What was found
AIRCRAFT WAS GROUNDED: ON TAKEOFF AT 1500 THE ECAM ENG2 BEARING 4 OIL SYS (PRESS HI) CAME ON FOR ABOUT TWO MINUTES, THEN WENT OUT. THE AIRCRAFT RETURNED TO DFW, WHERE IT LANDED SAFELY WITHOUT FURTHER INCIDENT. NO EMERGENCY WAS DECLARED. REPLACED NR 2 ENGINE, NR 4 BEARING COMPARTMENT SCAVENGE VALVE, AND ACCOMPLISHED A SATISFACTORY LEAK/OPERATIONAL CHECK PER AMM 79-23-51.