Sevo mechanical wear tolerance

[Bo_Hannington]

Hi, today I started the annual on my RV6A.
I installed an autopilot in 2010, and have been enjoying it ever since.
During the inspection today, I noticed some lateral slack on the roll servo output shaft. I didn't have a vernier with me to measure it, but I'm guessing there was about a 0.3mm, say 0.010" (ten thous) sideways movement in the servo output shaft. There was no where near as much on the pitch servo.
I don't have a record of checking it last year, but today it was obvious as I moved the controls.
Is this amount of slack acceptable, or should I get it fixed?
What kind of bearings support the output shaft? Is it just a bushing or are there some rollers?

 

[davedubb]

Movement of the shaft perpendicular to the servo body is expected. Some servo's have more than others. If the control surface attached to the servo has significant movement when the servo is engaged we would then need to take steps to fix the issue. You can engage or "freeze" the servo by performing a calibration test, engaging the autopilot while on the ground will not work.