION This is to verify that the fuel supply lines, fuel pump, and fuel filter are OK. 5 1 TEST OPTIONS IS THE FUEL VOLUME AT THE Fuel pump volume test INJECTION PUMP INLET 1 PINT IN 30 SECONDS WHILE CRANKING? This is to verify that the fuel sup~lv lines. fuel oumo. and fuel I filter are OK. ’ 6 1 1 TEST OPTIONS DOES THE ENGINE RUN SMOOTHLY? F;zN;PND LsTEN To REASON FOR QUESTION If it runs smoothly, then it is not an individual cylinder fault such as a bad injector. TEST OPTIONS IS THE IDLE SPEED 700 TO 750 ST&ICE-R TEST 10 (Page 2-490)