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Harry Ferguson Tractors Discussion Forum
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TEA20 Thermostat

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Dannyboy

01-21-2008 12:36:27




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I have a Ferguson TEA20 that is overheating after running 15 minutes. It was made in 1953. Is there a thermostat in the cooling system? If so where might I find it.
Thanks
Dan




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Dannyboy

01-22-2008 05:18:39




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 Re: TEA20 Thermostat in reply to Dannyboy, 01-21-2008 12:36:27  
I am in Ontario Canada, the outside temp is around -8C. The fins on the radiator were blown out and checked to be clear, the radiator was flushed out and checked for flow.
The tractor mechanic I had spoken with wasn't sure if there is a thermostat in the cooling system on the TEA20 or where it was located.

Thanks for the replies, I will test and see if the thermostat needs replacing.

Dan

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bendee

01-21-2008 18:13:05




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 Re: TEA20 Thermostat in reply to Dannyboy, 01-21-2008 12:36:27  
Thermostat is located underneath the radiator stabiliser bar where it is attached to the engine.
to test the thermostat.
"fill quart can with clean water,immerse the bulb of a mercury-in-glass thermometer,and heat steadily while stirring. With thermometer bulb adjacent to the bellows,but not touching the side of the can,observe the valve opening temp.To check the precise point of the valve opening,gently ease the valve from its seat and trap a .002 feeler guage or wire.Suspend the thermostat by the feeler and as soon as the valve opens ,the thermostat will fall.Continue heating the water slowly and note if the readings are within the required limits,which are Crack open 133 to 147 degrees F. Fully open 171 deg F. valve lift one quarter to three eight inch.
repeat as water cools."
"In cold weather starting and operating will be assisted if hood grilles are blanked off.
Reversing fan will considerably reduce air flow through radiator to help maintain a high coolant temperature.
Take care to locate the fan and balance piece in the original position."

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bendee

01-21-2008 18:12:54




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 Re: TEA20 Thermostat in reply to Dannyboy, 01-21-2008 12:36:27  
Thermostat is located underneath the radiator stabiliser bar where it is attached to the engine.
to test the thermostat.
"fill quart can with clean water,immerse the bulb of a mercury-in-glass thermometer,and heat steadily while stirring. With thermometer bulb adjacent to the bellows,but not touching the side of the can,observe the valve opening temp.To check the precise point of the valve opening,gently ease the valve from its seat and trap a .002 feeler guage or wire.Suspend the thermostat by the feeler and as soon as the valve opens ,the thermostat will fall.Continue heating the water slowly and note if the readings are within the required limits,which are Crack open 133 to 147 degrees F. Fully open 171 deg F. valve lift one quarter to three eight inch.
repeat as water cools."
"In cold weather starting and operating will be assisted if hood grilles are blanked off.
Reversing fan will considerably reduce air flow through radiator to help maintain a high coolant temperature.
Take care to locate the fan and balance piece in the original position."

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Toora Stephen

01-21-2008 14:26:22




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 Re: TEA20 Thermostat in reply to Dannyboy, 01-21-2008 12:36:27  
Where are you located? ie. what sort of weather conditions are you running it under? Is the radiator clean? Maybe it needs to be flushed. It is possible also that the thermostat is not opening. If you live in a hot climate you might consider removing it entirely.

- TS



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Andy Moncman

01-21-2008 13:30:22




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 Re: TEA20 Thermostat in reply to Dannyboy, 01-21-2008 12:36:27  
Dannyboy,

Yes there is or should be a thermostat in your cooling system, it will be under the gooseneck follow your top hose back to the first casting.
NAPA or this site will carrier them. Most of these tractor need the fins on the radiator cleaned out chalf and dirt clong them up and cause the tractor to overheat. Use air to blow out the dirt, you might want to remove the radiator and fan shroud to do this.

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