What was found
GEAR DISAGREE WARNING ON GEAR EXTENSION ACCOMPANIED BY HYDRAULIC 3 CAUTION. HYD 3 SHOWED 0% QUANTITY AND FLUCTUATING PSI BETWEEN 0-500PSI. (FLIGHT 5111 - FILED CLOSED) FOUND LEAK COMING FROM HYDRAULIC PUMP 3B, BETWEEN THE BALL ATTENUATOR ASSEMBLY AND HYD PUMP HOUSING ORING. REMOVED AND REPLACED ORING AND RETAINER ON HYD 3B PUMP IAW AMM 29-12-03. NO LEAKS NOTED. PUMP OPS CHECKS GOOD. BLEED HYD SYSTEM 3 IAW AMM 29-10-00. PERFORMED SERVICE OF HYD 3 SYSTEM IAW AMM 12-12-29. PERFORMED OPS CHECK OF GEAR EXTENTION AND RETRACTION IAW AMM 32-30-00. OPS CHECK GOOD.