Proposed experiment to test if the restrictor's purpose is to limit the speed of response of the PS system: Two vans, one with an orifice and one without an orifice in the PS high pressure supply line are parked in neutral with the parking brake engaged and with the engine idling at 4200 rpm. The steering wheels are turned hard-to-left. The drivers turn the steering wheels as quickly as possible all the way to hard-to-right and report: a. the amount of time to go hard-stop to hard stop (get an assistant to run the stop watch); b. the required number of turns, hard-stop to hard-stop (just for a check); c. the "feeling" of the steering wheel during the quick movement from hard-stop to hard-stop. Notes: Ideally: 1. Both vans will have OEM PS systems, one with the orifice and one with the orifice removed; or, both vans will have Frank's hoses, one with orifice, one without. 2. Drivers will be of equal strength; or better yet, the same person will conduct the test in both vans to report the difference in "feel" of the systems. Gone too far, Gab ps -- Answering my own question: I'm sure there is not a pressure regulator -- no one has mentioned one.
On Wed, Jul 11, 2012 at 9:50 PM, Gab and Em <shoesandbikes@gmail.com> wrote: > Question: > Is there a pressure regulator upstream of the orifice to vent PS fluid > from pump discharge back to pump suction? > > |
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