[echrisconnor]

I don't have an air hammer and would prefer to save the lines. The one which is paining me right now is up front. It goes from the hard line to the soft line which goes to the front oil cooler. I can't get the soft line off. I've used moderate heat, but fear that any more heat will burn up the union between the soft line and the fitting. Then I'm just replacing cheaper line, but would rather reuse it.

I'll try the tightening first. More penetrating oil, and maybe a friend to help with more torque.