TM 5-4320-302-14Table 4-2. Organizational Maintenance Troubleshooting - ContinuedMALFUNCTIONTEST OR INSPECTIONCORRECTIVE ACTIONStep 7. Check fuel supply to injectors.WARNINGSevere burns, illness, or death may result ifpersonnel fail to handle diesel fuel oilproperly. Observe the following precautions:·· Do not inhale vapor.·· Do not check fuel supply near open flame,sparks, or excessive heat.·· Be certain fuel lines and connections arenot disconnected.·Work in a well-ventilated area.a. With engine cool, loosen line nuts on injectors one full turn. Check that3-way selector valve is properly alined.b. Hold a lint-free cloth around injector line nuts to collect leakage.To prevent starter from overheating, do notcrank engine with starter for more than 10seconds.Battery life will be lengthened if 60 secondsis allowed to elapse between starting attempts.Under any condition, if engine does not starton initial attempt, allow engine rotation tostop completely before again engaging starter.Prime the centrifugal pump as soon as possibleafter engine starts. Rotation of impeller withoutwater in volute will damage pump components.c. Without depressing pushbutton of fault sensitive control switch, pushSTART button and observe fuel flow from injector fittings until airis cleared from lines.If there is no fuel flow, replace fuel filter and clean fuel feed pumpstrainer as described in table 4-1, step 4.4-37
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