TM-9-2320-280-20 HMMWV Technical Manual Unit Maintenance Volume 1 Download
Page 184 of 890
TM 9-2320-280-20-1 REFERENCE INFORMATION MAKE SURE ALL ELECTRICAL CONNECTIONS ARE CLEAN AND TIGHT. CHECK FUEL SOLENOID, COLD ADVANCE SOLENOID, BATTERIES, ROTARY SWITCH, ETC. 1. While cranking or running the engine open the drain fitting end drain some fuel into a clear container. 2. The fuel should come out of the open drain valve in a steady stream, if it ● 3. 4. 5. doesn't, than ANSWER NO TO THIS QUESTION. NOTE: Nothing will come out unless the engine is running or cranking. Close the drain valve and turn the rotary switch to STOP. Check the fuel that came out to be sure that it isn’t contaminated with water or dirt. If the fuel didn’t come out in a steady stream or if it is contaminated then ANSWER NO TO THIS QUESTION. If you have trouble starting the engine you should have entered here byway of the Statability tests. If you didn’t begin there, go beck to Page 2-41 and the the Startability top level teat. 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 WARNING FUEL SYSTEM Diesel fuel is highly flammable. Do not perform any procedures near fire, flames, or sparks. Severe injury ordeath will result WARNING fortably than it is above 120° F (49° C). Hard stating 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. A hot engine may cause serious bums. Always use caution when approaching a hot engine. 2-97