I run a few Allis tractors , the only time they run too cold is in the winter. Temp around 20-30 or colder. I have to cover the rad screen, to get them warmed up. Most of the temp gauges on my are not too easy to read at 8'. So I go by the center, they are all set to read normal hot at the center( 185-200). I have found if it is 85 or hotter in the hay field they can get hot but takes about an hour of baling ( thats the baler wagon etc. hilly ground, a lot of work for 35HP). So I have to make sure the Rads are cleaned often. I looked at a picture of one on e-bay. I would say 50% of the time my run at around 130-150 , 15% below ( winter) 35% above. Baling and brush hogging is about the only time they get too warm.
Make sure the rads are near full. To Test temp gauge .
Cover rad when hotter out , WATCH CAREFULLY see if temp goes up should be about 15-20 min if about 90 outside too get hot , water also runs down the rads if too warm , and would cool it some to. If I see water coming out of the top I watch to make sure she is running at and ok temp.