Tapping into hydraulics on B6000

[Marko]

Hi all,

I recently purchased a B6000 tractor and want to add a FEL. I have read the post from TOPGEAR and saw all the nice work he did! Nice

My question is, do you need to add a larger oil resivoir when adding so many hydraulics?

Thank,
Marko

 

[cappys tractor]

Depends on where you are getting your hyd from.

If you are using the existing tractor Hydraulic pump system, then you will only need to add fluid, once you get all the lines, rams full. but if you are going to use a separate pump, then you will need a separate pump, sump and more capacity.

I don't know where the guy got it, but my B6000 has a special valve on the top of the 3PH cylinder. That is how I get my Hyd power. But the valve is a PITA to turn all the way open for FEL, and all the way closed to 3PH. I only use the gear case reservoir for both the gear case cooling, lubrication, and hydraulic fluid supply.
You should make sure the filter is clean on the Hyd supply line. There is a link somewhere on these pages for B6000 manuals. search for one if you don't already have one. The oil filter and Hyd filter are reusable, cleanable fine mesh strainers. find them and clean them.

 

[cmorningstar01]

I don't know where the guy got it, but my B6000 has a special valve on the top of the 3PH cylinder. That is how I get my Hyd power. But the valve is a PITA to turn all the way open for FEL, and all the way closed to 3PH. I only use the gear case reservoir for both the gear case cooling, lubrication, and hydraulic fluid supply.

I have the same valve on my B5100E, I use it to control a hydraulic cylinder to raise and lower a snow plow, That valve was optional on some of the B series machines and is still available thru your Kubota dealership at a very hefty price, You may be able to find it at one of the used tractor parts yards.

But the valve is a PITA to turn all the way open for FEL, and all the way closed to 3PH.

It takes a bit of getting used to when using this valve, The valve should only be turned when your engine is NOT Running as when you turn the valve you momentarilly are blocking the flow of hydraulic fluid from the pump and could cause damage to yur pump and hydraulic lines.

Cappy... is your valve the type that has a T shaped handle that has an arrow on it to show the direction of fluid flow or is your valve the type that screws in and out sort of like a hose spigot?

 

[Marko]

Thanks for the advice!

I'm planning to use the existing pump, I've seen where other have been satisfied with the flow rates. I just wasn't sure where all the extra oil would go when the cylinders retract.

This helps alot.

Marko,

 

[Marko]

Here is a picture from another post that shows the valve.

 

[cappys tractor]

I have the faucet type valve.

Marko. If the 3PH wont stay up, the top of the Piston is the 4 bolts shown directly above the valve and 2 more on the angle bracket. Wiggle to take the top of the piston off, work the piston up and you can change the oring. I could only find the big oring at the Kubota dealer, the smaller cap oring is generic. I had one in my multi kit of orings from harbor freight. I think the big oring was 7 bucks, and 5 shipping.

I'm not close to the manuals now, but IIRC, the gear case holds 2.5 gallons of fluid. there seems to be no issue with level, or volume. I have installed a 3PH wood splitter that uses the Hyd system.

Once I ran the splitter, i had to fill up the reservoir, but once all is full it is fine. Just have to check to make sure leaks or heat doesnt let the fluid level drop during use.

 

[cmorningstar01]

I just wasn't sure where all the extra oil would go when the cylinders retract.

With dual acting cylinders the fluid amount used basically never changes after your initial refill to top off lines and cylinder, When the cylinder goes into the extended position the fluid is used to push the piston up and when the cylinder goes into the retracted position the fluid is used to push the piston down.

When you use a single acting cylinder is when you need a resevoir for the additional hydraulic fluid to push the piston up and when the cylinder retracts due to gravity the fluid in the cylinder needs a place to go.

My tractor has the "T" type handle with the arrow to show fluid direction flow.I purchased it used, It was off a B7100 , Basically the fluid is diverted away from the piston that raises the 3 point hitch and it is used to power whatever equipment you choose, In my case it is to lift and lower a snowplow I installed on my machine

 

[Marko]

Thanks for explaining that. Now I understand how the resivoir doesn't need to be increased. Oil just flows from one side of the cylinder to the other. I will be sure to use double acting cylinders.

Many Thanks,
Marko

 

[Ekaeeri]

Hey. Can I install that single acting cylinder directly? how would I get it to work.

 

[Dave_eng]

Hey. Can I install that single acting cylinder directly? how would I get it to work.

The point that you need to be certain that you understand is that for an external single acting cylinder to work, you shut off the hydraulic flow to the 3 pt. You cannot have both with the kubota set up. Changing from 3 pt to external cylinder is a pain.

Other options are available using valves with power beyond or high pressure carry over but these usually confuse those not used to the technology.

I am helping a guy in FRANCE who bought a Chinese tractor on line knowing nothing about tractors. Now he realizes he needs external double acting hydraulics to do what he want with certain implements.

We have exchanged 83 emails while trying to get his tractor to where he has the features he needs and we are still waiting for the new control valve to arrive.

Others have jumped into their hydraulic systems, torn things apart and end up in a complete mess.

Just proceed with caution and seriously consider getting hydraulic expertise from a local specialty place not a dealer. It is not just a matter of buying parts and bolting them on!

Case in point, the photos you posted shows black iron plumbing fittings which have no place in hydraulic systems. You may say, well, it is only a return line so what is the big deal. Hoses break down internally, things plug and now your low pressure return is seeing hundreds of psi if not more.

I want to help you any way I can and am not trying to be critical of either your tractor or your work but rather want to see you reach your goals safely. Having hydraulic oil injected under your skin is a medical emergency.

This illustration is in every more modern Kubota manual.

Dave M7040

 

[Larry LGT 165]

I read this thread with interest as I have an early B6000E that came with a B648 snow blower. There is no hyd block near the fuel filter to tap into but the hyd lift control valve had obviously been mounted on the fender.

Hope no one minds me piggy backing this question on an existing thread but the topic is the same. As the previous owner has passed away, can anyone tell me where the hyd lines ( both banjo fittings) would have been connected on these very early B6000s ?

Thanks Gents.

EDIT: I never realized quite how stale dated this thread was...... guess I should have started a new one.

 

[Dave_eng]

I read this thread with interest as I have an early B6000E that came with a B648 snow blower. There is no hyd block near the fuel filter to tap into but the hyd lift control valve had obviously been mounted on the fender.

Hope no one minds me piggy backing this question on an existing thread but the topic is the same. As the previous owner has passed away, can anyone tell me where the hyd lines ( both banjo fittings) would have been connected on these very early B6000s ?

Thanks Gents.

EDIT: I never realized quite how stale dated this thread was...... guess I should have started a new one.

Suggest you start new on the Gray section.

Send me a PM when you have done that so I don't miss your post

Dave M7040

Dave M7040

 

[North Idaho Wolfman]

Suggest you start new on the Gray section.

Send me a PM when you have done that so I don't miss your post

Dave M7040

Dave M7040

He doesn't need to do it in gray, B6000 are not grays.

 

[Dave_eng]

He doesn't need to do it in gray, B6000 are not grays.

NIW and Larry

Sorry for any confusion.

Dave M7040

 

[Larry LGT 165]

Suggest you start new on the Gray section.

Send me a PM when you have done that so I don't miss your post

Dave M7040

Dave M7040

He doesn't need to do it in gray, B6000 are not grays.

In what little I have been able to learn, I suspect this particular "early B6000E" may possibly have been borderline gray production.

It does have the English decals and additional foot rests, but it is pre-foot throttle and pre-shutoff lever under the dash.

It also "does not have the hydraulic connection block" in the line that I understood was where the B648 snowblower hyd lift control would normally have been tied in on later B6000Es.

The lift control appears to have been bolted on the fender in the past, and the hyd lines do have Kubota banjo fittings.

My initial conclusion, though probably incorrect, was either these fittings were hooked "in place of the rear lift banjo fittings", (rendering that function temporarily inoperative,) or that "stacked banjo fittings may have been used to supply both".

As the previous owner has passed away, and no additional hyd fittings came with the tractor, I find myself at somewhat of a disadvantage.

Any knowledge of how these early models were plumbed up would be a real help, and pics would be even better.

Thanks Gents, Larry