4440 help

notjustair · Jun 6, 2015

I've had the 4440 hooked to the sprayer for over a month because I can't get back in the field. It has a little spray in it so I run it every few days to agitate the tank.

I serviced it before I started spraying and had to add over a gallon to the radiator as I could see the core. I didn't fill it all the way to the neck - maybe an inch and a half below. 4440's have no overflow tank, btw. I just ran it to agitate and left it about 10 minutes. When I came back there was a lot of antifreeze coming out the overflow. Too much. The tractor wasn't hot at all. I'm thinking head gasket.

There wasn't any water in the oil when I changed it. Are 466 known for blowing a gasket but not getting it in the oil? I've got three of them around here and this is a first.

Tractor has 9600 hours on it.

Bob · Jun 6, 2015

Might find a broken head bolt, even!

Tx Jim · Jun 6, 2015

Possible faulty rad cap. I'd suggest to check rad pressure at engine operating temp

buickanddeere · Jun 6, 2015

(quoted from post at 13:26:32 06/06/15) I've had the 4440 hooked to the sprayer for over a month because I can't get back in the field. It has a little spray in it so I run it every few days to agitate the tank.

I serviced it before I started spraying and had to add over a gallon to the radiator as I could see the core. I didn't fill it all the way to the neck - maybe an inch and a half below. 4440's have no overflow tank, btw. I just ran it to agitate and left it about 10 minutes. When I came back there was a lot of antifreeze coming out the overflow. Too much. The tractor wasn't hot at all. I'm thinking head gasket.

There wasn't any water in the oil when I changed it. Are 466 known for blowing a gasket but not getting it in the oil? I've got three of them around here and this is a first.

Tractor has 9600 hours on it.

How old is the coolant's antifreeze or running just water ?

Texasmark1 · Jun 6, 2015

10 minutes is long enough to get the coolant to expanding. Service manuals I have read say that you just cover the core when it's cold. That way you don't have overflow and use the rated pressure cap.....ones I have used have said around 6- 8# but if you are working her hard and AC is on, you might want to up it a little.

When is the last time you had the radiator off and gave the core a good cleaning ? I had the 4230 that liked to run a little temp with the AC on and a load in the summer. Did the normal stuff. Radiator core looked good from the side. Upon removing it however, it was severely clogged with chaff, even though my screens were in place and kept clean.

farmer656 · Jun 6, 2015

first i would chk the oil for any contamination, is it over full? is there water in it, next I would do what they call the coke bottle test, take a clear plastic or glass bottle, fill it with water, next take the over flow tube from the radiator, and stick it in the bottle submerged in the water, start tractor and see if you get any bubbles in the water , make sure you have the radiator cap on, if you have bubbles, you have a blown head gasket or other problems with the head

Hartman · Jun 6, 2015

i think everything said is the extreme worst case scenarios. first i would run it longer and bring it up to temp. maybe even under load. i have had many times run something for very shot while,just long enough to start to build pressure but shut it off before the thermostat opens and begins to flow resulting in expansion of fluid at overflow. just my 2 cents

Mike Aylward · Jun 6, 2015

Does your 4440 have the original second cap under the hood? If these go bad you can lose coolant and wonder where it went. Most original radiators have been replaced with the single cap style. The second cap was designed to raise the pressure when the coolant got to a certain point which would allow the tractor to not overheat but run a lower system pressure in normal conditions. It was a theory that didn't work out so well in the field. A single cap radiator works better. Mike

notjustair · Jun 6, 2015

I'm down to a single cap. I think I will swap caps with the 8430 before hitting the panic button. It would be nice to have a 15 dollar fix, not a 1500 one.

Tx Jim · Jun 7, 2015

There's also the possibility that valve(parts key 26) is faulty.

tim s · Jun 7, 2015

They rarely blow a head gasket,,my vote is a pin hole in the liner putting compression into the water system, one way of checking it is to put a radiator pressure checking pump on it, most of the testers need a spacer to make it seal on the deeper than normal radiator neck, I use a cam-loc fitting quad ring for an 11/2" coupler fits in the neck nice,pump a little pressure into it and start the engine bring it up to half throttle and watch the gauge, if it starts climbing into the hi pressure zone you know you most likely have a hole in a liner..

4440 help

notjustair

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Bob

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Tx Jim

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buickanddeere

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Texasmark1

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farmer656

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Hartman

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Mike Aylward

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notjustair

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Tx Jim

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tim s

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