What was found
LANDING GEAR WAS SLOW TO RETRACT DURING CLIMBOUT FROM MEM VIBRATION WAS ALSO EXPERIENCED. RECYCLED GEAR AND ALL ACTIONS WERE EXTREMELY SLOW. FLIGHT CONTINUED TO DESTINATION DCA AND LANDED WITHOUT INCIDENT. CHECKED RIGGING AT LANDING GEAR CONTROL VALVE. FREED CABLE AT BYPASS VALVE AND GREASED BOTH MAIN AND NOSE GEARS. OPERATIONAL CHECK OK ON GEAR SWING. AIRCRAFT RETURNED TO SERVICE.