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dwntzl(at)yahoo.com
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 Posted: Mon Mar 16, 2015 8:45 am Post subject: RV-List Digest: 0 Msgs - 03/15/15 |
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Lycoming Cylinder problem
Hello fellow RV'rs, Looking for advice, here's my situation \ problem. (I have an RV6, w an 0-320 A2B which was installed rebuilt, modified to 160 HP, during construction about 700 hrs ago). It has been running great, but I have been seeing a couple of small oil leaks, (which have gotten to be quite annoying.) While doing an oil change recently, I discovered one of the top cylinder bolts (small one - not the larger thru bolts) had sheared off. I had not done anything to it whatsoever, nor was there any evidence of looseness or an oil leak in that area, the broken part was just sitting there, I then jiggled the other upper bolts by hand and . . . 2 of them were just finger tight!. Someone (a local A&P) suggested that a good welder could weld a nut to the broken stud and remove it that way - but that sounds way to "scary" to me.
Any advice appreciated. Also . . . is the plane grounded until the repair??
Thanks in advance
David Wentzell - N233DW
On Monday, March 16, 2015 3:24 AM, RV-List Digest Server <rv-list(at)matronics.com> wrote:
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=========================
Online Versions of Today's List Digest Archive
=========================
Today's complete RV-List Digest can also be found in either of the
two Web Links listed below. The .html file includes the Digest formatted
in HTML for viewing with a web browser and features Hyperlinked Indexes
and Message Navigation. The .txt file includes the plain ASCII version
of the RV-List Digest and can be viewed with a generic text editor
such as Notepad or with a web browser.
HTML Version:
http://www.matronics.com/digest/digestview.php?Style=82701&View=html&Chapter=2015-03-15&Archive=RV
Text Version:
http://www.matronics.com/digest/digestview.php?Style=82701&View=txt&Chapter=2015-03-15&Archive=RV
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EMail Version of Today's List Digest Archive
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RV-List Digest Archive
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Total Messages Posted Sun 03/15/15: 0
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Today's Message Index:
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http -Matt Dralle, List Admin.=======
[quote][b]
| | - The Matronics RV-List Email Forum - | | | Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:
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carl.froehlich(at)verizon
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| Posted: Mon Mar 16, 2015 4:06 pm Post subject: RV-List Digest: 0 Msgs - 03/15/15 |
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I’ll defer to the guru mechanics out there, but if it was my plane the engine would get pulled, disassembled and repaired as needed. I would assume other bolts that had taken up the load of those bolts that you found loose had deformed – and perhaps this is what caused your sheared bolt.
Note – Mike Busch has voiced his opinion (which I agree with) that engine cylinders cannot be properly removed/replace without removing the engine from the aircraft as this impedes achieving correct cylinder bolt torque.
Carl
From: owner-rv-list-server(at)matronics.com [mailto:owner-rv-list-server(at)matronics.com] On Behalf Of d wntzl
Sent: Monday, March 16, 2015 12:45 PM
To: rv-list(at)matronics.com
Subject: Re: RV-List Digest: 0 Msgs - 03/15/15
Lycoming Cylinder problem
Hello fellow RV'rs, Looking for advice, here's my situation \ problem. (I have an RV6, w an 0-320 A2B which was installed rebuilt, modified to 160 HP, during construction about 700 hrs ago). It has been running great, but I have been seeing a couple of small oil leaks, (which have gotten to be quite annoying.) While doing an oil change recently, I discovered one of the top cylinder bolts (small one - not the larger thru bolts) had sheared off. I had not done anything to it whatsoever, nor was there any evidence of looseness or an oil leak in that area, the broken part was just sitting there, I then jiggled the other upper bolts by hand and . . . 2 of them were just finger tight!. Someone (a local A&P) suggested that a good welder could weld a nut to the broken stud and remove it that way - but that sounds way to "scary" to me.
Any advice appreciated. Also . . . is the plane grounded until the repair??
Thanks in advance
David Wentzell - N233DW
On Monday, March 16, 2015 3:24 AM, RV-List Digest Server <rv-list(at)matronics.com (rv-list(at)matronics.com)> wrote:
*
=========================
Online Versions of Today's List Digest Archive
=========================
Today's complete RV-List Digest can also be found in either of the
two Web Links listed below. The .html file includes the Digest formatted
in HTML for viewing with a web browser and features Hyperlinked Indexes
and Message Navigation. The .txt file includes the plain ASCII version
of the RV-List Digest and can be viewed with a generic text editor
such as Notepad or with a web browser.
HTML Version:
http://www.matronics.com/digest/digestview.php?Style=82701&View=html&Chapter=2015-03-15&Archive=RV
Text Version:
http://www.matronics.com/digest/digestview.php?Style=82701&View=txt&Chapter=2015-03-15&Archive=RV
=======================
EMail Version of Today's List Digest Archive
=======================
----------------------------------------------------------
RV-List Digest Archive
---
Total Messages Posted Sun 03/15/15: 0
----------------------------------------------------------
Today's Message Index:
----------------------
http -Matt Dralle, List Admin.=======
| Quote: | | http://www.matronics.com/Navigator?RV-List |
01234567
[quote][b]
| | - The Matronics RV-List Email Forum - | | | Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:
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vanremog(at)aol.com
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| Posted: Mon Mar 16, 2015 4:14 pm Post subject: RV-List Digest: 0 Msgs - 03/15/15 |
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Really? Mike is usually spot on but I find this to be an unfounded assertion. On what evidence does he base this opinion?
If this is true, thousands of aircraft over the last 50 years have been flying in an unairworthy condition.
-GV
| Quote: | | Note – Mike Busch has voiced his opinion (which I agree with) that engine cylinders cannot be properly removed/replace without removing the engine from the aircraft as this impedes achieving correct cylinder bolt torque. |
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| | - The Matronics RV-List Email Forum - | | | Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:
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n1345p
Joined: 30 Jan 2008
Posts: 9
Location: Chickasha, OK
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| Posted: Thu Mar 19, 2015 6:12 am Post subject: Re: RV-List Digest: 0 Msgs - 03/15/15 |
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I had a broken stud on an older O320. We removed it by welding a washer to what was left of the stud, then welding a nut to the washer.
I peened the washer like a Belleville or a funnel to get it on to the stud. It didn't require a good weld, as the broken stud was not in tension and the thermal cycle from welding it caused it to loosen in the aluminum alloy case.
Soon after the repair, we went ahead and overhauled the engine. Divco put in all new studs.
mitch
| | - The Matronics RV-List Email Forum - | | | Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:
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