TROUBLESHOOTING (Main Engine) (continued)
TEST OR INSPECTION
If incorrect fuel is suspected, notify Unit maintenance.
5. ENGINE OVERHEATS (COOLANT WARNING LAMP IS LIT)
NEVER remove radiator cap on an overheated engine until engine has cooled.
Step 1. Check to see if engine coolant is low and if any leaks are visible.
If low, fill (p. 3-20).
If leaks are visible, notify Unit maintenance.
Step 2. Check to see if engine oil is low.
If low, fill (Appendix E).
Step 3. Check radiator cap for tight fit.
If cap is loose, tighten cap.
Step 4. Check to see if cooling fan is operating properly.
If fan is not operating properly, notify Unit maintenance.
Step 5. Check to see if radiator/grille is clogged.
If clogged, unclog radiator/grille.
Step 6. Check to see if engine has been left idling for long periods at low rpm.
Increase idle speed to 1000-1200 rpm.
If temperature does not drop after a period of fast idling, shut down engine
(p. 2-99) and notify Unit maintenance.