L3800 jerky 3pt

rmroper · Feb 8, 2013

Thanks to folks on this forum I have been directed to Kubota jerky 3 pt problems that have frustrated some owners. Does anyone have any experience with an L3800 jerky 3 pt. The dealer says they are not aware of any issues on this tractor.

k0ua · Feb 8, 2013

Well how much reading do you want to do?

Just use the search function and put in Jerky and set for titles only. Keep in mind the L2800, L3200, L3400, L3700,L3800, L4400, L4600, Mx4700 and Mx5100 are all related. More reports of the older L2800, L3400 than the newer models, but plenty of L3800's have reported this. It seems that not all of these tractors have this problem, but some sure do. I traded mine off in 2012. L3400hst.. had it bad.

http://www.tractorbynet.com/forums/kubota-owning-operating/268927-mx5100-jerky-3pt-hitch.html

http://www.tractorbynet.com/forums/kubota-buying-pricing/266103-jerky-pto-thing-fixed-yet.html

http://www.tractorbynet.com/forums/kubota-owning-operating/221524-l-series-jerky-3ph-jeffs.html

http://www.tractorbynet.com/forums/kubota-owning-operating/247089-kubota-l3700-jerky-hitch.html

http://www.tractorbynet.com/forums/...ng/233308-l3400-3-point-hitch-adjustment.html

And dozens more.

James K0UA

case245 · Feb 8, 2013

i had an L3800

THAT HAD THE JERKY 3pt hitch i traded it up to a 70hp kubota

Rockyridge · Feb 18, 2013

I have read most of the posts for jerking 3 pt. and have not see this solution yet. Possibly this has been addressed already but I have not found it

Has anyone tried using an air cushion to reduce the jerky 3 pt?
I am thinking about something like the air chamber that is used to eliminate the banging when shutting off a water faucet. Obviously it would need to be much stronger though.

As a starting point I would see installing something like pipe 1.5 by 8 or 10 inches with a tee in the hydraulic line just before the 3 pt.

I would try it myself except that I don’t have a warm place to work and it is February in Minnesota. Also to do this safely it needs someone with knowledge about hydraulics and especially working with high pressure air, which I don’t have. For example, could you use standard threaded water pipe for this or would you need something stronger?

Any thoughts on this appreciated

case245 · Feb 18, 2013

most all L series kubota have the jerky 3pt a guy on here put a valve from a grand L into his L series tractor search that that might help you out a bit i had an l3800 myself it had the jerky hirtch traded for a 7040

kiotiken · Feb 18, 2013

type "jerky 3pt site:tractorbynet.com" into google.com and grab a coffee! One member fixed it by making some adjustments only to find it caused other side effects and the one other previously mentioned case were they used a grand L valve.

k0ua · Feb 18, 2013

kiotiken said:
type "jerky 3pt site:tractorbynet.com" into google.com and grab a coffee! One member fixed it by making some adjustments only to find it caused other side effects and the one other previously mentioned case were they used a grand L valve.

Ken it is one of those things, that is so hard to put your finger on. There have been some reports of "fixed or adjusted valves" by the dealer that have fixed the problem, yet did the fix cause the settling problem and the jerk when the FEL is loaded problem that Chilley807 found when he set the valve to workshop manual specs? Or did the dealer replace the valve with one off of a Grand L to keep a happy customer ? We just don't know for sure. And we have a fairly large number of fellas say theirs is perfect. Does that mean they tried to raise it slowly like to feather out a box blade load of dirt? I am not sure. I can only speak to the things I am sure of, which is my own experience. This problem is elusive as to its frequency or percentage of tractors affected, its cures if any, and/or any side effects of said cures. I would like to be able to advise people about this problem, but it is almost impossible to do so if you are to remain objective. It boils down to: some do, some don't, some say it can be fixed, some say it can't.. Some say it does not exist (I can vouch for that being a lie). and on and on.

James K0UA

TheGoose · Feb 18, 2013

I have an L3400...hitch jerks. Not really a problem unless you're using a boom-pole type attachment like a post hole digger. When using a PHD you really have to know what you're doing to keep it from going out of control.

It actually comes in handy when you're trying to knock the dirt off something. Overall I'd say it's more of an annoyance. It wouldn't keep me from buying another kubota.

wild bill · Feb 18, 2013

I came across this post on the other Kubota forum, Smoothing Out 3pt Hitch--???? - OrangeTractorTalks - Everything Kubota.

02-13-2013, 01:20 PM #8
MEA
New Member

Join Date: Feb 2013
Location: Wesley Chapel , FL
Equipment: L3800
Posts: 1 Re: Smoothing Out 3pt Hitch--?? UPDATE!!!

--------------------------------------------------------------------------------

I have been watching these posts and responses for months. I also have a "New" 2012 l3800 that had the jerky hitch problem. The tracter was 1 week old when I reported the issue to the dealer. First three responses were" Normal operation for an entry L series." BUT my dealer was very willing to continue to work with me on a solution. Kubota Rep and mechanic came from Corp. to install a newly designed valve used to correct this issue. The rep said he was in CA for the corp meeting a few weeks ago and this was the first topic that was presented regarding these tractors. They installed the valve last night and called me down to see it in operation before they return the tractor to me. Both the rep and mechanic from Corp. were wonderful and explained they( Corp Kubota ) KNOWS about this issue and have been waiting for KUBOTA to approve fixing these in the field.

The operation is NOT perfectly smooth but almost perfect. Nothing like it was before, and I have had 3 other B series tractors prior that were perfectly smooth. This is almost perfect.

Just wanted to let everyone know this is a fixable problem through KUBOTA. Well alomost 100% fixable at this point. ( My opinon only. )

k0ua · Feb 18, 2013

wild bill said:
I came across this post on the other Kubota forum, Smoothing Out 3pt Hitch--???? - OrangeTractorTalks - Everything Kubota.

02-13-2013, 01:20 PM #8
MEA
New Member

Join Date: Feb 2013
Location: Wesley Chapel , FL
Equipment: L3800
Posts: 1 Re: Smoothing Out 3pt Hitch--?? UPDATE!!!

--------------------------------------------------------------------------------

I have been watching these posts and responses for months. I also have a "New" 2012 l3800 that had the jerky hitch problem. The tracter was 1 week old when I reported the issue to the dealer. First three responses were" Normal operation for an entry L series." BUT my dealer was very willing to continue to work with me on a solution. Kubota Rep and mechanic came from Corp. to install a newly designed valve used to correct this issue. The rep said he was in CA for the corp meeting a few weeks ago and this was the first topic that was presented regarding these tractors. They installed the valve last night and called me down to see it in operation before they return the tractor to me. Both the rep and mechanic from Corp. were wonderful and explained they( Corp Kubota ) KNOWS about this issue and have been waiting for KUBOTA to approve fixing these in the field.

The operation is NOT perfectly smooth but almost perfect. Nothing like it was before, and I have had 3 other B series tractors prior that were perfectly smooth. This is almost perfect.

Just wanted to let everyone know this is a fixable problem through KUBOTA. Well alomost 100% fixable at this point. ( My opinon only. )