Finally, Hydraulic Backhoe Stabilizer Locks, Lift and Lock,

[WaxMan]

I guess I'd wake her up after standing there dumbfounded for awhile.

bumper

And then you both would go back and read my thread again right?

 

[WaxMan]

So I just finished putting it all back they way I had it with the shut off valves like they were.

Can we all agree with the valves closed and operating the tractor would be no problem at all.
and the only time there would be a problem is when the valves are closed and you try and lower the outriggers.
Correct?

Last question what is the maximum pressure a cylinder like that can hold? 3000 4000 5000 ? You saw the video was that over pressure for that piston?

 

[chopped]

I would agree with this, and also add that if you got in the habit of setting the riggers at idle then you'd really not have to worry..

So I just finished putting it all back they way I had it with the shut off valves like they were.

Can we all agree with the valves closed and operating the tractor would be no problem at all.
and the only time there would be a problem is when the valves are closed and you try and lower the outriggers.
Correct?

Last question what is the maximum pressure a cylinder like that can hold? 3000 4000 5000 ? You saw the video was that over pressure for that piston?

 

[kennyd]

I would agree with this, and also add that if you got in the habit of setting the riggers at idle then you'd really not have to worry..

Why? Pressure is constant, only the flow is variable with RPM.

 

[chopped]

Oh I thought the pressure on the gauge was lower with the idle then when he kicked it up it went higher? ??

Why? Pressure is constant, only the flow is variable with RPM.

 

[chopped]

Oh i watched it again , with the higher idle, it only went up slightly..

 

[J_J]

As I said before, a relief valve across the cyl would provide safe operation or warning..

 

[WaxMan]

As I said before, a relief valve across the cyl would provide safe operation or warning..

How would I go about that. Is there a small inline in and out relief valve?

 

[J_J]

Relief valves.

Surplus Center

 

[dfkrug]

Did you say this right?
I have the valve on the piston rod end now.
The first part of the video shown is on the bottom of the cylinder. While it had the relief valve I don't think
the fluid is leaking by that end. I still think the outriggers would drop if installed on that end. I guess I could
try it.

Yes, I saw your ball valve was on the rod side. You can try the base end instead, but unless the
piston seals are in near-perfect shape, the outriggers will still drop when air is drawn in thru the
gland seals. Since your tractor is pretty new, I would be curious as to how well a base-side cutoff
would work. Maybe well enough.

BTW, my calc above is off a bunch, cuz I was too fast: the rod-end piston area for a 2" bore
cyl is 3.14 - 1.2 or 1.9sqin, so the pressure multiplication should be about 6280/1.9, or 3300psi. So
your test gauge pressure was in that neighborhood.

Kubota's cyls are prob rated for 3000 psi.