X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml@lancaironline.net Date: Fri, 01 Apr 2011 10:34:39 -0400 Message-ID: X-Original-Return-Path: Received: from web36908.mail.mud.yahoo.com ([209.191.85.76] verified) by logan.com (CommuniGate Pro SMTP 5.4c2) with SMTP id 4929302 for lml@lancaironline.net; Fri, 01 Apr 2011 09:50:27 -0400 Received-SPF: none receiver=logan.com; client-ip=209.191.85.76; envelope-from=chris_zavatson@yahoo.com Received: (qmail 88696 invoked by uid 60001); 1 Apr 2011 13:49:52 -0000 DomainKey-Signature:a=rsa-sha1; q=dns; c=nofws; s=s1024; d=yahoo.com; h=Message-ID:X-YMail-OSG:Received:X-Mailer:References:Date:From:Subject:To:In-Reply-To:MIME-Version:Content-Type; b=NnTUDzkGF+hGfRKWm+pH9YdbA9CwHZ/DslM3oHK7CEHQ7DeslC8QC1S3Ly5XGKEoYSmgT9eqClyugbQEVW2GOjJQpcyKG9WX6HSESwrPvF5advTCw4C/zlEg18Ga4ey/bmPotq2VKhhxXlTCIlI7CQvI7RA7jAhMtqk0cWJHa2M=; X-Original-Message-ID: <70585.65328.qm@web36908.mail.mud.yahoo.com> X-YMail-OSG: RVW.QkkVM1mY2A8XVMDNqXv14dRH29rnYiAHfnO79jAGs4R SB8kmry1Pk564TU.jV_JhDdL4OT11L6DWcR0zgKuD1Q.duP5ilnwY6Pqad3g 76PJIyKgW0leX2zQxbwxpYmT6Gmmobz7IGUse.3mHFhgny9rk9vMUWBQw0lw 4qQE8JLUatW0C8wRM84CY.jtWUO0aWK_NXi5kvs.pL_z9V99I9lTmZfXnEWy OBcH_0184Y2AFS5v8m0GNyW2sj2WIZSc.23Kt1AOxog7HlKKFtJ_cmACQNls dyWIKVtFNHZmQp62TEfTtcpxoBpVVY7R.oA8a.7ukVzdOTziKo2bepnaKFO8 i1KfEQ8O__TezDRn7_DAUbp9vUgFZ9J1u5_F9uzC9Hesc.1H4KjICkecS0oq Mu7S6GHUHzkDPHQ-- Received: from [99.137.194.174] by web36908.mail.mud.yahoo.com via HTTP; Fri, 01 Apr 2011 06:49:52 PDT X-Mailer: YahooMailRC/559 YahooMailWebService/0.8.109.295617 References: X-Original-Date: Fri, 1 Apr 2011 06:49:52 -0700 (PDT) From: Chris Zavatson Subject: Re: [LML] Re: LNC2 Gear Hydraulics X-Original-To: Lancair Mailing List In-Reply-To: MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="0-784540037-1301665792=:65328" --0-784540037-1301665792=:65328 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable Keith,=0AYou should never have to resort to wrenches to get the wheels up = =E2=80=93and that is =0Anot just speaking from a safety perspective.=C2=A0 = =0A=0AThe following is an extract and renumbered set of slides from a LOBO = maintenance =0Aseminar on the 320/360 hydraulic system.=C2=A0 Slide 21 show= s one possible =0Aexplanation for your system=E2=80=99s failure to retract.= =0A=C2=A0=0Ahttp://www.n91cz.com/misc/LancairHydraulics-LML.pdf=0A=C2=A0=0A= Temperature changes will cause pressure to go up and down, but should only = =0Aaffect the currently operating side of the system.=C2=A0 The non-operati= ng side =0Ashould be zero and remain zero unless there is some other failur= e or =0Aconfiguration issue. =C2=A0=C2=A0If both operating and non-operatin= g sides are affected by =0Atemperature =E2=80=93 investigate.=C2=A0 =0A=0A= =C2=A0Note that earlier vintage pumps (~235 era) were internally different.= =0AYou may also find some of the following of interest:=0A=C2=A0=0Ahttp://= www.n91cz.com/Hydraulics/Lancair_Hydraulics.htm=0A=C2=A0=0AChris Zavatson= =0AN91CZ=0A360std=0Awww.N91CZ.net=0A=0A=0A=0A=0A___________________________= _____=0AFrom: Keith Smith =0ATo: lml@lancaironline.n= et=0ASent: Thu, March 31, 2011 12:24:59 PM=0ASubject: [LML] Re: LNC2 Gear H= ydraulics=0A=0AQuite possibly one of the best posts I've ever read.=C2=A0 T= hanks, Tom, for taking =0Athe time so share those experiences!=0A=0AI recen= tly experienced the inability to raise the gear. A quick call to Rick =0AAr= gente (Lancair owner/builder in NJ) provided the solution...bleed the line.= He =0Asaid it's a common issue when flying from cold locations (NJ) to war= mer =0Adestinations (Georgia).=0A=0AI also get hear the pump activate in fl= ight for a fraction of a second every =0A20-30 minutes or so, which I suspe= ct points to a leak of some sort.=0A=0AKeith Smith=0AN360JH=0A --0-784540037-1301665792=:65328 Content-Type: text/html; charset=utf-8 Content-Transfer-Encoding: quoted-printable
=0A

Keith,

=0A

You should never have t= o resort to wrenches to get the wheels up =E2=80=93and that is not just spe= aking from a safety perspective. 

=0A

The following is an extract and renumbered = set of slides from a LOBO maintenance seminar on the 320/360 hydraulic syst= em.  Slide 21 shows one possi= ble explanation for your system=E2=80=99s failure to retract.

=0A=

 

=0A

http://www.n91cz.com/misc/= LancairHydraulics-LML.pdf

=0A

 

= =0A

Temperature changes will cause pressure to go up and down, b= ut should only affect the currently operating side of the system.  The non-operating side should be zero= and remain zero unless there is some other failure or configuration issue.=   If both operating and= non-operating sides are affected by temperature =E2=80=93 investigate. 

=0A

 Note that earlier vintag= e pumps (~235 era) were internally different.

=0A

Yo= u may also find some of the following of interest:

=0A

=  

=0A

http://www.n91cz.com/Hydraulics/Lan= cair_Hydraulics.htm

=0A

 

=0A<= P style=3D"MARGIN: 0in 0in 0pt" class=3DMsoNormal>Chris Zavatson

=0A

N91CZ

=0A

360std

=0A

www.N91CZ.net


=0A

=0A
=0A
=0AFrom: Keith Smith <keith.smith@gmail.com>
To: lml@lancaironline.net
Sent: Thu, March 31, 2011 12:24:59 = PM
Subject: [LML] Re: LN= C2 Gear Hydraulics

Quite possibly one of the best posts I've = ever read.  Thanks, Tom, for taking the time so share those experience= s!

I recently experienced the inability to raise the gear. A quick c= all to Rick Argente (Lancair owner/builder in NJ) provided the solution...b= leed the line. He said it's a common issue when flying from cold locations = (NJ) to warmer destinations (Georgia).

I also get hear the pump acti= vate in flight for a fraction of a second every 20-30 minutes or so, which = I suspect points to a leak of some sort.

Keith Smith
N360JH
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