What was found
IN CRUISE, ON CENTER TANK TO ALL ENGINE FUEL FEED, FUEL MIGRATED INTO NR 2 MAIN TANK AT RATE OF 1800 LBS PER HR, ALL FOUR CROSS FEEDS OPEN, 1 AND 4 MAIN BOOST PUMPS OFF, 2 AND 3 CENTER WING PUMPS ON FOR TROUBLESHOOTING. TURNED OFF NR 2 MAIN FORWARD AND AFT PUMPS ONE AT A TIME. THE NR 2 MAIN FORWARD 'PRESS' LIGHT DOES NOT COME ON WITH THE PUMP SWITCH OFF. ALL OTHER INDICATIONS NORMAL. AIR TURN BACK TO JED. REMOVED AND REPLACED NR 2 FORWARD BOOST PUMP DISCHARGE PORT CHECK VALVE IAW MM 28-22-03. OPS CHECK AND LEAK CHECK OK. (M)