TM-9-2320-387-24 HMMWV Direct Support & General Support Maintenance Manual Volume 1 Download
Page 161 of 1205
TM 9-21’O-387-24-1 REFERENCE INFORMATION MAKE SURE AU ELECTRICAL CONNECTtONS ARE CLEAN AND TIGKT. CHECK FUEL SOLENOID, COLD ADVANCE SOLENOID. BAll-ERIES. ROTARY SWITCH, ETC. 1. While cranking or running the engine, open the drain fitting and drain some fuel into a clear container. 2. The fuel should come out of the open -drainvalve in a steady stream. If it doesn’t, then answer NO to this question. l NOTE: Nothing will come out unless the engine is running or cranking. 3. Close the drainvalve and turn the rotary switch to STOP. 4. Check the fuel that came out to be sure that it isn’t contaminated with water or dirt. 5. If the fuel didn’t come out in a steady stream or if it is contaminated, answer NO to this question. - i If you have trouble starting the engine, you should have entered here by way of the startability tests. If you didn’t begin there, go back to page 2-45 and run the startability top level test. At this point, you don’t care how well it starts or runs but just that it will run. The answer to this question is NO if the engine seems to start but stops almost immediately. - : Engine temperature may be determined from vehicle temp. gauge (rotary switch must be in RUN position) or by touching the engine. If it is too hot to touch com- fortably, it is above 120° F (49O C). Hard starting can be caused by other things such as fuel in the lines leaking back into the tank while the engine is shut down. This will occur if there is an air leak in the lines. 0 II FUEL SYSTEM . . WARNING Diesel fuel is highly flammable. Do not perform any procedures near fire, flames, or sparks. Severe injury or death will result. WARNING A hot engine may cause serious burns. Always use caution when approaching a hot engine. FUEL FILTER DRAIN FtlTlNG 2-101