Return-Path: Received: from mxsf04.cluster1.charter.net ([209.225.28.204] verified) by logan.com (CommuniGate Pro SMTP 4.2.8) with ESMTP id 600441 for flyrotary@lancaironline.net; Sun, 09 Jan 2005 12:03:59 -0500 Received-SPF: none receiver=logan.com; client-ip=209.225.28.204; envelope-from=cardmarc@charter.net Received: from mxip11.cluster1.charter.net (mxip11a.cluster1.charter.net [209.225.28.141]) by mxsf04.cluster1.charter.net (8.12.11/8.12.11) with ESMTP id j09H3hPq018693 for ; Sun, 9 Jan 2005 12:03:43 -0500 Received: from unknown (HELO homeoffice) (68.191.220.133) by mxip11.cluster1.charter.net with ESMTP; 09 Jan 2005 12:03:43 -0500 X-Ironport-AV: i="3.88,111,1102309200"; d="scan'217,208"; a="714910837:sNHT24940880" From: "Marc Wiese" To: "'Rotary motors in aircraft'" Subject: RE: [FlyRotary] Re: Oil Pump Drive Key was Re: [FlyRotary] Re: Some things to check Date: Sun, 9 Jan 2005 11:03:21 -0600 Message-ID: <000401c4f66d$27dadee0$6502a8c0@homeoffice> MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0005_01C4F63A.DD406EE0" X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook, Build 10.0.2627 Importance: Normal X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.2180 In-Reply-To: This is a multi-part message in MIME format. ------=_NextPart_000_0005_01C4F63A.DD406EE0 Content-Type: text/plain; charset="US-ASCII" Content-Transfer-Encoding: 7bit I like this solution! I too have had trouble with that finicky keyway on the oil pump... Marc Wiese -----Original Message----- From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On Behalf Of Ken Welter Sent: Friday, January 07, 2005 4:36 PM To: Rotary motors in aircraft Subject: [FlyRotary] Re: Oil Pump Drive Key was Re: [FlyRotary] Re: Some things to check Yes I put a center punch mark on each side of the key to make it a jam fit and I put locktite on it and hammer it in and then let it sit for a while before installing it, works great as I have disassembled the engine and reassembled it several times and the key never budges. Ken Welter Wendell, Ed Anderson had a problem where the oil pump Wooodruff key wasn't in the keyway. The drive was just taken by the friction of the tensioned nut. Worked for a while. Sooner or later, the sprocket will slip on the shoulder of the pump shaft. The symptom is intermittent loss of oil pressure, which gets worse as the sprocket wears on the shaft shoulder. So, as I said in the post below, always make sure that the key is actually in the keyway before fitting to nut & lockwasher. The key itself is very tiny, and it requires a bit of juggling to get it in the keyway in the sprocket. I normally gently stake the keyway in the shaft so that the key can't slip out. Hope this makes sense! Leon ------=_NextPart_000_0005_01C4F63A.DD406EE0 Content-Type: text/html; charset="US-ASCII" Content-Transfer-Encoding: quoted-printable Re: [FlyRotary] Oil Pump Drive Key was Re: [FlyRotary] = Re:

I like this solution! I too have = had trouble with that finicky keyway on the oil = pump…..

Marc = Wiese

 

-----Original = Message-----
From: Rotary motors in = aircraft [mailto:flyrotary@lancaironline.net] On Behalf Of Ken Welter
Sent: Friday, January 07, = 2005 4:36 PM
To: Rotary motors in = aircraft
Subject: [FlyRotary] Re: = Oil Pump Drive Key was Re: [FlyRotary] Re: Some things to check

 

   Yes I put a center punch mark on each side of the key to make it a jam = fit and I put locktite on it and hammer it in and then let it sit for a while = before installing it, works great as I have disassembled the engine and = reassembled it several times and the key never = budges.

  Ken Welter

 

 

 

Wendell,<= /o:p>

 

Ed Anderson had a problem = where the oil pump Wooodruff key wasn't in the keyway.  The drive was just = taken by the friction of the tensioned nut. Worked for a while. Sooner = or later,  the sprocket will slip on the shoulder of the pump = shaft.  The symptom is intermittent loss of oil pressure,  which gets worse = as the sprocket wears on the shaft shoulder.

 

So,  as I said in the = post below,  always make sure that the key is actually in the keyway = before fitting to nut & lockwasher.  The key itself is very = tiny,  and it requires a bit of juggling to get it in the keyway in the = sprocket.  I normally gently stake the keyway in the shaft so that the key can't slip = out.

 

Hope this makes = sense!

 

Leon

 

 

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