TM-9-2320-387-24 HMMWV Direct Support & General Support Maintenance Manual Volume 1 Download
Page 179 of 1205
TM 9-2320-387-24-l REFERENCE INFORMATION -4 Fuel lines should be inspected for kinks, cracks, or anything that would restrict fuel flow or allow air to enter the lines. Be sure to check the lines all the way back to the tank and remember that there is a strainer .inside the tank which can become plugged. You will have to remove the tank if it becomes necessary to check this. I Replace fuel lines (para. 3-26). Poor starting and excessive smoke after start-up can be the result of a restticted fuel supply. This restriction most likely will be from a plugged fuel filter but can also be caused by a pinched or kinked fuel line. After the engine warms up. it generally will run satisfactorily. If the restriction gets progressively worse, top speed and performance will also be affected. -. --I FUNGUS In warm or humid weather, fungi and/or bacteria in the fuel can cause fuel system damage by plugging the fuel lines, filter, or injection noules. FUEL SYSTEM I For removal, replacement, and torques, refer to para. 3-34 or notify DS maintenance (chapter 16). Excessive roughness on any of these pans is an indication of wear. The pushrod should slide smoothly in the engine block. If you notice any roughness on the end of the pushrod, be sure to check the lobe on the camshaft. NOTE H the pump or rod is worn, replace (para. 3-24). If the lobe on the camshaft is worn, notify DS maintenance (chapter 16). Rerun Test Chain You may have corrected some problems but there may be others including the fuel pump. For removal, replacement and torques, refer to para. 3-24.