What was found
FLT#765, JFK-GCM. AIRCRAFT DECLARED AN EMERGENCY AND DIVERTED TO FLL, HYD Y ENG 2 PUMP LOW PRESSURE PUMP SWITCHED OFF PRIOR TO RSV DEPLETION. FOUND O-RING DAMAGED AT UNION FITTING OF YELLOW HYD MANIFOLD. REMOVED AND REPLACED TEE FITTING AND UNION IAW 29-13-14, OPS CHECK AND LEAK CHECKS ARE GOOD. A/C OK FOR SERVICE.