What was found
DURING ASCENT FROM MIA 30 MINUTES INTO FLIGHT NR 2 'B' SYSTEM HYDRAULIC LOW PRESSURE LIGHT ILLUMINATED. PERFORMED ABNORMAL CHECKLIST, NO BREAKERS POPPED. AIRCRAFT RETURNED TO MIAMI. TROUBLESHOT HYDRAULIC SYSTEM. FOUND CURRENT DRAWS FROM RELAY ON PUMP NR 1 TO BE 16 AMPS NO LOAD, AND NR 2 PUMP 23 AMPS NO LOAD. WITH LOAD PUMP NR 1, 24 AMPS, PUMP NR 2, 34 AMPS. REMOVED AND REPLACED SYSTEM 'B' PUMP, NR 2 PUMP CIRCUIT BREAKER AND NR 2 PUMP RELAY. REMOVED AND REPLACED CASE DRAIN FILTERS TWO EACH. WORK PERFORMED IAW MM 29-00, 29-10-01, 29-12-11 AND 29-12-21. OPS CHECK AND LEAK NORMAL. AIRCRAFT RETURNED TO SERVICE. (M)