What was found
THE NOSE GEAR FAILED TO EXTEND ON FIRST ATTEMPTON APPROACH TO CLE. A MANUAL GEAR EXTENSION WAS PERFORMED AND THE NOSE GEAR DEPLOYED. THE AIRCRAFT LANDED WITHOUT INCIDENT. MAINTENANCE PERFORMED BITE ON PSEU WITH NO FAULTS FOUND. MAINTENANCE REMOVED AND REPLACED THE CHECK VALVE IAW BOEING SERVICE LETTER M-7200-00-00442 (DATED 08 FEB 00) PERTAINING TO THE HYDRAULIC RATE FUSE. LEAK AND OPERATIONAL CHECKS WERE GOOD.