What was found
IN CRUISE FLIGHT AT 10K, $2 HYD PSI SPIKED TO 3,800 PSI FOLLOWED BY LOSS OF #2 HYD QUNTY AND SYSTEM PSI DROPPED TO ZERRO. ELECTRIC DRIVEN PUMP TURNED OFF AFTER 5 TO 10 MINUTES. (EICAS MESSAGE OF HYD SYS 2 FAIL). REMOVED AND REPLACED #2 HYD ENG DRIVEN PUMP IAW AMM 29-10-03. OPS CHECK GOOD. LEAK CHECK GOOD. OK FOR SERVICE AT THIS TIME.