Farmall 460 Overheating - where do I start?

Was bailing hay and my Farmall 460D overheated and antifreeze came out of the radiator cap. Temp went to over 200. Started it this evening and just drove it around the field and when I stopped, again, antifreeze came out the radiator cap. So where do I start and how do I find the problem. It has never done this in the 15 years I have had it. New radiator cap? Thermostat? What do you all recommend? I have more hay to mow and bale, so I need to fix it quick. Thoughts? Thanks in advance. I know you pros’ have the answer.
 
Could be the thermostat is stuck. I had it happen on my 300U before. I'd take the cap off when its cold and start the tractor - should be able to see water coming back into the radiator if the thermostat is OK.Look for bubbles too - if head gasket is bad it could be leaking into the cooling system. After that are the fins clean on your radiator and the fan belt tight. Some free stuff to try before spending money.
 
Had that happen on my 364. The radiator fins were full of hay chaff. Blew it out with the air hose and no more problems.
 
Park it near a water hose outlet. Remove the grill & all sheet metal that you can around the radiator. Turn on the hose without a nozzle, just your thumb to direct the water through the radiator fins from the fan side. Be careful not to bend the horizontal fins with too much pressure. You'll be surprised how much dirt you'll get out & how much cooler it'll run. Trust me, if you're doing it correctly, you will get wet.
 
So I know the be.t is tight, as I just put a new one on a little bit ago. I will have to check the radiator to see if it is clogged, how does that combustion kit work? Can you explain it please?
 
Coolant is composed of a modified plastic (Ethylene glycol, or other similar chemistry. The kit checks for the presence of free hydrocarbon combustion products. It is a chemistry set in a kit. Jim
 
I'll 2nd for washing the radiator out. Also could be cap or thermostat. Not sure how much water should move when it first starts. Let it run for a few minutes with the cap off. Once it warms up enough for thermostat to open you should definitely see water circulating from the top hose in the radiator.
 
the first simple thing i would do is fill it right full then start the engine and see is you have bubbles coming to the top. if so you need a head gasket. as that is quite common on these engines. sure sounds like it if you just started it and drove it with out load and it was overflowing.
 
(quoted from post at 15:40:48 07/14/20) Was bailing hay and my Farmall 460D overheated and antifreeze came out of the radiator cap. Temp went to over 200. Started it this evening and just drove it around the field and when I stopped, again, antifreeze came out the radiator cap. So where do I start and how do I find the problem. It has never done this in the 15 years I have had it. New radiator cap? Thermostat? What do you all recommend? I have more hay to mow and bale, so I need to fix it quick. Thoughts? Thanks in advance. I know you pros have the answer.

All the above could be correct? I did not research the "kit" yet so that might be a good answer too? Recently my skid steers little Ford 4 cyl was overheating. It got quite hot one day and I had had enough of that and didn't want to wreck my old skid steer which is paid for. So first I blew out the radiator and it needed it was a good first thing to try. In my case it didn't help. Put a thermostat in it and done. No more problems. When I overhauled one of my 460s I just put a new one in, the point is they are cheap and easy to change out on my skid steer and 460. So my 2 cents is do the radiator clean out first, it is almost free to do so. If that isn't it, do the thermostat. My skid steer was the first repair work I did after breaking my back and it was easy enough I could do it with minimal pain. The 460 gas is almost as easy and would imagine the 460D is close to as easy? Start with the easy stuff first. Regards, John.
 
i also will say a plugged rad will not make it overflow, only the temp. guage will show hot. if its overflowing you got more than a plugged rad . head gasket time.
 
Blowing/washing out the radiator would be my first step. Our loader was getting up to the warm side moving hay. I washed the radiator out. Now it is cool. Will need to look at blowing it out more when we get wheat cut and more time. It did run cooler afterwards though. I doubt it is all the other problems as of now. Might be the head gasket or other things now since it has been hot. Our 674 did that when I was disking with it a year or so ago also. Washed the radiator out and all has been fine since too.
 
Today’s update. I spent 2 hours blowing the radiator out with an air hose. It didn’t look bad, however, it had a lot of dirt and stuff caked in it. The good news is, so far so good. The temp has not gone above 180ish. I drove it around the field for 30 minutes. I do think I should put in a new thermostat. Seems there are three options, so I have to take it apart first to see which one it needs. Thanks for the advice for you all. Greatly appreciate it.
 
how are you coming up with these temperatures? temp gun or is it that type of heat guage? ihc dont have temperature guage, under normal conditions the needle sits on the U in RUN on the guage. which is about straight up. you could put in a 180 or 195 .did you check for bubbles in rad?
 
My D17 was getting hot - real freaking hot - as in off the gauge past the red range. I don't know it didn't blow the head gasket. I pulled the thermostat and hosed out the radiator. I then filled the radiator with a couple gallons of white vinegar and ran it on brush hog for a couple hours. When I drained the radiator and flushed with distilled water the inside was as bright and clean as a new penny. Put a new thermostat in it and it hasn't gotten out of the green on the gauge since.
 
My temperature gauge is aftermarket and has numbers - degrees on it. I did watch for bubbles and never saw any at all.
 
When I brush hog in the fall, I have to stop every couple of hours and blow the golden rod leaves out of the grille screen and the front of the radiator. Otherwise my 2424 will get real hot.

Tim
 
I am sure she got hot pulling that baler. I had raked with it earlier and had no problems. I am going to drop the loader off it. It is a model #52. Any good ideas on how to get if off without issues. There are 4 big pins I need to pull out. Two on the bottom should be easy as they hold the cylinders. The big issue I see is the top pins and how to hold that loader up so I can back out. I have never taken it off before. Maybe hold it up with 2x4’s ?
E
 

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