Today's Message Index:
----------------------
1. 09:45 AM - Re: RV-List Digest: 0 Msgs - 03/15/15 (d wntzl)
2. 05:06 PM - Re: Re: RV-List Digest: 0 Msgs - 03/15/15 (Carl Froehlich)
3. 05:14 PM - Re: Re: RV-List Digest: 0 Msgs - 03/15/15 (vanremog@aol.com)
4. 05:54 PM - Re: Cylinder stud repair (Kelly McMullen)
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Subject: | Re: RV-List Digest: 0 Msgs - 03/15/15 |
Lycoming Cylinder problem
Hello fellow RV'rs, =C2-Looking for advice, here's my situation \ problem
. (I have an RV6, w an 0-320 A2B which was installed rebuilt, modified to 1
60 HP, during construction about 700 hrs ago). It has been running great, b
ut I have been seeing =C2-a couple of small oil leaks, (which have gotten
to be quite annoying.) While doing an oil change recently, I discovered on
e of the top cylinder bolts (small one - not the larger thru bolts) had she
ared off. I had not done anything to it whatsoever, nor was there any evide
nce of looseness or an oil leak in that area, the broken part was just sitt
ing there, I then jiggled the other upper bolts by hand and =C2-. . . 2 o
f them were just finger tight!. =C2-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.=C2-=C2- =C2- Any advice appreci
ated. Also . . . is the plane grounded until the repair??=C2- =C2-Thank
s in advance=C2- =C2-David Wentzell - =C2-N233DW
On Monday, March 16, 2015 3:24 AM, RV-List Digest Server <rv-list@matr
onics.com> wrote:
*
========================
=C2- 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.=C2- The .html file includes the Digest format
ted
in HTML for viewing with a web browser and features Hyperlinked Indexes
and Message Navigation.=C2- The .txt file includes the plain ASCII versio
n
of the RV-List Digest and can be viewed with a generic text editor
such as Notepad or with a web browser.
HTML Version:
=C2- =C2- http://www.matronics.com/digest/digestview.php?Style=82701&
View=html&Chapter 15-03-15&Archive=RV
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View=txt&Chapter 15-03-15&Archive=RV
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=C2- =C2- =C2- =C2- =C2- -Matt Dralle, List Admin.
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Subject: | Re: RV-List Digest: 0 Msgs - 03/15/15 |
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@matronics.com
[mailto:owner-rv-list-server@matronics.com] On Behalf Of d wntzl
Sent: Monday, March 16, 2015 12:45 PM
Subject: RV-List: 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@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
<http://www.matronics.com/digest/digestview.php?Style=82701&View=html&Chapte
r 15-03-15&Archive=RV> &View=html&Chapter 15-03-15&Archive=RV
Text Version:
http://www.matronics.com/digest/digestview.php?Style=82701
<http://www.matronics.com/digest/digestview.php?Style=82701&View=txt&Chapter
15-03-15&Archive=RV> &View=txt&Chapter 15-03-15&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:
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http -Matt Dralle, List Admin.======
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Subject: | Re: RV-List Digest: 0 Msgs - 03/15/15 |
Really? Mike is usually spot on but I find this to be an unfounded asserti
on. On what evidence does he base this opinion?
If this is true, thousands of aircraft over the last 50 years have been fly
ing in an unairworthy condition.
-GV
Note =93 Mike Busch has voiced his opinion (which I agree with) that
engine cylinders cannot be properly removed/replace without removing the en
gine from the aircraft as this impedes achieving correct cylinder bolt torq
ue.
-----Original Message-----
From: Carl Froehlich <carl.froehlich@verizon.net>
Sent: Mon, Mar 16, 2015 5:06 pm
Subject: RE: RV-List: Re: RV-List Digest: 0 Msgs - 03/15/15
I=99ll 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 =93 and perhaps this is what caused your sheared
bolt.
Note =93 Mike Busch has voiced his opinion (which I agree with) that
engine cylinders cannot be properly removed/replace without removing the en
gine from the aircraft as this impedes achieving correct cylinder bolt torq
ue.
Carl
From: owner-rv-list-server@matronics.com [mailto:owner-rv-list-server@matro
nics.com] On Behalf Of d wntzl
Sent: Monday, March 16, 2015 12:45 PM
Subject: RV-List: 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 qui
te annoying.) While doing an oil change recently, I discovered one of the t
op 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 loo
seness 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 jus
t 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 repa
ir??
Thanks in advance
David Wentzell - N233DW
On Monday, March 16, 2015 3:24 AM, RV-List Digest Server <rv-list@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=htm
l&Chapter 15-03-15&Archive=RV
Text Version:
http://www.matronics.com/digest/digestview.php?Style=82701&View=txt
&Chapter 15-03-15&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.======
http://www.matronics.com/Navigator?RV-List
http://forums.matronics.com
http://www.matronics.com/contribution
Message 4
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Subject: | Re: Cylinder stud repair |
There are several ways to remove a broken stud. I would consult with a
respected engine shop, like Barrett Performance, Lycon, Mattictuck, or
case overhauler such as Divco as to how they recommend removing the
broken stud, and consider also removing the other studs for that
cylinder, depending on very close examination with ten power magnifying
lens and/or some form of non-destructive testing to ensure nothing is
wrong with those studs.
As to reassemble on the airframe, Mike may be right about big
Continentals in Beech or Cessna airframes, particularly the cradle type
mount, but he is full of horse feathers on a Lycoming on a Dynafocal
mount.You just need the right cylinder wrenches and a good torque wrench
with long enough handle for the torque needed. The most important item
is to not move the crankshaft/prop when there is no torque on the
through bolts. Position the prop before removing torque to where it is
needed to remove that cylinder. If more needs to come apart, use torque
plate or stack of washers and nuts to retorque the case before moving to
another cylinder. Keeps the bearings secured in position.
On 3/16/2015 5:05 PM, Carl Froehlich wrote:
>
> Ill 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@matronics.com
> [mailto:owner-rv-list-server@matronics.com] *On Behalf Of *d wntzl
> *Sent:* Monday, March 16, 2015 12:45 PM
> *To:* rv-list@matronics.com
> *Subject:* RV-List: 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
>
>
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