What was found
FLT 1012, JFK TO BOS, DECLARED EMERGENCY, YELLOW RSVR OVERHEAT INDICATION BOTH ON ECAM & OVERHEAD ON ENG & ELECTRIC PUMPS. T/S TSM 29-13-00-810-802. FOUND ELEC PUMP DELIVERY CHECK VALVE BAD. REMOVED AND REPLACED CHECK VALVE PER AMM 29-24-21-04. DID VISUAL INSP OF REMOVED CHECK VALVE PER TSM 29-13-00-810-802 4A ITEM 2, NO MISSING PARTS. FOUND VALVE TURNED SIDEWAYS. LEAK CHECK GOOD. NR 2 ENG EDP NEEDS REPLACEMENT PRECAUTIONARY DUE TO MULTIPLE SYSTEM OVERHEATING OF YELLOW SYSTEM. REPLACED NR 2 ENG EDP PRECAUTIONARY PER AMM 29-13-51-04, SYS OPS CHECK NORMAL.