I Need Help!!

Allan in NE · Dec 12, 2009

This is a view thru the center link cover of my Hydro 70. Tractor is running.

Oh yeah, and the PTO works just fine.

The only "fluid" I can see moving/leaking is the white foamy "milk" pukin' out of the lube manifold. It is for sure pumping more air than oil.

Also, don't know if it is the sound of the air or the "burping", or what, but there is a kind of non-rythmic, 'clunking' sound going on.

Can you guys see the problem? Or should I now yank that pump to get at the oil intake manifold to find the problem?

Thanks,

Allan

Doug - Iowa · Dec 12, 2009

You said earlier she'd froze up, did it crack the pickup tube and she's sucking air? Maybe try overfilling it to raise the level? I recall that's worked on '06 series...

Allan in NE · Dec 12, 2009

That's what I'm thinkin'.

It's gotta be something that is common to all three pumps. Wondering if I should go into that pump area next because that is where the manifold lives.

There was some water in the belly and it was 25 below. Darned thing hasn't worked since.

Allan

Bill(Wis) · Dec 12, 2009

Yeah, it appears to be homogenized. Once that happens you'll never get the water out of it. Molecules have been broken down to the point they'll never become themselves again, like they do in homogenized milk. Me? I'd heat that baby to within a dgree of boiling-torpedo heater underneath with a tarp over the tractor- and try to drain all that crap out of there before anything else. I could be all wet but I'd sure like to see something better in there.

keh · Dec 12, 2009

This episode was not cold weather related, but once I mixed 2 brands of hydraulic oil and the mix foamed. Drained it and put one brand in and all was well. Didn't happen with just any 2 brands, but did once. If you haven't mixed oil brands than obviously that's not your problem.

Good luck. Not good at all to have to work on it in the cold.

KEH

Owen Aaland · Dec 12, 2009

Is that white line in the picture a steam of oil? If it is that will cause foaming.

If the tractor sits for a few hours to let the air separate from the oil, do you have hydraulics for a little bit and then lose them? That might indicate that the foaming is occurring somewhere other than the hydraulic pump area.

If there is air in the system immediately on start up that might point to an air leak at the filter/hydraulic pump area. Remember that the center section of the hydro is completely filled with oil in normal operation so a crack or leaking O-ring on the suction manifold will not be apparent once the housing is filled. Cold oil may be stiff enough to cause problems there that don't show up when the weather is warmer.

Another possibility would be a failure of the hydro charge pump. A failure there may allow the hydraulic pumps to suck air and if the high pressure loop of the hydro lacks charge pressure you sure aren't going to get any movement on the transmission input shaft.

John A. · Dec 13, 2009

Allen, Howdy there ol Neighbor! If..that oil is running Milky / Foamy. Where did the water come from? Surely that is not condensation build up since you got her, If I remember correctly when you got this tractor it wasn't acting as it should it took a while, and some tinkering to get it to act right. Maybe if you could get that tranny hot enough, to get a good drain and flush with solvent to clean out the remaining moisture, then refill it should go back to working!
So back to my original?? where did that water come from?, a vent or an overlooked bolt hole? Also yrs ago we had an old Immersion Heater (looked like a small summer sausage w/ an electric cord on the end of it, we ran it down into fuel tanks when we failed to get a tractor or truck DSL tank when it was trying to jell up. one of those or some sort of heater might be needed to help that ol girl when it is really cold. I have heard of a big magnet heater that truckers use on the oil pans of big trucks might help too. Hope you get it figured out
Later,
John A.

Allan in NE · Dec 13, 2009

Hi John,

I just changed the oil. Got about 1/2 cup of water out of the lower rear end sump after it sat all night.

The white in the picture is air foamed oil not water. She's sucking air from some darned place.

Allan

Anonymous-0 · Dec 13, 2009

allen if i had that thing i would jack up the rad. cap and run a John Deere under it

TGIN · Dec 13, 2009

Allan , Yesterday I went to start my 574 and the starter would not spin so I took it off and took it in the shop and pulled the back cover off and it was full of ice . The rubber plug on top had let the water in as the tractor lives outside . I layed the starter next to the wood stove and it took three hours to melt all the ice out of it . If you have water in your system it could be ice , I know you ran the heater on it but it would realy take a lot to get inside . We hav ent been near as cold as you have , just down to 5 then up to 35 in the day . I think I would try to get it in a shop or some where it can totaly thaw out before I started pulling to many parts off of it .

Ted in NE · Dec 13, 2009

Allan,
I see my first thoughts were wrong. Did the oil you drained out indicate a lot of water in it? There is not close to the normal lube oil flow to the diff lube area. Could there still be ice in the bottom of the rear houseing next to the end of the suction tube? Have had charge pumps fail,do not remember them causeing aeration. Transmission would just not work. Does the tractor have the spin on charge filter? I assume you changed this also.
I think I would pull the cover off on the bottom of the trans. See if there is any metal or anything that would give a hint of problem. Did the trans preform well before this? Pulling power, servo response ect. Puzzled as to why the regulator block got hot the other day. Almost had to dead head the charge oil flow to do that.
Might just be ice related, need to get it in and give a thorogh thaw if possible. Is there any oil comeing out the weep hole in the flywheel houseing? Will be thinking about it further.

Ted

Allan in NE · Dec 13, 2009

I've got a leaky cylinder on that loader that will seep a little; worse when cold.

Last week sometime, I could tell I needed a little oil because the loader was running out of reach.

Also, the first night it got pretty cold, had no hydro until I let it warm up a bit. I put in 2 gallon of oil that I use in my swather Hydro; got it from Henkens last summer. Should be good stuff, I thought.

Everything worked fine for a day or two.

The last day I used it, I felt a 'hicup' in the hydro when I went across a dip. Hauled the hay to the cattle and felt the loader starve once real quick again.

Pulled it back out of the gate and parked it like I always do. Everything was working fine when I shut it off.

That night it got so ungawdly cold. Next morning, it wouldn't start. Jumped it with the pickup and I haven't had any hydraulics since.

Thanks Ted, number is 3797 in Chadron if ya think of anything.

Allan

Allan in NE · Dec 13, 2009

Oh yeah,

And when I changed the oil, got about 1/2 a coffee cup of pure water out of that rear sump under the rear end.

Nothing but pure oil came out of the transmission drain.

Allan

Allan in NE · Dec 13, 2009

Opps, forgot again. :>)

The darned hydraulic filter did have some ice in it too. But there was absolutely nothing in the bypass screen.

Clean as a whistle.

Allan

John A. · Dec 13, 2009

Allen, So if air is causing the oil to foam that means it must be getting it from some point higher than the standing full mark or at least the full while the motor is running level of rear end fluid.
I will bet some O-ring or seal has given way. That should narrow the scope of where to look. Hope this helps.
Later,
John A.

FarmallFrank · Dec 13, 2009

(quoted from post at 06:28:09 12/13/09) allen if i had that thing i would jack up the rad. cap and run a John Deere under it

Good god, then he would have nothing but problems.

Allan in NE · Dec 13, 2009

Yeah,

I'm trackin' right with ya.

Too derned cold out there today, but.......

This is a picture of the oil suction manifold (ignore the green arrow). If you look "thru" the tractor to other side you can see the big pipe that goes from this manifold across the bottom & up at an angle to feed the charge pump of the hydro.

That sucker would be out of the oil level at it's upper end. I'm gonna drop the oil and check that bird next.

Something is really giving 'er a dose of air in a big way.

Allan

I Need Help!!

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