![]() Then pull the head and the oil pan to remove that piston. To fix this you will need to find what cyl it is first. This would also explain the high pressure in your cooling system. You could still have a cracked head, but it's less likely than a liner seal. Also the oil in the sample will have a lite color, not a dark engine oil color. ( use a quart jar like a old mayo jar, and take a full jar sample ) When you take the sample from the radiator, let the milky color settle out for a few hours, the oil will rise to the top of the sample, just smell it, if it's diesel, you will know right away. What usually brought this on is something failed in the cooling system and caused a unusually high operating temp, and wasn't caught in time to prevent the damage. We saw leaking liners in several large high hour stationary diesels I got to work on before retiring, and after your description of the problem, this seamed most likely. This is a really nice little tractor and I'm committed to resolving this. If anyone has had a similar issue or has any wisdom to offer I would sure appreciate hearing from you. Is there any other probable location where oil could enter the water jacket? Check deck for flatness and head for cracks.Ĥ) If none of this yields fruit, pull the pan, inspect for cracks and start the head scratching.Īm I overlooking anything obvious? It is my understanding that this engine does not have any type of oil cooler. Hoping this isolates the cylinder.ģ) Pull head and have it evaluated by a competent machine shop. Piston at the bottom, valves closed and 125 psi from the compressor in the injector port. Here is my plan (mostly of my own creation):Ģ) Pressure test each cylinder. I'm hoping this is a head or gasket issue but think it could also be a cracked block. I was talking to the folks at Hoye Tractor today and they suggested also posting on this site. I'm fairly handy around a gas engine but completely new to diesels. The previous owner replaced the head gasket but did not have the head magnafluxed or die penetrant tested. Starts and runs perfect but I'm told it is overheating and will blow the cap off the reservoir. The tractor is getting oil in the radiator but does not have water in the oil. The tractor is in excellent shape and only has about 1,000 hours. ![]() I just acquired a John Deere 950 from a friend. ![]()
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