Hydraulic top link issues

[Kodiak45]

Just so we are clear and everyone is on the same page. ----There are only 2 ports on the cylinder.
-the fluid flows both in and out of these ports.
-The way to control the inflow or exhaust is by turning the desired restrictor device around as the opposing flow is not controlled.

So there will be a flow control device on both ports, it's just a matter of whether the flow going in the cylinder is controlled or the flow going out and the best method is controlling the outflow/exhaust.
Is this accurate?
The more I think about it, the more it makes sense. Nothing is as simple as it seems.

 

[LD1]

Just so we are clear and everyone is on the same page. ----There are only 2 ports on the cylinder.
-the fluid flows both in and out of these ports.
-The way to control the inflow or exhaust is by turning the desired restrictor device around as the opposing flow is not controlled.

So there will be a flow control device on both ports, it's just a matter of whether the flow going in the cylinder is controlled or the flow going out and the best method is controlling the outflow/exhaust.
Is this accurate?
The more I think about it, the more it makes sense. Nothing is as simple as it seems.

Yes its typical that the exhaust is what gets metered for speed control.

I the scenerio as it relates to the toplink, FULL FLOW going into the cylinder to extend is STILL not enough to keep up with what is leaving. Thus the issue people are experiencing in this thread.

Need to make that flow leaving, leave SLOWER, so the fluid coming in has time to fill the cylinder and not draw a vacuum/suck air.

 

[Fallon]

Does anyone know how much vacuum (negative pressure) is needed to cavitate hydraulic fluid?

Atmospheric pressure is just under 15psi. So it's a pretty safe assumption it's somewhere under -15psi.

 

[Luke'sScreenName]

Atmospheric pressure is just under 15psi. So it's a pretty safe assumption it's somewhere under -15psi.

Thanks.

 

[Kodiak45]

 

[Kodiak45]

We are rock solid now. Thanks for all your help

 

[ovrszd]

We are rock solid now. Thanks for all your help

Glad it worked for you!!!! And these are adjustable valves??

No criticism here, just an observation. You may want to put a longer hose on the barrel end. The prying pressure of that hose trying to straighten is being applied to your quick coupler joint. Might see an eventual failure or leakage.

 

[Kodiak45]

Glad it worked for you!!!! And these are adjustable valves??

No criticism here, just an observation. You may want to put a longer hose on the barrel end. The prying pressure of that hose trying to straighten is being applied to your quick coupler joint. Might see an eventual failure or leakage.

yes they are adjustable. I'm glad you think that hose needs to be longer. I was thinking the same thing. That's the next to do for next week, but today I'm going to enjoy the box blade and the hydraulic top link.

 

[ovrszd]

yes they are adjustable. I'm glad you think that hose needs to be longer. I was thinking the same thing. That's the next to do for next week, but today I'm going to enjoy the box blade and the hydraulic top link.

Yep, I would too. You deserve some quality tractor time!!!

 

[LD1]

Money well spend IMO.

There was never anything mechanically wrong with your system. Just a flow problem. Good work and I think you will like the adjustable valves.