those that have a L 40 series kubota

VA MTN MAN · May 8, 2011

crazyal said:
Mine did it until I realized that because I didn't have loaded tires and if I was in 2wd the rear tires would slide. I could hear the tires sliding though, in a caab that could be a little harder.

Tires filled and box blade on back. In 4 wheel drive , not sliding.

VA MTN MAN · May 8, 2011

dex3361 said:
Does it let completely go and then grab or does it pick up speed smoothly?

feels like it lets go for an instant then catches

VA MTN MAN · May 8, 2011

Grandad4 said:
Is the HST fluid low, perhaps? If you are on a steep slope, low fluid may be letting air into the transmission circuits, causing it to freewheel intermittently.

it was full when i started and i havnt seen any leaks. I will check

kuboman · May 8, 2011

Sounds like you have a problem. If the tractor is new I would be bugging the dealer as it likely won't fix itself

dex3361 · May 8, 2011

ricky williams said:
feels like it lets go for an instant then catches

I would make sure that I was in 4WD and try to make it repeat. I saw where a previous poster stated the rears could be slipping I have had the same sensation when I thought I was in 4WD but was in 2 WD. I have also sen where the tires were slipping on the rims and it can feel like this. The only other thing that comes to mind is the clutch. Though a clutch usually does not grab and let go.

angussprings · May 8, 2011

I have a 5740 and do not have that problem at all. Just a note...to engage the 4 wheal drive is pushing the lever down in the 5740 not like the 4310 and others. I had a 4310 and up was 4x4. The 5740 up is 2 wheel drive.

art · May 9, 2011

What mode are you running your transmission in?

crazyal · May 9, 2011

Have you tried adjusting the HST response knob to see if making it quicker or slower has a difference?

VA MTN MAN · May 9, 2011

It is not the tires slipping it is in 4wd and was on a concrete boat ramp. The oil is full and it did it in high gear low. I tried it in all hydro modes. A friend has a new 3840 or whatever that size is that I will try when I get up his house.

DDT · May 10, 2011

Mine does that aswell. Normally when unloading off the trailer when gravity breaks over onto dove tail slope...I thought it was the HST plus doing it.