What was found
AFTER TAKEOFF HYD 2 FAILURE. LOSS OF ALL FLUID. RCM CHECKLIST AND RETURNED FOR LANDING. CHECKED THE HYD LEAK FROM #2 ENG R HYD PUMP. REMOVED AND REPLACED THE 2R EDP PER AMM 29-11-20-4-1. LEAK CHECKED NORMAL .BUT THE L AND R PUMP ALWAY DISPLAY LOW HYD PRESSURE DURING #2 ENGINE RAN. REMOVED AND REPLACED THE RELAY R2-5258.NO HELP.REMOVED AND REPLACED THE L&R LOW PRESSURE SWITCHS AS PER AMM 29-12-34-2-1. ALL INDICATION NORMAL.RAN #2 ENGINE PER MD11 JRH ,TEST NORMAL PER AMM 29-11-20-5. A/C OK FOR SERVICE