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Old 02-19-2020, 10:24 AM   #1
Almost There
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Join Date: Sep 2019
Location: Melbourne, FL
Posts: 90
Year: 2003
Coachwork: Thomas
Chassis: Saf-T-Liner MVP EF
Engine: Cat C7
Rated Cap: 29 (Perimeter Seating)
mounting internal part of rooftop air con

i have a dometic penguin 2 installed on the curved roof, but cant figure out how to install the plastic inside air distribution box (ADB, they are a matched set but came with no instructions). the internal metal 'clamping' plate is much smaller than the adb and has no screw holes for it. it appears that the adb needs a flat framework to attach to on the ceiling which is of course curved. The ADB does not have any flexibility to bend.

has anyone run into this issue, or have any idea how to solve it? i can run tools but cant visualize the finished product in this case. could it be something that gets pushed up into the (to be enlarged) 14" hole?

thanks for any ideas

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Old 02-19-2020, 10:55 AM   #2
Bus Geek
Join Date: May 2016
Location: Eastern WA
Posts: 6,401
Year: 2002
Coachwork: Bluebird
Chassis: All American RE (A3RE)
Engine: Cummins ISC (8.3)
Rated Cap: 72
I have installed at least five roof airs on buses and not run into the issue that you are seeing. The inside trim conformed to the curved ceiling easily. You have a larger gap in the center than what I saw. Also, four of them went into bus with a fabric headliner that was thick enough that it hid any gap that may have remained.
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Old 02-19-2020, 11:11 AM   #3
Bus Crazy
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Join Date: Oct 2017
Location: Virginia
Posts: 2,231
Year: 1971
Coachwork: Wayne
Chassis: International Loadstar 1700
Engine: 345 international V-8
They are meant to go on a flat ceiling, and to be screwed to the ceiling. You could take a piece of wood and cut it to the curve of the roof to use as a filler. So the wood would be the thickness at the middle as shown in your picture and taper to nothing at the ends. Make one for each end.
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Old 02-19-2020, 11:30 AM   #4
Bus Geek
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Join Date: Jan 2019
Location: Philadelphia
Posts: 6,849
Year: 2003
Coachwork: International
Chassis: CE 300
Engine: DT466e
Rated Cap: 65C-43A
Convert your pic to PNG format to make sure it displays in the orientation it should be in.
Rusty 87 build thread
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