TM 5-4320-302-144-22.FUEL TANK LINES AND FITTINGS (CONT)Location/ItemActionRemarksBLEEDING AIR FROMFUEL SYSTEMWARNINGSevere burns, illness, or death may result if personnelfail to handle diesel fuel oil properly. Observe thefollowing precautions:Do not inhale vapor.Do not handle fuel near open flame, sparks, orexcessive heat.Be certain fuel lines and connections are secure.Work in a well-ventilated area.6.Fuel filterLoosen vent screw on top of fuel filter, fourcomplete turns.7.ENGINEPush and pull ENGINE PRIME T-handle untilPRIMEall air is removed from fuel filter and fuel flowsT-handlefreely.NOTEThe fuel feed pump is cam driven. If high point ofcamshaft cam is in contact with fuel feed pump camlever, fuel system cannot be primed nor air bled fromfuel system using fuel feed pump.8.Fuel filterTighten vent screw on top of fuel filter.9.Engine shut-Loosen breather plug on top of engine shutdowndown valvevalve, four complete turns.10.ON-ENGINE-Place in ON position.OFF switch11.Fault sensi-Press and hold in.tive controlpushbutton12.ENGINEPush and pull ENGINE PRIME T-handle untilPRIMEall air is removed from engine shutdown valve andT-handlefuel flows easily.4-115
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