kvmapr
Bronze Member
Last Friday I picked up a 6 foot box blade, took it home and before sunset had it mounted on my Jinma 254's three point hitch. First thing I noticed is the links between the lift arms and draw bars were too long (I had put them out at full length while using my middle buster to rip trenches in sod). I shortened those up and the box blade now rides at a good elevation.
But then I ran into a problem that I think I need some help solving. I noticed that when I look at the profile of the box blade, that is the side view, the front end of the box is higher than the back end, where the scraper blade mounts. I tried a few test runs and the blade couldn't get a bite in the ground. Something wasn't right.
I recall some photos here on TractorByNet of properly mounted box blades. I think it was 3RRL's that I was looking at, and in those photos the box is canted the opposite of mine. That's to say, the front end of the box is lower than the back end of the box. In that manner the ripper's should engage easily, and the scraper blade should get a nice bite.
I looked at the 3 point hitch and could see that the box blade rotates forward and back on the two mounts at the ends of the draw bars. And it's the top link that controls the pitch, or how far forward or back the box is canted off of level.
I looked at the top link, and it is shortened up as short as it will go (about 19 inches on center between the two eyes). But if the box blade is to be angled so it will get a bite in the ground, that top link will need to be much shorter, maybe four or five inches shorter.
So now my questions...
Am I seeing the problem correctly, or have I missed something here? Lord knows I have yet to master the three point hitch system.
And if I'm on the right track, is a shorter top link the right answer?
Thanks all for your advice.
But then I ran into a problem that I think I need some help solving. I noticed that when I look at the profile of the box blade, that is the side view, the front end of the box is higher than the back end, where the scraper blade mounts. I tried a few test runs and the blade couldn't get a bite in the ground. Something wasn't right.
I recall some photos here on TractorByNet of properly mounted box blades. I think it was 3RRL's that I was looking at, and in those photos the box is canted the opposite of mine. That's to say, the front end of the box is lower than the back end of the box. In that manner the ripper's should engage easily, and the scraper blade should get a nice bite.
I looked at the 3 point hitch and could see that the box blade rotates forward and back on the two mounts at the ends of the draw bars. And it's the top link that controls the pitch, or how far forward or back the box is canted off of level.
I looked at the top link, and it is shortened up as short as it will go (about 19 inches on center between the two eyes). But if the box blade is to be angled so it will get a bite in the ground, that top link will need to be much shorter, maybe four or five inches shorter.
So now my questions...
Am I seeing the problem correctly, or have I missed something here? Lord knows I have yet to master the three point hitch system.
And if I'm on the right track, is a shorter top link the right answer?
Thanks all for your advice.