TM-5-4310-389-14
Table 3-2. Unit Troubleshooting Procedures (Continued)
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
18.
Engine fails to start or difficult to start (Contd).
Step 2. Check to see if engine shutdown lever has been placed in operating position. Place
shutdown lever in operating position.
Step 3. Check to see if the speed control lever has been placed in the starting position. Set speed
control lever to about one-quarter speed.
Step 4. Check to see if fuel tank is empty and/or the fuel cock is closed. Open fuel cock; fill tank as
needed.
Step 5. Check to see if there is air in the fuel system. Air bleed the fuel system.
Step 6. Check to see if cable connections of starter motor circuit are loose. Tighten connections.
Step 7. Check to see if wrong grade of motor oil has been used. Change to proper viscosity oil.
Step 8. Check to see if fuel filters and/or lines are fouled. Replace fuel filter. Inspect fuel for
contamination; clean tank.
Step 9. Check to see if starting aid is defective. Notify Direct Support Maintenance. Replace
starting aid or ensure ether reservoir is full.
19.
Temperature Shutdown Activates.
Step 1. Check to see if oil level is too low. Fill to required level.
Step 2. Check to see if oil level is too high. Drain to proper level.
Step 3. Check to see if blower V-belt is loose, cracked, or broken. Replace V-belt.
Step 4. Check to see if cooling air is heating up (heat is being recycled). Clean cooling system of
contaminants. Ambient temperature above operating parameters.
Step 5. Check to see if cooling fins are soiled. Clean the cooling system.
Step 6. Check to see if air cowling plates are loose, cracked, or missing. Tighten or replace, as
needed.
Step 7. Check to see if lube oil cooler is soiled. Clean oil cooler to ensure heat transfer to
surroundings and/or flush core.
Step 8. Check to see if air cleaner is contaminated. Clean or replace air cleaners.
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