Loader Valve / Curl function diagnosis

[GPintheMitten]

I finally got a chance to work on it today. I switched the joystick around and attached my Kubota joystick to it. It definitely changed the functions.

Tomorrow I'll change the hoses around. It should be back to normal then.

 

[Leejohn]

great!

 

[GPintheMitten]

I switched the hoses and the joystick now works the way you would expect...sort of. Forward is down, back is up right is dump and left is curl up.

BUT, if I move the lever forward to far the boom goes up. What the heck did I do wrong.

 

[Leejohn]

Sounds like you have the regen on the boom and the bucket on the float. See if the bucket is in float by back draging in float detent, handle to hard right. Other then that I'm not sure. Just follow the instructions to the T don't skip thru it. After that post back.

 

[LD1]

Certainly sounds like a regen. Regen pressurized both ends of the cylinder, resunt is extension. First detent in that direction should power the base end of the cylinder, sounds like yours is powering the rod end, thus the reversal in direction. But either way, that valve needs to be the curl/dump

 

[GPintheMitten]

Ok. Thanks guys. I'll check that out this afternoon and report back.

Oddly enough, I just switch the hoses yesterday. I guess they were right before.

 

[LD1]

Not familiar with the valve, but it sounds like more than just the hoses. The valve that currently has the up/down hoses with regen needs to be the curl hoses. (and hooked up correctly as I mentioned so regen will work). But simple swapping hoses will make the joystick wrong where up/down would then curl/dump.

Control lever and hoses aside, the one with regen needs to be on curl/dump.

 

[LD1]

I just studied the diagram for a bit and their pictures of A and A1 dont seem to jive. They show the valve spools as being inverted, but both pics show the work ports out the right.

Basically if you look at the spools where the rod end hooks to, the one that has the flats oriented lengthways is for the lift/lower/float. The one that has the flats oriented left and right and nexted to where the fixed rod end hooks, thats your dump/curl/regen valve.

Thats where the diagram gets wonkey, cause in one pic it shows the lift valve next to the in port, the next pic it shows the curl valve next to the in port. Those DONT swap. The regen and float functions are built in and cannot be swapped. All you are doing is changing weather the joystick pushes or pulls on a given spool based on the direction you mount the valve.

So, all that said, here is what I would do:

Now that you know how to tell which spool is the lift and which is the curl, their ports will match up. IE: if the valve is mounted so the lift/lower spool is furthest foward, then you will use the A and B ports that are furthest forward for that function.

So now that you know what pair of hoses go to what function, Make sure the hoses that connect to the BASE end of the cylinders for curl and lift go to the corresponding A ports. And the rod end hoses go to the B ports.

That will confirm the hoses are correct. Anything else from that point that dont work right is something not connected correctly per the A and A1 orientation diagrams.

 

[GPintheMitten]

Thanks for investing the time into helping me, LD1.

And Leejohn as well.

Will report back after I examine it more closely and swap as appropriate.

 

[GPintheMitten]

I switched the hoses. The float is now on the boom and regen on the curl dump.

Now I have to get the joy stick switched up so it makes some sense. After switching hoses, I now have to think every time how to move the joystick to get it to do what I want.

Anyway, switching the joystick is for later this week


Thanks again for everyone who helped.