What was found
LOUD THUD UPON GEAR EXTENSION COMING FROM NOSE WHEEL AND IT TOOK A LONG TIME FOR THE NOSE GEAR TO EXTEND AND THEN IT TOOK AN EVEN LONGER TIME FOR THE MAIN GEAR TO EXTEND WITH A THUD SOUND THEN ALL 3 WERE EVENTUALLY GREEN. (ABNORMALLY LONG, AND NOT IN SEQUENCE). REMOVED NOSE GEAR ACTUATING CYL. INSTALLED NOSE GEAR ACTUATING CYL (1250) UPTO AND INCLUDING STEPS A300-600 AMM 32-31-22-04 (2.D.6). OPERATIONAL AND LEAK CHECK REQUIRED. COMPLETED INSTALL OF NOSE GEAR ACTUATING CYL (1250). OPERATIONAL AND LEAK CHECKS GOOD. PERFORMED GEAR NORMAL RETRACTION TEST. GEAR IS NOT ABNORMALLY LOUD AND ALL TESTS GOOD.