X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml@lancaironline.net Date: Sun, 01 Mar 2009 17:29:17 -0500 Message-ID: X-Original-Return-Path: Received: from imo-m28.mx.aol.com ([64.12.137.9] verified) by logan.com (CommuniGate Pro SMTP 5.2.12) with ESMTP id 3522296 for lml@lancaironline.net; Sun, 01 Mar 2009 13:54:36 -0500 Received: from ASW20747@aol.com by imo-m28.mx.aol.com (mail_out_v39.1.) id j.c97.3a9420ff (37055) for ; Sun, 1 Mar 2009 13:54:29 -0500 (EST) Received: from smtprly-db02.mx.aol.com (smtprly-db02.mx.aol.com [205.188.249.153]) by cia-db04.mx.aol.com (v123.3) with ESMTP id MAILCIADB041-5bcb49aad9e11f8; Sun, 01 Mar 2009 13:54:29 -0500 Received: from webmail-md13 (webmail-md13.webmail.aol.com [64.12.170.131]) by smtprly-db02.mx.aol.com (v121_r5.5) with ESMTP id MAILSMTPRLYDB022-5bcb49aad9e11f8; Sun, 01 Mar 2009 13:54:25 -0500 X-Original-To: lml@lancaironline.net Subject: Legacy Gear Retraction Problem - UPDATE! X-Original-Date: Sun, 01 Mar 2009 13:54:25 -0500 X-AOL-IP: 69.109.158.90 X-MB-Message-Source: WebUI MIME-Version: 1.0 From: asw20747@aol.com X-MB-Message-Type: User Content-Type: multipart/alternative; boundary="--------MB_8CB68B6466AA7DB_830_4A27_webmail-md13.sysops.aol.com" X-Mailer: AOL Webmail 41421-STANDARD Received: from 69.109.158.90 by webmail-md13.sysops.aol.com (64.12.170.131) with HTTP (WebMailUI); Sun, 01 Mar 2009 13:54:25 -0500 X-Original-Message-Id: <8CB68B64668457F-830-2415@webmail-md13.sysops.aol.com> X-Spam-Flag:NO ----------MB_8CB68B6466AA7DB_830_4A27_webmail-md13.sysops.aol.com Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" Legacy Gear Retraction Problem - UPDATE! A few days ago I posted a problem we were having with a Legacy gear swing on= annual inspection. It was a chattering or shutter experienced as the right=20= main retracted and interfaced with the inner gear door sequencing valve. I would like to thank everyone that responded with helpful hints and suggest= ions via LML and off line. With the help of a friend=E2=80=99s Legacy that is in the final phase of con= struction, we were able to =E2=80=9Cborrow=E2=80=9D parts and expedite the t= rouble shooting. For those still interested, here is what we found and what we did to trouble= shoot this problem. * Disconnected inner and outer gear doors - NO HELP. * Rebuilt the right sequencing valve with new kit - NO HELP. * Replaced the right sequencing valve with new - NO HELP. * Adjusted the right sequencing valve from minimum to maximum - NO HELP. * Adjusted the Hyd Pressure from less than a 1,000psi to 1,425psi - NO HELP. * Overrode the high pressure shut off pressure switch momentarily - NO HELP. * Isolated other gear to prioritize pressure to right gear - NO HELP. * Found that by =E2=80=9Chelping=E2=80=9D the right gear go up by hand, ther= e was - NO CHATTERING. * Suspected weak main gear actuator, replaced with new - NO HELP. * Suspected possible problem with Hyd Power pack - replaced with new - NO HE= LP. * Isolated inner gear door actuator AFTER the sequencing valve - NO CHATTERI= NG. * Suspected problem with inner gear door=3D2 0actuator - replaced - NO HELP. At this point we were at a COMPLETE loss. Other than replace hydro lines, wh= at else could we do?=20 Then one of the (many) able bodied by-standers who had some extensive experi= ence with hydraulics, surmised that there is some sort of dynamic/harmonic g= oing on between the inner gear door actuator and the sequencing valve. He su= ggested putting a reducer in the up side of the inner gear door actuator. So= unded strange, but at this point what did we have to loose. We tried the ret= raction and it worked PERFECTLY time after time!! The only thing we haven=E2=80=99t done yet is connect the inner gear door, b= ut watching the actuator move it is moving smoothly and in sequence, so we a= re =E2=80=9Ccautiously optimistic=E2=80=9D that we have solved the problem. Does anyone have an idea of what is going on here? What could change after t= wo years to cause this problem? Is there anything wrong with a fix like this= if everything is working well? =C2=A0 Thanks again to everyone at LML for the help and advice. Erik Larson Legacy=20 N74FX ----------MB_8CB68B6466AA7DB_830_4A27_webmail-md13.sysops.aol.com Content-Transfer-Encoding: quoted-printable Content-Type: text/html; charset="utf-8"
Legacy Gear Retraction Problem - UPDATE!

A few days ago I posted a problem we were having with a Legacy gear swing on= annual inspection. It was a chattering or shutter experienced as the right=20= main retracted and interfaced with the inner gear door sequencing valve.

I would like to thank everyone that responded with helpful hints and suggest= ions via LML and off line.
With the help of a friend=E2=80=99s Legacy that is in the final phase o= f construction, we were able to =E2=80=9Cborrow=E2=80=9D parts and expedite=20= the trouble shooting.
For those still interested, here is what we found and what we did to tr= ouble shoot this problem.

* Disconnected inner and outer gear doors - NO HELP.
* Rebuilt the right sequencing valve with new kit - NO HELP.
* Replaced the right sequencing valve with new - NO HELP.
* Adjusted the right sequencing valve from minimum to maximum - NO HELP= .
* Adjusted the Hyd Pressure from less than a 1,000psi to 1,425psi - NO=20= HELP.
* Overrode the high pressure shut off pressure switch momentarily - NO=20= HELP.
* Isolated other gear to prioritize pressure to right gear - NO HELP.
* Found that by =E2=80=9Chelping=E2=80=9D the right gear go up by hand,= there was - NO CHATTERING.
* Suspected weak main gear actuator, replaced with new - NO HELP.
* Suspected possi ble problem with Hyd Power pack - replaced with new - NO HELP.
* Isolated inner gear door actuator AFTER the sequencing valve - NO CHA= TTERING.
* Suspected problem with inner gear door actuator - replaced - NO HELP.=

At this point we were at a COMPLETE loss. Other than replace hydro lines, wh= at else could we do?
Then one of the (many) able bodied by-standers who had some extensive e= xperience with hydraulics, surmised that there is some sort of dynamic/harmo= nic going on between the inner gear door actuator and the sequencing valve.=20= He suggested putting a reducer in the up side of the inner gear door actuato= r. Sounded strange, but at this point what did we have to loose. We tried th= e retraction and it worked PERFECTLY time after time!!

The only thing we haven=E2=80=99t done yet is connect the inner gear door, b= ut watching the actuator move it is moving smoothly and in sequence, so we a= re =E2=80=9Ccautiously optimistic=E2=80=9D that we have solved the problem.<= /div>

Does anyone have an idea of what is going on here? What could change after t= wo years to cause this problem? Is there anything wrong with a fix like this= if everything is working well?
 
Thanks again to everyone at LML for the help and advice.

Erik Larson
Legacy
N74FX

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