3-Point Hitch Ck2610 HST - Jumpy 3PH

[Tindall07]

Hello Everyone,

New CK2610HST, less than 5 hours on it. Used my road grader for the first time yesterday and had terrible control issues with the 3PH. Going down it is butter smooth, but when I go slow lifting up on the implement it is very jerky or jumpy. I tried playing with the adjustment valve for the speed directly fwd of the seat but it didnt seem to help with it.

Is this something normal I should grow accustomed too on the Kioti's or is there a fix for this?

Thank!

 

[Amvcane]

Can’t say it’s normal. My CK35 does the same thing. Down is smooth. Up is much different. As you very slowly but steadily move the lever the 3pt will bump up about1/2”, stop, then bump up a 1/2” again, over and over as you very slowly move the lever.
I doubt this will help, but your not alone.

 

[s219]

Is it position control? If so, those tend to work better if you move the lever faster/quicker than the hitch is coming up. In other words, raise it directly to "5" (or whatever height desired, by number or eye) and let the hitch raise. If you keep fiddling with the lever as it's raising, you can create a feedback loop that causes jitters.

With position control, there is actually a feedback linkage that tells the hitch when to start/stop raising. All the hand lever does is to set a target position. Any deviation between target position and feedback position will cause the hitch to raise up or bump up. If you keep moving the lever slowly the feedback will keep bumping the hitch up to meet your changing target and it will seem jumpy. Move your lever in larger faster motions and then let the hitch "catch up" before making more adjustments.

If that doesn't solve the problem, have the dealer look at it.

 

[PEJ5]

Check out this video. It sounds like this is your issue. It is adjustable, but you may want to have your dealer come out to adjust it under warranty.

Kioti CK20S Tractor MLS Valve Adjustment on three point hitch - YouTube

 

[Tindall07]

Can’t say it’s normal. My CK35 does the same thing. Down is smooth. Up is much different. As you very slowly but steadily move the lever the 3pt will bump up about1/2”, stop, then bump up a 1/2” again, over and over as you very slowly move the lever.
I doubt this will help, but your not alone.

Yes Sir, that's exactly what she is doing. You explained it better than I did.

Is it position control? If so, those tend to work better if you move the lever faster/quicker than the hitch is coming up. In other words, raise it directly to "5" (or whatever height desired, by number or eye) and let the hitch raise. If you keep fiddling with the lever as it's raising, you can create a feedback loop that causes jitters.

With position control, there is actually a feedback linkage that tells the hitch when to start/stop raising. All the hand lever does is to set a target position. Any deviation between target position and feedback position will cause the hitch to raise up or bump up. If you keep moving the lever slowly the feedback will keep bumping the hitch up to meet your changing target and it will seem jumpy. Move your lever in larger faster motions and then let the hitch "catch up" before making more adjustments.

If that doesn't solve the problem, have the dealer look at it.

That makes perfect sense, I know it will come up smooth if I quickly throw the handle up to a position. Its when I try and feather it that it stutters. Thank you.

Check out this video. It sounds like this is your issue. It is adjustable, but you may want to have your dealer come out to adjust it under warranty.

Thank you, I did watch this but my problem seems to be more related to what s219 said. His seems to really get stuck in that feedback loop. I imagine if I wanted I could make this MLS valve adjustment and fix my stuttering but it doesn't seem like its an issue right now. I just wanted to make sure something wasn't completely off with this tractor. Its my first "Big" one so its a learning process.

 

[ritcheyvs]

The exposed knob below the front of the seat only controls how fast the 3-pt lowers. In fact, it is common for this knob to get turned accidental (by feet) to the point the 3-pt will not lower at all. But sensitivity for raising the 3-pt is adjusted by a screw on the MLS valve. Some models have a removable plate to access this screw but others require the seat to be removed. See the video in post 4.

Added: If Kioti has truly switched to an inferior, poor-performing MLS valve on the -10 models, disregard all after the lowering discussion. I don't have a -10 model. I don't want a -10 model. And I don't know that much about them.

 

[Phantese]

Hello Everyone,

New CK2610HST, less than 5 hours on it. Used my road grader for the first time yesterday and had terrible control issues with the 3PH. Going down it is butter smooth, but when I go slow lifting up on the implement it is very jerky or jumpy. I tried playing with the adjustment valve for the speed directly fwd of the seat but it didnt seem to help with it.

Is this something normal I should grow accustomed too on the Kioti's or is there a fix for this?

Thank!

Hi,
Bad news! s219 is as correct as I've heard it explained. I have a new model DK4210SE Cab with backhoe ($50,000) and it does the same thing, I had a CK 4010SE and it shook like a Mothertrucker... I took it back to the dealer over some other issues and got the new model. I've called many dealers and Kioti USA as well (they were no help and actually never admitted to the following but a number of dealer's told me this).
Many owners have complained to their dealers and Kioti USA about the shake (myself included) all falling on deaf ears. It is a lower cost valve (better known as cheap) Kioti has chosen to put in their "10" series tractors (maybe others as well I'm not sure) and it is as S219 says, and if you choose to be satisfied with it, you must operate the 3 PH like S219 has offered. There are some "fixes" that can help the shake but until Kioti admits it's mistake we are stuck with it.
I know a dealer who added a small cushion tank (like in a home hot water system) to take out the pulsations, he says this makes it about 75% better, but not completely, his cost is about $300 he passes on to the customer (warranty won't cover it). He told me Kioti actually called him to see how he was dealing with reducing the bouncing.
I'm told Kioti USA has gone to Kioti Korea about the bouncing and Korea (Head Office) told them too bad so sad, no fix in the works. Kioti USA has told me to rev up the throttle then raise the 3 PH up full as fast as you can then drop it into position, that's their fix.
Now I paid extra for a Link peddle which allows me to connect the engine RPMs to the foot peddle (similar to a car when you push the foot peddle the tractor revs up and speed increases), this is a feature so we don't have to be at full throttle all the time and saves fuel, however Kioti now says when you want to raise your implement you need to go to full throttle then lift 3 PH then drop it. Who uses an implement that way, I wanted to raise and lower it as I was moving at low RPM without stopping to raise RPM to reposition the Box Blade, (I still can but I have the unholy shake to deal with then), so the link peddle isn't much good at times. Sorry for the last paragraph,
It was suggested to me (by a Kioti dealer none-the-less) to call and call Kioti USA and continue to complain about the shake until they had enough logged complaints they decide to deal with it as the dealers are helpless. I would suggest to all potential Kioti owners to get the dealer to put a lighter implement (blade, Landscape rake) on the 3PH and operate it in front of you before you make up your mind to buy it, and live with the shake. Heavier implements shake less, than lighter ones, If I had it to to do over again I would have stayed with my Kubota, as I know have a new machine and new company to deal with that I'm not so happy with.

 

[Kioti Paul]

I would argue that the dealers are NOT as helpless as Phantese says. They could either not stock the affected models (maybe not an option), or they could certainly educate any potential customer about known shortcomings concerning any of their tractors, and steer them towards equivalent models that don't have (known) (unresolved) issues.

Seems to me that a dealer would want to develop a good reputation in their community. If I purchased one of these models, then later found out the dealer had previous knowledge of the problem, I would be furious with the dealer and never even consider doing business with them again.

 

[Amvcane]

Neither myself nor the op has this bouncing or oscillation as seen in the video in post #4. Also, nothing like the symptoms that Phantese has.

 

[Phantese]

Neither myself nor the op has this bouncing or oscillation as seen in the video in post #4. Also, nothing like the symptoms that Phantese has.

Amvcane - Good to hear, I'm told this valve change was done on newer tractors, I don't have the particulars on the year Kioti stareted doing this, both my "10" series machines were 2018 models. It would be nice for folks to investigate and contribute what years (and machines) have the jumpy 3 PH, as Kioti "doesn't want to talk abot it", it's left to dealers to try to solve it after the sale.