Brake fluid leaking from LR hose/caliper.

If the hose fitting is rusted up, I would go aheead and replace it. The fitting will only get worse down the line and end up leaking. If your going to replace the caliper, do both rears, not just the one side. Always good to do them in sets so braking performance is equal on both sides. If you never done rear calipers before, expect a little difficulty the first time. The only part I had real problems with was getting the e-brake cable off the caliper. The caliper has a preloaded spring that must be removed before the cable can be. FYI, the spring acts as a torque multiplier to compress the piston easily, and also returns the caliper piston to normal state when the e-brake is released. Removing, actually you just need to compress it enough to slip the cable end off. You'll see ... and btw BE CAREFUL . I was using a large pair of vice grips to hold the spring while I grappled with the cable end. Long story short.. spring was not on vice grips too well and slipped off. Guess what? Spring comes whizzing by my face like a bullet and lands halfway across the yard. Just a little heads up for you ....other then that.. its cake.