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TM 5-4320-306-24
Table 2-2. Organizational Maintenance Troubleshooting
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 turbo-
charger 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
2-26
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