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TM 5-4320-306-24
Table 2-2. Organizational Maintenance Troubleshooting
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
2. ENGINE CRANKS BUT FAILS TO START
Step 1 Check that OIL BY-PASS switch has been depressed prior to starting
Press OIL BY-PASS switch and attempt to start engine (para 2-40)
Step 2 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 3. 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 4. Check alinement of 3-way selector valve
Aline 3-way selector valve to open position (para 2-41).
Step 5 Check for empty fuel tank.
If fuel tank is empty, fill with diesel fuel oil and bleed air from fuel system
Step 6 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 7. Check air inlet and turbocharger for obstructions, carbon or dirt buildup on turbo-
charger impellers, or oil leaks.
Notify direct support.
Step 8. 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).
Step 9. Remove and check throttle actuator
Replace defective throttle actuator (para 2-24)
2-25
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