Proper torque for fuel drains Home › Forums › Maintenance of Grummans › Wings › Proper torque for fuel drains This topic has 2 replies, 2 voices, and was last updated 4 years ago by Eric Rine. Viewing 2 reply threads Author Posts May 3, 2020 at 11:22 #13739 Eric RineParticipant 1991 AG-5B. What is the proper torque for the wing fuel drains? Looked through the maint manual and couldnt find it called out! Thanks! May 3, 2020 at 16:05 #13740 Roscoe RoschéKeymaster You want just enough to compress the o-ring not crush it. Little Parker’s lube on the o-ring and a clean surface on the lower wing will help. No more than 15 foot pounds MAX. May 4, 2020 at 23:08 #13745 Eric RineParticipant Thanks!! Author Posts Viewing 2 reply threads You must be logged in to reply to this topic. Log In Username: Password: Keep me signed in Log In