4200 3 Point raising to far?: John Deere Review  -- John Deere Tractors Discussion Forum and Review 4200 3 Point raising to far?: John Deere Review -- John Deere Tractors Discussion Forum

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 06-23-2004, 13:59 Post: 89216
landerson@les.com



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 4200 3 Point raising to far?

I have a 1998 4200 HST and all of a sudden if I raise the three point as far as it will go (loaded or unloaded) it bogs down the tractor as though it is trying to raise the 3 point past the top....The hydraulic motor is bogging down the tractor. Is there a setting that got misaligned that is supposed to tell the three point to stop raising when it gets to a certain level?






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 06-23-2004, 16:54 Post: 89234
kwschumm



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 4200 3 Point raising to far?

The 4310 has an adjustment for this, maybe your 4200 adjustment is similar. Looking at the rear of the tractor do you see a threaded rod with two nuts on either side of a bracket near the left rockshaft arm? If so, this is the adjustment for how high the rockshaft adjusts. You can loosen the nuts and play with it, although if I were you I'd do it in a disciplined fashion - you know, screw them outward one full turn, test, repeat. If you track how far you turn them you can return them to the original position if need be. If these are out of adjustment they can bog the machine down as you describe.






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 06-23-2004, 17:22 Post: 89239
kwschumm



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 4200 3 Point raising to far?

By the way, the rockshaft only rotates 90 degrees so if you adjust it so top of travel is lower it will drop lower too. I don't remember which way to adjust it to go higher and lower so just play with both directions until you get the desired results. You can do this adjustment with the engine running, but if it starts bogging don't let it run that way for long.






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 06-28-2004, 14:53 Post: 89538
landerson@les.com



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 4200 3 Point raising to far?

I atttemped to adjust the bar as you stated in your previous message and it did not affect the height of the 3 point at all....Could there possibly be a bad sensor somewhere?






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 06-28-2004, 15:15 Post: 89541
kwschumm



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 4200 3 Point raising to far?

If the 4200 is the same as a 4210 (I suspect it is but am NOT sure) that is the only rockshaft lift adjustment available. Rockshaft position sensing is done by a second spool internal to the rockshaft control valve assembly. It may be time to call the dealer.






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 06-29-2004, 04:19 Post: 89594
TomG

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 4200 3 Point raising to far?

A general way to make an adjustment on a conventional position control hitch is as follows. The actual procedure may be different and it's not intended as a do it yourself recipe.

Disconnect the linkage from the control arm and move it into the lower mode. Then, with the tractor running and observing safety procedures (you are standing and working beside a running tractor that can get bumped into gear or drop attachments etc.). Raise the hitch manually until the hitch is against its mechanical stops and the relief valve opens. Move the control arm until the hitch goes into neutral. Reattach the linkage and back off the adjustment a bit more to provide a safety margin. Backing off the adjustment should put the hitch into neutral earlier and have the effect of reducing its max height as Ken mentioned.

If that sort of procedure doesn't work then the linkage may be worn or bent or the lift spool or poppet valve may be damaged. Minor disassembly on some tractors allows inspection of the valve heads and internal control arm. A manual or dealer is needed to go much further.






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

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kwschumm 3 | landerson@les.com 2 | TomG 1 |




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