What was found
DURING CLIMB OUT, THE NR 2 ENGINE LOW PRESSURE LIGHT ILLUMINATED. HYDRAULIC B SYSTEM INDICATED 106%, 2870. FOLLOWED QRH PROCEDURES THEN NOTICED LOW PRESSURE LIGHT ILLUMINATED B SYSTEM. NR 2 ENGINE QTY & PRESSURE BOTH INDICATED ZERO. THE FLIGHT DECLARED AN EMERGENCY AND RETURNED TO DEPARTURE, USING FLAPS 15, WITHOUT FURTHER INCIDENT. R & R THE RT ENGINE EDP IAW AMM 29-11-51. R & R ELEVATOR FEEL COMPUTER, DUE TO HYDRAULIC CONTAMINATION IAW MCM 27-94-13. ALL REQUIRED TEST ACCOMPLISHED. ALSO HYDRAULIC FLUSHING ACCOMPLISHED IAW MCM 29-93-01. THE AIRCRAFT WAS GROUNDED.