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White 2-105

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wisbiker55

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I have a White 2-105. The oil cooler was leaking in the radiator and I replaced the radiator. Also the thermostats were sticking. I replaced the stats and as I was working on it I noticed the water pump bearing was loose and noisy.So I replaced the water pump. I can"t seem to get the coolant to circulate after all this work.The engine gets hot and the bypass hose is warm but the coolant doesn"t seem to circulate thru the radiator.Pressure builds up in the radiator and just blows coolant out the overflow hose. Could it be air locked?
 

I doubt very much that it could be air locked, but it looks like indications are that it needs a good flushing.
 
You said you replaced the radiator. Did you put in a new core or did you get a used radiator off another tractor? Did you replace the water pump with another off a junk tractor, did you buy a rebuilt or did you simply repair the one you have? You have a lot of variables here. If you simply took a radiator off another tractor, the thing could be plugged up as stated.
The thermostats could be backwards. The replacement water pump could have the impeller worn so badly that it isn't moving water properly, but I would think that would be the least likely. My vote would be for the plugged radiator, then the thermostats backwards then the waterpump. Hope that helps you out.
 
I have a new radiator, a new water pump, and new thermostats and they are installed the right way. I flushed the engine while everything was apart. It just seems like the thermostats aren"t opening. I was thinking of taking them out and running it then.
 
Before I go through the trouble of replacing a thermostat I heat then in a pan of water with a thermometer to make sure it opens at the right temperature.

Wouldn't be the first time a new one was bad from the get go.

Donovan from Wisconsin
 
From year to year small changes are made. Any chance that the new water pump is spinning the wrong way. I have seen this happen.
 
When the engine is up to temp, is the air coming through the radiator warm? If it is, the coolant is circulating.

You can try removing the thermostat just to see what happens. If it circulates you can test them in boiling water.

Hate to say it, but blowing coolant out the overflow is also a sign of a leaking head gasket. Is there a history of overheating?
 
some thing not right. you could remove the thermostats, and try that to eliminate that problem. are you running it at a fast idle while warming it up? spring end on stat goes towards engine. with rad cap on the temp guage should go towards hot then when stats open you can see the guage drop down to normal. this is the first place to start, to narrow things down.
 
Sure sounds like bad thermostat if the blowing of coolant is once engine warms up. I'd pull the thermostat and boil it to see it open.
 
I took both thermostats out and refilled with coolant. Coolant circulates thru the radiator. Took the thermostats in and put a pan of water on the stove. Both opened up at 180 degrees. Water pump is turning the right way, and no, no one left a shop rag inside.Is it going to hurt to leave them out till I am done planting corn? I know the engine isn't going to get as hot as it used too.
 
I think if it was mine,I'd at least punch the centers out of the old ones and put them back in. I'd be afraid of the back cylinders getting too hot with nothing in there.
 
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