Loader removal: what to do with hydro lines?

[RickB]

Thanks MtnView, figuring out the couplers and hoses wont be a problem. Essentially your saying to plumb the supply back into the return when the loader is off, right? Ok, lets say I do that and it turns out we're wrong about being open center, will it hurt anything? I wish there was a way for me to confirm that its open center

The 1st pic below is the supply & return at the loader valve, 2nd is the supply coming out of the tractor's system, and 3rd pic is the return below the axle
View attachment 627119View attachment 627120View attachment 627121

It is open center. The system will function properly with the loader supply and return lines looped. If you run the tractor with the hoses disconnected you will ruin the pump in short order.

Your confirmation is the reference to tractordata.com and the unanimous responses you have received here.

 

[MtnViewRanch]

Thanks MtnView, figuring out the couplers and hoses wont be a problem. Essentially your saying to plumb the supply back into the return when the loader is off, right? Ok, lets say I do that and it turns out we're wrong about being open center, will it hurt anything? I wish there was a way for me to confirm that its open center

The 1st pic below is the supply & return at the loader valve, 2nd is the supply coming out of the tractor's system, and 3rd pic is the return below the axle
View attachment 627119View attachment 627120View attachment 627121

All you are doing by connecting the 2 is removing the valve. You will not hurt anything if it is actually a closed center system, you just will not be able to have pressure on any other valve.

Remedy if it is a closed center system, disconnect the loop.

 

[68Futura]

Ok, and from what I just read, power beyond is a constant flow deal, so I would have to loop the supply back to the return to complete the circuit. Correct?

 

[MtnViewRanch]

Ok, and from what I just read, power beyond is a constant flow deal, so I would have to loop the supply back to the return to complete the circuit. Correct?

Is there a 3pt hitch on this tractor?

 

[68Futura]

It a does have a 3 pt hitch with aux hydraulics.

Ok, thats what I was looking for- knowing that if I loop it it wont damage anything either way. I will do that. Thanks everyone!

 

[MtnViewRanch]

It a does have a 3 pt hitch with aux hydraulics.

Ok, thats what I was looking for- knowing that if I loop it it wont damage anything either way. I will do that. Thanks everyone!

Again, all the recommendations are based on an open center system. Tractor Data has been know to have in accurate information before. If you do what I have recommended, no damage will occur. Again, if it is not an open center system and is a closed center system, simply unplug the lines from each other and you should then be good to go.

 

[oldnslo]

Where is the relief valve located in this circuit? If in the loader valve you will need to install a relief that is not removed and protects your system if the newly installed quick disconnects uncouple while the engine is running

 

[RickB]

Again, all the recommendations are based on an open center system. Tractor Data has been know to have in accurate information before. If you do what I have recommended, no damage will occur. Again, if it is not an open center system and is a closed center system, simply unplug the lines from each other and you should then be good to go.

I have zero doubt this tractor is open center. IH never had closed center or PFC systems in a 3 or 4 cylinder tractor and introduced PFC in 6 cylinder tractors until about 1980. They never used a pure closed center non load sensing system.