In Reply to: Re: Hydraulic Lift,,,again ! posted by Charles (N.C.) on May 11, 2017 at 21:14:03:
With the lift arms chained down the pump should produce at least 1500 psi at the est port.
If you do not have the FO-4 service manual, now would be a real good time to get one.
It has a real good section on the hydraulic system.