Tripple selector valve

[Spudland_Dave]

Now I just need to figure out how to eliminate it.
Bill

Let us know, I'm just about ready to pull the trigger on that valve....

 

[6sunset6]

I may have figured out the problem. I went back to SC's web site and reread the specs on this valve again. Here is the last sentence.First selector has a built-in restriction to restrict flow to the actuator (example: for use with a grapple). This is another restrictor not the .045 removable one in P1. Now I just need to figure out how to eliminate it.
Bill

I see it says that but I do not think it is correct. I have attached the Cat information and it does not show anything but the restrictor in P1. That restricts everything, why would they add another restrictor in the first selector?
But then again maybe there is one. But if there was it would work in both directions.

 

[Hooked_on_HP]

Bob, I have the Cat info you provided, which I thank you very much for, and what you are saying makes sense. I wonder where SC got the info on the restrictor. I wish I knew who actuallyt made the valve so I could contact them.
Bill

 

[Hooked_on_HP]

Here is the latest. I moved the hoses for the curl/dump from C1A and C1B to C2Aand C2B and moved the grapple to C1A&B The loader works a whole lot better and now the grapple moves slower closing. So there has to be a built in restrictor in the first selector. I guess I am going to have to disassemble the valve to figure out how they restricted it.
Bill

 

[6sunset6]

It could be the size of the galleys. Thats the porting through the valve body. But I would think taking out the .o45 would open it up. Thats why it's in there.

 

[Hooked_on_HP]

I totaly dissambled the valve . All the passages are the same size. They are restricting the flow through the spool in the actuator. In the fist pic you will see the difference. They are restricting it by making the oil flow through 2 holes drilled in the spool on one end of the valve and on the other end the spool is smaller and the oil flows around the spool. The way this valve works is the spool blocks or opens ports in the outer piece of the valve(dont know the correct name) The big problem I found is that the spool is only opening the lower ports 1/2 way. The upper ports are fully open. This will restrict the flow. I think this is a manufacturing defect. I don't know if this is a problem with all these valves or just mine. I am going to try to machine the outer piece of the valve so the spool goes in farther(about .020) so the ports fully open. I will try to get some better pics tomorrow
Bill

 

[Hooked_on_HP]

Here are some better pics. The 1st pic shows the spool valve. The 2nd shows the spool installed. Notice how the lower ports are partially blocked. The 3rd shows the end of the valve I am going to machine.I need the make the recess about .030 deeper.
Bill

BTW these pics were taken through a magnifing glass.

 

[6sunset6]

Bill, How are you making out?

 

[Hooked_on_HP]

Well Bob, for now I have put it on hold. I am still having the same problems. When I get caught up on things arround here I will play with it some more. I thing I found out by accident was that if you put power to #2 without power to#1 both will function at the same time. When I get back to it I will let you know.
Bill

 

[mgamber]

Is there an update on this? I got mine hooked up today and I think I have the same problem. My curl UP is slower than before. I think I can live with it but would like it to function like it did before.