Home » Public Forums » GMCnet » [GMCnet] Onan Muffler Bracket
| [GMCnet] Onan Muffler Bracket [message #75666] |
Thu, 04 March 2010 16:22  |
amansfield1104
Messages: 80
Registered: August 2009
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I just started to maintained the generator so that I could use it. I found an exhaust leak were the muffler mounts to the exhaust manifold. I took off the muffler and was surprised to find it was loose and held on by two self tapping screws into the exhaust manifold and clamp that did not seal the exhaust. The muffler mounting bracket was broken. The vertical pipe was the wrong size. I fixed the pipe 1 3/8 and it now fits 1 1/4. Has anyone had to build a new bracket to hold the muffler and if so how. From looking at the few views in the manuals it looks like the muffler is supposed to be rigid mount.
Thanks
Art Mansfield
76 EL
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| Re: [GMCnet] Onan Muffler Bracket [message #75679 is a reply to message #75677] |
Thu, 04 March 2010 17:58  |
amansfield1104
Messages: 80
Registered: August 2009
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I am thinking of building a bracket that would mount to starter to replace the broken bracket.
On Mar 4, 2010, at 5:40 PM, amansfield1104@charter.net wrote:
> That would work but the bracket for the muffler is broken
> On Mar 4, 2010, at 5:05 PM, Bruce Hislop wrote:
>
>>
>>
>> I used a short piece of Uni-strut and bolted that to the bracket for the muffler. I then used a couple large stainless steel hose clamps to clamp the muffler to the uni-strut.
>>
>> Uni-strut runs parallel to the muffler with the open end towards the muffler to accommodate the curve of the muffler housing.
>>
>> --
>> Bruce Hislop,
>> S. Ontario Canada
>> 77PB, 455 Dick P. rebuilt, DynamicEFI EBL EFI and ESC.
>> http://www.gmcmhphotos.com/photos/showphoto.php?photo=29001
>> _______________________________________________
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| Re: [GMCnet] Onan Muffler Bracket [message #75692 is a reply to message #75679] |
Thu, 04 March 2010 22:43 |
jimk
Messages: 6734
Registered: July 2006
Location: Belmont, CA
Karma: 9
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Do not mount anything to the starter bracket. It is known to break.
There is a muffler bracket one needs to cut off the old muffler and reuse.
On Thu, Mar 4, 2010 at 3:58 PM, amansfield1104@charter.net
<amansfield1104@charter.net> wrote:
> I am thinking of building a bracket that would mount to starter to replace the broken bracket.
>
> On Mar 4, 2010, at 5:40 PM, amansfield1104@charter.net wrote:
>
>> That would work but the bracket for the muffler is broken
>> On Mar 4, 2010, at 5:05 PM, Bruce Hislop wrote:
>>
>>>
>>>
>>> I used a short piece of Uni-strut and bolted that to the bracket for the muffler. I then used a couple large stainless steel hose clamps to clamp the muffler to the uni-strut.
>>>
>>> Uni-strut runs parallel to the muffler with the open end towards the muffler to accommodate the curve of the muffler housing.
>>>
>>> --
>>> Bruce Hislop,
>>> S. Ontario Canada
>>> 77PB, 455 Dick P. rebuilt, DynamicEFI EBL EFI and ESC.
>>> http://www.gmcmhphotos.com/photos/showphoto.php?photo=29001
>>> _______________________________________________
>>> GMCnet mailing list
>>> List Information and Subscription Options:
>>> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
>>
>> _______________________________________________
>> GMCnet mailing list
>> List Information and Subscription Options:
>> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
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> _______________________________________________
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--
Jim Kanomata
Applied/GMC, Fremont,CA
jimk@appliedairfilters.com
http://www.appliedgmc.com
1-800-752-7502
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Applied/GMC
jimk@appliedairfilters.com
www.appliedgmc.com
1-800-752-7502
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| Re: [GMCnet] Onan Muffler Bracket [message #75693 is a reply to message #75666] |
Thu, 04 March 2010 22:47 |
jimk
Messages: 6734
Registered: July 2006
Location: Belmont, CA
Karma: 9
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Art,
I think your unit was worked by someone that did not understand
fasteners as there are no screws used on the exhaust manifold to the
pipe.
I'll bet you have a 73-75 coach?
On Thu, Mar 4, 2010 at 2:22 PM, amansfield1104@charter.net
<amansfield1104@charter.net> wrote:
> I just started to maintained the generator so that I could use it. I found an exhaust leak were the muffler mounts to the exhaust manifold. I took off the muffler and was surprised to find it was loose and held on by two self tapping screws into the exhaust manifold and clamp that did not seal the exhaust. The muffler mounting bracket was broken. The vertical pipe was the wrong size. I fixed the pipe 1 3/8 and it now fits 1 1/4. Has anyone had to build a new bracket to hold the muffler and if so how. From looking at the few views in the manuals it looks like the muffler is supposed to be rigid mount.
>
> Thanks
> Art Mansfield
> 76 EL
> _______________________________________________
> GMCnet mailing list
> List Information and Subscription Options:
> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
>
--
Jim Kanomata
Applied/GMC, Fremont,CA
jimk@appliedairfilters.com
http://www.appliedgmc.com
1-800-752-7502
_______________________________________________
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Jim Kanomata
Applied/GMC
jimk@appliedairfilters.com
www.appliedgmc.com
1-800-752-7502
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| Re: [GMCnet] Onan Muffler Bracket [message #75726 is a reply to message #75666] |
Fri, 05 March 2010 13:31 |
Dennis S
Messages: 3046
Registered: November 2005
Karma: 2
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Art,
The muffler has a metal tongue welded to it which has two holes -- and is attached with two bolts (1/4 20 by about 1 inch). The attachment point as I recall is either on the fan shroud or the cross member.
My answer may not be clear -- but maybe someone has a photo....
Dennis Sexton
73 GMC
Germantown, TN
USA
-----Original Message-----
From: amansfield1104@charter.net <amansfield1104@charter.net>
To: gmclist@temp.gmcnet.org
Sent: Fri, Mar 5, 2010 12:01 pm
Subject: Re: [GMCnet] Onan Muffler Bracket
I just went out a cleaned some of the grease off of where I thought a bracket
as mounted. It looks like part of the casting. If so still need a way to
upport the muffler to the generator. I can attach it to the muffler if a i can
ttach it to the generator. The only way I see is by the starter but as Jim
ointed out that is a weak point. Any ideas? The head on the exhaust exit side
lready has one broken bolt in the head now. I have not tried to take out the
olt yet but my luck with easyouts has not been to good.
Art
6 EL
n Mar 5, 2010, at 11:41 AM, amansfield1104@charter.net wrote:
> Mine is 76 EL. The bracket I need is the one the muffler mounts to. As for
ho did the mod's I assume it was the one who owned before me. Who ever it was
ust rigged it to get by. The pipe to the manifold was the wrong size and to
eep it on he added the screws. I have fixed the pipe size with a reducer. I
o not what to do if I cannot mount a bracket to where the starter attaches. I
ee where the original bracket was mounted but cannot get it off. It looks like
have to take the generator apart to get the remains of the bracket off. I
annot find any directions as to how it is attached or how it comes off.
Art
76 EL
On Mar 4, 2010, at 10:47 PM, Jim Kanomata wrote:
> Art,
> I think your unit was worked by someone that did not understand
> fasteners as there are no screws used on the exhaust manifold to the
> pipe.
> I'll bet you have a 73-75 coach?
>
> On Thu, Mar 4, 2010 at 2:22 PM, amansfield1104@charter.net
> <amansfield1104@charter.net> wrote:
>> I just started to maintained the generator so that I could use it. I found
n exhaust leak were the muffler mounts to the exhaust manifold. I took off the
uffler and was surprised to find it was loose and held on by two self tapping
crews into the exhaust manifold and clamp that did not seal the exhaust. The
uffler mounting bracket was broken. The vertical pipe was the wrong size. I
ixed the pipe 1 3/8 and it now fits 1 1/4. Has anyone had to build a new
racket to hold the muffler and if so how. From looking at the few views in
he manuals it looks like the muffler is supposed to be rigid mount.
>>
>> Thanks
>> Art Mansfield
>> 76 EL
>> _______________________________________________
>> GMCnet mailing list
>> List Information and Subscription Options:
>> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
>>
>
>
>
> --
> Jim Kanomata
> Applied/GMC, Fremont,CA
> jimk@appliedairfilters.com
> http://www.appliedgmc.com
> 1-800-752-7502
> _______________________________________________
> GMCnet mailing list
> List Information and Subscription Options:
> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
_______________________________________________
GMCnet mailing list
List Information and Subscription Options:
http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
_______________________________________________
MCnet mailing list
ist Information and Subscription Options:
ttp://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
_______________________________________________
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Dennis S
73 Painted Desert 230
Memphis TN Metro
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| Re: [GMCnet] Onan Muffler Bracket [message #75731 is a reply to message #75726] |
Fri, 05 March 2010 17:11 |
Kingsley Coach
Messages: 2691
Registered: March 2009
Location: Nova Scotia Canada
Karma: -34
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Senior Member |
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Look in the green parts book...does it show it there?
Mike in NS
On Fri, Mar 5, 2010 at 3:31 PM, <dennisfsexton@aol.com> wrote:
>
> Art,
> The muffler has a metal tongue welded to it which has two holes -- and is
> attached with two bolts (1/4 20 by about 1 inch). The attachment point as I
> recall is either on the fan shroud or the cross member.
> My answer may not be clear -- but maybe someone has a photo....
>
>
> Dennis Sexton
> 73 GMC
> Germantown, TN
> USA
>
>
>
> -----Original Message-----
> From: amansfield1104@charter.net <amansfield1104@charter.net>
> To: gmclist@temp.gmcnet.org
> Sent: Fri, Mar 5, 2010 12:01 pm
> Subject: Re: [GMCnet] Onan Muffler Bracket
>
>
> I just went out a cleaned some of the grease off of where I thought a
> bracket
> as mounted. It looks like part of the casting. If so still need a way to
> upport the muffler to the generator. I can attach it to the muffler if a i
> can
> ttach it to the generator. The only way I see is by the starter but as Jim
> ointed out that is a weak point. Any ideas? The head on the exhaust exit
> side
> lready has one broken bolt in the head now. I have not tried to take out
> the
> olt yet but my luck with easyouts has not been to good.
> Art
> 6 EL
> n Mar 5, 2010, at 11:41 AM, amansfield1104@charter.net wrote:
> > Mine is 76 EL. The bracket I need is the one the muffler mounts to. As
> for
> ho did the mod's I assume it was the one who owned before me. Who ever it
> was
> ust rigged it to get by. The pipe to the manifold was the wrong size and
> to
> eep it on he added the screws. I have fixed the pipe size with a reducer.
> I
> o not what to do if I cannot mount a bracket to where the starter attaches.
> I
> ee where the original bracket was mounted but cannot get it off. It looks
> like
> have to take the generator apart to get the remains of the bracket off. I
> annot find any directions as to how it is attached or how it comes off.
>
> Art
> 76 EL
>
> On Mar 4, 2010, at 10:47 PM, Jim Kanomata wrote:
>
> > Art,
> > I think your unit was worked by someone that did not understand
> > fasteners as there are no screws used on the exhaust manifold to the
> > pipe.
> > I'll bet you have a 73-75 coach?
> >
> > On Thu, Mar 4, 2010 at 2:22 PM, amansfield1104@charter.net
> > <amansfield1104@charter.net> wrote:
> >> I just started to maintained the generator so that I could use it. I
> found
> n exhaust leak were the muffler mounts to the exhaust manifold. I took off
> the
> uffler and was surprised to find it was loose and held on by two self
> tapping
> crews into the exhaust manifold and clamp that did not seal the exhaust.
> The
> uffler mounting bracket was broken. The vertical pipe was the wrong size.
> I
> ixed the pipe 1 3/8 and it now fits 1 1/4. Has anyone had to build a new
> racket to hold the muffler and if so how. From looking at the few views
> in
> he manuals it looks like the muffler is supposed to be rigid mount.
> >>
> >> Thanks
> >> Art Mansfield
> >> 76 EL
> >> _______________________________________________
> >> GMCnet mailing list
> >> List Information and Subscription Options:
> >> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
> >>
> >
> >
> >
> > --
> > Jim Kanomata
> > Applied/GMC, Fremont,CA
> > jimk@appliedairfilters.com
> > http://www.appliedgmc.com
> > 1-800-752-7502
> > _______________________________________________
> > GMCnet mailing list
> > List Information and Subscription Options:
> > http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
>
> _______________________________________________
> GMCnet mailing list
> List Information and Subscription Options:
> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
> _______________________________________________
> MCnet mailing list
> ist Information and Subscription Options:
> ttp://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
>
> _______________________________________________
> GMCnet mailing list
> List Information and Subscription Options:
> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
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--
Michael Beaton
1977 Kingsley 26-11
1977 Eleganza II 26-3
Antigonish, NS
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| Re: [GMCnet] Onan Muffler Bracket [message #75735 is a reply to message #75693] |
Fri, 05 March 2010 11:41 |
amansfield1104
Messages: 80
Registered: August 2009
Karma: 0
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Member |
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Mine is 76 EL. The bracket I need is the one the muffler mounts to. As for who did the mod's I assume it was the one who owned before me. Who ever it was just rigged it to get by. The pipe to the manifold was the wrong size and to keep it on he added the screws. I have fixed the pipe size with a reducer. I do not what to do if I cannot mount a bracket to where the starter attaches. I see where the original bracket was mounted but cannot get it off. It looks like I have to take the generator apart to get the remains of the bracket off. I cannot find any directions as to how it is attached or how it comes off.
Art
76 EL
On Mar 4, 2010, at 10:47 PM, Jim Kanomata wrote:
> Art,
> I think your unit was worked by someone that did not understand
> fasteners as there are no screws used on the exhaust manifold to the
> pipe.
> I'll bet you have a 73-75 coach?
>
> On Thu, Mar 4, 2010 at 2:22 PM, amansfield1104@charter.net
> <amansfield1104@charter.net> wrote:
>> I just started to maintained the generator so that I could use it. I found an exhaust leak were the muffler mounts to the exhaust manifold. I took off the muffler and was surprised to find it was loose and held on by two self tapping screws into the exhaust manifold and clamp that did not seal the exhaust. The muffler mounting bracket was broken. The vertical pipe was the wrong size. I fixed the pipe 1 3/8 and it now fits 1 1/4. Has anyone had to build a new bracket to hold the muffler and if so how. From looking at the few views in the manuals it looks like the muffler is supposed to be rigid mount.
>>
>> Thanks
>> Art Mansfield
>> 76 EL
>> _______________________________________________
>> GMCnet mailing list
>> List Information and Subscription Options:
>> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
>>
>
>
>
> --
> Jim Kanomata
> Applied/GMC, Fremont,CA
> jimk@appliedairfilters.com
> http://www.appliedgmc.com
> 1-800-752-7502
> _______________________________________________
> GMCnet mailing list
> List Information and Subscription Options:
> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
_______________________________________________
GMCnet mailing list
List Information and Subscription Options:
http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
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| Re: [GMCnet] Onan Muffler Bracket [message #75740 is a reply to message #75735] |
Fri, 05 March 2010 12:01 |
amansfield1104
Messages: 80
Registered: August 2009
Karma: 0
|
Member |
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I just went out a cleaned some of the grease off of where I thought a bracket was mounted. It looks like part of the casting. If so still need a way to support the muffler to the generator. I can attach it to the muffler if a i can attach it to the generator. The only way I see is by the starter but as Jim pointed out that is a weak point. Any ideas? The head on the exhaust exit side already has one broken bolt in the head now. I have not tried to take out the bolt yet but my luck with easyouts has not been to good.
Art
76 EL
On Mar 5, 2010, at 11:41 AM, amansfield1104@charter.net wrote:
> Mine is 76 EL. The bracket I need is the one the muffler mounts to. As for who did the mod's I assume it was the one who owned before me. Who ever it was just rigged it to get by. The pipe to the manifold was the wrong size and to keep it on he added the screws. I have fixed the pipe size with a reducer. I do not what to do if I cannot mount a bracket to where the starter attaches. I see where the original bracket was mounted but cannot get it off. It looks like I have to take the generator apart to get the remains of the bracket off. I cannot find any directions as to how it is attached or how it comes off.
>
> Art
> 76 EL
>
> On Mar 4, 2010, at 10:47 PM, Jim Kanomata wrote:
>
>> Art,
>> I think your unit was worked by someone that did not understand
>> fasteners as there are no screws used on the exhaust manifold to the
>> pipe.
>> I'll bet you have a 73-75 coach?
>>
>> On Thu, Mar 4, 2010 at 2:22 PM, amansfield1104@charter.net
>> <amansfield1104@charter.net> wrote:
>>> I just started to maintained the generator so that I could use it. I found an exhaust leak were the muffler mounts to the exhaust manifold. I took off the muffler and was surprised to find it was loose and held on by two self tapping screws into the exhaust manifold and clamp that did not seal the exhaust. The muffler mounting bracket was broken. The vertical pipe was the wrong size. I fixed the pipe 1 3/8 and it now fits 1 1/4. Has anyone had to build a new bracket to hold the muffler and if so how. From looking at the few views in the manuals it looks like the muffler is supposed to be rigid mount.
>>>
>>> Thanks
>>> Art Mansfield
>>> 76 EL
>>> _______________________________________________
>>> GMCnet mailing list
>>> List Information and Subscription Options:
>>> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
>>>
>>
>>
>>
>> --
>> Jim Kanomata
>> Applied/GMC, Fremont,CA
>> jimk@appliedairfilters.com
>> http://www.appliedgmc.com
>> 1-800-752-7502
>> _______________________________________________
>> GMCnet mailing list
>> List Information and Subscription Options:
>> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
>
> _______________________________________________
> GMCnet mailing list
> List Information and Subscription Options:
> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
_______________________________________________
GMCnet mailing list
List Information and Subscription Options:
http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
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