MonacoMama, Thanks for the suggestion. What I really need is the torque value for those flare nuts. We had already put 3000 miles on the coach this year prior to discovery.
The real question is: Why did they loosen up in the first place? I have never seen this in any of the diesel rigs that have been mine!
I bought a set of Crowsfoot flare nuts from Harbor Frieght in Yuma several days ago. Checked for leakage after parking at SKP Jojoba hills RV park and everything was dry.
Iron Mike, Fairbanks, AK 30 Years, 38' Alpine FDDS