Is this normal on Kiotis?

[Scrambler82]

My HST Max 28, creeps a little both on the level or on hills and IMHO it is because the GO pedal is out of adjustment.
If the tractor is creeping forward I tap the reverse pedal very lightly and it stops... maybe an internal seal.

 

[Looking4new]

Mine has crept from day one in 2012. I do what Scrambler does and all is good.

 

[k0ua]

Mine has crept from day one in 2012. I do what Scrambler does and all is good.

Hydro's creep on level ground because the swash plate is not centered. In other words the plate is not coming back to a neutral position.

 

[lilranch2001]

That's the one....I just could not get to taking a pics......thanks for adding that....let's see what OP says now....

For some reason my tractor will not take pics either!

 

[Threepoint]

Hydro's creep on level ground because the swash plate is not centered. In other words the plate is not coming back to a neutral position.

Aha! James, thanks for this. :thumbsup: I've done it from time to time for years, but never drilled down to learn the technical explanation for why tapping the pedal for the opposite direction works.

Just pulled up this interesting tutorial: https://isavetractors.com/articles-1/tractor-science-the-hydrostatic-transmission/

 

[k0ua]

For some reason my tractor will not take pics either!

Perhaps a firmware upgrade?

 

[k0ua]

Aha! James, thanks for this. :thumbsup: I've done it from time to time for years, but never drilled down to learn the technical explanation for why tapping the pedal for the opposite direction works.

Just pulled up this interesting tutorial: https://isavetractors.com/articles-1/tractor-science-the-hydrostatic-transmission/

They didn't really show that the 9 pistons rub on the swash plate or "slip". Of course the whole thing is immersed in oil, but wear does occur. In our smaller SCUTS and up to a point on larger CUTS the swash plate is controlled directly and mechanically by the pedal system Above a certain size the force on the operators foot required to move the swash plate increases to an uncomfortable level, and then they employ a hydraulic or electric/hydraulic servo mechanism to indirectly move the swash plate. Of course anything can get out of adjustment and not center perfectly so that the swash plate has some "bias" toward one side of the other.