Case 870 Thermostat Location???

[newbee83]

I started up my tractor the other day and it started to overheat, I checked the upper radiator hose it was very hot checked the lower ice cold along with the radiator.I am thinking it is the thermostat.I just bought this tractor last year so I am still new to working on it, does anyone know where the thermostat is located? or if it would be something different? Thanks for all the help