What was found
50 MIN INTO FLT, GOT A LEVEL 1 HYD-2L OFF ALERT. COMPLIED W/QRH. HYD-2R IN GREEN, QTY 8.3. A FEW MINUTES LATER LEVEL 1 HYD-2R OFF ALERT. COMPLIED W/QRH. QUANTITY CONTINUED TO DECREASE AND CONFERRED WITH MX AND GOCC. OVER COURSE OF NEXT HOUR QUANTITY DECREASED TO 4.5. MX ADVISED TO RUN QRH FOR HYD-2 QTY LO, COMPLIED W/QRH, QUANTITY DECREASED TO 0.2 GAL W/NR 2 PUMPS OFF AND 2-3 RMP OFF. RESERVOIR TEMP AT 2 DEGREES C. PRIOR TO RUNNING QRH, NR 2 PRESSURE PERIODICALLY WENT FROM 60 PSI TO 700 PSI. REMOVED AND REPLACED NUMBER 2 ENGINE UPPER HYD PUMP ONLY, AS PER MD-11 M/M REF: 29-11-20-4-1. HYDRAULIC SYSTEM NR 2 OPERATIONS CHECK NORMAL.