What was found
ECAM CAUTION MESSAGE - Y RSVR LO LVL MESSAGE INOP - HYD. SAMC TEXT: CONTACT SAMC, VERIFY HYD QTY AND EXTERNAL LEAKS. CREW SHUT OFF PUMP TO PREVENT CAVITATION. FOUND OVER 1 GAL OF FLUID IN RESERVOIR. CHECKED ENG 2 YELLOW PUMP CASE DRAIN FILTER PRECAUTIONARY REF AMM. FILTER CLEAN, NO METAL FOUND. FOUND O-RING DAMAGED ON CHECK VLV 3059GM ON HP MANIFOLD. REMOVED CHECK VLV AND REPLACED O-RING. SERVICED YELLOW HYD SYSTEM, PRESSURIZED SYSTEM AND LEAK CHECK GOOD.