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Tractor Talk Discussion Forum

J.D. 4010 steering problem.

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gordon smith

06-25-2006 05:39:27




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I have a 61 4010D with continuous steering trouble. Last year while planting corn the power steering on my 4010 started acting up, binding when turning left. I bought a rebuilt assembly out of midwest and installed it. It was newer style and I plumbed it up correctly also installing a bleed back line to the reservoir. It didn't work, still binding up. Sent the tractor to JD dealer who removed and rebuilt assembly, telling me it was out of a newer tractor. The steering worked fine haying the rest of the year probably 80 hours. I planted the corn again this spring, no problems. I put on the saddle tanks to sidedress the corn with a 3 point knife setup and after about 8 hours the binding is back. Took the rig off and the tractor is sitting waiting to go back to the dealer. When the dealer rebuilt the box last summer he told me the mechanic found small pieces of metal in the box didn't know from what. The hyd filter looked clean and the oil also,it was changed twice in the interim. The brakes are good ant tranny is nice and tight, it seems when you begin to use hitch and SCV this problem surfaces. I want to fix this problem this time for good. I know this is an old tractor but is in real nice shape powertrain wise,nice paint and rubber, 12 volt alt, and the rear differential was updated to a 30 series about 15 years ago. I only grow 200 acres of corn so it's not like it's being worked to death. I asked my dealer if it could be the supply pump in the tranny or some other hyd pressure problem and they didn't know. I've owned the tractor for 22 years and don't want to get rid of it because of this problem. Can anyone out help on this one?

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Glen in TX

06-25-2006 12:41:27




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 Re: J.D. 4010 steering problem. in reply to gordon smith, 06-25-2006 05:39:27  
Pull the suction screen on internal trans pump and check for metal filings or brake material on the screen. Run pressure tests on the pumps also. Not much telling where the metal they found earlier came from? Could be a spring had a coil break off for some reason? The pressure control valve has a barrel and spring in it and what it does is insure pressure to steering and brakes when remotes or rockshaft are used. Could be also be a bad steering motor. Sounds the dealer missed something before and you need the whole tractor in their shop so things can be flushed and pressure checks done. Or maybe someone else with more experience needs to fix the steering valve this time.

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gordon smith

06-25-2006 13:29:58




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 Re: J.D. 4010 steering problem. in reply to Glen in TX, 06-25-2006 12:41:27  
Glen, I started the tractor up about half an hour ago. Steering would still only turn left and when I let 3 pt. down, it wouldn't pick up. I shut it off and tried a couple minutes later and it jerked it's way up in about 6 starts and stops, not like the way these old tractors usually rattle the hitches up after they've sat overnight. This was definitely not getting a good supply of oil, the way it picked up.

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Glen in TX

06-25-2006 14:10:45




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 Re: J.D. 4010 steering problem. in reply to gordon smith, 06-25-2006 13:29:58  
You'll have to drain the oil when trying to clean or inspect that primary pump screen in trans and then can see condition of oil too. Was it full of oil? If oil is milky or got water in it you're going to have problems too. If the steering or brakes go away or work hard when you use remotes or rockshaft something may be wrong with that PCV pressure control valve. It does sound like a oil supply or oil problem when everything has problems working. You can view the parts catalog (at left click on parts catalog and enter 4010) at JD parts online to get a better idea of what is in there if you haven't seen that yet.

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Bob

06-25-2006 09:15:24




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 Re: J.D. 4010 steering problem. in reply to gordon smith, 06-25-2006 05:39:27  
Have you rebuilt the unit under the dash, or the steering motor unit up front under the fuel tankk, or BOTH?



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gordon smith

06-25-2006 10:02:17




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 Re: J.D. 4010 steering problem. in reply to Bob, 06-25-2006 09:15:24  
The unit under dash was rebuilt.



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Bob

06-25-2006 11:05:24




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 Re: J.D. 4010 steering problem. in reply to gordon smith, 06-25-2006 10:02:17  
Better have a look inside the front "motor" unit.

It may be the source of the binding AND the metal you are getting in the valve unit.



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the tractor vet

06-25-2006 07:51:36




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 Re: J.D. 4010 steering problem. in reply to gordon smith, 06-25-2006 05:39:27  
Boy that sounds like the old 4010 that a buddys dad had , now i am no expert on the deeres but there problem started when a bearing went bad in the transmission and they had that tractor apart somany times even down to the point that they had it down to bare cases and cleand every inch of the insides and all lines new Hyd. pump , new steering and it worked fine for awhile then it started again and it was that way when he died and it was sold at the sale. It does not take much to screw up a hyd. system .

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Allan In NE

06-25-2006 06:12:20




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 Re: J.D. 4010 steering problem. in reply to gordon smith, 06-25-2006 05:39:27  
Gordon,

I don't anything about your tractor, but I think you're on the right track. That just "smells" like a hydraulic problem somewhere.

Especially, since the problem seems to come in when the other systems are being put into the picture.

I'd go with my hunch if I were you.

Allan



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