D17 SIV Running hot, then normal

dhermesc

Well-known Member
I baled (IH 47 square baler) for about 3 hours in the heat Saturday. Sometimes it was running at 170-180, other times right on the edge of the red at 220 - it kept varying between these temps most of the afternoon. Sign the thermostat is sticking or bigger issues?
 
I would first do a simple flush then replace the thermostat which is likely to be sticking but since you have to drain it some to replace it why not do a flush with vinegar at the same time so your sure the system is clean
 
My D 15 was running hot now n then so I drained, flushed and cleaned the radiator and that sure cured it. I didnt have to change my t stat but if you suspect yours is sticking, Id go ahead and change it while you're at it just to be safe. Hopefully there's no gasket leaks or a crack in the block or head ?? Look for signs of gassing or air bubbles getting into the coolant.

John T
 
I had drained and flushed the radiator earlier this year (along with all the other fluids) - I was actually kind of surprised that the coolant was reasonably clean considering the neglect this tractor has suffered. Doing it again (with vinegar this time) probably won't hurt when the thermostat gets swapped.


I was hoping this wasn't a sign of a blown head gasket - I already have one of those projects staring me in the face.
 
I've spent thousands of hrs on a series 4 gasser. If the radiator core is clean and full of coolant, fan belt good condition and tight, and a good thermostat, they do NOT overheat like that. If it's a diesel, it might be a head gasket.
 
Well as long as you do not have water in the oil or other such things not likely to be a head gasket unless you keep letting it run hot that is. Also if you flushed the system but did not replace the thermostat when you did you may have caused the thermostat to stick
 
I can only guarantee on of the three - that being the fan belt is in good condition and tight. The radiator MIGHT be clean as it was only flushed with water when drained and refilled - it will get a more thorough flush as mentioned below. I have no idea on the condition of the thermostat (and water pump?) as for all I know it could be original. While it was 99 degrees on Saturday I know running a baler isn't an especially taxing job for a D17 GAS - it not like it was hooked to a plow grunting it out in that heat.

I kind of doubt the radiator being half clogged as I doubt it would cool down to the coolest operating temp without anything else changing - I would assume it would stay in/near the hot range until I pointed its nose towards the breeze the and let it idle with no load. I just didn't know how these tractors acted with a blown head gasket. My FIL installed it years ago after having the head worked on. It wouldn't surprise me one bit if he reused the original head gasket after going through all the effort of rebuilding the head. He was the kind to use gum and saving the baling wire for a permanent repair......
 
Remove the grille screen and shine a light thru the radiator core....it has to be clean all the way thru. Been thru this before arguing with customers. Just cause it looks clean on the front doesn't mean it is clean all the way thru.
 
I agree one should be able to shine a light in the back side and see the light form the front. If you do not see the light then it is clogged up simple as that and need a good shower threw it
 
Hi Rich ,,.. and others , i would bet the radiator fins got junk trash in it ,, seems like every used tractor i ever got in here would run hot this time of yr ,.. WHAT I DO ,,. with the engine idling fan belt tite ,i spray,pour or brush or flip a coffee can of simple green or purple ---- soap,. the fan will suck that soap rite into the fins where it needs it./that is followed by a garden hose spraying thru the fins , do NOT bend the FINS WITH A pressure washer , the fan will spray soap all over everything ,, making it a good time to clean the motor and other componets ,. go to full throttle on the engine and continue garden hose ,. there mite be a reason to treat again , if there is a bunch of junk in there ,.you will see it rolling out ,.. the last time i didone i used a old mini-van half turtle cargo carrier as a catch basin , i reused that soapy water to scrub the wheels down so i could paint them ..
 
I do what I call the flash light check. Shine a flash light in from the engine side and look from the front. No light seen then time to wash it out with a garden hose from the engine side since it is sucked up from the front. Doesn't take a lot of pressure to clean one out
 

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