What was found
AFTER TAKEOFF THE LEFT MAIN GEAR WAS A GOOD BIT SLOWER TO SHOW UP AND LOCKED AFTER THE GEAR WAS RETRACTED. WHILE THE NOSE GEAR AND RIGHT MAIN SHOWED UP AND LOCKED WITH LIGHTS OUT, THE LEFT MAIN HAD A AMBER DOOR LIGHT AND RED UNLOCK LIGHT ILLUMINATED. THERE WAS ALSO A ECAM WARNING ON THE LEFT ECAM SAYING LEFT MAIN NOT UP AND LOCKED. AFTER ABOUT 5 TO 7 SECONDS THE LIGHTS ON THE FORWARD INDICATOR PANEL WENT OUT AND THE ECAM WARNING WENT AWAY. REMOVED AND REPLACED LEFT AND RIGHT MAIN GEAR SEQUENCE VALVES IN REFERENCE TO A310 M/M 32-31-37-4 OPS CHECKS GOOD IN REFERENCE TO A310 M/M 32-31-00-5.