John Deere 500c hydraulics

[chrisdvorak]

That's what I'm thinking also, on a healthy hyd system how much should the standby pressure go down when a function is activated?

 

[Tx Jim]

I can't remember how much the pressure should drop but I think not close to a 1000 psi. I'll guess it should drop about 200-300 psi then jump back up to stand-by. It's been over 35 yrs since I tested a JD closed-center hyd system so my memory is a little faded.