580-B Power Shuttle moisture

CNJ152 · Aug 31, 2014

Does any one have an idea about how to stop moisture from getting into the oil. I purchased a backhoe that had water in the system. It had damaged the pump. We fixed the pump I ran some oil through the system with the rear end off the ground, drained it and changed filter before new oil and and after running it raised. It gets water(moisture) in it again. I know it will ruin the pump and other parts if not stopped. Hope someone can help. Thanks in advance.

AJ. · Sep 1, 2014

Moisture is a right SOB to get rid of,the slightst amount will conterminate the new oil,places like the torque,oil cooler,filter lines and control valve retain some,most people just change the oil a bit more often,that way they know that the oil is good,if the water is getting into the shuttle check to see the breather cover is in place and the filler plug,all rubber boots around the shift levers need to be intact.Case TCH is recommended but any good quality Hy-Trans tractor oil will do just fine.
AJ

Jiles · Sep 1, 2014

I have owned a Case 480D for about 7 years. When I purchased it, the hydraulic oil was a light tan color that indicated water contamination.
After the machine had set for about one month---I was doing repair on other items---I decided to change the hydraulic oil.
I had not bought the new oil and decided to let it drain cold for a few days , don't usually drain any type oil cold.
To my surprise, about one gallon of water drained before hydraulic oil started flowing!
I added oil, used the machine for a few hours, and it worked as it should.
Each time it set for a period of a week or two, I would drain the water and eventually the old oil looked almost clear.
I then changed the oil and have not had any more water in the system.
I might add that this backhoe set outside it's entire life but I don't leave any of my equipment outside, unprotected.

CNJ152 · Sep 1, 2014

Thanks for the reply, i am thinking the cover gasket on the compartment just in front of the transmission may be leaking?

curtis larson · Sep 1, 2014

Why don't you check the trans oil cooler?

jonesrj · Mar 6, 2017

I wanted to update this post as it was started by my Dad (CNJ152) and he passed away suddenly late last year at the young age of 64.

Curtis, we bypassed the oil cooler on the 580B as a way to eliminate potential water leaking into the transmission oil. After using the tractor sparingly for a while, it seems the leak into the oil has stopped. I will get the radiator fixed (other leaks) and see what they can do about the cooler -- will either fix it or go with an aftermarket cooler. Thanks Curtis.

Dad and I said this tractor ran too good to tear it down and part out, clutches grab good and hard when everything is right...I think the leaking oil cooler was the problem.

AJ. · Mar 8, 2017

Sorry to hear of your Dad's passing,he was a young man,may He Rest In Peace.
It would be unusual for the rad to leak into the tranny cooler without the oil leaking into the coolant as the pressure of the oil is much higher,now that you got the hoses off try to get a low air supply connected to one port and block the other,pressurize the cooler a little and check for air bubbles in the coolant,no bubbles the cooler is more than likely ok.
AJ

580-B Power Shuttle moisture

CNJ152

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curtis larson

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jonesrj

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AJ.

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