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08-30-2019, 08:59 PM
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#1
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2 Rivet Member
2018 23' International
Guilford
, Connecticut
Join Date: Jul 2018
Posts: 74
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Rooftop Dometic crazy
Was working fine when we towed her home a year ago. Tried testing the roof top a/c heat pump today and it shakes the roof and and makes a very loud vibrational racket as if it was missing a cylinder. Any ideas?
__________________
Pop & Mimms - because our grandchildren say so
2018 23FB International Serenity "Pimm's Cup"
2019 Tundra
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08-30-2019, 09:29 PM
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#2
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Rivet Master
2012 Avenue Coach
Corpus Christi
, Texas
Join Date: Feb 2018
Posts: 1,719
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Can you safely go up and take the cover off to look inside? Sometimes mud daubers like to nest in there. Could be a nest on a fan blade sending it way way out of balance. Worth a look.
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08-31-2019, 12:01 AM
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#3
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3 Rivet Member
1988 Argosy 32
Lomita
, California
Join Date: Aug 2012
Posts: 181
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if you do go up take a can of wasp spray with you and watch from afar, they will be Pi---d
off to have the home doing 2500 rpm ?.
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08-31-2019, 04:39 AM
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#4
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Rivet Master
1977 31' Sovereign
Tampa Bay
, ^
Join Date: Jun 2002
Posts: 762
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Had a similar issue and found a huge tree frog bouncing around off the fan. What a mess.
__________________
Out in the woods, or in the city, It's all the same to me.
When I'm drivin' free, the world's my home....When I'm mobile.
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08-31-2019, 05:03 AM
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#5
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"Cloudsplitter"
2003 25' Classic
Houstatlantavegas
, Malebolgia
Join Date: Jun 2007
Posts: 20,000
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YEP...Them daubers love the "mouse wheel".
I soak the nest so I don't damage the blades.
After the first time it happened I had some straightening to do.🥴
POI...they also like the exhaust tube of the furnace 🦟
Bob
🇺🇸
__________________
I’m done with ‘adulting’…Let’s go find Bigfoot.
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08-31-2019, 07:13 AM
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#6
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Rivet Master
2019 30' International
Pennsylvania
, Pennsylvania
Join Date: May 2016
Posts: 1,242
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I'm going with the mud wasp. Climb up there, stay on the seams (follow the rivet lines), don't crawl on the endcaps, and remove the a/c shroud. Locate the squirrel cage fan. Look real close because some times they are hard to find. Probably attached to the inside of the fan wheel some where.
The one time I had this issue I removed the mud nest with a thin screwdriver.
With that being said, it could be something else, but in my experience the old mud wasp would be the first thing to check for.
__________________
If you ain't havin' fun you ain't doin' it right
2017 Ford CCSB F250 XLT 6.2L Gas 4x4 4:30 rear Leer Topper Ruby Red
2019 International Serenity 30 Rear Twin
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08-31-2019, 01:12 PM
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#7
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2 Rivet Member
2018 23' International
Guilford
, Connecticut
Join Date: Jul 2018
Posts: 74
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Thanks all. I’m hoping it’s that simple. Will check when I can get up top.
__________________
Pop & Mimms - because our grandchildren say so
2018 23FB International Serenity "Pimm's Cup"
2019 Tundra
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08-31-2019, 01:32 PM
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#8
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The Aluminum Tent 3
2014 23' Flying Cloud
Park City
, Utah
Join Date: Aug 2015
Posts: 2,157
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Quote:
Originally Posted by Pimms
Thanks all. I’m hoping it’s that simple. Will check when I can get up top.
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I'm going out on a pretty fat limb...and saying that's your problem.
Also, you can take off the shroud without getting on the roof. Just do each side at a time, leaning a ladder against the trailer with a towel or blank or foam pull noodles or whatever, protecting the trailer.
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