Return-Path: Received: from email2k3.itlnet.net ([64.19.112.12] verified) by logan.com (CommuniGate Pro SMTP 4.2.8) with ESMTP id 606409 for flyrotary@lancaironline.net; Thu, 13 Jan 2005 16:42:12 -0500 Received-SPF: none receiver=logan.com; client-ip=64.19.112.12; envelope-from=jwvoto@itlnet.net Received: from rav.itlnet.net (unverified [192.168.10.149]) by itlnet.net (Rockliffe SMTPRA 6.1.16) with SMTP id for ; Thu, 13 Jan 2005 15:41:41 -0600 Received: from JWVOTO (unverified [64.19.115.171]) by itlnet.net (Rockliffe SMTPRA 6.1.16) with SMTP id for ; Thu, 13 Jan 2005 15:41:39 -0600 Message-ID: <000001c4f9b9$030769e0$ab731340@JWVOTO> From: "Wendell Voto" To: "Rotary motors in aircraft" References: Subject: Re: [FlyRotary] Re: Oil Pump Drive Key was Re: [FlyRotary] Re: Some things to check Date: Thu, 13 Jan 2005 15:41:09 -0600 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_01C5_01C4F986.4E2814C0" X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 5.50.4133.2400 X-MimeOLE: Produced By Microsoft MimeOLE V5.50.4133.2400 This is a multi-part message in MIME format. ------=_NextPart_000_01C5_01C4F986.4E2814C0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Re: [FlyRotary] Oil Pump Drive Key was Re: [FlyRotary] Re:Well, I bit = the bullet and removed the front cover; that ultra-gray sure does stick. = Removed the nut (after straightening the washer) so I could see the = keyway and the key was visible about 1/8 inch in the shaft. I presume = that this is correct and did not need to go the all the trouble?? = Actually I found the remains of a mud dobber nest so all was not lost if = the key is in the correct position. Wendell ----- Original Message -----=20 From: Marc Wiese=20 To: Rotary motors in aircraft=20 Sent: Sunday, January 09, 2005 11:03 AM Subject: [FlyRotary] Re: Oil Pump Drive Key was Re: [FlyRotary] Re: = Some things to check I like this solution! I too have had trouble with that finicky keyway = on the oil pump... Marc Wiese =20 -----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 =20 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 =20 =20 =20 Wendell, =20 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. =20 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. =20 Hope this makes sense! =20 Leon =20 =20 ------=_NextPart_000_01C5_01C4F986.4E2814C0 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Re: [FlyRotary] Oil = Pump Drive Key was Re: [FlyRotary] Re:
Well, I bit the bullet and removed the front = cover;=20 that ultra-gray sure does stick.
Removed the nut (after straightening the = washer) so I=20 could see the keyway and the key was visible about 1/8 inch in the=20 shaft.   I presume that this is correct and did not need to go = the all=20 the trouble??  Actually I found the remains of a mud dobber nest so = all was=20 not lost if the key is in the correct position.
Wendell
----- Original Message -----
From:=20 Marc=20 Wiese
Sent: Sunday, January 09, 2005 = 11:03=20 AM
Subject: [FlyRotary] Re: Oil = Pump Drive=20 Key was Re: [FlyRotary] Re: Some things to check

I like this = solution!=20 I too have had trouble with that finicky keyway on the oil=20 pump…..

Marc=20 Wiese

 

-----Original=20 Message-----
From: = Rotary=20 motors in aircraft [mailto:flyrotary@lancaironline.net] On Behalf Of Ken = Welter
Sent: Friday, January 07, 2005 = 4:36=20 PM
To: Rotary = motors in=20 aircraft
Subject: = [FlyRotary]=20 Re: Oil Pump Drive Key was Re: [FlyRotary] Re: Some things to=20 check

 

   Yes I put a center punch mark on each side of = the key to=20 make it a jam fit and I put locktite on it and hammer it in and then = let it=20 sit for a while before installing it, works great as I have = disassembled the=20 engine and reassembled it several times and the key never=20 budges.

  Ken=20 Welter

 

 

 

Wendell,

 

Ed Anderson had a = problem where=20 the oil pump Wooodruff key wasn't in the keyway.  The drive was = just=20 taken by the friction of the tensioned nut. Worked for a=20 while. Sooner or later,  the sprocket will slip on the = shoulder of=20 the pump shaft.  The symptom is intermittent loss of oil=20 pressure,  which gets worse as the sprocket wears on the shaft=20 shoulder.

 

So,  as I said in = the post=20 below,  always make sure that the key is actually in the keyway = before=20 fitting to nut & lockwasher.  The key itself is very = tiny, =20 and it requires a bit of juggling to get it in the keyway in the=20 sprocket.  I normally gently stake the keyway in the shaft so = that the=20 key can't slip out.

 

Hope this makes=20 sense!

 

Leon

 

 

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