Falling rock, sorry for the mishap, but if I understand it correctly, it would be your job to observe the gauges and/or lights. Did you stop the tractor immediately? You had to have had some warning the engine was either overheating or that water was flying everywhere. Murph, it's spelled out right on all the paper work you get with your tractor. Kubota has a 1 year warranty on everything and a 2 year on the power train. No matter what someone here says, it doesn't change that fact. I doubt any manufactuer would warranty an issue like this. A little "twig" may have knocked off the hose, but it is your responsibility to stop the tractor immediately when a gauge, idiot light etc., indicates a problem. I find it hard to belive that when a hose completely comes loose, you would not notice it right away. It could just as easily been a hole in the hose, a broken belt not turning the water pump, a "twig" through the radiator, a broken hydraulic filter or line, engine oil pressure loss etc., all of which have methods to warn you that a problem exists or is about too. I say it is the responsibility of the owner/driver to verify the oil pressure, water temp, etc of his or her tractor. I should think your only recourse is to prove that a gauge or light failed to notify you that an overheating condition was impending, you might possibly have a case then. Now I'm curious to look at a MX5000 and see just what kind of setup they have and what it would take to remove the hose from the radiator. Maybe your clamp was loose to begin with.
Heres our warranty issue just to show it comes in all colors: Our NH 2120 that lost a shuttle clutch pack becasue a little bolt could not handle the load or was weak to begin with, ended up costing us only $3500 instead of the $5000 quoted, talk about the need for a exteneded warranty, it only has 400 hours on it. It's the second mishap with this NH 2120, a tractor that is costing far more to operate then it ever should have. The bolts loosening at the engine/transmission still are not covered under any warranty or recall but are obviously a major design flaw in this tractor. NH will not do anything to resolve it other then repair it at a cost. The bolts loosened right from the get go but is not something obviously noticeable until it was to late and we lost the seal between the two halves. Now we just check the oil, bring out the various open end wrenches and swivel sockets and check all the frigen bolts when we use the tractor. We need a light on the tractor to warn us the bolts are loose and the tractor is about to become two separate units.