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back to my thermostat issue...

A

Anonymous-0

Well-known Member
Hey folks,
as I said before, I need an inline thermostat. I moved some stuff for an old lady down the street today. Her husband died a few years ago. She told me that he used to have a tractor that looked like mine and asked if I'd like to look at some junk before she throws it away. Amongst some tools and a few odds and ends I see something familiar. What I have is a thermostat for an earlier model without a bypass. Checked it in a pot of water and it works. How important is that bypass if I just pay attention that I don't overheat?

Thanks,


Dave
 
Normally, a thermostat needs a bypass even if it's just a weep hole.
The sensing bulb works much better with a flow of coolant passing
it, and it helps to purge entrained air from the system.
 
You'll have a hard time bleeding the air from the block without that bypass.
Why not make a tiny hole in it.
 
(quoted from post at 10:15:26 02/08/11) Normally, a thermostat needs a bypass even if it's just a weep hole.
The sensing bulb works much better with a flow of coolant passing
it, and it helps to purge entrained air from the system.
Click to expand...

It bypasses in itself a little, just the original one had an outlet in the side and a tube running to the lower hose.

Dave
 
Dave2. What you referred to a the by-pass on the original picture is actually where the water temperature probe screws into the thermostat housing. The actual by-pass is a small hole in the thermostat itself. The earlier versions of the tractors had the probe into the bottom tank of the radiator. Why it was shifted I do not know.
The fact that the thermostat in my D-214 is wide-open cold and installed upside down explains why only once had I seen the temperature gauge come off cold, and as soon as I stopped at the traffic lights it went back to cold and stayed there.
 
I have plugged the bypass on a 4010 JD trying to get
it to run cooler, Drilled two 1/4 holes in the
thermostat. I guess that would be 6mm
 
(quoted from post at 12:33:32 02/08/11) Dave2. What you referred to a the by-pass on the original picture is actually where the water temperature probe screws into the thermostat housing. The actual by-pass is a small hole in the thermostat itself. The earlier versions of the tractors had the probe into the bottom tank of the radiator. Why it was shifted I do not know.
The fact that the thermostat in my D-214 is wide-open cold and installed upside down explains why only once had I seen the temperature gauge come off cold, and as soon as I stopped at the traffic lights it went back to cold and stayed there.
Click to expand...
The picture I posted the other day was the closest I could find. The opening on it IS for a temp sender. The one I found yesterday is like the one in the picture without the sensor opening.
 
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