uh.. chain.. that's that heavy linked stuff.. you know.. chain.. :)
down, and in not being able to move up.
lift arms. as in those things on the splined rockshaft that are on either side of the lift cover.
slip a chain around the axle tgrumpet and thru the lift arm knuckles so that the arms cannot rotate up.. that then will allow you to read pressure on a 3000psi gauge plumbed into the test port with an orb fitting..