gvgoff99
Well Known Member
On the TruTrak servos the motor is held to the servo gear housing by four small Allen screws. I have heard from a good source that these Allen screws have been known to loosen causing another potential failure of the servo. A premium builder in the Houston area, Doug Knab, came up with this fix and also added the AN3H-3A safety wired bolts to hold the servo on the mounting bracket. The safety wired screws to hold the gear housing to the servo motor are AN502-10-6 fillister head screws. If you do this "fix" make sure that the screw and bolt do not bottom out on each other (putting a washer on each should prevent them from touching (they both go into the same threaded hole in the servo but from opposite sides as you probably figured out).