CK20H tranny pop off seems weak

[B2400]

I understand what your saying. My Kubota B2400 will either spin all 4 tires or,if traction is high, load the motor heavily when the hydro goes into bypass due to reaching relief pressure setting.
I would contact your dealer, describe the situation and see if they can check the hydro relief valve setting. It would appear yours is set on the low side and robbing you of some useable working power.

 

[KiotiJohn]

I get you completely now. While I do have that happen sometimes when I meet an immovable object, usually, even with my backhoe on, I get tire spin in loose sand/mud. that happened today while I was removing a stump I had just dug out. It's possible, in my opinion, that your relief valve could be set too low if that's happening with the brush mower on. Unless it's a really oversized/heavy duty 60" mower that is robbing power at the PTO. Keep in mind that while Kioti recommends a 60" can be used, you have to size the PTO HP to the mower as well. Some heavy duty mowers require more than the 15.5 PTO HP that the CK20 has. I would think that if the power at the PTO is overloaded, you may get less power for the wheels. I may not be correct in this, but that's the way it seems to me. I use a 48" brush mower, not heavy duty, with no problems. good luck, John

 

[Steve_Miller]

I tried to explain this a while back but couldn't quite put it to words as you guys have. I had a CK20HST, NH TC24DA and a B7610HST delivered to my place to test drive and I found the Kioti and the NH to do the exact same thing while trying to fill the loader bucket. The tractor would just sit there and I know they had more power but could not put it to the wheels. This was completely opposite with the B7610 as it would not stop and all four wheels would even spin (and it had loaded tires as well) to the point of burying itself. I thought the NH should do this as well but it wouldn't , the CK seemed to have more power to the wheels than the NH even with its three less HP. I'm still going to get the CK though but in the geared version with FEL and backhoe as soon as I sell my Kubota.

Steve

 

[JerryG]

Are you letting up on the pedal as the tractor is slowing down? By letting up, the HST is effectively being placed in a lower gear. The more it is pushed down the higher the effective gear ratio is.

 

[KiotiJohn]

One thing I know about using my loader is that when you first move into the pile and get stopped, you work the loader and HST pedal together to get the bucket filled. A good pile is almost like an immovable object unless you're alternating the bucket position. I have no problems getting power to the wheels as long as I'm digging in, curling, curling back down and scooping some more, each time pulling a little more into the pile. Maybe this is what you're talking about. I find it to be just fine when I work it this way, but if I just move in, and expect that I can just push straight into the pile and fill the bucket, it won't work. It's a coordinated effort. John

 

[To20Chris]

That's certainly true, but with my gear tractor I often end up spinning the wheels in order to keep the bucket pressed into the pile. If I overdo it then I end up stalling the bucket, and then I have to let up, or even reverse a bit, so that I can lift and fill more. Sometimes the bucket has bitten in, but is not full, and if I just back out I'll be left with a partial load. I'm trying to improve my judgement so that I can move in and lift without stalling the bucket or spinning too much. I would guess with HST you should be able to keep a little forward pressure on without spinning?

 

[KiotiJohn]

</font><font color="blue" class="small">( I would guess with HST you should be able to keep a little forward pressure on without spinning? )</font>
That's pretty much the basic of it Chris. However, sometimes I just let it spin a little, reverse and forward again. The easiest way to get a good load is to go in with the front of the bucket angled down a little, dig in, and curt the bucket up while pushing into the pile. The HST does make it easy to do that maneuver without having to stop to do anything else like move a lever etc. I think with practice and learning how to use the ranges to the best advantage, these types of problems won't be problems for most people after a little while. I'm surprised that the mid range in the 25s and 30s is not stronger. I'll have to go try them to see if my techniques in use will be any different. John

 

[getut]

Ok... since I've finally successfully described my issue to you guys and you've all batted it around for a while, maybe I can ask the obvious question:

Is this point adjustable? Can I increase this hydraulic pressure to a higher point? From what other have said this seems to vary slightly from CK20HST to CK20HST, which to me indicates that some tractors are adjusted slightly different. I would like to slightly increase the power to the wheels.

 

[getut]

Guess I need to bump this thread now, maybe again a little closer to the weekend. It seems that most people responded closer to the weekend.
One of you guy has to know if the HST can be adjusted any, from the descriptions it sure seems that different CK20's are coming adjusted slightly differently from the factory or dealer.

 

[Steve_Miller]

I agree, the CK20HST I had to test drive wouldn't even think about spinning the wheels when up against an immovable object and sitting in loose sand. I probably would have purchased it by now if it would have. I'm now back thinking on the geared model.

Steve