What was found
DURING TAKEOFF, FLIGHT CREW WAS UNABLE TO RAISE GEAR HANDLE. FLIGHT CREW ACCOMPLISHED CHAPTER 3 PORCEDURE IN COCKPIT OPERATING MANUAL AND RAISED GEAR. GROUND CONTROL RELAY CIRCUIT BREAKER RELAYS WERE OPEN FOR FLIGHT AND RESET AFTER LANDING. AC LANDED UNEVENTFUL. MAINTENANCE REMOVED NOSE STRUT, FOUND TRASH IN FLUID RETURN REBOUND CHECK VALVE, FLUSHED OUT TRASH, REPACKED, AND REINSTALLED CHECK VALVE. OPS CHECK GOOD IAW MM 32-21-2. AC WAS RETURNED TO SERVICE. (K)