970 Over heating .. help asap

I have a case 970 .. bought the tractor last summer .. I put on a new rad,water pump,fushed the system, did not put the 2 thermostats back in, i ran the tractor all summer & she ran just great.. now its winter i would like some heat in the cab.. so bought 2 new stats from case & put them in .. all it will do now is boil over... before i remove thermostats to test them , does ant body have any more things to try .thanks
 
dont know if its possible but could the thermostats be in backwards? check radiator cap to see that it is rated for the correct pressure and holds it properly.
 
i'm not too familiar with 70 series tractors,( mine are all older), but is it possiable to put the thermostats in upside down? that may be something to check.
 
Sometimes it helps to drill about an eighth of an inch hole in the thermostats to prevent air locks and overheating.
Bryce
 
Hi guys & thanks for getting back.... well i got the stats out & poped them in the pan & on the stove ... they opened.. so this is the deal, im sure i had them in up side down . i just cant even show my face in town again.. my last little job was rebuilding the powershift on our old 2470 you would think i could put 2 stats in.. well must have been a blond moment!!
 
One of my co-worker's had a new thermostat installed in his wife's car by a local auto shop and they installed it backwards and the engine overheated. It's a good way to crack a head. Hal
 

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