Kubota 9540 steering drifts

[ovrszd]

Yep, I only notice it when roading. My tractor runs 22mph so it becomes an issue then.

 

[MessickFarmEqu]

360 over 4 miles is within tolerance. We've had some that are much worse. Its just part of hydrostatic power steering.

 

[TripleR]

My L5740 was right at 360 degrees per mile and pretty annoying, it is now within specs, some drift but not excessive same with our M8540 and previous L5030.

 

[ruffdog]

Yep, the New Holland, David Brown, Deere x744 all do it.

 

[Tx Jim]

Yep, the New Holland, David Brown, Deere x744 all do it.

My JD 4255 doesn't drift and it's hydrostatic steering with 10,800 hrs on the tach. I think it poor parts clearances & POOR QUALITY CONTROL.

 

[ovrszd]

Nah Jim, I think it's just luck of the draw. Doesn't matter what color the paint is. My JD2210 mowing SCUT drifts worse than my Kubota.

 

[MHarryE]

Some tractors have a single double acting steer cylinder. The displacement per unit movement is larger on the head end than on the rod end hence the steering wheel will continually drift as you make small corrections back and forth - it takes more turn to steer right rather than left. Many have balanced steer cylinders to counteract this effect - rods out both cylinder ends. At Gleaner, when people's complaints finally got to us, we went the inexpensive way - 2 single acting cylinders, one for turning left and one for turning right. Same cylinder both sides so equal displacement, problem solved. Not saying this is your problem but it is one thing. But some drift will always occur on a hydrostatic steering system. It's the nature of the beast.

 

[skyhook]

Just lift the front wheels off the ground,
move them left to right by hand,
if there's "play" find out where it is and repair it,
if there's "no" play, then it's "the nature of the beast" syndrome...IMO

 

[Tx Jim]

Nah Jim, I think it's just luck of the draw. Doesn't matter what color the paint is. My JD2210 mowing SCUT drifts worse than my Kubota.

I still think "quality control of parts or lack of" not luck of the draw is the problem. I think JD's quality control isn't as good as it was in '91 when my tractor was built.

 

[ovrszd]

I still think "quality control of parts or lack of" not luck of the draw is the problem. I think JD's quality control isn't as good as it was in '91 when my tractor was built.

Yeah I agree. Outsourcing parts is a large contributor to that problem. So given that scenario, luck of the draw will determine the end result.