Since replacing the radiator cap, my 7610 will run hot, especially when bush hogging. The old cap came off in 4 pieces, hence the new cap. In looking at replacing the new cap, I'm finding a 7psi, which is what I have, and a 13psi cap. I don't know which psi the original cap was. The question is, if I change to 13psi, will the higher psi hurt anything if it's supposed to be the 7psi? In case it's not the new cap making it get hot, I've changed the thermostat and flushed the radiator.
Turbys_1700
Elite Member
Have you tried the 7 psi cap out? Just for precaution is your radiator clean. What are you doing with the tractor? I assume bush hogging.
I'm currently using the 7psi cap. If I use the 13psi, will the higher psi hurt anything? I'm assuming it makes the pressure higher. I've flushed the radiator and it's not blocked by debris on the outside. I can bush hog for about 1/2 hour before the temperature gauge needle is at the red line.
Turbys_1700
Elite Member
I don't see why a 13 psi cap would harm anything. Has this just started happening or is it reoccurring? What size hog are you using and how many hours on the tractor? Any blow-by? Just trying to get more info. I had a 4610 and it was a good tractor. I like the 10 series Fords.
CincyFlyer
Veteran Member
When you say "run hot", do you mean in the red at the top of the temperature gauge? If below the red, it's OK. Is it boiling out coolant? Is the system properly bled (some require extra steps, or you get big air bubles ... and overheating!) You may want to get an actual temperature reading, to make sure that your temp sensor isn't wonky, as well.
Turbys_1700
Elite Member
Look at the underside of your tractor for a tube that will disperse any blow by exhaust. Most older tractors will have some which is normal and indicates some engine wear. A little is OK. An excessive amount indicated worn rings.
If I was in your shoes I would try the 13 psi cap. If it runs hot you may need to get your radiator rodded out by a radiator shop. If that doesn't fix it check for water in your oil indicating a blown head gasket. If the radiator is OK and it still runs hot I have no clue unless you have upgraded bush hogs or it was just an extremely hotter than normal day.
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