Stupid three point question.

[WhiteHalftrack]

On my MF40, my three point has two levers on the right side. One says lift and the other is draft. I understand the lift, but what is the draft doing for me. I have moved it back and forth and it seems to just run the three point lift up and down. Would someone tell me what the heck this is for?

Jason

 

[msb]

Set it for the sensitivity you want for your 3 pt. implement. None if you simply want to manitain a position regardless of the draft load. Probably right in the middle for a mounted plow operation.

 

[TonyinMass]

Draft is just for plowing, to keep the depth level and equal, whatever, it replaced the old Ferguson 'senser'? having to do with the spring on the top link of 9n's and such, I can't explain it as well as some one on here will shortly I hope. I am having trouble posting a new question on here- is it me? tony

 

[jogl]

When you are using position control the tractor tries to hold the 3ph in a constant position regardless of how much force it takes.

When you use draft control the tractor tries to maintain constant lifting force on the 3ph regardless of what position it is in.

Hope that helps,
JP.

 

[Jeff-oh]

It may be worth investing in a manual. The quadramatic control sets both draft control functions and position control sensitivity.

 

[Anonymous-0]

Draft is only useful when plowing. It raises or lowers the plow depending on the drag of the dirt to work on keeping the load constant on the tractor as the dirt changes going across a field. With the plow in the ground you can use a combination of position and draft to reduce that action.

Gerald J.

 

[Anonymous-0]

Draft assumes that you want to plow at some depth. It also assumes that if the plow 'pulls' harder, it is digging harder and needs to be lifted. If it pulls easier, it needs to be lowered. If you go over gently rolling land the plow will dig when you start up a slope and rise out of the ground. Draft corrects both, trying to keep the plow in the ground. It also can even out the load on the tractor by plowing less deep in hard soil and deeper in softer soil.

Draft 'senses' the load by how hard it pulls against a spring on the toplink (the reason there's a rubber boot around the toplink clevis). This means it senses the horizontal load (draft) and the vertical load. On modern tractors, it just sense the horizontal load using load cells on the draw arms. But the fact it senses vertical moment means you can play with this with a boom. Set the position, draft, and response to different settings and vary the load on the boom. You'll figure it out.

Mark

 

[WhiteHalftrack]

Thanks everyone for the help. It does make sense now.

Jason

 

[Peter Richardson]

there is a MF 3 point link yoke that fits to top link and lower arms with a chain that fits underneath you trailer draw bar. Set up correctly, this senses when your rear wheels start to dig in (like when ploughing) and lifts at your trailer towbar to gain traction. These have the Ferguson badge on them. I have seen 5 of these in different situations and they really work good. This coupled with the ground speed PTO to your trailer axle (if your trailer axle has "drive") will get you places with a big load, you never thought you'd go. Indipendant brakes are needed for steering while using this to its full potential.