Anti freeze in oil on 7020 question.

I have a 7020 that is giving me fits. I overhauled this engine quite a few years ago. I sold the tractor to a friend of my sons. Last fall they got it hot and now it is getting anti freeze in the oil. It appears to be burning most of it. I had 27 psi on the cooling system with the block heater plugged in for two weeks. Had the pan and the oil cooler lines off and no water leaked out any where. I took off the turbo to intake pipe and there was moisture in it so I had the intercooler tested. It leaked from the middle of the cooler only if I had 50 psi and hot water in it. The replacement did not. I put the whole thing back together, heated it with pressure again. No problem. I have been running it for a couple hours an am still getting steam out of the breather. My Question for you guys is what are the symtoms of a leaky copper injector sleave or is there somthing else that I am missing? I have no external leaks. If I pull the injectors will water show up when I crank it?

Leaky injector sleeves is what turned out to be the problem on my 7000.  I guess it could show on top of the sleeve and in the sleeve itself if the top o ring is leaking, but if it's the bottom o ring leaking, like mine was, it will look a lot like a head gasket leak.  It will get hot, have compression bubbles in the radiator, and after a few hours, it will collect some coolant in the bottom of the pan.  That could be your problem, as it may only be leaking when you have compression in that certain cylinder causing the sleeve to be under a different load than when it is just sitting stationary with pressure in the coolant system (think of how the pressure differentials will be with compression vs without, they will be opposite).  Hope this helps.  I would pull the head and have it checked out by a shop or someone with the proper testing tools for that head.  It's not cheap to replace all those sleeves, so you want to make sure that's your problem before you start throwing money at it.

Hurst

what you can try to do is take off the oil pan,put pressure on the cooling system with a pressure tester and look around all the cylinder liners,look for coolant leaks

Looks like the head must come off! I can't remember if I had new sleaves put in this one or not. I know I put them in the 7000 but this one I can't remember.

If they got it HOT, the copper sleeves have probably loosened in the head and are leaking.

When the copper sleeves leak, most of the fluid will be burnt up, it's what washes past the cylinder walls that will make it to the pan.  If it gets bad you'll start to have a lot in the pan.

Hurst

what kind of money for the 5020 ?

Machinist just gave me the bad news. Its cracked around the injectors also.