My CK20 hst tends to stall on take off

[markkioti]

My CK20 hst tends to stall on take off. not pushing or lifting anything yet. 8 hrs on it , just trying to break it in. I have the TLB package on this unit. It seems uderpowered. It must be simple. Up hill is very tough. This is on asphault for break in purposes. I want to take it easy with the break in. It is tough keeping the RPMs down under 2K.

 

[Killowatt]

I've only got 16 hrs on my new CK20HST, but my impression so far is that when we can rev 'er up above 2K that it'll make a big difference. I've done it a couple times to grind through some deep snow, and it seems like the tractor just comes to life over 2K.
Without your profile filled out, I can't see if you have any tractor experience, so....... Is it possible you just need to put tractor is low range? Or are you jamming the HST pedal down too far too fast?

Anyway, good luck with your new CK20. I love mine!!
/forums/images/graemlins/cool.gif

 

[Bob_Skurka]

Run the engine a little higher, it sounds like you have the rpms too low. Try it at 2000, then 2200, then 2400. See if each of those is better, you should find that as the speed goes up the problem goes down, there will be a point where it is simply not an issue. There has been a reported issue with the CK20HST tractors, it only affects some of them, but I suspect you are simply running the engine too slow.

 

[bigtractor]

Yep got to apply the Hydro slowly.

The faster it goes the more you can push the go peddle.

Just apply the go peddle slowly. If you drop the hammer it is kind of like starting from a stop in 4th gear.

Don't be afraid to use low range it takes alot of load off of her and when you drop the Hoe you will really see a diff.

 

[Cliff_Johns]

</font><font color="blue" class="small">( This is on asphault for break in purposes. )</font>

I'm not sure I understand this. How does the the asphalt improve break-in.

In any case, either you're pushing down too far on the HST as others have said, or you're turning with 4wd on when on an asphult surface.

Remember, more torque from less HST and more speed from more HST. Though you may already know this, it can't be repeated too often.

Cliff

 

[DK35vince]

</font><font color="blue" class="small">( not pushing or lifting anything yet. 8 hrs on it , just trying to break it in. )</font>

I say start pushing and lifting, thats what you bought it for.

As far as the stalling on takeoff, heres my checklist.
1- Make sure parking brake is off (it happens /forums/images/graemlins/shocked.gif)
2-bump up the RPM's (In my opinion, higher RPM's is better than lugging the engine)
3-use low range if you need too
4-ease into the hydro peddle, the farther you push it the less power you will have.

 

[markkioti]

Cliff, I have using the asphalt because it has been reaining in Virginia and I don't want to stuck just yet. Bad weather. It's like buying a porshe and losing your license on the way back from the dealer.

Also concern that limit of power or preasure may cause me problems in dirt while clearing things.

Thanks everyone for the advice. I will experiment a bit today.

 

[Egon]

Do you have different ranges?

Are the brakes adjusted properly?

Egon

 

[KiotiJohn]

Mark, I answered your PM, but I also want to cover it here. Others have pretty much said the same thing, but here's mine:
The treadle pedal on the HST should be treated as a transmission, not a gas pedal. For working or climbing, put the tractor in low range, rev up to at least 2,000 RPM, and ease into the pedal at a rate of speed so as not to drag (lug) down the engine.
If you've ever driven a manual automobile, you know you don't easily start the car out in 3rd gear, and it's the same with pushing that HST pedal to fast too soon. The engine will just lug right down and try to catch up with the amount of pedal your applying. Not good to do.
Increase your RPM, and use low range unless you're just transporting across a distance.
Also, remember to NOT USE 4WD on hard surfaces as you can damage the front end because in 4WD the fronts don't turn the same rate of speed as the rears. Use only 2WD on asphalt or other hard surfaces where you can't get a little wheel slip.
I'm sure this will solve your problem. Good tractoring! John

 

[bluechip]

Just want to emphasize: Do not run in 4wd on pavement!

LIke the others, pedal down slow, but if you are in 4wd you could be in mechanical bind between front and rear drive.

Damage can result operating 4wd on pavement as tractors do not have a differential between front and rear like some AWD trucks and cars do.