B2410 lurch in hydro trans when starting out in high: Kubota Review  -- Kubota Tractors Discussion Forum and Review B2410 lurch in hydro trans when starting out in high: Kubota Review -- Kubota Tractors Discussion Forum

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 10-02-2004, 14:53 Post: 97529
Jim McDermott
2004-10-02 14:53:41
Post: 97529
 B2410 lurch in hydro trans when starting out in high

I have a b2410 hydro. when I start out in high the tractor starts to move than seems to lurch or jerk like something lock in in the transmission. It does this at any rpm but the higer the rpm the stronger the jerk. Almost like a very firm shifting automatic transmission shifting. If I'm in the grass and start out in high you can here the trans whine a little like its under a load then it will jerk or lurch as you start out. No matter how easy I try to start out in high it almost always has the same jerk. Some times in low under a load it might jerk a little but I normally don't notice it in low. Has anyone experenced something similar?






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 10-02-2004, 21:15 Post: 97555
cthonestguy

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 B2410 lurch in hydro trans when starting out in high

when was the last time you changed the fluid and filter? sometimes it will act up if there is old fluid and a dirty filter. If it's been a while and over due I'd start there.






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 10-03-2004, 07:01 Post: 97565
JimMcD



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 B2410 lurch in hydro trans when starting out in high

My tractor has 110 hrs. I changed the fluid and filters at 50 hrs. I didn't clean the strainer though. I asked the Kubota dealer if I should clean the strainer at the time I did the 50 hr. service and was told it should be done at 300 hrs. The manual says the same thing. I had the lurch before I changed the fluids and filters and still had it after changing them. I have thought that the power steering doesn't seem a strong as when new, and when I first start the tractor and try to lift the fel. with in a second or two it seems to be jerky as though there is air in the lines. Does the trans.,power steering and loader run off the same pump or or does the trans have its own pump?






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 10-03-2004, 08:17 Post: 97567
TomG

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 B2410 lurch in hydro trans when starting out in high

I can't say how a 2410 is set up, but most newer compacts would have separate pumps for the TX, hydraulics and power steering. I think I'd check the screen. There are stories of tractors where the screens were nearly clogged at 50-hour services.

I wonder if the jerking happens at both high and low rpm's? I also wonder if the tractor is carrying heavy loads or going up steep hills when it happens?






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 10-03-2004, 10:09 Post: 97572
Chief



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 B2410 lurch in hydro trans when starting out in high

I agree with Tom. Pull the screen. I bet you will find it covered with debry impeding oil flow.






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 10-03-2004, 10:13 Post: 97574
JimMcD



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 B2410 lurch in hydro trans when starting out in high

Tom, The jerk is at any rpm, but the higher the rpm the stromger the jerk. It does it mostly in high. I cam be on level ground under no load on the drive and try to start out as slow a I can and it will still jerk when I start out. In low it has to be under when it jerks.






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 10-04-2004, 06:36 Post: 97610
TomG

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 B2410 lurch in hydro trans when starting out in high

Assuming the oil level is OK, you might check if the oil is frothy after some operation and inspect the suction line for leaks and loose clamps.

I'm having trouble theorizing the about the problem is I assume the TX, loader and maybe PS all have problems that result from the same cause. The oil itself is about the only common element on most tractors.

For the TX I'm assuming that starting out' means increasing the speed pedal. I've never operated a HST. However, I am thinking that the description sounds a bit like a relief valve. A squeal or whine might be the HST relief opening under initial load and the lurching could be the relief closing after the initial load has reduced. If that were the case it would be greater in high range and under heavy loads. It's just theory though.






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 10-04-2004, 06:40 Post: 97611
cthonestguy

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 B2410 lurch in hydro trans when starting out in high

Are you still under warranty?






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 10-04-2004, 06:53 Post: 97616
Art White



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 B2410 lurch in hydro trans when starting out in high

You do have a problem and I doubt that the strainer will help but it might as it sounds like all pumps are having trouble but it is unlikely. It would take a minute or two with the tractor but you have several things going on if the hydraulics of the tractor are also goofed up as well as the hydro.






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 10-04-2004, 07:31 Post: 97618
AV8R



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 B2410 lurch in hydro trans when starting out in high

Jim, Please don't take this as an insult, but is your parking break released?






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Discussion Boards > Active Subjects > Messages as Posted > Kubota Review Forum

Thread 97529 Filter by Poster:
Art White 5 | AV8R 1 | Chief 1 | cthonestguy 2 | DennisCTB 1 | DRankin 1 | Jim McDermott 1 | JimMcD 7 | PaulB 1 | rklink 1 | taheide 2 | TomG 2 |




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