What was found
ON CLIMBOUT, FL260 AT 310 KTS, GEAR HANDLE TO OFF CAUSED GEAR DOORS LIGHT TO ILLUMINATE. SLOWED, ACFT YAWD RT & SLIGHT VIBRATION. SLOWED TO 270KTS. RETRYED GEAR HANDLE TO UP, YAW & VIBRATION STOPPED GEAR LIGHT OUT. ONCE SPEED WAS 270, PLACED GEAR LEVER TO OFF, ALL INDICATION NORMAL. RETURNED TO NORMAL SPEED. ALL NORMAL. TROUBLESHOT PER FIM 32-30 -00. FOUND LEFT TILT ACTUATOR LEAKING OUT OF THE RETURN PORT REF BOX 21 PG 130 OF FIM. REPLACED ACTUATOR REF MM 32-32-15. CYCLED GEAR SEVERAL TIMES REF MM 32-32-00 AND ALTERNATE SYSTEM REF 32-35-00. OPS CHECKED NORMAL.