What was found
ON CLIMB OUT PASSING 16000 EICAS MESSAGE L ENG OVHT. LEVELED AT 19000 TO COMPLY WITH QRH 8.1.20. L ENG THROTTLE WAS BROUGHT TO IDLE AND MESSAGE CLEARED AFTER APPROXIMATELY 30 SECONDS. CONTINUED CLIMB TO 350 AND CONTINUED TO DESTINATION WITH NO FURTHER ISSUES OR ABNORMAL INDICATIONS NOTED AT ANY TIME. EMERGENCY WAS DECLARED DUE TO NON NORMAL LANDING CONFIGURATION PER QRH. FOUND AFT V-BAND CLAMP NOT SECURED ON THE INTERMEDIATE PRESSURE CHECK VALVE. WAS LEAKING WITH APU AIR APPLIED. TIGHTENED V-BAND CLAMP, LEAK CHECKED AND FOUND NO AIR LEAKING. RAN ENGINE REF JRH, LEAK CHECKED WITH ENGINE RUNNING AT IDLE. NO LEAKS. REF MM 36-11-06, JRH.