What was found
DURING CLIMBOUT FROM LAX, RECEIVED HYD Y ENG PUMP LOW PR MESSAGE. PLACED THE NR 2 ENGINE DRIVEN YELLOW HYDRAULIC PUMP OFF AND THE YELLOW SYSTEM ELECTRIC PUMP ON PER COM PROCEDURES. LATER DURING CRUISE, RECEIVED HYD Y RSVR LOW LVL MESSAGE AND PLACED THE YELLOW SYSTEM ELECTRIC PUMP OFF PER COM PROCEDURES. FLIGHT CONTINUED TO MSP AND LANDED WITHOUT INCIDENT. MAINTENANCE REPLACED THE NR 2 ENGINE DRIVEN HYDRAULIC PUMP, FILTERS AND FLUSHED SYSTEM AND OPERATIONAL CHECK OK.