3-Point Hitch RK55 3pt fine tune

[ptsg]

Does the 3 pt control lever moves freely and smooth?

Mine had the friction discs a bit too tight making the lever relatively hard to move if I want to do small adjustments. I had to give it small bumps to make the fine adjustments.

I just adjusted the pressure on the spring and moves much better and smooth.

 

[ovrszd]

it is Position Control

Okay. Then the Position Control may be out of adjustment. There should be a linkage system fastened to the rockshaft arm and to a small lever coming out of the lift housing. This rod is how it transfers the information to the cylinder controller inside the lift housing. Look for this linkage system and make sure the ends are securely fastened and tight. Should have small swivel joints on each end. Might get lucky and find the linkage is coming loose.

I'd take a pic of my Kubota system for reference but it's out in the cold Machine Shed and I'm lazy.

 

[jethroish]

I'll get under there and look for adjustments AFTER the this cold snap passes.
Thanks for the suggestions.

 

[markie61]

Does the 3 pt control lever moves freely and smooth?...I just adjusted the pressure on the spring and moves much better and smooth.

There may be slightly more friction (compared to other tractors) due to the linkage having two controls - the main lever on the operating station and the cable controlled one for ground adjustments. Maybe a little wear over time and/or lubricant may free things up a bit.
BTW, 22 degrees here in Virginia this morning - I imagine it's a bit less tropical in Indiana...

 

[markie61]

Does the 3 pt control lever moves freely and smooth?...I just adjusted the pressure on the spring and moves much better and smooth.

There may be slightly more friction (compared to other tractors) due to the linkage having two controls - the main lever on the operating station and the cable controlled one for ground adjustments. Maybe a little wear over time and/or lubricant will free things up a bit.
BTW, 22 degrees here in Virginia this morning - I imagine it's a bit less tropical in Indiana...

 

[ovrszd]

Markie, can you get some pics of your position control linkage so he knows what to look for?

 

[BigMark]

I have this same issue with my RK55HC when trying to adjust my finish mower to an exact height. I nudge the lever back several times with no result. Then when it decides to have an affect, it jumps the deck up 1 1/2 - 2" all at once. I can lower it slowly and under control, but adjusting it up is no fun. I've came to accept it, all fine tuning must be done while lowering the deck. If i lower it too far then i have to jerk it back up and start the lowering process all over again. It's a little frustrating to say the least, but I still love the tractor. If there is a fix for this I would be interested in it.

 

[jethroish]

I have this same issue with my RK55HC when trying to adjust my finish mower to an exact height. I nudge the lever back several times with no result. Then when it decides to have an affect, it jumps the deck up 1 1/2 - 2" all at once. I can lower it slowly and under control, but adjusting it up is no fun. I've came to accept it, all fine tuning must be done while lowering the deck. If i lower it too far then i have to jerk it back up and start the lowering process all over again. It's a little frustrating to say the least, but I still love the tractor. If there is a fix for this I would be interested in it.

My sentiments exactly.

 

[ovrszd]

Sounds like it's built into the system.

Trying to think about how that could be.

The lowering part is explainable because you are simply opening the valve and letting fluid escape.

In regards to raising. The problem is in communication between the lever and the position control linkage. Wouldn't that indicate sloppiness in that linkage? This would require considerable movement of the lever before it's effective at the valve?

So you guys have looked at your linkage to ensure it's tight and functioning properly? When you move the lever does the linkage do anything abnormal such as flexing or "rolling" which would add slack?

I'm very curious about this. Especially if there's a simple fix of some kind.

 

[BigMark]

I'll see what I can determine and reply back this weekend (after the big game)