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Old 12-15-2007, 03:11 PM   #1
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How to fix a leak coming through the a/c?

Hi gang,

I discovered my carpet was getting damp by the a/c. I've got the dehumidifier running in her, but the other day it was raining like mad so I went out into the coach. Sure enough, I found where the water was coming from: out of the rear vent of the air conditioner, on the street side corner.

My dad told me this is due to a bad "seal". What is this seal? Is it a big rubber gasket that goes on top of the roof and the a/c sits on it? How do you replace it? Do I have to pull the whole a/c unit up out of the roof, change the seal, and then put it all back together? If so, is that hard?

Also, my cover has some pretty bad cracks in the top of it. I didn't think that mattered so much, as the thing is vented on the sides so all kinds of rain can blow in there, but is the leaking cover something I need to replace too?

Is the short term solution for the winter to just put a tarp over the whole a/c unit?

How hard is it to fix this leak?

Thanks!
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Old 12-15-2007, 04:03 PM   #2
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Hi Jim,

What type of unit do you have? All modern roof units have a hard foam gasket that attaches to the bottom of the A/C unit with self stick tape. You have to remove the unit, prop it up or turn it over, scrape off all of the old gasket, clean thoroughly with solvent to remove any errant adhesives, re-apply the new gasket and reposition and re-attach the roof unit.

Be sure to mark the outer corners of the old gasket with masking tape BEFORE you remove it so you wll be able to adhere the new one in the same spot.

Replacement gaskets should be available from any well stocked RV supply store.
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Old 12-15-2007, 04:55 PM   #3
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Before I yanked the unit off I would check for two other things; #1 pop the interior cover and GENTLY snug up the four hold down bolts. Item #2 make sure the drain line is clear from the condensate pan.

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Old 12-16-2007, 07:53 AM   #4
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Thanks guys.

It's a Coleman Delta T. As it's doing freezing rain outside right now and is going to be ugly for the next several months, and I won't be camping any then, I will probably bungee a tarp over the whole thing and fix it in the spring. I'm not crazy about removing the roof unit during snow season

Fortunately I live out in the country with no neighbors....it'll be bad enough that I have to look at it with a tarp over the a/c.

When I lived in Washington, we used to joke that the blue tarp was the flag of the northwest
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Old 12-16-2007, 09:37 AM   #5
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Quote:
Originally Posted by JimGolden
Thanks guys.

It's a Coleman Delta T. As it's doing freezing rain outside right now and is going to be ugly for the next several months, and I won't be camping any then, I will probably bungee a tarp over the whole thing and fix it in the spring. I'm not crazy about removing the roof unit during snow season

Fortunately I live out in the country with no neighbors....it'll be bad enough that I have to look at it with a tarp over the a/c.

When I lived in Washington, we used to joke that the blue tarp was the flag of the northwest
Hey Jim,

Get silver tarp! That will solve your problem .
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Old 12-16-2007, 10:57 AM   #6
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Quote:
Originally Posted by lewster
Hey Jim,

Get silver tarp! That will solve your problem .
or Camo....then you will forget where you parked it

Aaron
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