X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml@lancaironline.net Date: Sat, 05 Jul 2008 18:19:22 -0400 Message-ID: X-Original-Return-Path: Received: from mta11.charter.net ([216.33.127.80] verified) by logan.com (CommuniGate Pro SMTP 5.2.5) with ESMTP id 3012572 for lml@lancaironline.net; Sat, 05 Jul 2008 10:03:54 -0400 Received-SPF: pass receiver=logan.com; client-ip=216.33.127.80; envelope-from=LHenney@charter.net Received: from aarprv04.charter.net ([10.20.200.74]) by mta11.charter.net (InterMail vM.7.08.03.00 201-2186-126-20070710) with ESMTP id <20080705140306.OFB2622.mta11.charter.net@aarprv04.charter.net> for ; Sat, 5 Jul 2008 10:03:06 -0400 Received: from CYBERMAX ([97.93.200.118]) by aarprv04.charter.net with ESMTP id <20080705140305.QSDT3533.aarprv04.charter.net@CYBERMAX> for ; Sat, 5 Jul 2008 10:03:05 -0400 From: "Larry Henney" X-Original-To: "Lancair List" Subject: FW: [LML] Re: Question about Hydraulic Pump X-Original-Date: Sat, 5 Jul 2008 09:03:03 -0500 X-Original-Message-ID: <000c01c8dea7$d7e82880$640fa8c0@CYBERMAX> MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_000D_01C8DE7D.EF146A70" X-Mailer: Microsoft Office Outlook 11 Thread-Index: AcjdYqiRLwmb/v3bTwWS9OT43kDtqwBQ8bGA X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.3198 X-Chzlrs: 0 This is a multi-part message in MIME format. ------=_NextPart_000_000D_01C8DE7D.EF146A70 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Jeff, No. The design for the system is High Pressure port (with High press sw) on the left. Reversing the wiring in addition to the lines MIGHT allow function but the bleed off circuit and design pump rotation (for high pres) would be wrong. Oildyne could tell you with certainty. However, it only takes about 15 minutes to pull and reverse a spool valve. BTW, if you have an older model pump, you do NOT have the spool valve as pictured in Gerards post. In my discussions with oildyne, I believe I understand correctly that the early model pump does NOT have the bleed off circuit (like the guts pictured). Therefore, I'm not sure of your specific problem/ solution. I guess what I'm saying is that Oildyne/ Lancair never really explained why the pumps changed. I assume it was for the bleed off circuit. Additionally, I've got one in my hangar that chirps (a friends) and I'm not sure that our spool valve test holds any relevance to his pump. Chris Z? Any thoughts on the early models? Post repair inputs are perpetually appreciated. Larry Henney L360 800 hrs _____ From: Jeffrey Skiba [mailto:jskiba@icosa.net] Sent: Wednesday, July 02, 2008 10:05 PM To: lml@lancaironline.net Subject: Re: [LML] Re: Question about Hydraulic Pump For the reversed spool valve problem, could one not also just flip the lines on the ports ? aka cross them ... meaning if high was on the left move it to the right? thus the spool valve would then have high pressure on the correct side ? or does this pump have other items that cuaseit to have to flip the spool valve internally. I guess the question is why does the HIGH side of the pump need to be on the left while facing the pump ? is it only cause the spool valve ? or is there something else in the pump that needs to have the high side on the left ? Wondering .... > > > here is the guts of the pump > -- > For archives and unsub > http://mail.lancaironline.net:81/lists/lml/List.html > ------=_NextPart_000_000D_01C8DE7D.EF146A70 Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable

Jeff,

No.

The design for the system is High Pressure = port (with=20 High press sw) on the left. Reversing the wiring in addition = to the=20 lines MIGHT allow function but the bleed off circuit and design = pump=20 rotation (for high pres) would be wrong. Oildyne could tell you = with=20 certainty.

However, it only takes about 15 minutes to = pull and=20 reverse a spool valve.

BTW, if you have an older model pump, you = do NOT=20 have the spool valve as pictured in Gerards post. In my = discussions with=20 oildyne, I believe I understand correctly that the early model pump does = NOT=20 have the bleed off circuit (like the guts pictured). Therefore, = I'm not=20 sure of your specific problem/ solution. I guess what I'm saying = is that=20 Oildyne/ Lancair never really explained why the pumps changed. I = assume it=20 was for the bleed off circuit. Additionally, I've got one in my = hangar=20 that chirps (a friends) and I'm not sure that our spool valve test holds = any=20 relevance to his pump. Chris Z? Any thoughts on the early=20 models?

Post repair inputs are perpetually=20 appreciated.

Larry Henney

L360 800 hrs

From: Jeffrey Skiba = [mailto:jskiba@icosa.net]=20
Sent: Wednesday, July 02, 2008 10:05 PM
To:=20 lml@lancaironline.net
Subject: Re: [LML] Re: Question about = Hydraulic=20 Pump

For the reversed spool valve problem, could one not also just = flip=20 the lines on the ports ? aka cross them ... meaning if high was on the = left move=20 it to the right? thus the spool valve would then have high pressure on = the=20 correct side ?

or does this pump have other items that cuaseit to = have to=20 flip the spool valve internally.

I guess the question is why does = the=20 HIGH side of the pump need to be on the left while facing the pump ? is = it only=20 cause the spool valve ? or is there something else in the pump that = needs to=20 have the high side on the left ?

Wondering ....

> =
>=20
> here is the guts of the pump
> --
> For archives = and=20 unsub
> http://mail.lancaironline.net:81/lists/lml/List.html =
>=20
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