Kioti CK3510 3rd Function Issue

[Kioti_Cole]

I have a 2021 Kioti CK3510HST with factory rear remote hydraulics installed to run a backhoe. I decided to add a third function kit to the front end loader to run a grapple. I went with a third function kit from Summit Hydraulics. The kit runs the grapple just fine but the problem is that I lost the majority of my hydraulics to the backhoe after installing the kit. The backhoe operates extremely slowly and lacks power (the outriggers won’t even lift the tractor anymore).

I have attached a diagram that I drew showing how I plumbed the kit in. What I did is remove the factory hard line going from the port labeled “T” on the loader valve that goes into one of the top ports of the rear remote valve, basically putting the third function valve in series. I explained to the service guy at my local dealer how I installed it and he assured me that that I had it plumbed correctly and suggested an issue with the third function valve not allowing enough fluid to flow through. To test this theory I put quick couplings on the two hoses going to the third function so that I could couple them together and create a loop taking the third function out of the equation. By doing this the backhoe picked a little bit of speed (not much) but it still lacks power. I suspect that the distance of hose is not able to carry the volume of hydraulic fluid that the short hardline can.

If the way I have everything plumbed is actually correct, why would I be having is issue? Is there another way of hooking the third function or maybe a different set of ports that I could hook into that would separate the third function from the fluid supply to the rear remote (leaving the factory hard line intact)? I know I can’t be the only one that has come across this issue.

Thanks in advance!

 

[oldnslo]

The valves need to be connected in series on machines with a fixed displacement pump.

On most tractors the flow goes from pump to the front loader valve. Then power beyond from loader valve supplies next valve which in your drawing was the rear remotes. Typically power beyond from rear remotes supplies flow to the 3 point hitch.
You need a power beyond option the 3rd function so that it can be in series.

Typical plumbing would be power beyond from loader valve to pressure port of 3rd function, power beyond of 3rd function to pressure port of rear remotes. The tank line of loader valve must go directly to tank. Depending on style of 3rd function it may also require a tank line going directly to the tank. This can be teed into the tank line from loader valve.

Hope this all makes sense.