Did I screw up

I am in process of repaining my tractor (later model 4000su) so today took the radiator off to gain access to the front of the engine. looked straight foward, remove 2 nuts from under the radiator where it bolts to the bracket. well..... the nut on the left side started turning along with the stud that looks like it is internal of the radiator. So my question is what next? Do I need a new radiator? Ended up removing the radiator with the bracket, don't need to take it apart any further but concerned it will start leaking when back together. HELP!

BigWill

Thanks for the reply. I don't need to dissemble the radiator/bracket any further so I have no need at this time to cut the bolt off unless there is something I am missing. Or are you saying cut it off because it will leak if you don't replace it along with new seals.

Thanks,

BigWill

--->Paul

Looks like the problem is solved or at least figured out for the moment, as Larry said it is a carriage bolt so this is what I have done so far; Put vise grips on the bolt threads and re-tightened the nut, figured what the hey nothing tried nothing gained. Then since the radiator is off laid it on it's left side and put as much water in it as I could for a leak check. Looks good to go. However on these type of deals seams like they come back to bite me in the heineken, besides that I see the rubber gaskets that goes between the radiator and bracket are weather checked anyway so I will change them while it's so easy to get to. Now the issue with the bolt, looks as though I will have to cut it off fish the head out of the lower radiator hose port then fish the new one back in.

Let the fun begin, after of course I have secured the replacement parts from New Holland.

BigWill