I've been a reader for a while, but just registered now to ask this question. I have a '88 JD750 with P/S and a FEL. I just finally got a
model 7 backhoe after finding a good one at a reasonable price after maybe 5 years (yes, more patience than money!)
anyhow I want to add rear hydraulic connections for the backhoe hoses. - I've read a bunch of threads and I think I almost have it after reading this one
My question is, using the below diagram from the 750 manual, is it correct to just disconnect the line marked U (PB line at the bottom of the loader valve) from the rockshaft housing (V in the picture), connect that line U to the backhoe inlet, and connect the backhoe outlet to where I disconnected the U line from (V on the rockshaft). ? Of course using proper fittings, hoses, etc.
I am assuming the backhoe is open center and will allow fluid flow to circulate as it always did before the modification, and I also assume that I will need to attach a jumper line when the backhoe is off from my new connections.
Am I correct, or way off ? I am confused because I am thinking of the backhoe valve stack to be similar to the loader valve and that has a return to reservoir line. Wondering why I don't need that on the backhoe (since there are only two lines)
Thanks for the help in advance , I have learned a lot from you guys over the years!