X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml@lancaironline.net Date: Tue, 08 Feb 2011 14:58:32 -0500 Message-ID: X-Original-Return-Path: Received: from nm5-vm0.bullet.mail.sp2.yahoo.com ([98.139.91.204] verified) by logan.com (CommuniGate Pro SMTP 5.4c2a) with SMTP id 4841794 for lml@lancaironline.net; Mon, 07 Feb 2011 22:44:12 -0500 Received-SPF: none receiver=logan.com; client-ip=98.139.91.204; envelope-from=n20087@yahoo.com Received: from [98.139.91.68] by nm5.bullet.mail.sp2.yahoo.com with NNFMP; 08 Feb 2011 03:43:37 -0000 Received: from [98.139.91.11] by tm8.bullet.mail.sp2.yahoo.com with NNFMP; 08 Feb 2011 03:43:37 -0000 Received: from [127.0.0.1] by omp1011.mail.sp2.yahoo.com with NNFMP; 08 Feb 2011 03:43:37 -0000 X-Yahoo-Newman-Property: ymail-3 X-Yahoo-Newman-Id: 243923.87483.bm@omp1011.mail.sp2.yahoo.com Received: (qmail 33539 invoked by uid 60001); 8 Feb 2011 03:43:36 -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=vZ/whhJTDOAOTsNYmTEFjNl/DjaurnnxCK+I8gcUmDAoz+6LvxbM+VsLD1llh13IArBOutJS+lwaX1IE+6T9UbB/QoQX+a1SzyLWF5bC5MLxnarwluCzyEh8Zx0sqwAGDGz1dmuoQLVmavOW+Umm0RIKqPaMcIn4BoENL3fmpqg=; X-Original-Message-ID: <752963.32260.qm@web112712.mail.gq1.yahoo.com> X-YMail-OSG: Xtks6YAVM1lJUPeSV8Gex8tJA4otAaxJM5hxO_cAl0dxl97 R28p0j.pg7sjaU4ChcD1qkpAYKse3hCV8k3T5jLCdy7vjwlwpdovkTPbw89w wlEa_xbzjdG2gS_R5MDdI3VADijY.JS.nW0rxUlBHvWkuWMtVwHkMuNOawRb 1DEs5_2Qt_JJTSr_4UrmUseGWUj3Wv08eSXOySNDzOlm38e_sOdm8kpgw.Kb OTLVk8r_BFs1DJI0.j9Nj12PB_vJ10kutE6fwSqtu3CPPCXIEull.F7.kzeL zT1BuBbFaVl5GacDcJlz6B2OTwqKjXBgb4lvCc3Is.55iHFiesIkb7x6Tirc LjzjMBLglkC1Gvzthz5WSLeX8vriRkWxFoAgrAQQMzJ6ZtfQJSY8- Received: from [98.185.51.168] by web112712.mail.gq1.yahoo.com via HTTP; Mon, 07 Feb 2011 19:43:36 PST X-Mailer: YahooMailRC/555 YahooMailWebService/0.8.108.291010 References: X-Original-Date: Mon, 7 Feb 2011 19:43:36 -0800 (PST) From: TOM GARDINER Subject: Re: [LML] Re: LNC2 Hydraulic Landing Gear Pressure Switch Wear Issues X-Original-To: Lancair Mailing List In-Reply-To: MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="0-897363713-1297136616=:32260" --0-897363713-1297136616=:32260 Content-Type: text/plain; charset=iso-8859-1 Content-Transfer-Encoding: quoted-printable Randy,=0A=0AMy pump just started doing the same thing.=A0 I capped off the = pump to check if =0Athe issue was inside the pump or switch (teh switch is = new and verified with =0Agauges).=A0 I found the O rings inside the adapter= were hard and seemed worn.=A0 I =0Asuspect fluid =A0is leaking across thes= e O rings.=A0 I decided to replace the entire =0Aadapter section and upgrad= e the pump section and sump at the same time =0A=0A=0AThe reference below i= s from somebody else's post that I dug up on the internet =0Aa=A0little whi= le ago=0A=0AThanks=0A=0ATom=0A=0A=0AUPDATE 3-12-2008: I've now performed my= 4th "Frankenpump" surgery on a Velocity =0Athis week. It seems this proble= m is becoming more common as these parts wear. =0AI've also learned how to = save a significant amount of money and still get the =0Ajob completed. The = trick is to order JUST the center "adapter" section of the =0Apump. It's th= e casting and components that is in-between the electric motor and =0Athe s= ump, where the pressure lines attach. You can get them from just about any = =0AParker dealer, but these guys usually have them in stock - Western Fluid= Power, =0A2759 South 300 West, Suite H, Salt Lake City, Utah 84115. Talk t= o Boyd =0AOttenstein at 801-486-6500. You will need to order Part number 64= 2283, listed as =0A"Adapter", and it cost about $75. The VERY important par= t is that it have the =0A"LB Circuit"! This is the type of internal shuttle= that allows return fluid to =0Abe routed back to the sump - without it, yo= ur system will not work. It's also =0Aworth spending $20 more bucks and get= ting a new "Sump Kit" at the same time. =0AThat kit comes with new sump O-r= ings, pickup filters, sump return tube, new =0Aanti-seep filler cap, and th= e sump now mounts with screws from the top for a =0Amore positive (no leak)= attachment. Once you have all the stuff, just take your =0Apump apart and = transfer the motor, pressure valves, impellor pump (needs a Torx =0Asocket)= , and new sump over to the new center section. That's it...put her back =0A= in, bleed the system, and all things should be right with the world again. = Good =0Aluck!=0A=0A=0A=0A=A0=0A=0A=0A=0A________________________________=0A= From: randy snarr =0ATo: lml@lancaironline.net=0ASen= t: Mon, February 7, 2011 9:18:55 PM=0ASubject: [LML] Re: LNC2 Hydraulic Lan= ding Gear Pressure Switch Wear Issues=0A=0A=0AIn the last month, on roll ou= t on landing, my gear pump will occasionally cycle =0Aon and off very quick= ly for several seconds.=0AThis is after about 400 hours TT.=0ADoes this sou= nd like the gear down pressure switch is arching internally?=0A=0ARandy Sna= rr=0A=0A"Flight by machines heavier than air is unpractical and insignifica= nt, if not =0Autterly impossible"=0A-Simon Newcomb, 1902=0A=0A--- On Mon, 2= /7/11, Jeffrey W. Skiba wrote:=0A=0A=0A>From: Jeffrey W.= Skiba =0A>Subject: [LML] Re: LNC2 Hydraulic Landing Gear= Pressure Switch Wear Issues=0A>To: lml@lancaironline.net=0A>Date: Monday, = February 7, 2011, 12:52 PM=0A>=0A>=0A>Bruce,=0A>=A0=0A>Does this replace th= e existing switch? Screws in and you set your desired =0A>pressure on the b= ody of the sensor ?=0A>Or does it need another component to work like a con= verter or relay ?=0A>=A0=0A>If it just screws in can it also out put the ac= tual pressure to say a Grand =0A>Rapids=A0 EFIS ??? for example ?=0A>=A0=0A= >Sent:Monday, February 07, 2011 11:32 AM=0A>Subject: [LML] Re: LNC2 Hydraul= ic Landing Gear Pressure Switch Wear Issues=0A>=A0=0A>Several of our guys (= including me) have junked our mechanical pressure switches =0A>and moved to= solid state adjustable switches.=0A>=A0=0A>http://www.automationdirect.com= /adc/Search/Search?searchquery=3DPSD25-OP-5800H&cmd=3DSearch&fctype=3Dadc.f= alcon.search.SearchFormCtrl&TxnNumber=3D-1=0A>=0A__________________________= ______=0A=0A>No virus found in this message.=0A>Checked by AVG - www.avg.co= m=0A>Version: 10.0.1204 / Virus Database: 1435/3428 - Release Date: 02/07/1= 1 =0A=0A=0A=0A --0-897363713-1297136616=:32260 Content-Type: text/html; charset=iso-8859-1 Content-Transfer-Encoding: quoted-printable
Randy,
=0A
 
=0A
My pump just s= tarted doing the same thing.  I capped off the pump to check if the is= sue was inside the pump or switch (teh switch is new and verified with gaug= es).  I found the O rings inside the adapter were hard and seemed worn= .  I suspect fluid  is leaking across these O rings.  I deci= ded to replace the entire adapter section and upgrade the pump section and = sump at the same time
=0A
 
=0A
The reference below= is from somebody else's post that I dug up on the internet a little w= hile ago
=0A
 
=0A
Thanks
=0A
 
= =0A
Tom
=0A
 
=0A
 
=0A
=0A

UPD= ATE 3-12-2008: I've now performed my 4th "Frankenpump" surgery on a Velocit= y this week. It seems this problem is becoming more common as these parts w= ear. I've also learned how to save a significant amount of money and still = get the job completed. The trick is to order JUST the center "adapter" sect= ion of the pump. It's the casting and components that is in-between the ele= ctric motor and the sump, where the pressure lines attach. You can get them= from just about any Parker dealer, but these guys usually have them in sto= ck - Western Fluid Power, 2759 South 300 West, Suite H, Salt Lake City, Uta= h 84115. Talk to Boyd Ottenstein at 801-486-6500. You will need to order Pa= rt number 642283, listed as "Adapter", and it cost about $75. The VERY impo= rtant part is that it have the "LB Circuit"! This is the type of internal s= huttle that allows return fluid to be routed back to the sump - without it,= your system will not work. It's also worth spending $20 more bucks and getting a new "Sump Kit" at the same time. That kit comes with n= ew sump O-rings, pickup filters, sump return tube, new anti-seep filler cap= , and the sump now mounts with screws from the top for a more positive (no = leak) attachment. Once you have all the stuff, just take your pump apart an= d transfer the motor, pressure valves, impellor pump (needs a Torx socket),= and new sump over to the new center section. That's it...put her back in, = bleed the system, and all things should be right with the world again. Good= luck!

=0A
 
=0A
 
=0A

 =
=0A

=0A
=0A
=0AFrom: randy snarr = <randylsnarr@yahoo.com>
To: lml@lancaironline.net
Sen= t: Mon, February 7, 2011 9:18:55 PM
Subject: [LML] Re: LNC2 Hydraulic Landing Gear Press= ure Switch Wear Issues

=0A=0A=0A=0A
In the last month, on = roll out on landing, my gear pump will occasionally cycle on and off very q= uickly for several seconds.
This is after about 400 hours TT.
Does th= is sound like the gear down pressure switch is arching internally?

R= andy Snarr

"Flight by machines he= avier than air is unpractical and insignificant, if not utterly impossible"=
-Simon Newcomb, 1902

--- On Mon, 2/7/11, Jeffrey W. Sk= iba <jskiba@icosa.net> wrote:
=0A
=
From: Jeffrey W. Skiba <jskiba@icosa.net>
Subject: [LML] Re: L= NC2 Hydraulic Landing Gear Pressure Switch Wear Issues
To: lml@lancairon= line.net
Date: Monday, February 7, 2011, 12:52 PM

=0A
=0A=0A=0A=
=0A

<= SPAN style=3D"COLOR: rgb(31,73,125)">Bruce,

=0A

 

=0ADoes t= his replace the existing switch? Screws in and you set your desired pressur= e on the body of the sensor ?

=0A

Or does it need another component to= work like a converter or relay ?

=0A

 

=0A

If it just screw= s in can it also out put the actual pressure to say a Grand Rapids  EF= IS ??? for example ?

=0A

 

=0A
=0A
=0A

Sent: Monday, February 07, 2011 11:32 AM
Sub= ject: [LML] Re: LNC2 Hydraulic Landing Gear Pressure Switch Wear Issues=

=0A

 

=0A

= Several of our guys (including me) have junked our mechanical pressure swit= ches and moved to solid state adjustable switches.

=0A

 

=0A

http://www.automationdirect.com/adc/Search/Search?searchquer= y=3DPSD25-OP-5800H&cmd=3DSearch&fctype=3Dadc.falcon.search.SearchFo= rmCtrl&TxnNumber=3D-1

=0A
=0A=0A

No virus found in this message.Checked by AVG - www.avg.com
Version: 10.0.1204 / Virus Database: 1435/3428 - R= elease Date: 02/07/11


<= /DIV>

=0A=0A --0-897363713-1297136616=:32260--