Hi, have been working on a project to replace my boom valve body with a joy stick valve. I found a 480b and pulled the boom valve and stabilizer valve. I installed everything in my 580b and now i can only get the stabilizers to work. When i try to energize the boom the pump dead heads. I used the port on the stabilizer valve marked BYO to feed the main valve. I called coleman for a sleeve for the power beyond port but he said the 480 does not show a part for that valve. I must have a plumbing issue, does anyone know if i should go to the main valve first and then to the outrigger valve. The loader works fine.
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