Return-Path: Received: from spdmgaae.compuserve.com ([149.174.206.138]) by ns1.olsusa.com (Post.Office MTA v3.5.3 release 223 ID# 0-70783U4500L450S0V35) with ESMTP id com for ; Sat, 10 Mar 2001 22:43:20 -0500 Received: (from mailgate@localhost) by spdmgaae.compuserve.com (8.9.3/8.9.3/SUN-1.9) id WAA18723 for lancair.list@olsusa.com; Sat, 10 Mar 2001 22:52:21 -0500 (EST) Date: Sat, 10 Mar 2001 22:51:31 -0500 From: Donald Gordon Subject: LNC2 Main Gear Sequence Valve Leakge Sender: Donald Gordon To: Lancair Mail List Message-ID: <200103102251_MC2-C869-57F0@compuserve.com> X-Mailing-List: lancair.list@olsusa.com Reply-To: lancair.list@olsusa.com Mime-Version: 1.0 <<<<<<<<<<<<<<<<--->>>>>>>>>>>>>>>> << Lancair Builders' Mail List >> <<<<<<<<<<<<<<<<--->>>>>>>>>>>>>>>> >> I've been cycling the gear in preparation for first flight and my inboard gear doors begin to close as soon as I select the gear up position. They stop moving after about 30 degrees of rotation. Naturally, this blocks the main gear from entering the wheel wells. I've double check the hydraulic schematics and everything seems in order. I'm guessing that the problem is leakage in the sequence values. As soon as the gear up position is selected, the high pressure side is leaking through the sequence value and pressuring the low pressure side against the inboard gear cylinder, resulting in the small movement. The movement stops when the low pressure side equalizes with the leak throught the sequence valve. Has anyone experienced these gear symptoms? Is so, is it likely to be the sequence valve? Are the sequence valves repairable or must they be replaced? Don Gordon Orlando, FL LNC2 - N320DS >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> LML website: http://www.olsusa.com/Users/Mkaye/maillist.html LML Builders' Bookstore: http://www.buildersbooks.com/lancair Please send your photos and drawings to marvkaye@olsusa.com. >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>