Replacing JD 520M FEL Hydraulic Hose

[Cedar Pete]

Hey Folks! Hoping somebody has a shared experience and can advise. I blew a hydraulic hose for FEL lift (extend, marked blue) near the big hose valve at the tractor interconnect. I've looked at JD diagrams and discovered a few things.

They run their lines inside the steel arm tubes to the front of the FEL. It appears that i need to access that somehow or otherwise break a line connection that appears to be inside that rectangular tube. Does anybody know the magic trick to do this? Maybe disconnect the short connecting hose 14 at the cylinder, and pulling it out with hose 13? Don't I need to pull a line of some sort thru as I remove the hose, so i can pull the new hose thru?

The drawing shows the right side blue extend (line with the valve) having an inline T port that attaches a short connecting hose 14 to the FWD end of the main right arm cylinder. A red connector is on the REAR of the right cylinder. Their dwg then shows the blue line crossing to the left and connecting to the left main arm cylinder, to the REAR port. My tractor actually has a red hose marking on that port, and a blue marking on the FWD port. I can't see or disassemble the hose if I don't know which end to break and connections are inside this arm. I think the hose part 13 is drawn incorrectly, and should be shown connected to the FWD left arm main cylinder port. What do you think?

Thanks in advance!

 

[ptsg]

Checking the parts catalog, if you remove the cover on the loader cross member, it should give you the necessary access to the other end of that hose.

Also, you don't have to pay those crazy $250 for simple hose. You can go to an hydraulic shop or parts store that will make hoses and have them make you a new hose for much less money.

And yes, before removing the old hose, tie a wire or rope into it, them remove and leave the wire in. So you can then pull the new hose with the wire or rope.

 

[Cedar Pete]

Checking the parts catalog, if you remove the cover on the loader cross member, it should give you the necessary access to the other end of that hose.

Also, you don't have to pay those crazy $250 for simple hose. You can go to an hydraulic shop or parts store that will make hoses and have them make you a new hose for much less money.

And yes, before removing the old hose, tie a wire or rope into it, them remove and leave the wire in. So you can then pull the new hose with the wire or rope.

I found a different drawing that I think is correct. It shows the blue extend port going to the boom cylinders connected to the fwd port on each cylinder, as I'd expect. Hose is item 9. I can remove the far end on the left cylinder and i guess try to pull it all back out from inside the arms, back toward the valve. I don't see any way to access the inline connection between hoses 9 & 10 prior to removal - it's completely inside the arm.