4540 montana with loader hydraulic issues

sdi87 · Feb 12, 2015

hi all my dad bought a 2005 montana 4540 tractor made by LG the tractor was a one owner with 97 hours on it. It never had a loader on it so he bought a 2010 LS loaderand put on it, LS is pretty much the same tractor. The loader is bolted on the tractor, the problem we are having is with the hydraulics, in order to use the front end loader we have to pull up left remote lever to make the loader work, which my dad thinks that keeps the hydraulic pump loaded and it wont relief pressure. The way it is hooked up is there is a silver block under the passenger side foot board, which I was told was specifically for the loader, there are 3 ports on the front of that block upper left is labeled with an R which I assume is return line, lower left corner is labeled with a T which im assuming power beyond or to the pump, and upper right corner is labeled p2 which is pump or power beyond, we do not know which ports go to which. The loader is an LS LL 3601 model loader, the instructions with the loader did not tell us, nor did the the manuals or repair manuals with the tractor. The people he got the load4er from where no help either I have been researching this for a week with no help, if any body has any information on where the loader hydraulics should hook up please for the love of god help thanks and god bless.

J_J · Feb 12, 2015

Just an educated guess, but the T would be the tank port.

The P2 might be the pump in to the loader valve. To verify, remove that hose and place in a bucket and start engine. If fluid flows out, then it is the pump flow.

The R might be the PB or return or high pressure flow.

sdi87 · Feb 12, 2015

Thanks i appreciate it, yea we have swapped those lines around adozen times, i wish i had a diagram of a 4540 montana with the factory front end loader hydraulics, if any body has that model tractor with a front end loader could you please tell me how your hydraulics are hooked from the tractor to the loader it would be greatly appreciated! !