212 grader weirdness

[invisabledog]

Had a chance to pressure wash the ole girl today, in hopes of better seeing the fuel leaks and and to try and stay somewhat clean while working on it. There was alot of graese and oil laying all over the engine. Got it clean and finally saw the pad where the engine number tag would have been. Tag is long gone and there is nothing stamped on the pad. The strange thing is, I have oil seeping out of the radiator tubes. There is no oil present when you open the cap and look in. I've been losing coolant and the rad core looks like it's seen better days. No water/coolant in the oil. Don't see any oil cooler lines going to the rad. There are no bubbles in the coolant when running. What is comming out doesn't seem to contain any coolant, looks and feels like straight oil. I have a bucket catching the leaking fluid to see if it seperates. cleaning it did prove 2 things, my fuel leak is at the injecter pump bases and it was military, lots of olive drab paint under all the other colors and the grease. wish it would fit in my shop so I could work on her this winter.

[Mike Walsh]

Any chance you still have an oil cooler on that thing that happens to be leaking now that you removed all the grease? I think you will find an o-ring under each pump sealing it to the fuel rail.

[invisabledog]

Any chance you still have an oil cooler on that thing that happens to be leaking now that you removed all the grease? I think you will find an o-ring under each pump sealing it to the fuel rail.

I figured there would be o rings under the pumps. Not sure about the oil cooler. The parts book shows one. It seems to be separate from the rad. It's possible the fan is sucking the oil from the oil cooler and thru the rad core. I'll have to pull the grill screen and see what I find.

[ccjersey]

Very common for oil coolers to leak, and like you say the fan gets hold of the leaked oil and it winds up somewhere else sometimes. I don't know why you wouldn't see oil lines running from the filter base to the radiator unless it has been disconnected, but that should have eliminated the oil leak.

The D3400 engine had a full width oil cooler in front of the radiator and the D311 in the 9T 1947 and later graders had the oil cooler along the side of the radiator core.

[invisabledog]

Very common for oil coolers to leak, and like you say the fan gets hold of the leaked oil and it winds up somewhere else sometimes. I don't know why you wouldn't see oil lines running from the filter base to the radiator unless it has been disconnected, but that should have eliminated the oil leak.

The D3400 engine had a full width oil cooler in front of the radiator and the D311 in the 9T 1947 and later graders had the oil cooler along the side of the radiator core.

I found the cooler lines running along the inside of the side panel, still covered in grease that I missed. The cooler is what's leaking. Now I see why the engine was such a mess with grease and oil all over.

[Mike Walsh]

You can eliminate the cooler and plug the lines at the filter IF you remove the bypass valve components so oil will circulate through the bypass port in the filter base. A whole lot easier than replacing a cooler that's not necessary for the health of your engine.

[invisabledog]

You can eliminate the cooler and plug the lines at the filter IF you remove the bypass valve components so oil will circulate through the bypass port in the filter base. A whole lot easier than replacing a cooler that's not necessary for the health of your engine.

sounds like a plan. my poor wallet can't take much more. lol