3-Point Hitch m7040 kubota

[Dave M7040]

One thing that is not readily apparent unless you had a choice to make when buying a new tractor like I did is that the R4 tires are on 28" rims and the R1's are on 30" rims.
So this lowers the tractor further than just the height of the tire lugs.
Dave m7040

 

[gwdixon]

I have an M7040 with factory cab on r4 tires.
I also have the workshop manual which my dealer provided on a USB stick when I bought my tractor.
The linkage being referred to is called the position feedback rod and its function has to do with providing a signal to the draft control.
I am not happy with the lift height in spite of using the high lift hole of the lift arms.
However, I would be reluctant to start messing with the feedback rod.
If you will park your tractor on a hard level surface and measure the height above ground with the lift arms down and up, I will do the same and then you will have a comparison.
Suggest we agree to take the measurements to the center of the implement attachment hole at the end of the arm.
Dave M7040

Not to start an argument, but that particular rod in the photo has nothing to do with the draft control. Notice where it is connected on each end.

The draft control does have a rod but it is attached to the top link bracket. A completely different issue. Draft control is varied by which top link mounting hole is used and the lever next to the driver's seat. BTW, I also have the factory workshop manual.

The lift control rod from the photo is adjusted like a turnbuckle (as already described). One end is right hand thread and the other a left hand thread. When you get it where you want and the hydraulic pump doesn't go into relief just tighten down the jamb nuts.

And let me assure you again...it has nothing to do with the draft control.

 

[gwdixon]

Here is the procedure from the WSM:

 

[oosik]

Wow! Is the 3-point lift arm height that much different between R1 & R4 tires. I have a M6040, which is the same frame as the M7040. Its on OEM 16.9 x 28 R1 tires. My arms will lift at least 6" higher than any of my implements.

 

[Dave M7040]

gwdixon is absolutely correct.
This will teach me to do posts late at night!
This section of the WSM seems to have a simple checking procedure to adjusting the rod in question which affects the lift height.

I think the comparison between identical tractors I suggested will tell a lot to the original poster.
Dave m7040

 

[Tx Jim]

The lower horizontal lift arm should be set at the hole farthest from the tractor and the vertical lift arm pin should be set in the top hole to get maximum height. Sound like you have already tried this.

I was thinking the hole in draft link closest to tractor will raise 3 pt higher. I know hole farthest away from tractor will raise more #s on 3 pt with all other things equal. Also attaching center link on tractor in bottom hole in bracket on tractor will raise rear of attached implements higher.

 

[gwdixon]

I was thinking the hole in draft link closest to tractor will raise 3 pt higher. I know hole farthest away from tractor will raise more #s on 3 pt with all other things equal. Also attaching center link on tractor in bottom hole in bracket on tractor will raise rear of attached implements higher.

One way to evaluate a situation is to imagine the extreme case.

If the vertical lift arms were attached all the out to where the attachment balls are located then the vertical lift arms would be at a severe angle. This severe angle would shorten the the distance from the top of the vertical lift arm to the horizontal lift arm. In the extreme the vertical lift arm would approach being parallel with the horizontal lift arm. The horizontal lift arm would almost touch the place where the top of the vertical lift arm is attached thus raising the end ball higher so tall attachments could be hooked up.

See the crude drawing below. (I think we are talking about the same thing.)



Of course, theory is fine but to find out for sure requires an experiment!

 

[game warden]

First I want to thank everyone for all the info.. I also have the R4 tires and I know that will lower my height but you should still be able to use implements. When I lower my 3pt. hitch it will go to the ground and when I raise my 3pt. hitch it will raise 20 inches to the center of hole, not quite high enough to hook my disc up. I made all adjustments with top and side links. This is not my first tractor, but my first Kubota. Been raining last couple of days when it stops I will try all the info. I have got from everyone, again "THANKS" to everyone

 

[gwdixon]

First I want to thank everyone for all the info.. I also have the R4 tires and I know that will lower my height but you should still be able to use implements. When I lower my 3pt. hitch it will go to the ground and when I raise my 3pt. hitch it will raise 20 inches to the center of hole, not quite high enough to hook my disc up. I made all adjustments with top and side links. This is not my first tractor, but my first Kubota. Been raining last couple of days when it stops I will try all the info. I have got from everyone, again "THANKS" to everyone

With R1, tires the hitch doesn't get to the ground when lowered so you are correct, the tires make a difference. It appears that, with the adjustable vertical bars adjusted short, the attachment points should rise.

Hope some (or any) of the ideas work out for your situation. If not, post back and maybe a new responder will have the ideal solution!! Never know.

Quite a bit of curiosity at this point.

 

[jcummins]

I have an M7040 with factory cab on r4 tires.
I also have the workshop manual which my dealer provided on a USB stick when I bought my tractor.
The linkage being referred to is called the position feedback rod and its function has to do with providing a signal to the draft control.
I am not happy with the lift height in spite of using the high lift hole of the lift arms.
However, I would be reluctant to start messing with the feedback rod.
If you will park your tractor on a hard level surface and measure the height above ground with the lift arms down and up, I will do the same and then you will have a comparison.
Suggest we agree to take the measurements to the center of the implement attachment hole at the end of the arm.
Dave M7040

Did this, but now rereading, I did not take a measurement in the down position. I had a landscape rake on the 3pt and did not want to take it off.

When I first got this tractor, it was noticeable that I did not have the lift height that I wanted. I adjusted the side lifts to the farthest hole on the arms, and also put the hyd top link in the lowest hole on the tractor. I'm fairly satisfied with that, but still not like my other M7040 that had R1s. Assuming the difference is the tires.

My center pin height is 27".