I have this posted on another forum too. Any education would be nice. I have a tractor that i do not understand how the pressure relief valves would work. With a open center system and i dont see a check valve how does parts of the system actually get to the higher pressure. I have attached the hydraulic flow chart and a picture of the valve bank. There is also a picture of a check valve that my backhoe does NOT have. The reason i posted it because this made complete sense to me. Mine does not have that so how in the heck does the rest of the system ever get to have higher pressure. Sorry this does not make sense to me at all.
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