52pu, This truck is a 1949 6400. Just running downt the road its right on. If you put a load on it like for example I hauled 3.5 cord of cedars on it, when I would go up a hill the guage would start going up instantly, headed back down and it would start to go back down. In the summer I use it for hauling square bales where you are just putting around the field after awhile it overheats. The temp outside makes a difference on the overheating. This seems to me to be more of a radiator problem. Anymore help would be appreciated. As you can tell I really do not want to mess with the fan.
