You can also pickup a "set" amount of material and pull it as far as you need to. I find I can control the amount I am "digging in" much easier that way. I almost always use draft control when I am grading. Or at least that is true with my unweighted rear wheels. You can set the drag so high that the N will either stall or slip the wheels. Then as you move the control lever father down you are setting the drag or draft to be harder, thus the depth or draft deeper. If you hit hard soil you do NOT have to readjust the implement height to keep from stalling or spinning the wheels. This is the genious of Fregusen's design. When you drive forward the hydraulic system will continually adjust itself to maintain the setting you have set. This is the lightest, or shallowest, draft setting you can acheive. If you carefully move the control lever, from full up, down very slowly, you will reach a point where the implement will slowly drop. In the down postion, the touch control lever sets the "draft" you want for the implement you are using. Thus with draft control the implement is either full up - transport position - or full down - in working position. Where as draft control sets the amount of drag - or depth of a plow. Position control allows you to set, and keep set, the height of an implement anywhere within the lift range from full up to full down. In uneven ground, varying soil conditions, the farmer had to readjust the plow as he went along, NOT an easy task. Until Ferguson's hydraulic control design came along, maintaining a constant depth, consistant with the pulling ability of the tractor was a constant fight for the farmer. Once the top cover is removed you will be able to remove the clevis pin that attaches the plunger to the upper fork, remove the three bolts securing the lift spring seat support, support plate. Both seem appropiate for the task of plowing where you have both a pulling load and a depth you are trying to maintain. The best solution is to remove the top cover after disconnecting the top link rocker,and the control valve at the bottom of the lower fork assembly. Another meaning is the amount of load when pulling. One comes from the nautical usage for the depth of the water needed to float a boat. Make sure you use a new gasket under the top cover. After rebuilding the control spring assembly, reassemble the top cover and reinstall. The two piece assembly can be replaced with the single piece version. Let's start with the term draft which has several old meanings. The Ferguson version is two pieces while the Ford version is a single piece. Re: 8N Ford Position and Draft Control in reply to Clarence Johnston, 10-02-2000 16:20:49
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