How to Break an Aileron Bearing Home › Forums › Maintenance of Grummans › Control Surfaces › How to Break an Aileron Bearing Tagged: 902013-1, Aileron Bearing, Control Surface Bearing This topic has 0 replies, 1 voice, and was last updated 8 years, 1 month ago by Roscoe Rosché. Viewing 0 reply threads Author Posts March 15, 2016 at 22:23 #4038 Roscoe RoschéKeymaster It is called out in the Maintenance Manual to be sure and warm the control surface bearings (902013 series) and here is why you should! Roscoe 513-519-7008 Yankee-Aviation.com Author Posts Viewing 0 reply threads You must be logged in to reply to this topic. Log In Username: Password: Keep me signed in Log In