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John Deere Tractors Discussion Forum
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hey wayne in TN need help

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andrew

10-29-2003 21:35:47




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Wayne I have a 420 t. 3 point hitch has plenty of power but control lever will not stay put. it constantly moves up no matter what. I end up having to use a stop to control level. A buddy of mine claims it may be that the load level contol is not set correctly. I assume that is the purpose of the large spring connected to the control lever on the back side with a small ball joint. Is there a possible adjustment that im missing.

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Henry J

10-30-2003 09:29:29




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 Re: hey wayne in TN need help in reply to andrew, 10-29-2003 21:35:47  
Andrew

I got the sme deal on my 420 and have the tom locked in the dual mode (one lever tied up). A year or so ago when this was discussed, it was recommended that I try to lock out the depth control. I did and plan to always leave it locked out since I do not own a plow. The situation did not change. My hyd lever is of the feather touch like Wayne explained. I personally think that the answer will be the friction disks when I work my way around to overhuling the touch o matic. Let us know if you put the friction disks in and that cures the problem.

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Wayne in Tn.

10-30-2003 06:05:21




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 Re: hey wayne in TN need help in reply to andrew, 10-29-2003 21:35:47  
Andrew, I have had them do that. Your buddy may be right, the depth control adjustment may be causing it. Try making the adjustment rod a little shorter, or if you don't need the depth control, you can lock it out, by turning out the big bolt just under the big spring. Turn it out until it sits aganist the arm. Also some models have a small spring that attaches to a tab at the quadrant and hooks to the linkage. Check to see if it is missing. If you don't have a manual, e-mail me and I will send you a diagram showing the adjustment and this small spring.

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Wayne,,afterthought....

10-30-2003 09:00:02




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 Re: Re: hey wayne in TN need help in reply to Wayne in Tn., 10-30-2003 06:05:21  
Andrew, another thought, if the control levers are real easy to move up and down, you may need to replace the 3 friction discs in the quadrant. Those levers are supposed to have a good bit of (drag) on them. If yours can be operated with a (feather) touch, such as between the thumb and forefinger, then they do not have enough friction on them to keep them in place. These discs can be replaced without going into the lift unit, just be careful not to pull the shafts out of the housing, or you will have to do a tear-down to get them back in place. The discs are available from Deere, reasonable. Another thing, if you are using the tractor with modern 3-point type equipment, then you should have the lift set in the dual-mode, and leave the inside control lever pinned UP, and only use the outside lever for equipment operation.

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