Direction of flow from diverter valve

[k0ua]

JC let me ask you this. On the curl/dump function. When you press the lever to the left, it should move smoothly all the way left and just stop. You cannot move the lever any more to the left. But when you move the lever to the right it moves smoothly and comes up against a "soft" stop then moves past this "soft" stop and moves further right with harder spring pressure. In other words more effort from you is required to move further right.

Is what I described the way your control works?. And if so, with a loaded bucket (some weight in the bucket) does your bucket dump faster when you move the control to the right up against the first "soft" stop or faster when you move the control all the way past this first "soft stop" area into the hard stop where it will not go any further to the right now matter what ?

Do you see where I am headed here? I though all Kubota controls were fast dump in the all the way to the right past the "soft" stop area, but JJ showed me the loader manual a few post back where the fast dump (regen) is actually the first right position not the hard all the way to the right position.

From what I remember of my 2 past Kubota's the regen was hard right, but it is not like I can go out and check it out. My Kioti is the hard right past a soft stop for the regen position for sure, but that has very little to do with how your Kubota works..

 

[jcummins]

JC let me ask you this. On the curl/dump function. When you press the lever to the left, it should move smoothly all the way left and just stop. You cannot move the lever any more to the left. But when you move the lever to the right it moves smoothly and comes up against a "soft" stop then moves past this "soft" stop and moves further right with harder spring pressure. In other words more effort from you is required to move further right.

Is what I described the way your control works?. And if so, with a loaded bucket (some weight in the bucket) does your bucket dump faster when you move the control to the right up against the first "soft" stop or faster when you move the control all the way past this first "soft stop" area into the hard stop where it will not go any further to the right now matter what ?

Do you see where I am headed here? I though all Kubota controls were fast dump in the all the way to the right past the "soft" stop area, but JJ showed me the loader manual a few post back where the fast dump (regen) is actually the first right position not the hard all the way to the right position.

From what I remember of my 2 past Kubota's the regen was hard right, but it is not like I can go out and check it out. My Kioti is the hard right past a soft stop for the regen position for sure, but that has very little to do with how your Kubota works..

I don't feel any difference between the left/right of the joystick. It seems progressive all the way until you can't push it anymore. During all of this with the grapple, I specifically tried to feel a detent of sorts....felt none.

Bucket does dump fast, and is 'loose' at the end of the dump....has some swing. I use that all the time, especially with the grapple to try and make branches etc let go and fall...so I typically 'bang' the bucket/grapple against the stops.

It seems the fast dump is all the way to the right on my M7040.

Work I did this morning went smoother, I wasn't making as many mistakes with the wrong position of button/left/right, short of it I could tell I was getting use to it. If I had to do again, I'd do a 3rd function, may still, but really don't think I can justify it.

 

[k0ua]

I don't feel any difference between the left/right of the joystick. It seems progressive all the way until you can't push it anymore. During all of this with the grapple, I specifically tried to feel a detent of sorts....felt none.

Bucket does dump fast, and is 'loose' at the end of the dump....has some swing. I use that all the time, especially with the grapple to try and make branches etc let go and fall...so I typically 'bang' the bucket/grapple against the stops.

It seems the fast dump is all the way to the right on my M7040.

Work I did this morning went smoother, I wasn't making as many mistakes with the wrong position of button/left/right, short of it I could tell I was getting use to it. If I had to do again, I'd do a 3rd function, may still, but really don't think I can justify it.

Ok thanks for the info.

 

[J_J]

Is there anyone willing to switch the diverter grapple hose on their diverter valve to see if the same conditions exist as jcommins setup?

I am curious as to the volume of fluid in the base end going into the rod end.

Question is, will it work at all, or work fine with no problems.

All you should have to do is switch hoses at the diverter valve.

 

[Xfaxman]

Is there anyone willing to switch the diverter grapple hose on their diverter valve to see if the same conditions exist as jcommins setup?

I am curious as to the volume of fluid in the base end going into the rod end.

Question is, will it work at all, or work fine with no problems.

All you should have to do is switch hoses at the diverter valve.

Also any one with a regen loader valve that would switch the hoses to the bucket?

That would prove my theory right or wrong.

 

[boggen]

hookup hoses from rear end for the 3pt, and run them to the diverter valve perhaps? that would by pass loader valve, and hopefully rear 3pt hyd connections use a generic valve.

when looking at the diverter valve, i saw mention in thread for P1 and P2, but no other lettering for the other 4 ports on the diverter valve, most valves i would like to think has some sort of lettering / marking on the valves themselves. example A,B,P,T perhaps p1, p2, t1, t2, a and b ports.

 

[Xfaxman]

hookup hoses from rear end for the 3pt, and run them to the diverter valve perhaps? that would by pass loader valve, and hopefully rear 3pt hyd connections use a generic valve.

when looking at the diverter valve, i saw mention in thread for P1 and P2, but no other lettering for the other 4 ports on the diverter valve, most valves i would like to think has some sort of lettering / marking on the valves themselves. example A,B,P,T perhaps p1, p2, t1, t2, a and b ports.

His diverter valve outputs are C1, C2 to the bucket cylinders and C3, C4 to the grapple.

 

[k0ua]

hookup hoses from rear end for the 3pt, and run them to the diverter valve perhaps? that would by pass loader valve, and hopefully rear 3pt hyd connections use a generic valve.

when looking at the diverter valve, i saw mention in thread for P1 and P2, but no other lettering for the other 4 ports on the diverter valve, most valves i would like to think has some sort of lettering / marking on the valves themselves. example A,B,P,T perhaps p1, p2, t1, t2, a and b ports.

There would not be a need for a diverter valve if he used the rear remotes, but I think his rear remote lever is not so convenient to use. He was looking for a quick way to switch functions while keeping his hand on the joystick.

 

[jcummins]

There would not be a need for a diverter valve if he used the rear remotes, but I think his rear remote lever is not so convenient to use. He was looking for a quick way to switch functions while keeping his hand on the joystick.

And I had no rear remotes open. Have 2, but tied up with TNT.

 

[SSdoxie]

Also any one with a regen loader valve that would switch the hoses to the bucket?

That would prove my theory right or wrong.

Your theory is correct. I swapped the QDs to bucket at loader valve. With loader arm lifted about 2 ft. off the ground, move lever to left - bucket dumps fine. Move lever right without going into Regen - curls back fine, move lever to far right into Regen - buckets stops curling back momentarily then dumps and when bucket touches the ground it tries to lift front of the tractor but not enough work force to get front wheel off the ground.

A grapple cylinder will not retract when used in Regen mode. This is not due to volume of oil moving but is due to difference in piston area surface differential on each piston. Base end has more area thus more force so when in Regen both sides are equal, the piston will move outward. Example: 2" diameter cylinder with 1" rod. The surface difference is 2.355 sq/in. @ 1000 psi there is 2355 lb. force pushing out, only way the rod could begin to retract is if there was more than 2355 lb. weight pushing in on the rod.

JC, you can use the grapple the way you want to plumb it you just have to figure out where the lever position is in "dump" without being in Regen mode.