My flap motor was shipped in '00. Based upon all of the comments here, I fully disassembled the gear section of the unit and cleaned it. I left only what I felt was an appropriate amount of grease (far less than the guy/gal at the factory felt was appropriate). 400 hours without a problem.
When you cleaned the motor, did it have signs of grease? If so, take apart the gear section and remove all of the excess as well as degreasing the entire motor and it's housing.
RV-6A / IO-320, Flying as of 8/2015
Last edited by lr172 : 09-06-2017 at 10:59 PM.