4100 power steering: John Deere Review  -- John Deere Tractors Discussion Forum and Review 4100 power steering: John Deere Review -- John Deere Tractors Discussion Forum

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 06-14-2001, 19:51 Post: 29285
Jim Bowen



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 4100 power steering

I purchased a John Deere 4100 with mid muching mower, loader, etc. I love the 4100, however, there is a steering problem. The first year, I noticed that the power steering hung up and was somewhat lost when accelerating and mowing. I called the dealer and they explained that this is normal. This year, it became worse in that I often had to muscle the steering because of loss of power when trimming around trees etc. The end result was that I was mowing one day next to the road and found that I was going into the ditch. I continued to turn my steering wheel without the front wheels reacting. Figuring that this is not normal, I sent the 4100 back to the dealer under warrantee. They checked with the factory and changed the power steering unit returning the unit after 3 weeks. I tested it and found that the wheels would follow the steering wheel but but you would still lose power steering when turning while mowing. They agreed there was some problem and they "might have to "borrow some test equipment" to check it out. I am not sure they know what to do. Any ideas would be appreciated since the 4100 is a great machine in my opinion and I believe my problem is rare. Any ideas out there?






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 06-15-2001, 00:54 Post: 29298
Jim Youtz



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 4100 power steering

I have no idea what the problem is, but my 4100 does not act this way at all. Don't let anyone tell you there's no problem.






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 06-15-2001, 06:50 Post: 29301
TomG

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 4100 power steering

I remember a discussion here some months back. A person with a JD (don't remember which one) was lifting heavy loads with a loader. He mentioned incidentally that the load was so heavy that there was no PS. I didn't understand why. As it turned out, the JD design uses a separate pump for the steering. Under very heavy loads, there is a way the steering and hydraulic pumps are hooked in parallel to increase lifting speed. Under this condition, there is no PS. That could be the explanation if the 4100 has the same design, and the mower is very heavy. However, it sounds like there is loss of PS during mowing. There shouldn't be much weight on the 3ph when the mower in on the ground.






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 06-15-2001, 16:32 Post: 29319
Jim Bowen



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 4100 power steering

Thanks fellows. I'll see what they come up with this time and try a different dealer if it still isn't corrected. I am of the opinion that steering function should have priority in the scheme of things.






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 06-16-2001, 05:48 Post: 29326
TomG

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 4100 power steering

That's the logic I have as well. In fact, many tractors that use a single hydraulic pump have a priority valve that divides oil between remote and steering. It gives priority to the steering. I guess the JD design logic is that a tractor most likely isn't turning when the hydraulics are being operated near the system relief pressure. I guess all designs involve trade-offs. Some people would welcome extra speed during heavy lifts. I don't know if this JD design is your problem though.






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 06-19-2001, 15:52 Post: 29428
Jim Bowen



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 4100 power steering

Just an update. They borrowed test equipment to check pressures, replaced the steering priority valves, and couldn't get the power steering pressure high enough. So now they'll replace the power steering pump.

Their theory is that a weak pump caused me to have to muscle the steering until ruining the steering power unit.






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 06-20-2001, 06:27 Post: 29440
TomG

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 4100 power steering

I used to muscle my PS. The steering column was loose, and the steering became easier after the column was tightened. Before the repair, I got in the habit of lifting the front end with the loader bucket to straighten out the wheels rather than muscling the steering. It's still a handy technique when I manage to do things like get crossways in a shallow excavation. Happy to hear the dealer is sorting out the problem.






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 06-28-2001, 11:40 Post: 29672
Jim Bowen



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 4100 power steering

Dealer has now replaced the power steering unit after ordering the wrong part. Pressures are now fine but steering still grabs and loses power. They are working with the factory and say that they have to disassemble the whole hydro system to find what is wrong.

They did bring me a 445 with a 60" deck to mow with until the 4100 is repaired.






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 07-05-2001, 10:25 Post: 29832
DRankin



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 4100 power steering

I was looking at the JD 4000 series sales brochure last night and i noticed that the total hydraulic flow stats are much lower on the 4100 HST model as compard to the Gear model. I can get the numbers and post them if you wish. Does anyone think that this lower total flow is contributing to the problem? MH






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 07-05-2001, 23:57 Post: 29848
Roger L.



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 4100 power steering

Jim, thank you for posting your continuing efforts at getting the problem fixed. I've got to say that you have quite a bit of both patience and faith in this dealer. That is nice to see. As far as I can remember, this problem hasn't cropped up with the 4100 before, so they may end up swapping out whole systems in order to fix it. Mark noted that there isn't much reserve flow in this model. So any deficiency is likely to be noticeable.






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Discussion Boards > Active Subjects > Messages as Posted > John Deere Review Forum

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DRankin 2 | Jim Bowen 7 | Jim Youtz 1 | Roger L. 1 | TomG 3 |




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