Return-Path: Sender: "Marvin Kaye" To: lml@lancaironline.net Date: Wed, 29 Sep 2004 22:23:35 -0400 Message-ID: X-Original-Return-Path: Received: from sccrmhc12.comcast.net ([204.127.202.56] verified) by logan.com (CommuniGate Pro SMTP 4.2.3) with ESMTP id 437548 for lml@lancaironline.net; Wed, 29 Sep 2004 21:59:22 -0400 Received-SPF: none receiver=logan.com; client-ip=204.127.202.56; envelope-from=edechazal@comcast.net Received: from cc1860069a (pcp09040864pcs.rocsth01.mi.comcast.net[69.244.182.42]) by comcast.net (sccrmhc12) with SMTP id <20040930015852012009ncj1e>; Thu, 30 Sep 2004 01:58:53 +0000 X-Original-Message-ID: <009d01c4a690$c031b100$6401a8c0@rocsth01.mi.comcast.net> From: X-Original-To: "Lancair Mailing List" References: Subject: Re: LNC2 Vacuum failure and Boost pump problem X-Original-Date: Wed, 29 Sep 2004 21:56:49 -0400 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_009A_01C4A66F.38AA92E0" X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2800.1106 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1106 This is a multi-part message in MIME format. ------=_NextPart_000_009A_01C4A66F.38AA92E0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Here's the upshot on these two problems: both builder (yours truly) = error. The Vacuum failure - As a couple of people suggested, we checked the = pump function directly, it was sucking and blowing. Hmmm. Squeal was = still there, no vacuum in the system according to the gage and the gyro, = although the gyro did move slightly. Looking at the regulator under = the header tank we say one port open, the other having the usual hose = attached. Hmmm. Then it hit me later. I bet that mysterious little = blue cap I found by the rudder pedals must have been capping that open = port on the regulator. I was working up there during the annual. That = certainly explains the symptoms and when plugged back in, everything = worked fine. Note to self: that cap and its brother on the vacuum = filter port #2 can pop off easily when the engine is not running. Find = a more positive attachment method. The Fuel pump problem - Yes, I put the new pump in backwards. When I = unpacked the new pump it looked just like mine and so I installed it = that way. I had not noticed the cast in words 'in' and 'out' above each = port until later when I looked at the old pump, which just reinforced my = belief that I put the new one in correctly. I used the bypass port as = reference and failed to notice that it was switchable to the opposite = side by moving the plug. I did notice that the decals seemed reversed = on the pump body, but thought nothing of it. I'll pay for my mistake = with having to remove the canopy and header tank again to get at the = pump. Lessons: Whenever you have a wrench or screwdriver in your hand, think = about what you're doing. Also, at the smallest puzzling thing (occurred = in both instances above) stop and think it through. Finally, in case = that's not enough, after changes, such as an annual, test on the ground = and in the air in safe conditions such as good day VFR. =20 Regards, Ed de Chazal ------=_NextPart_000_009A_01C4A66F.38AA92E0 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable

Here's the upshot on = these two=20 problems: both builder (yours truly) error.

The Vacuum failure - As = a couple of=20 people suggested, we checked the pump function directly, it was sucking = and=20 blowing. Hmmm. Squeal was still there, no vacuum in the = system=20 according to the gage and the gyro, although the gyro did move=20 slightly. Looking at the regulator under the header tank we = say one=20 port open, the other having the usual hose attached. = Hmmm. =20 Then it hit me later. I bet that mysterious little blue cap I = found by the=20 rudder pedals must have been capping that open port on the = regulator. I=20 was working up there during the annual. That certainly explains = the=20 symptoms and when plugged back in, everything worked fine. Note to = self: that cap and its brother on the vacuum filter port #2 can = pop off=20 easily when the engine is not running. Find a more positive = attachment=20 method.

The Fuel pump problem - = Yes, I put=20 the new pump in backwards. When I unpacked the new pump it looked = just=20 like mine and so I installed it that way. I had not noticed the = cast in=20 words 'in' and 'out' above each port until later when I looked at the = old pump,=20 which just reinforced my belief that I put the new one in = correctly. =20 I used the bypass port as reference and failed to notice that it = was=20 switchable to the opposite side by moving the plug. I did notice = that the=20 decals seemed reversed on the pump body, but thought nothing of = it. I'll=20 pay for my mistake with having to remove the canopy and header tank = again to get=20 at the pump.

Lessons: Whenever = you have a=20 wrench or screwdriver in your hand, think about what you're doing. = Also,=20 at the smallest puzzling thing (occurred in both instances above) stop = and think=20 it through. Finally, in case that's not enough, after changes, = such as an=20 annual, test on the ground and in the air in safe conditions such as = good day=20 VFR.

Regards,

Ed de=20 Chazal

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