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8N running Hot. What could be the problem?

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Rick

04-23-2003 17:15:21




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I mowed my yard today with my '50 8N. Use a 6ft. finishing mower and it takes about an hour to mow my 3 acres. When I finished mowing I noticed that it had steam coming out of the radiator cap. I took the cap off and the 8N has plenty of coolant in it. Touched the hoses and they were to hot to touch. What do you guys think the problem is? Radiator need to be flushed? Or could it be something else. And advice would be helpful.
Thanks.

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Dave OH

04-25-2003 00:02:48




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 Re: 8N running Hot. What could be the problem? in reply to Rick, 04-23-2003 17:15:21  
Could be that you do not have a pressure cap with a good gasket. If I remember right, and that is not a sure thing, it was about a 4# pressure cap. If I am wrong someone will correct me. As for over heating the "N" series had an overkill cooling system. But the radiator and block can become plugged after 50 yrs. If you are going to remove the thermostat anyway remove both hoses and flush both the block and the radiator. You will be suprised what comes out of some of the old blocks.
Dave OH

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bg

04-24-2003 08:52:12




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 Re: 8N running Hot. What could be the problem? in reply to Rick, 04-23-2003 17:15:21  
If the termostat is properly installed and functioning, and the water pump is working and the radiator isn't clogged up(flow-test it), and the block isn't gunked-up, on other thing that can make it run hot is timing being off, usually too far retarded.



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ZANE

04-24-2003 05:08:56




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 Re: 8N running Hot. What could be the problem? in reply to Rick, 04-23-2003 17:15:21  
If there is plenty of coolant still in the radiator it is not running hot enough to do any harm to the engine. It has to be in excess of 212 degrees to start loosing much coolant and that is sure too hot to touch.

The first tractors used the principal of evaporation to cool engines. When water evaporates it releases heat in the form of steam or vapor. The more you worked the engines with evaporater systems the more it steamed. This was not bad. I have a B John Deere and it has a reservoir in top of the radiator that will hold five gallons of water. It was designed with the evaporater idea still alive and well.

An engine can't be harmed from heat as long as it has plenty of coolant in it and it is moving around displacing heat.

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a in ala

04-23-2003 18:36:08




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 Re: 8N running Hot. What could be the problem? in reply to Rick, 04-23-2003 17:15:21  
Rick, chech the tension of your belt. It took me quite awhile but I finialy solved my problem
when I changed to 12 volt and replaced and
re-tensioned the belt.

HTH Avery



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Ultradog

04-23-2003 21:56:27




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 Re: Re: 8N running Hot. What could be the problem? in reply to a in ala, 04-23-2003 18:36:08  
Good advice Avery.
Sometimes it's just the simplest things...
He might also try testing the thermostat.
Either take it out and run the tractor without it to see if it still overheats or or take it out and test it in a pan of hot water. It should fully open well before the water boils.



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