Several months ago, I posted a question concerning our JD 2510 diesel that has antifreeze disappearing. No leaks, drips, just disappears. Several folks thought perhaps there was a hole in a cylinder liner allowing AF to get into cylinder and burn up, or cavitation of the block, etc. I was also asked to check if there was one ring on the sleeves or three. Our neighbor is a mechanic and he has now had a chance to start to tear down the engine. Here's what he's found:
He took out two of the cylinder sleeves. There are three rings in sleeves. There is no obvious cavitation of the block. The head gasket appears to be okay. Head does not appear to be cracked. One valve appears to be bad, but the sleeve associated with that valve was removed and everything appeared okay.
Anybody have any ideas what could be causing the AF to disappear at a goodly rate when running the tractor for even a few hours, given the above? Also, should we keep going and look for anything else?
There's another thing. Every since this tractor was new, my Dad had to drain a bit of AF from the oil before using. I think it was not so much an issue in hot weather. He said JD didn't stand behind this tractor. He was told that JD misaligned the bore of one cylinder in some of the early 2510's. Others say they never heard of that. In any event, the AF started disappearing at a goodly rate just earlier this year, the draining issue was just a little bit before using the tractor until this year. But he's had the tractor since new and said it always had a minor issue with the AF in the oil that he had to drain.
Now, if you were to run it for a few hours in the field, you may have to add a quarter gallon of AF.
However, the oil level does not rise that I can tell, although there is still some AF in oil, and it was noticeable when drain pan removed. Radiator now has oil in it also..
Any thoughts on this would be greatly appreciated. Thanks in advance.
He took out two of the cylinder sleeves. There are three rings in sleeves. There is no obvious cavitation of the block. The head gasket appears to be okay. Head does not appear to be cracked. One valve appears to be bad, but the sleeve associated with that valve was removed and everything appeared okay.
Anybody have any ideas what could be causing the AF to disappear at a goodly rate when running the tractor for even a few hours, given the above? Also, should we keep going and look for anything else?
There's another thing. Every since this tractor was new, my Dad had to drain a bit of AF from the oil before using. I think it was not so much an issue in hot weather. He said JD didn't stand behind this tractor. He was told that JD misaligned the bore of one cylinder in some of the early 2510's. Others say they never heard of that. In any event, the AF started disappearing at a goodly rate just earlier this year, the draining issue was just a little bit before using the tractor until this year. But he's had the tractor since new and said it always had a minor issue with the AF in the oil that he had to drain.
Now, if you were to run it for a few hours in the field, you may have to add a quarter gallon of AF.
However, the oil level does not rise that I can tell, although there is still some AF in oil, and it was noticeable when drain pan removed. Radiator now has oil in it also..
Any thoughts on this would be greatly appreciated. Thanks in advance.