massey ferguson 180 hydraulic pressure

[Tractor1955]

I have a massey ferguson 180 1966 model that i just bought.It is a project tractor with a few issue.I am getting ready to split it to work on the hydraulics.I attached a tester to the remote hydraulic outlet and got 1500 psi.is that enouth?I attached the the gauge to the outlet on the left side of the tractor that comes from the auxilliary pump to the multipower and got 0 psi. If i understand how the hydraulic work on this tractor the auxilliary pump powers the remote hydraulics and the multipower Why am i not getting any psi at the multipower?just like to know what i will find when i split the tractor