X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml@lancaironline.net Date: Thu, 12 Jul 2007 18:01:23 -0400 Message-ID: X-Original-Return-Path: Received: from [206.246.194.60] (HELO visi.net) by logan.com (CommuniGate Pro SMTP 5.1.10) with ESMTP id 2172408 for lml@lancaironline.net; Thu, 12 Jul 2007 01:01:50 -0400 Received-SPF: none receiver=logan.com; client-ip=206.246.194.60; envelope-from=rpastusek@htii.com Received: from [69.143.130.212] (HELO DLHTPAX009) by visi.net (CommuniGate Pro SMTP 4.2) with ESMTP id 220396240 for lml@lancaironline.net; Thu, 12 Jul 2007 01:00:42 -0400 From: "Robert Pastusek" X-Original-To: "'Lancair Mailing List'" References: In-Reply-To: Subject: RE: [LML] IV-P Brakes X-Original-Date: Thu, 12 Jul 2007 01:00:46 -0400 X-Original-Message-ID: <024f01c7c441$9bd75f90$d3861eb0$@com> MIME-Version: 1.0 Content-Type: text/plain; charset="US-ASCII" Content-Transfer-Encoding: 7bit X-Mailer: Microsoft Office Outlook 12.0 thread-index: AcfD+jra5Dg5hjKXT56DPzC1z6ro/gARoH9A Content-Language: en-us Bob Comyn wrote: ... I am having a problem with air getting into my IV-P brake system.... Try de-pressurizing your pressure pot and replacing the fluid therein. Re-pressurize the pot only when you are ready to service the brakes, and then de-pressurize it when done. Hydraulic fluid absorbs gas (air) just like almost every liquid--especially if stored under pressure. This gas comes out of solution as you reduce the surrounding pressure (climb to altitude) and doesn't re-absorb under normal atmospheric pressure (on the ground). Therefore the bubbles form and remain in the system. Could be other causes, but if you're storing your servicing fluid under pressure, this is a possible one. Please advise what you find. Bob