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How Draft Control Works

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hope farmer

04-19-2005 18:11:42

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We have a New Holland Ford 4630 turbo with draft control. The owner's manual is not real clear as to how the draft control works and how it is adjusted. I think it has something to do with the amount of pressure that is applied to the implement or helps keep the implement at the desired depth but I'm not sure. Can someone explain it to me. Thanks.

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Rod F.

04-19-2005 20:04:16

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Re: How Draft Control Works in reply to hope farmer, 04-19-2005 18:11:42

The Ford 30 series tractors allow you to blend draft a position control to some degree. The outer lever is the position lever, which you would normally use to set the height of the lift arms. The inner lever, closest the seat is the draft control lever. When the draft lever is in the full down position, then the system is in position mode. As the draft lever is raised, then the system starts to blend draft control, and you eventually start to notice the arms raise (assuming that the position lever was fully down and the arms lowered). When the draft lever is fully raised, the arms will be fully raised, REGARDLESS of the location of the position control lever. Esentially, when using a moldboard plow with this system, the draft control lever will be located slightly above the midpoint of it's travel. Just play with it, and you should find the correct sensitivity for what you're doing. Basically, this is a variable sensitivity system. It performs the same function as what Bob has described below. HTH.

Rod

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RJR

04-19-2005 19:27:29

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Re: How Draft Control Works in reply to hope farmer, 04-19-2005 18:11:42

There is a thread on teh 9N,2N&8N Discussion Board from August 25, 2004 titled Draft/Position Control Mode(s) Explanation which explains it very well.

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Bob

04-19-2005 18:35:25

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Re: How Draft Control Works in reply to hope farmer, 04-19-2005 18:11:42

In general, when using a ground-engaging implement such as a plow, draft contol will vary the depth of the implement, to limit the amount of "draft" or pull required to draw the implement through the soil.

So when the plow is pulled through a tough, hard or wet spot, the draft control will sense the increased load on the tractor and begin lifting the implement to a shallower working depth.

Besides lessening the "draft" by raising the implement, the act of raising the implement causes downward pressure on the rear wheels, which lessens the chance of them spinning.

As the implement passes the tough spot, reduced draft is sensed, and the system returns the implement to the previous working depth.

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FarmerDave

04-19-2005 20:25:47

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Re: How Draft Control Works in reply to Bob, 04-19-2005 18:35:25

Should I use it with the bushhog which is probably a little oversized?

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Majorman

04-20-2005 00:36:46

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Re: How Draft Control Works in reply to FarmerDave, 04-19-2005 20:25:47

No. Use position control. Draft control is for soil engaging implements, position control is for implements that work above the soil.

On your tractor working in draft control, you can use the position control lever to limit the amount the implement goes into the ground. Very useful in light sandy soils.

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Joe Evans

04-19-2005 19:39:08

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Re: How Draft Control Works in reply to Bob, 04-19-2005 18:35:25

Excellent explanation.

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