BX24 Top & Tilt

[Inky05]

I want to add T & T on the BX24. I am assuming I can use a two spool tandem center Joystick valve(like a Loader valve). Use a hose with a female ISO 7241-1 "B" series coupling for the "P" port and a hose with a male coupler on the "T" port and connect them where I would connect the BH hoses... since the BH won't be on when I'm using the T & T. A & B of one spool to the Toplink and A & B of the other to the tilt cylinder.

Is this correct?

If I use a loader valve, which cylinder (if any) should have the "float" ?

 

[keyman1808]

Inky I haven't removed my BH yet but isnt there a third hose on there?? I was thinking of using a diverter valve on the front to (actually 2) so I can keep my loader on if need be and use a rocker swich to go back and forth. But now things start getting complicated

 

[MtnViewRanch]

I want to add T & T on the BX24. I am assuming I can use a two spool tandem center Joystick valve(like a Loader valve). Use a hose with a female ISO 7241-1 "B" series coupling for the "P" port and a hose with a male coupler on the "T" port and connect them where I would connect the BH hoses... since the BH won't be on when I'm using the T & T. A & B of one spool to the Toplink and A & B of the other to the tilt cylinder.

Is this correct?

If I use a loader valve, which cylinder (if any) should have the "float" ?

Your tilt cylinder would be the one to have the float position.

 

[Inky05]

Inky I haven't removed my BH yet but isnt there a third hose on there?? I was thinking of using a diverter valve on the front to (actually 2) so I can keep my loader on if need be and use a rocker swich to go back and forth. But now things start getting complicated

One nipple and one hose on the Tractor, two hoses on the Backhoe.

With BH attached one of the BH hoses plugs into the Tractor hose. The other BH hose couples onto the Tractor nipple.

Without the BH, The two BH hoses are removed and the Tractor hose couples onto the tractor nipple, thereby looping the flow from the nipple back to the tank hose.

Placing the valve with the "Pressure" port on the Tractor nipple and the "Tank" port to the Tractor hose should effectively mimic the hydraulics of the BH operationally. With the Tandem valve in the center position, the flow from the "Pressure" side will loop to the "tank" side....

...at least thats my take on it...

Your tilt cylinder would be the one to have the float position.

Thanks... Makes sense!

 

[keyman1808]

If thats the case then couldn't one just use a valve with PB and run it back to the BH instead of the tank and have the valve there all the time ready for use. I know most would say why would you but if you wanted to leave the BH on and active while using the valve for a grapple or something else. It would be there like a remote. Or would running it like that cause problems. See I over think things and make it too complicated.

 

[Inky05]

If thats the case then couldn't one just use a valve with PB and run it back to the BH instead of the tank and have the valve there all the time ready for use. I know most would say why would you but if you wanted to leave the BH on and active while using the valve for a grapple or something else. It would be there like a remote. Or would running it like that cause problems. See I over think things and make it too complicated.

Good point...

I don't quite grasp the PB concept.. if someone would post a diagram I might get it... I would think that if you put the Tandem center valve in series with the BH it would essentially accomplish the same thing... just when you're using the first valve in the series, the others wouldn't work... unless you used a priority valve... Now you got me Over-Thinking things... dang it!

 

[keyman1808]

Yeah I dont grasp the power beyond thing either but it would be nice to have the valve there while the BH is on. My biggest problem is picking the right valve and quick connectors. All that stuff is foreign to me. Thats why I am hoping that someone does it and posts everything here including the valve and model as well as the quick connector info. I can handle the hoses and mounting.

 

[Inky05]

I just googled PB and don't see how it is any different than what I explained using Tandem Center in series...

The numbers I listed for the QC's are correct.

This is the Valve I am considering

 

[radioman]

I am not a hydraulic expert or anything, but still learning. From what I understand so far -with power beyond, you have one out and 2 returns. with power beyond setup, fluid is always moving.

So you will need to get an open center or one with power beyond port. From the spool you picked, it appears to be open center. you may need to check the port to make sure the plug is removed so its not setup as closed center otherwise your tractor reliefs will be kicking in continuously which is not good.

 

[mmurphy]

I want to add T & T on the BX24. I am assuming I can use a two spool tandem center Joystick valve(like a Loader valve). Use a hose with a female ISO 7241-1 "B" series coupling for the "P" port and a hose with a male coupler on the "T" port and connect them where I would connect the BH hoses... since the BH won't be on when I'm using the T & T. A & B of one spool to the Toplink and A & B of the other to the tilt cylinder.

Is this correct?

Yes,just make sure you have right gal/mn flow on valve.

 

[kennyd]

Here is a link to a very well done Power Beyond drawing: Baum Hydraulics

The main difference is that in a PB setup, only the waste oil from the work ports go to the T (tank) port on the valve, the rest of the unused flow continues through the valve to the PB port to feed the next valve in the series. The last valve in the series does not need to be PB equipped.

 

[Bugsyinc]

...so on a BX24 is the loader valve already PB equipped?

...what about the BH plumbing?

 

[J_J]

You would know that, by looking at the valve. or opening the PB outlet and see if there is a screw, or is there s a sleeve in the PB port. If it was plumbed for a BH, then they would have used the PB port to pass fluid to valves downstream.

 

[radioman]

To use the top and tilt feature, you will need the 3 pt on right? so on the BX24, after removeing the BH and putting on the 3 pt you will have 3 ports available. the hose loopback which is the constant flow power beyond. technically the other 2 is the return - One is the power beyond return where hose loopback goes in and the other is volume flow to the tank return.

JJ is right, you need to see which valve you have and put sleeve or plug in for power beyond use. You dont ever want to use a close center valve on the BX's or your BH loop relief will be kicking in constantly=bad.

 

[keyman1808]

If I recall the BH isnt plumbed for PB. It sis the last valve in the system and returns directly to the tank. Well at least thats what someone said. However I believe you can attach a valve (with PB) at the supply side of the BH then attach the BH to that. And the return to the tank the same way you always do. One of the mechanics at the Kubota dealership explained it that way. I have no done it yet as I have not found a valve yet (haven't looked very hard either). I dont even know what size top link I need as I dont have one to measure.

 

[J_J]

3pt is usually the last valve in the tractor hyd system. Some people are just running a supply hose out of the PB port to the back, and if no BH the loop hose is connecting the supply hose to the 3pt. and all is well.

If you want a valve in the back, you can do that, and put QD's in the work ports as the supply for the BH. This valve should have PB also. Leave everything connected with no loop hose necessary. A separate cyl return hose would be connected to the tank.

If you make one of the remote valves a 3 position detent, then all you have to do is to plug in the BH, and put the remote valve into fwd detent to supply the BH, and plug in the BH cyl return hose to tank.

The difference is about $200 for the remote valve thing.

 

[Bugsyinc]

Very helpful... If I use a PB equipped valve between the loader PB and the Hoe I can use the remotes (with QD's) for anything... Like a grapple or power angle snow plow as long as I locate the valves correctly.

I would like to use a 12VDC D03 valve, but then they don't come with PB.

If they did, I could use three position rocker switches in several locations to operate the valves, but I would want flow controlls in line then.

 

[kennyd]

Very helpful... If I use a PB equipped valve between the loader PB and the Hoe I can use the remotes (with QD's) for anything... Like a grapple or power angle snow plow as long as I locate the valves correctly.

I would like to use a 12VDC D03 valve, but then they don't come with PB.

If they did, I could use three position rocker switches in several locations to operate the valves, but I would want flow controlls in line then.

Solenoid valves with subplates are frequently used in PB lines...no problem.

 

[J_J]

I believe all sub plates are designed to handle high pressure. Whereas the OUT port on a standard valve to direct the cyl fluid to tank is not designed for high pressure. Although some valves OUT port can handle the high pressure. .

 

[Bugsyinc]

Excuse my ignorance, I'm not real familiar with "mobile hydraulics".

I am, however, somewhat familiar with industrial hydraulics. The last time I did a project with D03's, the out port was rated well below the rest of the valve. I'm pretty sure the out port was 1500 PSI which I guess would be plenty for most applications on a tractor excepting maybe a log splitter.

I'm sure there would be no danger of cracking the valve, I just think it would be rated lower due to blow-by in the spool.