I have a 1996 Kubota B20. I recently changed a leaking hose on the oil cooler and refilled the oil. Today when starting the tractor i noticed white foamy oil coming out of the lift arm breather tube. Does anyone have any idea what would cause this. I believe there is air pressure in the hydraulic system. how do i fix this?
White Foam fluid coming out Breather tube.
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85Hokie
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Is it overfilled?
Air would purge itself over time - foamy is a sign of water in the system.
check level and report back - look at dipstick ( assuming it has one) and see if the oil is clear - or see if there is any film on it.
North Idaho Wolfman
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I think someone recently had a similar problem. Pail of oil was stored outdoors and water made its way into pail through a crack or open vent.
North Idaho Wolfman
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I do not like when someone uses the term oil when they talk about the hydraulic system and hydraulic fluid, too easy to make a mistake.
It's kind of the same as saying "they put gas their tractor" when the better term would be they put diesel in their tractor.
It's kind of the same as saying "they put gas their tractor" when the better term would be they put diesel in their tractor.
Daren Todd
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Now dsys, it's really easy to get the wrong product from a pump. Especially at the newer stations in town since they also carry e85. They have a second nozzle at each pump, and each station uses a different color code on the handles. We had an employee fill up our f250 diesel with e85 last week. Just went to the yellow handle with out reading the label on the pumpI do not like when someone uses the term oil when they talk about the hydraulic system and hydraulic fluid, too easy to make a mistake.
It's kind of the same as saying "they put gas their tractor" when the better term would be they put diesel in their tractor.
I checked the dip stick and the fluid is clear, It is over the top of the full mark by a 1/4 " What would that mean? There is no filmy residue at all. I Assumed all air would purge itself......Yesterday when the fluid was coming out I also cked the dipstick and a burt of air came out of the hole when pulling the stick. The fluid then stopped seeping out of the Breather tube. any additional advice?
Sorry not oil....The same hydraulic fluid i have always used. (super UDT2)
All my products Fluid products are kept inside for that reason. The breather tube is located under the seat of the Kubota so the chances of water entering that are is slightly possible. If water did get into the breather tube how can I correct this issue?
85Hokie
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Might be time to empty and start over, bad thing is if any water IS in the system, not all of it will come out when drained - some "might" still be in there, but it is really the only way to go.
I was doing some research..when starting the tractor, It takes a little time before the Fluid comes out of the breather. I pulled the dip stick to ck the fluid and thee seamed to be some pressure in the system. One this pressure was released the fluid stopped coming out of the breather. You think this air getting sucked into the system which is building pressure and then overflowing out of the breather pipe? I was going to recheck all the hoses I replaced to make sure they are tight. Is there any easy way to check and see which fitting it might be?...Let me know thanks.Might be time to empty and start over, bad thing is if any water IS in the system, not all of it will come out when drained - some "might" still be in there, but it is really the only way to go.
North Idaho Wolfman
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Pull the hose off the breather and check that hose and fitting, because if there is air in the transmission case it's trapping air.
1/4" over full could (still unlikely) cause issues, you might be good to drain it back down to just full.
Yes it's also possible that it's sucking air, most likely not on the HST cooling side that you were into, but on the other (suction) side of the system.
Your hydraulic system is a lot more complicated than most as you have 2 hydraulic pumps on that system.
Just curious when you changed the filter did you change both?
HST RETURN
Hydraulic Suction Lines
1/4" over full could (still unlikely) cause issues, you might be good to drain it back down to just full.
Yes it's also possible that it's sucking air, most likely not on the HST cooling side that you were into, but on the other (suction) side of the system.
Your hydraulic system is a lot more complicated than most as you have 2 hydraulic pumps on that system.
Just curious when you changed the filter did you change both?
HST RETURN
Hydraulic Suction Lines
Attachments
Yes, I changed both hoses by the radiator on the HST and loosened the next 2 hose fittings behind each side to get a better fit. Once I set the hoses I re-tightened everything. This is why I'm confused. I will check all the fittings and drain the oil. Thx
There is no hose on the breather, looks like that's been missing since I purchased it. I'll drain it down tomorrow and ck those lines on the suction side. All records indicate that both filters were changed. I ordered a new hose today as weklPull the hose off the breather and check that hose and fitting, because if there is air in the transmission case it's trapping air.
1/4" over full could (still unlikely) cause issues, you might be good to drain it back down to just full.
Yes it's also possible that it's sucking air, most likely not on the HST cooling side that you were into, but on the other (suction) side of the system.
Your hydraulic system is a lot more complicated than most as you have 2 hydraulic pumps on that system.
Just curious when you changed the filter did you change both?
HST RETURN
Hydraulic Suction Lines