TM 5-4320-306-10
Table 3-1. Operator/Crew Troubleshooting - Continued
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
3. UNEVEN RUNNING OR FREQUENT STALLING
WARNING
Death or serious injury could occur if diesel fuel oil is not handled carefully. Use in a well-
ventilated area away from open flame, arcing equipment, ignition sources, heaters, or excessive
heat. Be certain that fuel lines and connections are secure. Do not inhale vapor. Do not overfill
fuel tank. Engines must be turned off and cooled before refueling. Use proper refueling
procedures and equipment to avoid spillage. Do not run engines near open fuel containers. DO
NOT SMOKE.
CAUTION
Low air density of high altitude operation will tend to make the engine run hotter. A high
temperature condition may cause abnormal engine operation.
Step 1. Check for insufficient fuel supply.
Refill low tank. Perform the checks and services of table 2-2, item 19. If tank is empty, notify
organizational maintenance.
Step 2. Check for malfunctioning engine shutdown valve.
Perform the checks and services of table 2-2, item 24.
Step 3. Check for loose connections or restricted or damaged fuel lines.
Perform the checks and services of table 2-2, item 20. Report damaged lines or loose connections
to organizational maintenance.
Step 4. Inspect water separator for water in collection bowl.
Perform the checks and services of table 2-2, item 39.
Step 5. Check engine air cleaner restriction indicator. If indicator shows red with engine shut off, and no damage
to system components is found, replace primary and secondary elements (para 3-8).
3-4
