What was found
DURING CLIMBOUT, NR 3 ENGINE LT EDP INDICATED OVERTEMP. ONE HOUR AFTER DEPARTURE, NR 3 ENGINE RT EDP INDICATED OVERTEMP. ONE HOUR FIFTEEN MINUTES AFTER DEPARTURE NR 3 HYDRAULIC SYSTEM INDICATED 0 HYDRAULIC FLUID QUANTITY. DIVERTED TO LEJ (EDDP) FOR MAINTENANCE. GEAR EXTENDED BY ALTERNATE SYSTEM. REMOVED AND REPLACED ENGINE NR 3 ENGINE EDP'S AND CARBON FRONT FACE SEALS (LEFT AND RIGHT). CHANGED CASE DRAIN MODULE CHECK VALVES AND ALL FILTERS. LEAK CHECKED GOOD AND OPS CHECKED GOOD PER AMM 29-11-20-000/29-11-20-400-803/29-11-20-210-002. NO DEFECTS NOTED.