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TM 5-4320-305-24
Table 2-2. Organizational Maintenance Troubleshooting - Continued
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
3. ENGINE RUNS UNSTEADILY AND POWER OUTPUT IS LOW
Step 1. Check air cleaner intake restriction indicator for red band indicating blocked air cleaner elements.
If red band appears in air cleaner restriction indicator and rain cap is not blocked and no damage to
system components is found, replace primary and secondary elements (para 2-26).
Step 2. Be sure that fuel tank fill cap vent is in open position. A closed vent will cause a vacuum in the fuel tank
and not allow fuel to flow freely to the fuel feed pump.
If vent is in closed position, rotate cap vent to open position.
Step 3. Check fuel supply to injectors.
If there is no fuel flow, replace fuel filter and clean fuel feed pump strainer as described in paragraphs
2-30 and 2-32.
Step 4. Check air inlet and turbocharger for obstructions, carbon or dirt buildup on turbocharger impellers, or oil
leaks.
Notify direct support.
Step 5. a. Check quick release link and lever extension for dirt, corrosion, damage, or loose nuts, washers,
bolts, screws, and quick disconnect fittings.
Clean; tighten hardware and quick disconnect fittings. Replace if severely damaged (para 2-24),
b. Remove and check throttle actuator.
Replace defective throttle actuator (para 2-24).
Step 6. Check magnetic pickup wiring for continuity, breaks, burrs, or fraying. Check for loose or damaged
connectors.
Replace wires or connectors if broken or damaged (para 2-15 and 2-16).
Step 7. Notify direct support.
2-28
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