TM 5-4310-386-14
Table 4-2. Unit Troubleshooting Procedures (Cont).
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
4. ENGINE GIVES POOR PERFORMANCE (Cont).
Step 5. Check to see if fuel filter and/or lines are fouled.
a. Clean or replace fuel filter para. 4-33).
b. Replace fuel lines (para. 4-31).
Step 6. Check to see if there is air in fuel system.
Air bleed the fuel system (para. 4-30).
Step 7. Check to see if fuel feed pump is defective.
Replace defective fuel feed pump (para. 4-32).
Step 8. Check to see if exhaust back pressure is excessive.
Clean cooling systems of contamination (para. 4-42).
5. ENGINE OIL PRESSURE ZERO OR TOO LOW.
Step 1. Check to see if engine is excessively inclined.
Ensure that inclination is no greater than 15 degrees in direction.
Step 2. Check to see if engine oil is too low.
Fill to proper level (para. 4-29).
Step 3. Check to see if wrong grade of motor oil is being used.
Change to proper viscosity oil.
Step 4. Check to see if lube oil cooler is soiled.
Clean exterior and flush core (para. 4-51).
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