Originally Posted by Taltruda
Yeah but on a plane thatís already together, that wonít work. I took a box end wrench and cut it open so itís like a flare tube wrench, then heated and bent it into a S shape. I still had to grind it thinner to fit. I wanted more strength than an open end wrench, and could have just used a flare nut wrench but didnít want to sacrifice one for it.
I did this with a large offset box wrench. Just use the cutting wheel to slice into the box section. Plenty strong enough to torque the jam nut tight enough.