Adjusting 3pt height

[rickmacheske]

Does anyone know how to adjust the lift height of the 3pt on a L3400? When I raise my 3pt it does not move until I reach between the 3 and 4 mark on the stick. It continues to raise way after the max (8). There has to be an adjustment somewhere.
Thanks,
Rick

 

[QueBota]

My 2910 does the same thing, going to ask about it next time I go by the dealer. Don't recall it happening before but I noticed it after reading this post.

Dave

 

[kwolfe]

I don't your machine specifically, but try looking under the fender below the stick. If it is anything like the BX series (your machine is much bigger ), the lever connects to linkage that can be adjusted.

 

[QueBota]

Finally got around to looking at this. My 2910 wouldn't raise the 3 point until the control hit between 3 and 4 and would keep raising it beyond 8. There is a threaded rod with lock nuts on either side of a connecting lever (follow the 3 point lever down to the HST case adjacent to the rear wheel). If you adjust the locknuts down towards the end of the threaded rod it will begin lifting your 3 point sooner. I moved mine as far towards the end of the rod as I thought prudent (left two threads protruding) and my 3 point now begins to lift around 1 1/2 and stops lifting at around 8.

Doesn't seem right, I think that lifting operation should occur with the locknuts set on the middle of the rod.

Dave

 

[chuck4389]

You got it right.

On both my YM1500 and B3030 there is a threaded rod and two jamnuts on the lifting mechanism. It takes a 13mm open end wrench and a bit of contortions to get to it. On the B3030 it's located on the right hand side.

 

[StrangeRanger]

Geez, yours starts moving at 3 or 4? You're lucky. Mine starts at like 4 or 5
j

 

[rickmacheske]

I ended up removing the stop that the lever hit. Works great now as long as I don't care about the numbers. This thing really does go to 11.......

 

[Yankee Clipper]

The correct way to set the hitch height on a small Kubota tractor (B/L) is to grab the lower arms and lift them manually (engine dead) to their max height. You will feel it hit a stop inside. Take a piece of chalk or magic marker and mark one arm and the top cover at the same point - this is indicated max lift height.

Now start the engine and pull the position control lever until the hitch is as high as it will go. You do not want it to get to where the marks you just made line up.

There is an external followup rod on one end of the rocksahft that has lock nuts (12 mm) to allow the linakage to be extended or shortened. Extend the rod to increase lift height/ shorten it to lessen lift height. Do not extend it to the max (where the marks line up) as you will be blowing the system relief. You will heat the system and also you can loose power to any hydraulic application.

Also don't run it with the adjuster off (as the previous poster suggested) as you will be holding the system on relief and the tractor will get warm and so will you.

Now you know..

 

[capt jack]

Would this be the same way to adjust the lift on an L series Kubota? I have a friend with a 30 something hp L kubota ( not sure what model) and he complains it barely raises a shredder high enough to drive onto a very low trailer. I know something can be done to fix this.
Jack

 

[JerryG]

It is designed that way. The reason is because a plow will be below ground level.

 

[QueBota]

Thanks, good info. I will try this today. I think the lock nuts on the threaded rod should be centered when the lift lever is set to begin lifting before 1 and stop lifting at 8, that would be considered "normal" lifting operation. Mine doesen't start lifting till slightly after 1 and does stop at 8. If I go a little beyond 8 it hits the relief area. As I posted earlier lock nuts are set about 2 threads from the end of the rod.

Dave

The correct way to set the hitch height on a small Kubota tractor (B/L) is to grab the lower arms and lift them manually (engine dead) to their max height. You will feel it hit a stop inside. Take a piece of chalk or magic marker and mark one arm and the top cover at the same point - this is indicated max lift height.

Now start the engine and pull the position control lever until the hitch is as high as it will go. You do not want it to get to where the marks you just made line up.

There is an external followup rod on one end of the rocksahft that has lock nuts (12 mm) to allow the linakage to be extended or shortened. Extend the rod to increase lift height/ shorten it to lessen lift height. Do not extend it to the max (where the marks line up) as you will be blowing the system relief. You will heat the system and also you can loose power to any hydraulic application.

Also don't run it with the adjuster off (as the previous poster suggested) as you will be holding the system on relief and the tractor will get warm and so will you.

Now you know..

 

[cityfarma]

My 3ph problem is that the movement is too sensitive. Does anyone know how to give a greater shift movement to adjust a smaller implement movement? Movement around "3" is either too low or too high over with minor change.

I will be trying the setting as described by Yanky Clipper but this does not appear to adjust sensitivity.

Cityfarma

 

[QueBota]

Well I followed the advice above and readjusted my 3 point and I am just about back where I started from. To keep from hitting the relief area beyond 8 I had to adjust the lock nuts back toward the center of the rod. I begin lifting around 3 1/2 and stop lifting past 8. My earlier setting would allow me to hit the relief area just beyond 8 and there was no sure way of preventing the lever from going there unless I purchase another stop similar to the one that you can set to prevent the lever from going below your setting of choice. I spend a lot of time working in the woods/brush and I could see branches/brush reaching out and grabbing the lever and pushing it beyond 8. I may not notice this in the heat of battle and wouldn't want to operate in the relief area for very long.

It appears in order to fix this I will have to remove the lift lever and linkages from the side of the case and index/clock the lever so it is in the middle of the travel when the valve is in the center position. For now I will live with beginning to lift at 3 1/2 and stopping at just beyond 8. I think whoever assembled the tractor adjusted it like that to keep the 3 point out of the relief area.

Dave