Kubota B8200 after Hose and Fluid change no Hydraulics : Kubota Review  -- Kubota Tractors Discussion Forum and Review Kubota B8200 after Hose and Fluid change no Hydraulics : Kubota Review -- Kubota Tractors Discussion Forum

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 10-27-2013, 23:04 Post: 188205
dfiletti



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 Kubota B8200 after Hose and Fluid change no Hydraulics

Hey folks, my name is Dan and I am the owner of a old, but useful, kubota B8200HST 4WD. I continue to be amazed at what can be done with this compact tractor. It has a loader/ bucket on the front that has been very useful... This is until one of the old/ cracked hydraulic lines finally gave up the ghost. Thinking the tired machine could use a bit of restoration, I paid a local Amish Hydraulic company to replace all of the lines on the loader and drain and replace the hydraulic fluid, and put in a new filter.

Since then though, the loaded has operated VERY slowly, and has less strength. In fact, when cold, the bucket will not even lift off of the ground -actually the three point is ALSO slow. It takes 5-10 minutes to 'warm up' enough to lift up. As it's 'warming up', I notice that holding down the lift lever, and revving the motor will have the loader lift briefly then stop, but letting it 'rest' at idle for a second or two, then revving again, will have it lift briefly again before stopping again.

Once it's fully 'warm' it will lift steadily, but slowly, and it will shudder slightly as if there is air in the lines. The bucket is weak, and will not lift as much weight as it could before.

I know it has enough fluid. I have adjusted the directional value every which way and set it back to factory spec. There are no apparent leaks that I can tell. I disconnected/ reconnected the quick-connect lines. Still it's not right. The Amish guys were no help either.

So I ask if anyone here may have any ideas as to where to look. Is there any special trick for bleeding the air out of the system other than running the hydraulics through their ranges a few times? Is it possible that the Amish guys connected something wrong or overlooked a simple step?

I really hope someone here will have some useful input.

Thanks in advance for any and all help and advice you may have,

Dan






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 10-28-2013, 07:45 Post: 188208
hardwood

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 Kubota B8200 after Hose and Fluid change no Hydraulics

Dan;

Welcome to the site, I hope we can help.
There are a lot of inferior fluids on the market being sold as meeting the tractors factory lubrication specs. There are also good high quality fluids sold by reputable manufactures, it can be hard to sort the good ones from the less than adequate.
My guess is that the Amish put an incorrect fluid and likely an incorrect filter in your tractor. The genuine Kubota fluids and filters will be more expensive than the "As good as" low cost products.
This is going to cost some bucks but my suggestion is to drain and flush your hydraulic system then replace the fluid and filter with a recommended Kubota product from a Kubota dealer.
This is a messy job, but nothing you can't handle yourself

Frank.






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 10-28-2013, 07:57 Post: 188209
DennisCTB

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 Kubota B8200 after Hose and Fluid change no Hydraulics

I thought the Amish only used horses for farming? They do Kubota Tractor repair also, interesting!

I doubt the problem is this but you should never put anything but Kubota Super UDT Hydraulic fluid in your tractor.

I would stay away from the Amish and get the correct filters and fluids from a Kubota dealer and do it again unless you are absolutely positive they used the correct stuff. Do it yourself so you know it was done right if you are able

If the B8200 has power steering rotate full left then right a couple of times can help.







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 10-28-2013, 09:02 Post: 188212
kthompson



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 Kubota B8200 after Hose and Fluid change no Hydraulics

I would begin by asking to see what fluid they used. I agree it sounds like fluid used is too thick. They may have used gear oil even and not hydraulic oil. If wrong fluid is use would replace filters and would also verify they used correct filters even if they used correct fluid. Anyone could have made a mistake by picking up a wrong filter or can of oil.

Dennis had the same thought on who did the repair. Understand they use mechanical milkers but thought that was about it. Then I really know little about them. I do doubt they make those electric heaters using particle board but hey saw it on tv so must be true.






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 10-28-2013, 14:11 Post: 188216
hardwood

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 Kubota B8200 after Hose and Fluid change no Hydraulics

I think the biggest part the Amish play in building the heaters is to peel the "Made In China" stickers off the back.

Frank.






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 10-29-2013, 09:59 Post: 188217
MHarryE



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 Kubota B8200 after Hose and Fluid change no Hydraulics

One possibility is the hydraulic pump suction line has a small air leak. Not sure what your line consists of (some suction lines are hose with clamps because there is no pressure) so it could be as simple as a clamp not tightened. If the filter is an inlet suction filter there is a possibility they replaced it with a filter having too fine filtration which is restricting flow. You mentioned the mechanics you had work on your tractor are hydraulics people. I am surprised they won't work with you on resolving the problem since it apparently it worked properly until the line failed. I assume them being Amish has no real affect on this other than they tend to be conscientious workers who pay attention to detail and are of a sect that does not reject modern day equipment or else they would not have been working on it. Did you return the tractor to them for diagnosis or just explain the problem and ask for suggestions? Might be worth a try. People from an Amish sect in Illinois were ones with whom we supplied prototype machinery every year for validation testing because they we could trust them to properly care for the equipment, service it properly, and provide us the feedback we needed so getting them involved - making it plain that you gave them a working tractor with a failed hydraulic line and you gave it back to me non-functional should get them concerned about helping you out.






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 10-30-2013, 22:03 Post: 188235
gaspur



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 Kubota B8200 after Hose and Fluid change no Hydraulics

Kubota uses Multi Grade Valvoline Trans untrack fluid. They also use Valvoline 15w40 motor oil. I use fluids from Wal Mart, which has worked for me for years . I use Mobile One 15w40 engine oil.






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 10-31-2013, 17:06 Post: 188238
dfiletti



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 Kubota B8200 after Hose and Fluid change no Hydraulics

Folks-

Thank you so very much for your generous input. I have talked with the guys at Georgetown Hydraulics (the Amish folks that did the original work). They reported back that the type of fluid they used was "Tractor Transmission Fluid -which should be the correct type for that tractor's hydraulics" -This, on top of the fact that they are Hydraulics specialists, leads me to think they did not make such a mistake. -Please let me know if you disagree. They are looking into the filter being incorrect, and will report back to me.

They did indicate that the pump may be the issue but I indicated I'd like to make sure that we exhaust all other possibilities (like checking for an intake leak -as was mentioned) before considering replacing the pump.

While we're on the subject, does anyone know how easy it is to replace the pump were it to come to that? It seems like it's easily accessible -right under the seat. Is it one of those fairly simple jobs or more (or much more) involved ones?

I'm fairly handy -I service my own cars and motorcycles, (oil/ brakes/ valves/ carbs etc -but not as far as engine tear-downs and transmission work) so I figures I would likely be able to tackle it, if the job were not too bad.

I do think I'll take it back to them for proper diagnosis though.

Thanks again!,

Dan






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 11-01-2013, 01:17 Post: 188242
gaspur



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 Kubota B8200 after Hose and Fluid change no Hydraulics

I BELIEVE IT IS DIFFICULT.






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 11-01-2013, 08:24 Post: 188243
chuckles



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 Kubota B8200 after Hose and Fluid change no Hydraulics

My guess is that the problem is with the work done by the shop. Replacing hoses and fluids does not cause pump failure.

If you did not change the fluids and hoses yourself you will not want to tackle pump replacement.






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