I am looking at a 2004 Massey 492 = 90hp MFWD...  it had radiator failure and they continued to run it and got and overheat. The engine starts but makes internal noise,  not a hiss like a head gasket.  Also the left rear brake was locked and the dealer removed the linkage to move the tractor. Does this sound like a linkage problem rather than a wet brake locked up. This is a repo being offered at a low price.    Any ideas welcome.  Thanks, George M.