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Subject: Hydraulic Control Lever

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Steve Pfost    Posted 05-26-2019 at 22:14:57 [URL] [DELETE]        [Reply] [Email]  
  • Hydraulic Control Lever
  • The hydraulic control lever on my 9n doesnít seem to be right. It only adjusts the hitch up or down after I move it nearly three quarters down in the bracket. Once there I have to be very subtle in my adjustments otherwise the implement will be on the ground or will start to raise again. Does that wording make sense? I suppose itís hard to explain. The lever seems to be very loose and nothing happens to the 3pt until itís nearly all the way down. What is possibly wrong and how can I fix that?

    K.LaRue-VA    Posted 05-26-2019 at 22:49:09 [URL] [DELETE]        [Reply] [No Email]  
  • Re: Hydraulic Control Lever
  • The operation you describe is completely normal for a 9N/2N tractor. With the touch control lever all the way up, the lift goes all the way up to travel between fields. When you are ready to plow start moving the lever down and after about 1" the plow drops to the ground. From the point where the plow dropped to the ground, continuing to move the touch control lever down controls how deep the plow runs. A stop plate and wing nut are used in the slot to "set" the depth you want to use so the touch control is lowered to the same spot for each furrow.

    If the touch control lever moved up and down freely, there should be a spring under the nut that holds the lever in place. Tighten the nut, more spring tension, so friction holds the lever in place. Eventually that assembly has to be taken apart to replace the cork disk.

    If you want the lift to stay about 1/2 way up when you move the touch control to the mid point, that is called "position control". You need to get an 8N or newer tractor to have position control.

    Steve Pfost    Posted 05-26-2019 at 23:05:47 [URL] [DELETE]        [Reply] [Email]  
  • Re: Hydraulic Cylinder Control Lever
  • Iíll have to check in the morning again however the plow doesnít start to move down until the lever reaches 4-6in from the top. Then I have about 2 in of wiggle room where if I move the lever up and down the implement moves up and down.

    K.LaRue-VA    Posted 05-26-2019 at 23:32:08 [URL] [DELETE]        [Reply] [No Email]  
  • Re: Hydraulic Cylinder Control Lever
  • The lift should drop when the lever is moved to between 2-5/8 to 2-3/4". Try adjusting the quadrant. Here's the procedure from page 90 of the FO-4 manual.

    Steve Pfost    Posted 06-03-2019 at 09:17:12 [URL] [DELETE]        [Reply] [Email]  
  • Re: Hydraulic Cylinder Control Lever
  • Hi again. So Iím back troubleshooting this. I drained the milky hydraulic fluid and removed the inspection plate with dipstick. When I drop the control lever down there is zero resistance and even the control linkage inside doesnít move or hit resistance until the lever reached about maybe 1 1/2- 2 in from the bottom of the lever guide. Iím trying to understand the motion these items go through to figure out if something is stick and where that something may be. Looking at the shop manual could it be the exhaust control valve or intake intro valve? I suppose another question to help this is When the lever moves down where should it be hitting itís resistance? Or is it that the friction pad or something on the exterior is not correct? Before a novice like myself start thinking with the wrong items I figured I would ask for some trouble shooting. I received the tractor like this so I have no idea how long itís been like this.

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