What was found
AFTER TAKEOFF AT 3000 FT, AFTER SETTING CLIMB POWER ENGINE NR 3 STRUT OVERHEAT WARNING LIGHT ILLUMINATED. UTILIZED EMERGENCY AND NORMAL PROCEDURES. UNABLE TO SAFELY CONTINUE FLIGHT TO DESTINATION WITH ONE PACK OFF (AT LOWER ALTITUDE). DUMPED FUEL TO BELOW LANDING WEIGHT. LANDED AT MMUM SAFELY. ENG NR 3 MODULATING AND SHUTOFF VALVE CLAMPS WERE TIGHTENED. ENGINE NR 3 RUN UP PER MM 75-31-0 AND SETTING EPR AT 1.8. NO LEAKS FOUND.