It looks like there is a hose clamp, and a compression clamp on there. If you remove the screw clamp, and cut the compression clamp, the hose should slide right off. If there is a bit of a flare, or the tubing is just larger in some fashion toward the end, just clamping the new hose on should be fine. It's a return line, so, you wouldn't think it was under a whole lotta pressure.....

 

Thanks. I put the screw clamp on to see if it would stop the leak and it appears to have virtually stopped it. I'm going to watch it for a while to see if that holds or not. If not, I guess I'll try what you said and just get a piece of hose cut. Can't figure out why that nut would not come out - but oh well. lol.

 

If you decide to cut the tubing, put some grease around the cut to catch the shavings.

 

Will remember that one. Thanks

 

If you are going to disconnect the hose vice remove, heyyou's suggestion to remove the clamps and pull the hose off is the way to go.
I recommend that you clean the entire area with engine cleaner, then dry it off and wipe it down. A clean area will help you isolate the leak and determine if your fix is leak-proof.