Table 3-1. Troubleshooting - CONT.
Test or Inspection
CRANKS BUT FAILS TO START.
Step 1. Check if three DDEC circuit breakers (1) have been tripped.
Reset breakers and try again. If breakers trip again, notify Unit
Step 2. Check fuel shut off valve behind wet tank in air dryer assembly to be
sure it is open.
If valve is closed, open it.
Step 3. Check indication on fuel gage (2).
Step 4. Visually check fuel level in main fuel tank (3) and auxiliary fuel tank,
If fuel tank(s) are empty, add fuel to tank (Para 2-13), turn on
power switch and let electric fuel pump (clicking sound) run
20 minutes to prime fuel system.
Step 5. Check if electric fuel pump is working.
Turn on power switch and listen for clicking sound at main
If clicking, go to Step 6.
If no clicking is heard, notify Unit Maintenance.
Step 6. Check air filter restriction indicator (4).
If indicator shows 17 in. (4.2 kPa) or more, reset filter indicator
button. If indicator still shows 17 in. (4.2 kPa) or more, notify
If condition persists, notify Unit Maintenance.