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JD 410 Water in hydraulic fluid

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ChrisB

12-08-2007 13:02:55




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Well I have been working on getting a JD 410 backhoe in better shape.
Had a rear-end issue that left the machine open for a while. Afterwards a hydro problem where most of that came apart in looking for a leak. READ .... Lots of new fluid in and out of the machine.

All the while the hydraulic was milky....at the time I though it was air.... Well the first single digit day here proved that wrong. No pressure at all. It was frozen..... ...next warm day it was fine.

Seeing as the machine will be sitting for the winter I assume it is best to get it out now as without it getting hot it will never go away.

I have researched a little on the matter and it seems that adding methanol to the oil (1 quart I have read) should do the trick...followed by draining it three times. At 17 gal capacity and $6 a gallon I am looking at $306 just for that and a world of mess.

Is this the best and only approach? Other ideas include having someone come out and pump her clean with the proper machine (if I can find someone to do it around here) or put in water absorbing filters (where to purchase them I have no clue).

Any thoughts as to the best approach?

Also if I am going to drain her where is the best place to drain her from.?

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ChrisB

12-12-2007 08:46:14




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 Re: JD 410 Water in hydraulic fluid in reply to ChrisB, 12-08-2007 13:02:55  
Thomas,

Sounds like a good plan. I might try that. If it does not come out that clean I can always burn it.



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Thomas R. Spivak

12-11-2007 14:52:48




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 Re: JD 410 Water in hydraulic fluid in reply to ChrisB, 12-08-2007 13:02:55  
Just a note on this, I had the same problem in a IH 500 dozer, I drained all I could get out, refilled, put the drained stuff in a drum ( the kind that grease comes in) after a few months the stuff in the drum separated and I then drained again and put the old stuff in. I was'nt using the machine much and after I did this a couple times the oil is now clear. The water absorbing filters only hold as much as the size they are and I'll bet there's a lot of water in it. On my 500 a third of what came out the first time separated into water.
This will cut the cost of the oil until you get it clear and put new oil in.

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ChrisB

12-11-2007 12:34:16




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 Re: JD 410 Water in hydraulic fluid in reply to ChrisB, 12-08-2007 13:02:55  
Thanks Roy,

I see your reasoning there. I have no indoor place so the bullet heater will have to do.
BTW you did help me an awful lot on the Hydro leak I had on this machine. I wanted to reply with my findings but cannot on this new forum.

Well I went through just about every high pressure device. Cleaned, tested, etc.
Turns out the high pressure was leaking back into the transmission. There was a high pressure leak from a high pressure line (in the transmission casting) that was running inside the side of the transmission. The transmission cover gasket was suppose to seal it. Well that and a missing o-ring. (no mention of it in the manual at all).

Best I figure it was for a hydraulic side PTO if the backhoe had been a farm tractor. must of had 80 hours looking for that leak. Couple hundred in gaskets and fluid and probably 20% of my hair.

At least it is fixed.

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ChrisB

12-10-2007 09:43:36




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 Re: JD 410 Water in hydraulic fluid in reply to Old Magnet, 12-08-2007 13:02:55  
Roy,

As always thanks for the help. I assume it would be best to do this before she sits most of the winter.
How important is it to work the machine to get the oil warm? Ground frozen here already and not much work I can do with it now.
Thanks,

Chris



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Roy Suomi

12-10-2007 15:20:42




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 Re: JD 410 Water in hydraulic fluid in reply to ChrisB, 12-10-2007 09:43:36  
I wouldn't be real concerned about warming the machine up by running it, as much as getting that goop out of it..Running it will keep the goo thoroughly mixed..Maybe just drain off the very bottom of the trans case to get any separated water out when you crack open the drain plugs..Maybe drain a quart or so will get any accumulated , separated water out before starting it up..Then try the last post to remove the brunt of the contaminated oil..Can you get it inside to warm it up any?? It would probably help so the water isn't frozen in the bottom of the reservoir..Maybe a torpedo heater and tarp or plywood to keep the heat concentrated under the machine..Good luck..

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Roy Suomi

12-09-2007 17:32:55




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 Re: JD 410 Water in hydraulic fluid in reply to ChrisB, 12-08-2007 13:02:55  
Just change out the oil and filters a couple of times..I wouldn't add any methanol due to not knowing what effect it had on clutches and brakes and their glues and binders..I start by raising anything that will raise . Then drain the trans case [both plugs].After most all the oil has drained , lower the functions to the ground..This will expell most of the contaminated fluids back to the trans case and will get drained out from there..Refill and change the filter and run it again..Each time you do this , It'll get more clear..I've seen them so bad that it broke the transmission filter thru-bolt because the filter relief valve was frozen shut and overpressured the filter..

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