The 1500 psi is only between the high pressure side of the pump and the PS rack. After coming out of the rack it is low pressure. Thus the plastic reservoir holds it quite nicely. Many hydraulics run at 1500-3000 psi, some higher. Normal stuff for hydraulics. Probably a bigger problem with the PS system is that the oil is not filtered and most of us rarely change the oil. Vane type pumps (the kind that are in the Van) need very clean oil. The pressure relief valve allows the pump to "idle" and spin but not pump as the pressure reaches a certain level (or perhaps the flow gets reduced, I am not clear on this). I would suspect dirty oil would be harmful to the pressure regulating valve, as it would to the seals in the entire PS system. Keep it clean, don't worry about the pressure sounding high. It's normal. Myron Lind Harrisonburg, VA 1982 Diesel getting mechanical TDI -----Original Message----- From: Vanagon Mailing List [mailto:vanagon@gerry.vanagon.com]On Behalf Of s w Sent: Thursday, June 27, 2002 11:47 AM To: vanagon@GERRY.VANAGON.COM Subject: Re: PS pump pressure testing?
> Bentley says that the appropriate pressure should be > around 1500 PSI! just a question, maybe a dumb one at that...but i just have to ask...how is it that our little plastic power steering resevoir's can handle that pressure? assuming that in a sealed system the pressure would be the same throughout...anybody??? ===== Scott Wilson 85 GL Westfalia __________________________________________________ Do You Yahoo!? Yahoo! - Official partner of 2002 FIFA World Cup http://fifaworldcup.yahoo.com |
Please note - During the past 17 years of operation, several gigabytes of
Vanagon mail messages have been archived. Searching the entire collection
will take up to five minutes to complete. Please be patient!
Return to the archives @ gerry.vanagon.com
The vanagon mailing list archives are copyright (c) 1994-2011, and may not be reproduced without the express written permission of the list administrators. Posting messages to this mailing list grants a license to the mailing list administrators to reproduce the message in a compilation, either printed or electronic. All compilations will be not-for-profit, with any excess proceeds going to the Vanagon mailing list.
Any profits from list compilations go exclusively towards the management and operation of the Vanagon mailing list and vanagon mailing list web site.