Re: Re: tractor overheating

Posted by Deas Plant. on July 20, 2003 at 12:32:43 from (210.50.60.9):

In Reply to: Re: tractor overheating posted by wdTom on July 19, 2003 at 18:32:48:

Hi, All.
I certainly would NOT be following wdTom's advice if it were my tractor or vehicle.

Firstly, there are very few unpressurised cooling systems left running these days and taking the cap off of a pressurised system while it is hot is a recipe for extensive skin grafts unless you are very careful. On top of this, removing the cap and/or releasing the pressure causes an immediate drop in the boiling point because the more pressure you have within the system the higher the boiling temperature.

Likewise running the tractor without the cap so that you can stick a thermometer in the top of the radiator is going to give an unrealistic result on anything but a totally unpressurised system.

Secondly, 200 deg. F. would be O.K. but since the boiling point of unpressurised water at sea level is 212 deg. F., running to 220 deg. is highly likely to result in a massive outflow not only of water from your cooling system but also of dollars from your bank account.

Incidentally, as I understand it, the higher the altitude at which you are working, the lower the boiling point, unless you have a pressurised cooling system.

BTW ewk, one other thing to check would be that your tractor's thermostat is working. You can do this by dropping the thermostat into a pot of boiling water and watching for several minutes to see if opens as it heats up.

Hope you find a solution.

You have a wonderful day. Best wishes. Deas Plant.

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