What was found
ON SELECTING FLAPS 25 AT ABOUT 155 KIAS, T/E LIGHT ILLUMINATED & EICAS DISPLAYED MESSAGE TE FLAP DISAGREE. RAN QRH FOR T/E FLAP DISAGREE & LANDED 20 FLAPS USING ALTER SYS IAW QRH. EMERGENCY DECLARED. PERFORMED GVI OF RH IB XMSSN DRAINED & REFILLED FLUID IAW AMM 12-21-09-3. SMALL AMOUNT OF WATER COMING FROM RT INBD ROLLER BEARING. LUBRICATED. RAN ENGS IAW JRH FOR FLAP CHK. NOTED FLAP HANDLE MOVING BTWN 15/20 20/25, BYPASS NOISE IN THESE POSITIONS. FOUND FLAP CONTROL VALVE INPUT ROD VIBRATION DURING MOVEMENT FROM 15/20 20/25. RT INBD FLAP TRIP INDICATOR CHECKED GOOD AFTER CYCLE. R & R T/E FLAP CONTROL VALVE IAW AMM 27-51-28-2. RAN ENGS. OPS & LEAK CHKD GOOD. ACFT OK FOR SERVICE.