What was found
(CAN) ON CLIMB OUT, GEAR WAS CYCLED UP. GEAR RETRACTED, DOORS CLOSED, RED INTRANSIT LIGHT WENT OUT.NOSE GEAR THEN EXTENDED INTO AIRSTREAM. GEAR WAS CYCLED DOWN WITH 3 GREEN INDICATION.UPON INVESTIGATION NOSE GEAR UPLOCK ROD HAD STIFFENED AND DID NOT SLIDE FREELY. THIS ALLOWED THE UPLOCK TO HANG UP AND NOT HOOK GEAR.ROD WAS CLEANED & LUBED.