Tripple selector valve

[Hooked_on_HP]

I haven't got back to working on it yet. I have kind of been waiting to see if anyone else had the same problem or if it was just me. I think there is a flaw in the first spool valve. When I get a chance I am going to the Cat dealer and see if they stock the first spool valve and see if I can compare them.
Bill

 

[mgamber]

Yes, I believe I have the same issue. Let us know if you find a solution.

 

[George G]

I think I would plug ports C1A & C1B. I would use C2A & C2B for the loader bucket, and use C3A to close the grapple and C3B to open the grapple.

 

[mgamber]

The only problem I see with that is you will always have to have a solenoid energized to use the curl.

 

[mgamber]

Bill,

When you disassembled the valve, did you notice if the 3 selectors are the same? Interchangeable?

 

[George G]

Sound's to me like he wants to use one control valve for two functions. If you hook the grapple to C1A/C1B. When using the grapple, no solenoids need to be energized, When you want to use C2A/C2B or C3A/C3B you will need to have two solenoids energized. So, everytime you change functions, you have to change states of two solenoids. Whats the difference between switching two solenoids, or switching to the one solenoid that you need ?

 

[mgamber]

C1A and C1B are on a solenoid that is normally not energized and allows flow thru the valve ports. You only apply power when you want these ports closed.

 

[George G]

No matter which way you do it. You will be shifting solenoids every time you change functions. In truth table #1 you would be using C1A/C1B & C2A/C2B Not C3A/C3B. In truth table #2 you would be using C2A/C2B & C3A/C3B. Not C1A/C1B.

 

[mgamber]

George,

No one is arguing the need to activate 2 solenoids to change function. The problem is you only need the action of the grapple for a very short period, plus when the grapple is not attached and you are using the bucket you will never use that second function.

It is probably not a good idea to be sucking 12v power to keep the 2 solenoids actuated under the normal use situation. It may or may not shorten the life of the solenoid (after all it is just an electromagnet) but it is certainly using energy when it should not be needed.

 

[SkogenMe]

George,

No one is arguing the need to activate 2 solenoids to change function. The problem is you only need the action of the grapple for a very short period, plus when the grapple is not attached and you are using the bucket you will never use that second function.

It is probably not a good idea to be sucking 12v power to keep the 2 solenoids actuated under the normal use situation. It may or may not shorten the life of the solenoid (after all it is just an electromagnet) but it is certainly using energy when it should not be needed.

Great discussion...I have been looking at a Land Pride RBT3584 rear blade and was wondering about powering the hydraulic functions. I had come across the SC triple valve but I am even more electrically challenged than hydraulically. What I was looking to do was have one circuit power three functions - 1) blade angle 2) blade offset and 3) blade tilt. If I read the description right, I could have angle in the unpowered state and then the various combinations to power the other two combinations. What sort of electrical selector switch have people used?
Does this seem workable? It would mean one electrical connection and one hydraulic connection to hook up the implement but seems doable.
thanks for the thoughts.