TM 5-4320-302-14Table 4-2. Organizational Maintenance Troubleshooting - ContinuedMALFUNCTIONTEST OR INSPECTIONCORRECTIVE ACTIONNOTEThe fuel feed pump is cam driven. If high point ofcamshaft cam is in contact with fuel feed pumpcam lever, fuel system cannot be primed nor airbled from fuel system using fuel feed pump.c. Tighten vent screw on top of fuel filter.d. Loosen breather plug on top of engine shutdown valve, four complete turns.e. Place ON-ENGINE-OFF switch in ON position.f. Press and hold in the fault sensitive control button.g. Push and pull ENGINE PRIME T-handle until all air is removed fromengine shutdown valve and fuel flows freely.h. Tighten breather plug on top of engine shutdown valve.i. Loosen line nuts on injectors, one full turn.j. Hold a lint-free cloth below injectors to collect leakage.WARNINGPriming discharge mixture of water and exhaust gasesmay cause severe burns or injury. Wear gloves andsafety glasses when priming pump.·Stand clear of venturi during priming.Prime the centrifugal pump as soon as possible afterengine starts. Rotation of impeller without water involute will damage pump components.To prevent starter from overheating, do not crankengine with starter for more than 10 seconds.Battery life will be lengthened if 60 seconds is allowedto elapse between starting attempts.Under any condition, if engine does not start oninitial attempt, allow engine rotation to stop com-pletely before again engaging starter.k. Pull throttle full open and lock by turning clockwise.I. Press and hold in the fault sensitive control button, push START buttonand observe fuel flow from injector fittings until air is cleared from lines.m. Tighten line nuts on injectors.n. Push throttle closed.o. Start engine as described in paragraph 2-5.4-36
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