TM 5-4310-354-14
Table 3-2. Operator/Crew Troubleshooting - Continued
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
ENGINE - continued
4. ENGINE LACKS POWER - continued.
Step 2.
Check for restriction in engine exhaust.
Remove any exhaust restriction.
Step 3.
Check fuel filter replacement interval.
Replace fuel filter at proper interval.
Step 4.
Check for contaminated fuel or improper fuel grade.
Drain fuel tank and refill with clean fuel of proper grade.
Step 5.
Check for air in fuel injection system.
Purge air from fuel injection system (figure 3-17).
Step 6.
Any other causes for lack of power.
Notify organizational maintenance.
5. ENGINE KNOCKS, DEVELOPS EXCESSIVE NOISE, OR VIBRATES.
Step 1.
Check engine oil level.
Fill crankcase to full mark on dipstick. Refer to LO 5-4310-354-12, figure 3-1.
Step 2.
Check to see if proper grade of fuel is being used or if fuel is contaminated.
If fuel grade is not correct, or contaminated, drain fuel tank, refill with proper grade, change
fuel filter, and purge system of air.
Step 3.
Engine overloaded or speed is too high.
Notify organizational maintenance for speed control adjustment.
Step 4.
Check to see if engine is overheated.
If engine is overheated, add coolant to radiator as necessary.
If coolant is not low, the
thermostat may be defective. Notify organizational maintenance.
Step 5.
Check for other causes.
Notify organizational maintenance.
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