How do i utilise my backhoe hydraulics to power my FEL.

[Rob]

Hi guys and good evening to you all.
I had a mad idea last night for a modification to my B6000 but the more complicated issues have gone completely out of my head now, so can any of you guys help me out on this idea please.
What I want to achieve is this, as with most owners of the smaller and older “B” series tractors, using a FEL without its own dedicated pump & reservoir can lead to a very slow loader, they work great but are just slow.

My KB450B FEL is plumbed into the high pressure line directly from the engine pump and then from the spool valve to the rear 3pt hitch, like I said it works well but is painfullyslow sometimes, well most of the time to be honest.
So my idea was to be able to utilise my rear backhoe’s (KB180) self contained hydraulics when the backhoe was fitted to the tractor to power the FEL and a hydraulic tipping trailer supply.

This then would surely give the all implements etc on the system a decent boost in speed etc when the backhoe is fitted, but I would still want to be able to use the FEL back on the original onboard tractor circuit when the backhoe was removed.
The specs of the backhoe are: operating pressure-1800psi, flow rate@1000rpm(pto) 4gpm , with a system capacity of 4 gallons.

I am sure this is possible but I just cant decide the best way to do it so any help and diagrams of connections etc would be really appreciated on this guys.
Thanks again
rob

 

[Rob]

Just a quck update as i forgot to mention it previously.
My FEL spool is a 2 way double acting unit with a power beyond facility and the spool i want to use for my trailer etc is also a double acting unit but a single but also has power beyond port etc.
I was thinking originally that the use of QR connectors on the supply and return lines of the FEL spool valve and also on the backhoe supply and return lines would work well as i would only need to uncouple the 2 lines and re-couple the 2 lines plus the 3pt link to use both systems, when the backhoe is connected the pressure line from the engine hyd pump would just link accross using QR's bypassing the spool but still maintianing the 3pt etc hydraulics, the fel etc would then be running fromthe backhoe's system.
the reverse would happen when the backhoe was removed etc, but i am unsure as to wether this would work also the order of connections to the spool valves etc as the backhoe does not appear to have any power beyond facility.
I think that makes sense....

thanks again
rob

 

[Bulldog]

Plumb it in with remotes like what are on the rear of most tractors. Have say a male coupler coming from the tractor to a female coupler into the loader. Have a male coming from the loader going into a female which goes to the 3pt. When you are not using the tractor hyd supply for the loader you can simply hook the male coupler coming from the pump into the female coupler going to the 3pt. Now come from the BH system with a male coupler to feed the loader and a female for the return.

The reason for alternating couplers is just to insure nothing gets hooked in the wrong place which would lead to a very ugly system malfunction (hyd oil all over you, tractor and anyone else around)

The main thing to remember is not to try and close a open hyd system. If the tractor is running the hyd oil is flowing. Never try to unhook any of the lines while it's running. Always make sure to hook the return line back to the tractor when it's not powering the loader. You will just be robbing oil from the BH system. "T" in the couplers to the BH already working system. By doing this there will be no need for a return line when you are not using it to power the loader. I don't know if this make any sense or not. Maybe it will help though.