Kioti DK40 HST, slow moving

[the old grind]

A common cause of 'power loss' hasn't been proposed (yet), not that it's the fix here. 'Feedback' adjustment on the 3PH. If it's just a bit off, hydraulics can deadhead and sap power. BTDT Hydro pump will usually 'max' at less than full throttle/rpm and and FEL may work normally while o'all power is noticeably impaired. (Hydro running at relief pressure the whole time..)

Want to evaluate such symptoms with the 3PH at various heights (vs fully 'up'), a quick way to rule out this possibility. Pressure testing here or there may point to a sticking valve somewhere in the loop that also causes hydro pump to deadhead. (interested to hear what the dealer finds.)

 

[Lieber]

Has anyone ever found the answer to jake552 question of why his dk 40 was slow.I have one with the exact problem with only
80 hrs.My dealer isn't sure what the problem is if any.It seems high range is okay but mid and low are weak taking off,and low wouldn't pull my truck up a hill.Any comments would be appreciated.

 

[murphy1244]

I hate threads that turn into a dead end!!!! Welcome Lieber have you checked your linkage? Did you do the 50hour trans fluid change? What color was it?

 

[Lieber]

No i didnt change the fluid but i changed both hydraulic filters,fluid was so clear you couldnt hardly see it........maybe thats it,no fluid,only kidding its full.Jake wrote me back said his pedals were out of adjustment,werent going down far enough,my problem is different.Mine takes off like a clutch slips when you let out the pedal,also it coasts to a stop doesnt stop like it did 30 hours back.High range seems okay but low and med are slow and weak.I couldnt pull atruck up a hill in 4 wheel low,eng just went from 2800 to a stall.The dealer picked it up today,but has no idea what to do about it.when I find out ill let you know.

 

[Coyote machine]

Did this problem occur before or after you changed the filters?

 

[Lieber]

Did this problem occur before or after you changed the filters?

Problem started before filter changes.Hydrostats are new to me but it seems this tractor needs some more pressure.My dk 35 was a maual shift and it would of pulled my truck up this hill in 2 nd gear low.This tractor is more of a beast I would think on the gravel it should just spin the tires in low range instead of coming to a stall.The dk 35 would. Lieb

 

[k0ua]

Problem started before filter changes.Hydrostats are new to me but it seems this tractor needs some more pressure.My dk 35 was a maual shift and it would of pulled my truck up this hill in 2 nd gear low.This tractor is more of a beast I would think on the gravel it should just spin the tires in low range instead of coming to a stall��.The dk 35 would. Lieb

My DK35se HST will spin the loaded tires with 800 lbs on the 3pt in all cases. Yours should too. Sometimes they won't spin in MED. range, it depends on the surface. They never spin in HI.

 

[Lieber]

Thanks for telling me that,I assumed that and told the dealer that. Lieber

 

[Trails End]

Thanks for telling me that,I assumed that and told the dealer that. Lieber

Any word from the dealer yet on your slow moving HST??

 

[roadhunter]

A common cause of 'power loss' hasn't been proposed (yet), not that it's the fix here. 'Feedback' adjustment on the 3PH. If it's just a bit off, hydraulics can deadhead and sap power. BTDT Hydro pump will usually 'max' at less than full throttle/rpm and and FEL may work normally while o'all power is noticeably impaired. (Hydro running at relief pressure the whole time..)

Want to evaluate such symptoms with the 3PH at various heights (vs fully 'up'), a quick way to rule out this possibility. Pressure testing here or there may point to a sticking valve somewhere in the loop that also causes hydro pump to deadhead. (interested to hear what the dealer finds.)

Excellent suggestion. I had a similar experience with my 3 point auger. For some reason it won't go all the way up so if you try to go to higher it will just sit there trying to go up but won't while the pump struggles. You have to drop the 3 point level down to a level it can achieve for the machine to work correctly. This could cause the transmission to lack power.

 

[Lieber]

i havent heard anything from dealer,hasnt worked on it yet.But im going to forward roadrunners suggestions to him. Thanks,Ill keep youall posted if he figures it out. lieber

 

[Lieber]

Sorry thats Roadhunter!! lieber

 

[CJONE]

Lieber, you said the engine went from 2800 to stall when you tried to tow something? If that is the case it sounds like the stat/hydraulics are fine. You need to find out why the engine is not putting out HP. The relief should open on the stat before the engine stalls. The slow response and coasting is puzzling. Hopefully your dealer can figure it out. CJ

 

[Lieber]

I got my tractor back today,they checked pressure,was 4975 psi in hydrostat.Checked engine on their dyno machine.said everything checked fine including hp.Of all the threads Ive read I guess its the nature of this tractor,It still takes off easy and stops easy,but I can live with that as long as I dont stall out pulling something up my hill?I don't plow with it,mostly bush hog move gravel drag logs and grade 1/3 mile driveway.Im thinking I could fix this by bumping up the relief valve,but its still under warranty.Lieber

 

[Lieber]

It got down to about 28 degrees.I decided to fire it up and move it into the garage,I let it warm up for about 10 minutes and in low range it hardly wanted to move.It has over 80 hrs on it,I changed the filters at 70 but I didnt change the fluid,Im going to change the fluid,what weight does kioti recommend for the hydrostat thanks

 

[jbcompu]

Jake did you figure out your problem ? I have the same issue.

 

[IslandTractor]

Jake did you figure out your problem ? I have the same issue.

If you read the thread, I think you will understand that there was no problem other than the operator using the wrong range while towing.