What was found
WHEN GEAR WAS RAISED AFTER TAKEOFF, RECEIVED A GEAR DOOR LIGHT AND MESSAGE. MAX SPEED WAS 230, MODERATE TO SEVERE VIBRATION IN NOSE GEAR AREA. VIBRATION DECREASED AS THE ACFT SLOWED. AIR TURNBACK. FOUND THE RT NOSE GEAR DOOR ROD 2, STRUT ASSY WORN. REMOVED AND REPLACED THE STRUT ASSY IAW AMM 32-22 00, ADJUSTED IAW AMM 32-22-02-825-001. PERFORMED NOSE GEAR SWINGS IAW AMM 07-11-02-582-001, OPS CHECKED NORMAL, OK FOR SERVICE