Reviving a very old thread, and somewhat hi-jacking since I've got similar problems on my TC33D, except that it will now overheat even when idling. When I first got it, I could barely get the temperature gauge to go into the green unless I was really pushing it. Now it goes into the green after 5 minutes of use, and will go into the red after 15 minutes of use (and much of that is at 2800 RPM in 3rd going down the road).
If I spray water on the radiator while running, it cools down quickly.
The radiator was a little dirty, so I removed the screen and cleaned it out thoroughly. No plugged fins, and I can see through it just fine in most places. The hydraulic fluid radiator was a little dirtier. I took that off and thoroughly cleaned it, and also straightened some of the fins that were bent. Finally, I made sure that the fan belt was tight.
It still starts getting hot quickly. Reading back through, I noticed a section about air leaks. Could this be my problem?
I shot a video of the radiator fluid movement once the tractor got warm. There is definitely a lot of bubbles coming up through. Could someone please review this video and tell me if it is normal, or if I have a head gasket change out in my future?
The good news is that I'm not getting white exhaust, and the oil is not getting water in it.
[youtube_browser]jbhfwGbndQc[/youtube_browser]
First I have the tractor at about 2500 RPM, then I lower it down to an idle, and finally raise it back up to about 2300RPM