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Hydraulics Don't move

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Matthew Johnson

12-13-2004 17:14:29

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I purchased a Farmall 656 about four years ago. Regular clutched, tractor, not hydrostatic.
It has ran very well for me and has never caused any problems. It always leaked alittle hydaulic fluid underneath the belly of the tractor but nothing bad.
I have occasionally checked the level and topped it off when neccesary. This past weekend (Sat.), I decided to change the hydraulic fluid and filter. Pure cream!!
I purged all that I could making sure that all cylinders were compressed. I let it drain all day.
Replaced approximately 14 gal. of oil and installed a new filter. I ran it all afternoon on Sunday doing snow fence work and it ran and work great. This moring (Mon.) It worked, when bucket was raised to back it out from the barn. It sat outside all day today, approx 18 degrees and when I went to park it back in the barn, none of the hydraulics now work.
There is a whining coming from under the floor of the tractor. The whine, changes from high pitched to low, loud to almost not even there. Is the pump shot or could it be that water/oil mix was trapped somewhere, where it could drain?
What should I do? Any suggestions are appreciated!

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Bus Driver

12-14-2004 04:47:33

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Re: Hydraulics Don't move in reply to Matthew Johnson, 12-13-2004 17:14:29

I completely agree with cowman about the frozen moisture. I could not get all the moisture out of my (non-IH) tractor hydraulic system. It would not work except at temps above freezing. I added a bottle of pure isopropyl gas line antifreeze to the system. The results have been good. DO NOT ADD ANYTHING containing methanol.

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Allan in NE

12-13-2004 17:51:35

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Re: Hydraulics Don't move in reply to Matthew Johnson, 12-13-2004 17:14:29

Matt,

Again, you can't go wrong by listening to the Nebraska Cowman. He's been there, he's done that and in my view, he is right on target again.

You've still got water in the system. You got the system hot, then the tractor sat and the moisture condensed, probably froze and is now plugging up that intake.

Allan

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Nebraska Cowman

12-14-2004 03:56:20

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Re: Hydraulics Don't move in reply to Allan in NE, 12-13-2004 17:51:35

ya Allan, But give us some ideas here. How is he going to get it hot in the winter time? He said in a email that a friend suggested filling with diesel and running to dry it out but I thought that was a bad idea.

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Allan in NE

12-14-2004 05:23:04

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Re: Hydraulics Don't move in reply to Nebraska Cowman, 12-14-2004 03:56:20

Mornin' Howard,

I agree, getting the moisture out of an outfit in the middle of winter with no access to a shop is a stinker.

I've used a space heater propped up at an angle (setting on a 4x4) to thaw 'em out. That will at least get it to the point of stopping the by-passing and squealing.

Then, after using the tractor for the chores and getting it good and warmed up, I would change the oil and filter before letting it set overnight again.

The diesel fuel trick works fine for cleaning out sludge and mud, but I don't think it would do a bit of good if the thing is iced up.

Allan

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Nebraska Cowman

12-13-2004 17:27:24

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Re: Hydraulics Don't move in reply to Matthew Johnson, 12-13-2004 17:14:29

I say you've got ice in the relief valve or in the oil pickup. Whatever it is I wouldn't use the tractor til it warms up or use some heat source to thaw it. Someting I don't fight here in dryer climate but can be a real problem in some areas. You did the right thing changing the oil but still must have a little moisture left somewhere.

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