TM-9-2320-387-24 HMMWV Direct Support & General Support Maintenance Manual Volume 1 Download
Page 178 of 1205
TM 9-2320-387-24-l FUEL SYSTEM DIAGNOSTIC FLOWCHART KNOWN INFO r OPTIONS VISUAL INSPECT THE FUEL LINES. ARE THE LINES OK? FUEL FILTER OK NO WAX BUILD-UP VENT LINES OK LOW FUEL PUMP PRESSURE POSSIBLE PROBLEMS FUEL PUMP FUEL LINES FUEL PRESSURE TRANSDUCER REASON FOR QUESTION Kinked fuel lines will restrict fuel flow. I DS TEST OPTlONS INSPECT THE FUEL FILTER. VISUAL REMOVE THE FILTER ELEMENT AND CHECK IT FOR DIRT AND OTHER CONTAMINATION. KNOWN INFO NO WAX BUILD-UP VENT LINES OK LOW FUEL PUMP PRESSURE POSSIBLE PROBLEMS IS THE FILTER ELEMENT CLEAN? REASON FOR QUESTION FUEL PUMP FUEL LINES FUEL FILTER FUEL PRESSURE TRANSDUCER A dirty filter will restrict fuel flow. I OPTIONS VISUAL KNOWN INFO FUEL LINES OK FUEL FILTER OK NO WAX BUILD-UP VENT LINES OK LOW FUEL PUMP PRESSURE TRANSDUCEROK POSSIBLE PROBLEMS FUEL PUMP REMOVE FUEL PUMP. INSPECT FUEL PUMP PUSHROD AND CAMSHAFT LOBE. ARE ALL OF THESE PARTS IN GOOD CONDITION? REASON FOR QUESTION If the components that drive the fuel pump are worn. the pump will not operate properly. 2-118