X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml@lancaironline.net Date: Fri, 06 Feb 2009 19:35:25 -0500 Message-ID: X-Original-Return-Path: Received: from ndmsnpf03.ndc.nasa.gov ([198.117.0.123] verified) by logan.com (CommuniGate Pro SMTP 5.2.12) with ESMTP id 3480562 for lml@lancaironline.net; Fri, 06 Feb 2009 17:53:15 -0500 Received-SPF: none receiver=logan.com; client-ip=198.117.0.123; envelope-from=Michael.S.Reinath@nasa.gov Received: from ndmsppt02.ndc.nasa.gov (ndmsppt02.ndc.nasa.gov [198.117.0.101]) by ndmsnpf03.ndc.nasa.gov (Postfix) with ESMTP id 18E772D8030 for ; Fri, 6 Feb 2009 16:52:38 -0600 (CST) Received: from ndmsxgw03.ndc.nasa.gov (ndmsxgw03.ndc.nasa.gov [129.166.9.161]) by ndmsppt02.ndc.nasa.gov (8.14.1/8.14.1) with ESMTP id n16MqbpH028623 for ; Fri, 6 Feb 2009 16:52:38 -0600 Received: from NDMSEVS34B.ndc.nasa.gov ([129.166.9.32]) by ndmsxgw03.ndc.nasa.gov with Microsoft SMTPSVC(6.0.3790.3959); Fri, 6 Feb 2009 16:52:37 -0600 Received: from 143.232.160.68 ([143.232.160.68]) by NDMSEVS34B.ndc.nasa.gov ([129.166.9.8]) via Exchange Front-End Server mail02.ndc.nasa.gov ([129.166.9.44]) with Microsoft Exchange Server HTTP-DAV ; Fri, 6 Feb 2009 22:52:14 +0000 User-Agent: Microsoft-Entourage/11.3.6.070618 X-Original-Date: Fri, 06 Feb 2009 14:52:12 -0800 Subject: RE: Legacy Gear Strut Leak? From: "Reinath, Michael" X-Original-To: Lancair Mailing List X-Original-Message-ID: Thread-Topic: Legacy Gear Strut Leak? Thread-Index: AcmIrYw4yrF5sPSgEd27XgADkxkwcA== Mime-version: 1.0 Content-type: text/plain; charset="US-ASCII" Content-transfer-encoding: 7bit X-OriginalArrivalTime: 06 Feb 2009 22:52:37.0847 (UTC) FILETIME=[9BA06670:01C988AD] Erik, Your strut o-rings are leaking. Mine were leaking the same way on my 360 nose-gear strut. The Legacy struts are probably very similar in design to the 360 strut. It has 4 o-rings on the strut body assembly that slides into the housing like a piston into a cylinder. The cap screws are there only to keep the strut body assembly from sliding out of the housing or rotating inside the housing. Tightening these will not do anything about the leak. The 360 strut o-rings are a standard size -- I don't remember the size, (I can look it up if someone wants to know) -- but I was able to get about 25 of them (Buna-N) from McMaster Carr (www.mcmaster.com) for a few dollars. Installing them is not difficult, but you do have to make a tool to get the assembly, with the o-rings, to slide past the cap-screw holes without nicking the o-rings. You also have to service the strut with new oil, make sure all the air/N2 is out of the shimmy damper, and refill with N2. I would get some leaking at the screws and the bottom of the strut housing after each flight. After I replaced the o-rings, no more leaking. Mike Reinath LNC2 360 N3602M @ about 900 hrs San Jose, CA (RHV)