I have a Long backhoe attachment that i only use once or twice a year. It's a 3 point hitch attachment with it's own pump that runs off the PTO. Hooked it up the other day, it was running weak and checking the fluid level, i noticed it was milky white, so it's obviously contaminated. My questions: Is that just water? what is the best way to flush it out to make sure i get it out of all the lines and cylinders? Neighbor said to drain the system, fill it with diesel fuel, operate all the cycliders, then drain the system and refill it with fresh hydraulic fluid, will that work? fianally, any way to filter the old fluid? not trying to be too cheap here, but i only use the thing a few hours a year, and times are tight.
- Thread starter kirby
- Start date
Anonymous-0
Well-known Member
I have let milky hyd oil sit for quite a while and the water will drop out. Is it 100% the right thing to do? probably not. But if I know its not too old and not dirty I have done that.
Anonymous-0
Well-known Member
I would not put diesel in it. And I certainly would not try to cheap skate it by some type of "filtering". Change the fluid - operate few hours - change again - operate - inspect fluid. Now find out how the moisture got in it. Where do you store it? Tom
Michael Soldan
Well-known Member
Yes, it is the right thing to do. Oil floats on water , so if you let the liquid sit long enough the water will be at the bottom and can be drained off. I have let an H sit for several days, then pull the trans plug and decant the water out of the rear end, surprisingly clear ,clean looking water draining out. Now this has been good rear end oil that I had put in the tractor a year or so before, so I knew it was OK but it had gotten rainwater into it from sitting out.
Anonymous-0
Well-known Member
You need to figure out how the water is getting in before you do anything. I would drain the oil and put new oil in. It probably doesn't hold that much. If there's a little moisture left, it should disipate once you get the hydraulics warm. A new hydraulic filter should help to filter out a little left over water as well. Doesn't seem worth it to take a chance with contaminated oil. Dave
Allan in NE
Well-known Member
Yes, it is water and is there because of accumulated time in use. A normal thing.
Modern hydraulic oils are formulated to hold moisture in suspension, it is what the oil is designed to do. Trouble is, in these temperatures, it tends to freeze up and deal ya fits.
Bad news is, if you want to wait until it "settles out", yer gonna be way older and lots greyer by the time it does. :>(
Listen to your neighbor and use the diesel fuel to flush. It really works slick on an open-centered hydraulic system and at $10.50 a gallon for the new oil, plus the cost of that new filter, you'll probably only want to do this job once.
Allan
Modern hydraulic oils are formulated to hold moisture in suspension, it is what the oil is designed to do. Trouble is, in these temperatures, it tends to freeze up and deal ya fits.
Bad news is, if you want to wait until it "settles out", yer gonna be way older and lots greyer by the time it does. :>(
Listen to your neighbor and use the diesel fuel to flush. It really works slick on an open-centered hydraulic system and at $10.50 a gallon for the new oil, plus the cost of that new filter, you'll probably only want to do this job once.
Allan
Anonymous-0
Well-known Member
There are ways to remove the water but it can be dangerous so nobody is going to tell you how.
Anonymous-0
Well-known Member
Seafoam makes a product with the name Transtune. It has directions on the container for hydraulic systems to remove the water. I've used it and several others on the forum have also on Long tractors. It works. The directions are 1 can of transtune for each 5 gal. of hydraulic oil. I add the transtune and run the tractor and loader until it's fully warmed up. Then drain the hydraulic oil from the belly, get as much drained from the hoses to the power steering and leave the loader arms up and crack a line so it comes down slow and get as much oil out of the cylinders as possible. The same for the curl cylindrs for the bucket. I let it drain over night to get as much oil out as possible then refill the system and cylinders.
It's always work good for me and several others have had good reports as well. The transtune will collect the moisture that's clinging to the walls of the transmission if you run it until the system is up to operating temp. It should work for your back hoe the same.
Last time I used transtune it was about $9 per can.
It's always work good for me and several others have had good reports as well. The transtune will collect the moisture that's clinging to the walls of the transmission if you run it until the system is up to operating temp. It should work for your back hoe the same.
Last time I used transtune it was about $9 per can.
Mel in SW Iowa
Member
My experience has been:
Water contamination of 90W will settle out so that
you can carefully remove the drain plug, holding it up to let settled out water drain and then screw the drain plug back in. If you don't have
a steady hand that day, be prepared for a 5+ gallon mess.
Most of the Hy tran formulations that are used for transmission, differential, and hydraulic oil
hold moisture in suspension for a long time. I have five gallons I drained out of an Oliver 1365
three years ago that is still in milky suspension.
The oil I replaced it with seems to let some of the water settle out in 30 days.
Water contamination of 90W will settle out so that
you can carefully remove the drain plug, holding it up to let settled out water drain and then screw the drain plug back in. If you don't have
a steady hand that day, be prepared for a 5+ gallon mess.
Most of the Hy tran formulations that are used for transmission, differential, and hydraulic oil
hold moisture in suspension for a long time. I have five gallons I drained out of an Oliver 1365
three years ago that is still in milky suspension.
The oil I replaced it with seems to let some of the water settle out in 30 days.
teddy52food
Well-known Member
I have put a little at a time in a shallow pan on the wood stove in my shop. Just get it hot enough to boil the water out. Don't let it get smoking hot.
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