Oil & Fuel TC 30 crankcase full of diesel

[krice TC30]

QD? Not sure what that means.

 

[Soundguy]

qick disconnect ( hyd lines )

 

[MiserableOldFart]

This is one more story that leads me to suspect that if I ever trade in my tractor, it won't be on a NH. I'm not really sure about Kubota and Deere parts prices, but NH is way out of bounds on their parts. I had a pin break in my loader control a couple years ago and the part it was included in, about the size of a tennis ball, was over $300. I drilled it out and replaced it with a hardware store pin, and so far it has held. Lost the little round ball at the top of the loader handle once, and spent two hours finding it. Was kicking myself for wasting all that time on what I thought was probably a $3 part, but looked it up to find it was $20! Replaced one of the little rubber pads on a pedal that had worn out, and that was like $15. Great tractors, but these people are nuts! I also believe that's part of the reason that they only make models for a few years, and why they have so many different models. If they sold a bunch of one-offs (like the old 8n) there would be enough of them around to make it profitable for 3rd party parts to be made and sold for them.

 

[AndyG]

I'm not vary familiar with your model of tractor but getting hyd oil and/or diesel fuel in the engine oil are fairly common problems on tractors and it might not be to bad to repair. I doubt that you have a problem with injectors. Fuel will not pass through the injectors while the engine is stopped and you didn't run it long enough for a puking injector to fill the crankcase plus it would have run badly. Does the TC30 have a lift pump? The way that the fuel pumps and hyd pumps are usually mounted on the engines of these tractors means that a leak in the pump could end up in the crankcase. Instead of being an independent pump driven by belts, chains, or a coupler they are mounted on the side of the engine and driven by the engine's internal gears. A bad seal on an external pump would leak onto the ground. The integral pumps like your tractor has could leak into the crankcase. Now, we have to figure out which fluid has leaked into the engine. You said that the radiator is still full. Also oil with water in it is usually milky like coffee with lots of creamer in it. you did not mention milky oil. You did not say that the engine oil smelled like diesel fuel and you said that the fuel tank was still full. I doubt that you have fuel in your engine. You did say that the hydraulic fluid was low so I would look at the hydraulic pump first. On my TC40 the hyd and power steering pump are combined so be sure to check the PS fluid also. If it is hyd fluid in the sump you could probably run the tractor long enough to get the loader off and get it on a trailer or in your shop. You'll have to drain the oil down to regular level before you run the engine. DO NOT run the engine with the oil at a very high level.
P.S. I think that you mentioned 5W-30 engine oil in your original post. This seems a little thin for a diesel engine. Check your owner's book for the correct oil and us it.