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I've added the CBN-320 pump on my JM 454 and what a big difference it makes on the speed of our FEL.
Mike, that's great news. It took us weeks and a lot of hard work to take the engine apart and put it back together as we had to do this on 3 occassions to figure out what was causing the problem. Once we took that back plate off we noticed immediately that the oil was mixing with coolant in this area. The back plate was warped and there was no gasket and hence why the coolant was mixing with the engine oil. Here's a brief overview of what caused our issue.
If you left the top right hand bolt off there is a good chance that the antifreeze is going into the hole on your engine head as I indicated in my post #24. That plate needs to bolted on tightly to seal that hole properly. Take that plate off to see if you have oil in that area.
Does that bolt go in the same hole as the one that we sealed in our engine head. See my first pictures that I've posted.
Where was the bolt for the horn situated on your plate? If you remove that plate you will see that the oil has mixed with your antifreeze as well. Check the antifreeze in your radiator to see if you have any oil floating on top.
I'm adding more pictures. The plate in question, in our case, is the plate that is at one end of the the engine head facing the steering. Our plate includes a 90 degree pipe for which a hose is connected and goes to the heater in our cab. If you don't have a cab it should be just a flat plate attached to the engine head.
Mike,
We ran into the same problem when we purchased our tractor where the antifreeze would mix with the engine oil. We went through the steps of changing gasket, checking the engine head, liners and replacing the piston orings. What was causing our problem was the plate at the back of the cylinder head was not installed properly (missing gasket and plate was warped) and therefore causing the antifreeze to go down the engine oil port. To fix the problem we had the hole at the back of the engine head sealed and had a thicker plate made. We installed the plate with gasket and our problem was solved.
Here's a good document for your review.
