ARMY TM 9-6115-604-12
NAVY NAVFAC P-8-633-12
Table 3-3. Operator Troubleshooting (Continued)
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
4. ENGINE SHUTS DOWN AND WILL NOT RESTART.
The radiator gets very hot during operation. Allow engine to cool before removing
radiator cap.
If low, add coolant as required by temperature conditions, in accordance with para-
graph 3-13.
If coolant level is normal, check for loose or broken fan belt. Check idler pulley and
fan belt for looseness. Check for proper ventilation of engine and radiator. Open all
louvers, as necessary. If no deficiencies are uncovered, refer to the next higher level
of maintenance.
Step 3.
If HI LUBE OIL TEMP Indicator lamp is lit, check lube oil level using oil level gage.
Add lube oil as required.
Step 4.
If LOW LUBE OIL PRESS indicator lamp is lit, check lube oil level using oil level gage
Add lube oil as required.
Step 5
If LOW FUEL LEVEL Indicator lamp Is lit, check level of fuel In tank.
Refill as required
Step 6.
Inspect fuel system components for leaks in accordance with paragraph 3-12
If fuel leakage is observed, refer to the next higher level of maintenance for repair
Step 7
Check OVERSPEED Indicator lamp
Reset speed switch and attempt to restart If OVERSPEED indicator lights again, refer to the next
higher level of maintenance
5. ENGINE RUNS ERRATICALLY OR MISFIRES.
Step 1
Drain sample from fuel tank, see Figure 1-1, and visually Inspect for cloudy fuel or air bubbles.
If contamination exists, drain fuel tank, fuel lines, replace fuel filters, and clean fuel strainer. Ensure
the auxiliary fuel source Is Inspected and replaced as necessary Bubbles in the fuel Indicate air in the
fuel system Check fuel lines from fuel manifold to fuel tank and tighten fittings as necessary.
Step 2.
Disconnect fuel line between EFC fuel injection pump and fuel manifold, see Figure 1-8, and draw
sample.
Visually Inspect for cloudy fuel or air bubbles.
If contamination exists, follow procedure In Step 1, above Refer EFC fuel injection pump to direct
support maintenance level for purging or replacement.
Step 3
Check air restriction Indicators for amber or red signal.
If either or both air restriction Indicators show amber or red, service air cleaner filters in accordance
with paragraph 3-15.
Step 4.
With engine running, check the engine exhaust fumes If fumes are excessively black proceed to
malfunction 6 below. If fumes are blue or white proceed to malfunction 7, below
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