Randy

Randy CR292 · Jan 2, 2020

Hi, i live in Texas, need some advice on how to hook up hydrolics to my 4550 4wd mahindra,i'm hooking a bradco 590 backhoe to my skid steer hook up on front in loader.I already have a third founcition,any help would be appreseated ,Thanks

K5lwq · Jan 2, 2020

Welcome Randy to TBN! What are you using for third function? Electric over hydraulic? One button and move the handle as in a diverter valve? Or two buttons, one opens the other closes as in true 3rd function?

Most backhoes would use continuous flow to the backhoe's valve. This is normally done using power beyond which is not the same as a third function set up.

Randy CR292 · Jan 3, 2020

K5lwq said:
Welcome Randy to TBN! What are you using for third function? Electric over hydraulic? One button and move the handle as in a diverter valve? Or two buttons, one opens the other closes as in true 3rd function?

Most backhoes would use continuous flow to the backhoe's valve. This is normally done using power beyond which is not the same as a third function set up.

I have a two button ,need to know how to hook up continuous flow ,backhoe has its on controls,thanks

K5lwq · Jan 4, 2020

Ok. That is true function. The best plan would be locate the power beyond line coming off the loader. Install quick connects on the loader valve and power beyond hose. These need to be connected to each other when not using the backhoe.

Locate the tank line off of the loader valve and install a hydraulic rated tee. The loader valve tank port will stay connected through the tee to the tank hose. Then install another quick disconnect off of that tee.

Then there should be a power port, power beyond port and tank port coming off the backhoe valve. If that is the case, you need to run 3 hoses from the backhoe valve to the quick connection you added of the loader valve. These lines will need have male and female ends to make sure they are connected correctly on the power line and power beyond line. The power line will need to plug into the loader valve power beyond QC. The power beyond from the backhoe valve will need to plug into the power beyond hose QC that normally goes to the loader valve.

The tank line from backhoe valve will need to go to the tee QC installed earlier. This will complete the circuit and allow for proper operation.

If you post pictures of the valves that will help us make sure we guide you correctly.

The backhoe valve may not require the tank line, but it is important to know for sure it is designed to handle the back pressure in the event you use another valve downstream. i.e. 3pt hitch. Hopefully this gives you some direction but if this is not done properly, you will damage your hydraulic system.

Randy CR292 · Jan 4, 2020

K5lwq said:
Ok. That is true function. The best plan would be locate the power beyond line coming off the loader. Install quick connects on the loader valve and power beyond hose. These need to be connected to each other when not using the backhoe.

Locate the tank line off of the loader valve and install a hydraulic rated tee. The loader valve tank port will stay connected through the tee to the tank hose. Then install another quick disconnect off of that tee.

Then there should be a power port, power beyond port and tank port coming off the backhoe valve. If that is the case, you need to run 3 hoses from the backhoe valve to the quick connection you added of the loader valve. These lines will need have male and female ends to make sure they are connected correctly on the power line and power beyond line. The power line will need to plug into the loader valve power beyond QC. The power beyond from the backhoe valve will need to plug into the power beyond hose QC that normally goes to the loader valve.

The tank line from backhoe valve will need to go to the tee QC installed earlier. This will complete the circuit and allow for proper operation.

If you post pictures of the valves that will help us make sure we guide you correctly.

The backhoe valve may not require the tank line, but it is important to know for sure it is designed to handle the back pressure in the event you use another valve downstream. i.e. 3pt hitch. Hopefully this gives you some direction but if this is not done properly, you will damage your hydraulic system.

There are two lines coming from backhoe,it was used on kabota front skid steer attachement,thanks

K5lwq · Jan 4, 2020

If that is the case, then you will not need to tee the tank line. However, I still would want to verify you don't need the tank line on the valve. There probably is a tank port with a plug in it on the backhoe valve. Either way, you will not be able to use the 3rd function valve.

Where in TX are you located?

ptsg · Jan 4, 2020

If I understand correctly, you want to attach the backhoe to the loader using the Skidsteer quick attach? It might work on a skidsteer but I wouldn't do it on a tractor loader. It's just too much stress for the curl cylinders.

Randy CR292 · Jan 5, 2020

K5lwq said:
If that is the case, then you will not need to tee the tank line. However, I still would want to verify you don't need the tank line on the valve. There probably is a tank port with a plug in it on the backhoe valve. Either way, you will not be able to use the 3rd function valve.

Where in TX are you located?

jasper

K5lwq · Jan 5, 2020

Randy CR292 said:
jasper

Close enough. If you run into issues just let me know and I will be glad to help. Also, ptsg makes a great point. Be careful not to overload your loader.