What was found
GEAR DISAGREE MESSAGE ON ROTATION (PUTTING GEAR UP).NOSE GEAR WAS DOWN AND MAIN WHEELS WERE UP. RAN QRH AND GOT GEAR TO COME DOWN. RETURNED TO FIELD FOR A SAFE LANDING. (FLT#5351) FO: 03/06/2019 CLOSED REMOVED NLG SLIDER MEMBER AND NLG FLOATING PISTON FROM THE ONE PIECE AXLE ASSY. INSTALLED THE SLIDER MEMBER AND NLG FLOATING PISTON WITH NEW O-RINGS ON THE TWO PIECE AXLE ASSY IAW AMM.