John Deere Power Beyond Questions

[B350driver]

I am trying to attach a 3 line backhoe to a John Deere 4066R Cab tractor with Power Beyond. Here are the instructions copied directly from the Owners Manual:

1. Shut off engine.
2. Remove hose (A) from coupler (B).
3. Remove outlet cover (C) and place hose (A) into cover.
4. Attach implement pressure hose to power beyond coupler (B).
5. Attach implement return hose to coupler (D).
NOTE: When not in use, plug hose end into coupler for storage.



My backhoe has 3 lines, 2 input, one return. I connected the two input lines together (with a T) and hooked them up to the P line ("B"), and the return line to Coupler "D" which is return to tank. Per the instructions this leaves Hose "A" disconnected. When connected this way, all backhoe functions work fine, but I lose the 3 point and the ability to lower my FEL. I know this is because Hose "A" is disconnected.

Is there a way to hook this up properly where hose "A" remains in the loop so I do not lose any functionality? I cannot understand why John Deere would instruct the user to leave "A" disconnected.

 

[oldnslo]

Does your backhoe valve have a power beyond option? If yes this could be connected to A for the 3 point supply.

Can you even use the 3 point with the backhoe mounted?

Hose A disconnected should not prevent the FEL from lowering. The FEL valve should have a line that connects to tank.

 

[B350driver]

Thanks for your reply! Due to the fact that the FEL will not lower, I am thinking I mixed something up when I installed the factory Power Beyond loop. I will go back and double check, but the lines that came with the kit were pre-bent, and it seemed they would only go one way. I can live without the 3 Point when hoe is attached. I just used it to raise and lower. Thanks again!

 

[oldnslo]

B350,
Did all of the other functions on the FEL work properly? If yes this indicates a problem in the raise lower circuit and not a tank line issue. I would start by disconnecting and reconnecting the quick disconnects for the raise lower function.

 

[Zebrafive]

Are you sure your back hoe has two pressure lines? Not a pressure, return and power beyond line?

 

[LD1]

Are you sure your back hoe has two pressure lines? Not a pressure, return and power beyond line?

Was wondering the same thing?

 

[B350driver]

I think you guys have solved it! I was told by the back hoe sales rep, that there were 2 pressure inputs and one return. I think in fact that it is as you guys suggest. The three lines are color coded with tie wraps: Green, Yellow, and Red. Is there some industry color code standard? I assume the power beyond line would plug into "B", the Return to "D", and the other line to "A". This would keep the loop intact, making the 3 point and FEL working. You guys are great!

 

[oldnslo]

B350
I do not know if there is any color standard but can you look at the back hoe valve? If yes are the ports labeled on it.

Still doubt any of the hoe connections would prevent the FEL from lowering

 

[LD1]

Not sure if it's industry standard or not....

But my Kubota, green was pb, red was pressure. White was my return. But they were color coded with electric tape, and my white could very easily have been yellow that faded.

Look at where they physically go to on the valve. The valve should be marked or cast into it.

I see no reason why your backhoe would have two pressure lines.

And having them tee'd as you do....I would have thought would dead-head your tractors pump and force all the flow across the relief.

Cause the PB port on the backhoe IS the return path for the oil when you are not using one of the backhoe functions.

When using a function....the return is the actual return path

 

[B350driver]

Thanks LD1, I was led astray with the incorrect statement that I had two pressure lines. Just to be crystal clear, would you mind specifying exactly where each BH line connects on the Diagram above. I just want to make sure I have it connected properly.