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Adjusting a plough

5

550Doug

Member
Location
Southern Ontario
I'm trying some ploughing with a MF 43 2 furrow 3pth, and am having trouble getting the front bottom to cut a proper width. I thought I had it levelled properly before going into the garden but it will not cut wide enough on the front furrow. I've adjusted the 3pth lift arm, I've tried lifting and lowering the rear of the plough, and also turned the 2 pt arm on the plough that attaches to the 3 pt arms. It looks to me that I may need a sway bar to hold it in place but I always thought sway bars were not necessary for a 3pth plough.
Any ideas?
 
Are your wheels set proper?
Wheels too wide or narrow
changes the front bottom cut
on 3pt plows
 
On some plows, the 3 point bar on tbe
plow can be adusted sideways. That might
help, but your wheels also need to be at
the correct width.
 
Wheels are good.
When I lift the plough, no wheels in a furrow, the plough sits nicely centered behind the tractor. But when I get into a furrow and drop the plough, it just swings towards the right and the front cut is maybe 6 inches. The rear bottom cuts a nice furrow.
 
You are right, you shouldn't need sway bars for a mounted plough. How does your plough follow your tractor? If everything is in adjustment, your plough (when in the ground) should follow the tractor 'centrally' ie with your top link pointing straight backwards, not to one side or the other. If that's the case and you can't get your front furrow wide enough, your tractor wheels are set too narrow. If your plough is trying to push towards the ploughed land all the time, then the problem is with the plough. Does the 'cranked' cross shaft have an angle adjustment on it? From Google images, it looks like the MF43 does have a 'cranked' cross shaft with a vertical adjustment lever - this will give you some adjustment of the alignment of the plough. Is one of the legs twisted? All are possibilities! Hope you get it ironed out. Jim
 
I'd also check and make sure both of your bottoms have the same plow points that match the width the plow is set up for. I had a JD plow that had 2 different points on it. Once I got that figured out and cut the long one to match the short one and adjusted the plow to match the width of cut for the 12" ones it worked a lot better. IIRC On this JD plow you can flip beams around to adjust for width of cut between the 2 bottoms.
 
All 3pt plows have a means of adjusting the lead of the plow. The ones with a round draft bar usually have
one end offset from the center of the bar, creating an eccentric' They have clamps or a lever to rotate the bar to steer the
plow. Standing on the RH side of plow, facing the draft bar you will need to rotate it clockwise to make
the plow track farther from the edge of the furrow. If your plow has a rectangular draft bar there are 2 ways to
adjust them depending on the brand of plow. The first adjustment adjustment would be to pull the RH/furrow
side of bar back, either with the landing lever or the draw bolt. Sone plows have a pivot baraket on the
draft bar that hooks into the plow frame with a series of holes between the bottoms. On these plows you
need to shift the pivot point to the RH so it pulls more on the front bottom, which will turn the plow
away from the furrow.
cvphoto26091.jpg


cvphoto26092.jpg


cvphoto26093.jpg
Br> These pictures are of a Case MT34 plow, which has the rectangular draft bar, and also has the landing lever to easily adjust the width of the first furrow on side hills when turning furrow up hill or downhill.
Loren
 
Few novice plowmen get a plow set up properly for best results and minimal draft. I had one 3 pt plow that I never could get right by trial end error. I finally gave up and sold the plow. Some adjustments. I wish I had secured the assistance from a more experienced plowman. I drove a tractor for my renter and he made adjustments after I thought it was working perfectly.
 
(quoted from post at 13:38:17 06/12/19) You are right, you shouldn't need sway bars for a mounted plough. How does your plough follow your tractor? If everything is in adjustment, your plough (when in the ground) should follow the tractor 'centrally' ie with your top link pointing straight backwards, not to one side or the other. If that's the case and you can't get your front furrow wide enough, your tractor wheels are set too narrow. If your plough is trying to push towards the ploughed land all the time, then the problem is with the plough. Does the 'cranked' cross shaft have an angle adjustment on it? From Google images, it looks like the MF43 does have a 'cranked' cross shaft with a vertical adjustment lever - this will give you some adjustment of the alignment of the plough. Is one of the legs twisted? All are possibilities! Hope you get it ironed out. Jim
Click to expand...

Thanks for all the comments and ideas. I've learned quiet a bit just from your comments.
I've got is figured out. It was the 'cranked' cross shaft as mentioned here by Jim. Thanks to Loren for the detailed info on those adjustments.
The MF43 3f does have a vertical adjustment arm but the 2f MF43 does not as shown in the photos. On the 2f, the front coulter is attached to the extended beam that would hit my pto shield. So I took off the pto shield and used a pipe wrench to keep adjusting that cranked cross shaft and finally found the sweet spot that solved the problem.
Thanks again
mvphoto37583.jpg


mvphoto37584.jpg
 
Siri troubleshooting guide below. Depending on your plow with your wheel should be sit around 24 to 25 inches from the center of the tractor to the inside of the wheel.
cvphoto26111.jpg
 
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