Draft Control Adjustment
- Thread starter edmartin
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Draft controls have always been mysterious to me. I have read considerable about them but confess I don't fully understand them. I had an old Ford Jubilee with draft control, never figured out how to usefully use it. Have read several posts on different forums about the Yanmar draft controls. Seems they were mainly for use with rice tillers. Also seems they operated off either a cable or rod that moved as the tiller moved which in turn operated the control mechanism on the tractor causing it to go up or down. My 2002d has a draft control handle which I only use to slow down drop speed on the 3 point. There is linkage under the seat area that ends up with a pin out on the end that was intended for something to hook up too. If I manually move that pin the lift will move. Don't know if the 2000 has that or not. Haven't really said anything to help but don't think I've hurt you either. I'll be interested to hear others knowledge on this subject.
C
careyo63
Guest
On a Ym 2000 which I have also Up or Down is set by how far or which way you move the handle there is a knob that you screw into the slide/Gap were you lock it is where your handle stops so it won't move lower or higher than that point. 
and the screw with the pin on mine just bleeds off the valve to let the lift fall in hence Counter clock wise the further back you turn it the lift falls easier/faster mover it forward is higher it the lift goes. After I serviced my fluid and had to replace my ghetto rigged pickup screen it sets perfect straight up.look hard you can see it on the left side of the valve.
I'm rained in :laughing:
Carey
and the screw with the pin on mine just bleeds off the valve to let the lift fall in hence Counter clock wise the further back you turn it the lift falls easier/faster mover it forward is higher it the lift goes. After I serviced my fluid and had to replace my ghetto rigged pickup screen it sets perfect straight up.look hard you can see it on the left side of the valve.I'm rained in :laughing:
Carey
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![Tractor%20pics.%20002[1].jpg](/forums/data/attachments/142/142138-adbd65f1f42a2dd001ab6e062a7d3bb2.jpg)
jesnic
Bronze Member
On my 1500D it is the same as yours, Carey. But there is a lever with a tab under the left seat support. The lever is pulled out and slid forward to engage a different hole that allows draft of the lift. It is pressure sensative. Where you leave the lift lever to the height of your attachment, the control valve will sense the pressure on the small shaft (where the spring is located in Carey's pic) and maintain the pressure to keep the implement at the optimal hydraulic pressure. It does not mean that it will maintain the same depth. I got this out of the manual. I have used it for setting the tater plow and digging trenches. The little lever with the rubber tube over it slows or hastens the lift to drop. Of course, I could be way out in left field.
normde2001
Elite Member
- Joined
- Mar 10, 2002
- Messages
- 4,159
The Ym2000 does not have draft control. Exactly what are you trying to do?
Mickey_Fx
Veteran Member
That second control lever one typ associates with a draft control doesn't function as a normal draft control which attempts to control implement depth by sensing change in force exerted on the 3pt links.
On the Yanmar's I'm familiar with, this control attempts to do the same thing in a different way and only for yanmar tillers set up to work with the UFO controls. There is a arm near the upper 3pt arms and it is linked to the tiller's drag via cable and some linkage. The draft attemps to control the tiller depth by associating the angle of the drag with tiller depth.
From several others that are much more in the know than I am, I've been told I'm the only one they know of that has ever hooked up the UFO controls to control tiller depth and side-side angle of the tiller.
See pics. 1st shows the arm associated with the draft control. There is a cable attached which runs back to the tiller. From there, pic 2, there is some linkage to the drag.
When connected, I can manually lift/lower the drag by hand and the 3pt reacts by either lifting or lowering the 3pt arms.
On the Yanmar's I'm familiar with, this control attempts to do the same thing in a different way and only for yanmar tillers set up to work with the UFO controls. There is a arm near the upper 3pt arms and it is linked to the tiller's drag via cable and some linkage. The draft attemps to control the tiller depth by associating the angle of the drag with tiller depth.
From several others that are much more in the know than I am, I've been told I'm the only one they know of that has ever hooked up the UFO controls to control tiller depth and side-side angle of the tiller.
See pics. 1st shows the arm associated with the draft control. There is a cable attached which runs back to the tiller. From there, pic 2, there is some linkage to the drag.
When connected, I can manually lift/lower the drag by hand and the 3pt reacts by either lifting or lowering the 3pt arms.
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normde2001
Elite Member
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ain't no draft control on a 2000
C
careyo63
Guest
I bet the OP knows Now What not to call his 3PT.Lift :laughing: I even learned something new on how the Draft is set up like on a Yanmar.
Carey
Carey
Hang in there Normde! I'm on your side. Mickey, excellent pictures explaining the Yanmar draft control. My 2002d place to hook the cable up is on the right side. I've no intention of hooking it up but you have helped me confirm what it is.
jesnic
Bronze Member
The draft control on my 1500D is controlled by the lever. Just pull it out and slide in back in the other hole and it rides on a concentric cam the measures hydraulic pressure and makes adjustments to the lift. The adjustments are so small, you probably would never see it.
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jesnic
Bronze Member
Hey Mickey, what is the small 1/4" rod sticking out horizontally under the cable? It appears to be the opposing end of the lever attached to the cable? If so, is the draft manually adjustable to presets for other implements?
California
Super Star Member
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- Jan 22, 2004
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- An hour north of San Francisco
- Tractor
- Yanmar YM240 Yanmar YM186D
YM2000 has Position Control which raises the 3-point automatically if it leaks down. It doesn't have Draft Control like a Ford or Massey, which I think is designed to lift a plow when it is making too much drag.
YM2000 has a linkage like in Jesnic's picture, except with two separate holes. The manual (YM240) says don't move it to the other hole. Look at his second photo above: if the 3-point arm drifts down, the rod linkage pushes on that button coming out of the hydraulic control the same as if you had tugged on the 'raise' lever on the right side of the seat.
YM2000 has a linkage like in Jesnic's picture, except with two separate holes. The manual (YM240) says don't move it to the other hole. Look at his second photo above: if the 3-point arm drifts down, the rod linkage pushes on that button coming out of the hydraulic control the same as if you had tugged on the 'raise' lever on the right side of the seat.
C
careyo63
Guest
I'm with California:laughing: And Normy Thats correct my 2000 is set up Identical. Never messed with it And I believe my thinking was it was a stop wich pushes the lever forward in turn holds pack the finger stopping the lifting.
Carey
Carey
jesnic
Bronze Member
Is it possible that the YM2000 has an internal cam attached to the valve so that the lift arms will raise or lower with pressure or lack of? Same as mine, but everything is internal in the valve. Just thinking here.
Wow, I didn't intend to start any arguments.
First, to everyone who replied trying to help, thank you.
Second, I apologize Normde for using the wrong terminology. I am familiar with draft control and was told by an employee where I purchase parts that this was draft control. All I was trying to do was ensure that whatever this is was properly adjusted and functioning.
Third, Carey I do know the difference between my three point lift and whatever this is. And you're correct, I'll be much more carefull with any future questions.
First, to everyone who replied trying to help, thank you.
Second, I apologize Normde for using the wrong terminology. I am familiar with draft control and was told by an employee where I purchase parts that this was draft control. All I was trying to do was ensure that whatever this is was properly adjusted and functioning.
Third, Carey I do know the difference between my three point lift and whatever this is. And you're correct, I'll be much more carefull with any future questions.
Mickey_Fx
Veteran Member
I'm assuming you're talking about the 2nd pic. The rod transfers the movement of the drag back up through the cable to the arm near the upper 3pt arms. The draft control, the lever next to the 3pt lift control, does set the sensitivity, or the position of that upper arm to determine where the neutral point is. The drag via the linkage will set the position of the arm so as the drag moves up/dn it changes position of the arm thus determine if the 3pt arms need to move up/dn or not.
I've not found any other use of the control. Would think it quite difficult for this design to control the depth of something like a plow.
Hope that answers your question.
