Kubota rear hydraulics

[sixdogs]

Sounds bogus to me or more correctly, a misunderstanding. The point of a central warehouse is that you stock parts dealers wouldn't normally want to stock. Doesn't seem Kubota is dumb enough to spend two generations building up a market share and clientele only to abandon them for a spare part.

 

[ovrszd]

Sounds bogus to me or more correctly, a misunderstanding. The point of a central warehouse is that you stock parts dealers wouldn't normally want to stock. Doesn't seem Kubota is dumb enough to spend two generations building up a market share and clientele only to abandon them for a spare part.

Seems to be the trend. In all parts, not just Kubota.

 

[Leejohn]

Didn't Kubota just build or building a new place some where here in the US?

 

[AGTtactical]

Hi guys. I am ordering an L6060 with 3 remotes, all three float detent double acting valves, and a TNT kit. All ordered and installed by Kubota, probably at the dealership.

Two guys on a another thread have had leak problems with their valves, and leaks/fitment problems with the TNT. Have any of you had the same problem?

 

[sixdogs]

Not me on several Kubotas. I had a good shop put mine on and no problems.
Seems that any leak would be easy to fix but I've never heard of a leak.

 

[jmc]

I ordered 3 Kubota installed rear valves (Without detents) in addition to Kubota's top and tilt components, along with my L4330. This was back in 2004 so things might be different now. There was no external leakage on any of those components. Both cylinders did leak down- no big problem on the top cylinder but too fast on the side cylinder for bush hogging.

I posted about changing those Kubota cylinders out for another brand with piloted valves. Below is a screen shot of a TBN search for parts one and two of the discussion, if you want to look them up:

 

[AGTtactical]

Thanks guys. Such helpful people here. Maybe I should skip the TNT, and just get the valves only until I'm sure which cylinders for the TNT are best. Everyone that has TNT loves it, but I don't want to create problems trying to improve my tractor.

 

[Ricn]

Use my T-n-T all the time and love having them with NO created issues with either, they just make life better! At first the tilt cylinder kept bleeding off and was a pain but after installing a lockout valve in the line all is good, simple to do as well and my Kubota dealer did it free when I took my tractor in for service as it was still under warrantee. At times, and after things sit a week or so, I open the valve knob, lift my three point up and plumb my implement side to side then lock the valve knob and go to work. The Top cylinder goes in and out lots for my operation so having that control from a lever is soooo nice!

Ricn

 

[AGTtactical]

Use my T-n-T all the time and love having them with NO created issues with either, they just make life better! At first the tilt cylinder kept bleeding off and was a pain but after installing a lockout valve in the line all is good, simple to do as well and my Kubota dealer did it free when I took my tractor in for service as it was still under warrantee. At times, and after things sit a week or so, I open the valve knob, lift my three point up and plumb my implement side to side then lock the valve knob and go to work. The Top cylinder goes in and out lots for my operation so having that control from a lever is soooo nice! Ricn

Thanks Ricn. How long have you had your Kubota TNT? How many hours? Is there a lock out valve on each line to tilt cylinder (2), or just one? If you have to use your tilt, can you? I mean, if the bleed is that bad, and you have to put on a lock out valve on it, what is the point of having a tilt cylinder?

Does the lock out valve keep fluid from bleeding out of the cylinder? What would happen if you forget to open the lock out valve, start the tractor, and try to move the TNT? I imagine you could blow the line upstream of the lock out valve. And shouldn't the Kubota valves keep fluid from bleeding out? Sorry for all the questions...

 

[Ricn]

About a year now. Maybe 50 hrs or so since they were installed. Lockout is only on the tilt, just before the quick coupler and on one line only. The lockout idea was suggested by several here on TBN so after my dealer concurred, it was installed. Tilt cylinder is not as useful to me as the top one but is used whenever I crown up our 2500 ft driveway. Most other may not feel the cost benefits of having both and yes I could do that manually like before but hand cranking those side screws really gets old and because I too am old and tired of doing it I opted for something easier. The bleed off was a surprise and more than I wanted to deal with and mostly caused by the implement weight of my flail mower and Land Plane as I do pick them up and down lots, at least this is what the dealer thought was the cause but also that the new valves they installed underneath and for the TNT to operate from have limited pressures so bleed off is pretty common they told me. It's my thought that those in the know about Hydraulics could explain this better but Kubota sells certain kits for this so that is what I have, a Kubota Tnt valve kit that bleeds off. This system and the lockout valve are all dealer installed as I know little of valve bodies as we never had modern tractors or the need for hydraulics back then and neither of my Dad's tractors used the 3 points so were removed. My other tractor has always had a backhoe since new so again, I never knew of bleed off issues as that tractor has never had the problem. Kubota dealer tells me that if accidently pushing the control valve with lockout closed is not an issue so long as its not held down for long periods. Now, when leveling things up, it is done while standing beside the tractor on the shop concrete floor and not while on the seat. I use a long level to set things right, lock the valve down and then go to work never needing to adjust it for a long time. Starting the tractor has no impact on the valve, open or closed. It only effects the bleed down capability of the control valve so fluid will stay in the cylinder and not return back. Me guess is, there are better valve bodies out there but it is what it is when we buy a dealer kit and are not an expert in our own right.
so far, I remain happy with it having no regrets. Hope this helps.

Ricn