What was found
RIGHT AFTER TAKEOFF, RT ENG VIBRATION, N1 WENT TO 1.9. WE READ THE CHECKLIST AOM VOL 1 & INITIALLY WE WERE ABLE TO CONTROL THE VIBRATION TO 1.7, GREEN, BUT AS WE CLIMBED TO FL270 VIBRATION GOT WORSE UP TO 2.1, AMBER, & WE WERE NOT ABLE TO CONTROL IT WITH POWER REDUCTION, AT THAT POINT AN EMER WAS DECLARED. THE REST OF THE ENG INDICATIONS WERE NORMAL. INSPECTED FAN BLADES FOR STIFFNESS. NO STIFFNESS NOTED IAW AMM 72-21-02. VIB CHECK GOOD IAW AMM 71-00-00. IAW AMM 72-21-02 LUBRICATED THE ENG FAN BLADE RETAINING PINS REF LOG PAGE 50259 ITEM 2.