X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from [69.171.58.236] (account marv@lancaironline.net) by logan.com (CommuniGate Pro WebUser 5.0.9) with HTTP id 1130694 for lml@lancaironline.net; Sat, 27 May 2006 23:12:39 -0400 From: "Marvin Kaye" Subject: Re: [LML] Weakening hydraullic pressure over time in IVP To: lml X-Mailer: CommuniGate Pro WebUser v5.0.9 Date: Sat, 27 May 2006 23:12:39 -0400 Message-ID: In-Reply-To: <017301c6817b$361df010$6501a8c0@OFFICE> References: <017301c6817b$361df010$6501a8c0@OFFICE> X-Priority: 3 MIME-Version: 1.0 Content-Type: text/plain; charset="ISO-8859-1"; format="flowed" Content-Transfer-Encoding: 8bit Posted for "Bill&Sue" <5zq@cox.net>: Hi Doug, Sounds to me like the accumulator has lost it's air pre-load. The accumulator should contain both air (compressible) and hydraulic fluid (non-compressible). As hydraulic pressure builds it moves into the accumulator and compresses the air. As hydraulic pressure decreases, the compressed air forces the hydraulic pressure back out. If fluid has leaked into the air side, or if air has leaked out, there would be less gas to compress and you would see the symptoms that you describe. Bill Harrelson N5ZQ 320 1,200 hrs N6ZQ IV 8.003%