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Old 08-23-2012, 10:00 PM   #1
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Roof leak

During my last trip my rear AC was leaking into the motorhome while traveling through a rainstorm. It had never happened before. I took the cowling to the AC off and could not get a fix on where the leak was coming from. Since I wasn't traveling and it wasn't raining, I was confused as to how to even troubleshoot this. Any ideas on what to do? Thank you all so much. Bill
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Old 08-23-2012, 10:37 PM   #2
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Hello
I would suspect that you have a bad seal along the front edge of the seal between the A/C unit and the roof.
Did you try hoseing it down from the front?
Bad news is it may mean lifting the A/C unit up to replace the seal.
Maybe some one who has had the same problem will post soon.
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Old 08-24-2012, 05:39 AM   #3
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It could be the mounting bolts need to be tightened. It is quite common for them to vibrate loose. Remove the interior shroude to access the bolts. Be careful not to over tighten or it will collapse the seal.
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Old 08-24-2012, 06:42 AM   #4
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AZbound is correct. There is a rubber seal that is leaking. take off the plastic cover inside. there are four bolts mounting the unit. tighten just a little bit. maybe one to one&onehalf turns. Thats what fixed mine.

FYI, it would be a big help if you could post your make, model & year of coach in your signature
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Old 08-24-2012, 12:06 PM   #5
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I'll try to figure that out. I'm I'm a 2003 HR Endeavor 40ft Model DST
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Old 08-24-2012, 06:09 PM   #6
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I think Don wins the grand prize.
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Old 08-25-2012, 10:06 AM   #7
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Will do today!! Looks like Issac may just try to push some water my way!

Next question is how to address those pesky creaking noises from the coach movement. Like in the windshield frame. Is there anything to be done for that?

I have many other items to ask about but not going to salvo this site.. Just yet!!!

Thanks alot for the help. I sincerely appreciate it. Great advice! Now I'll see if I did the signature thing right, too!

Bill
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Old 08-25-2012, 12:17 PM   #8
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It isn't necessarily the a/c that is the source of the leak. Once water gets under the roof, it runs along and drips out the first available opening, which is often the a/c housing. Check out nearby areas as well. And look up from inside and see if you can figure out which direction the water came from to get to the a/c opening.
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Old 08-25-2012, 03:20 PM   #9
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Thanks...makes sense... I'll look everywhere I can!!!
Bill
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Old 08-25-2012, 08:15 PM   #10
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I had an AC leaking condensate the last time I was out. The leveling system wasn't working ( another story). All it took was one more set of 2x10s under each wheel in the front to get the condensate to roll off the roof correctly. An 1 1/2 was all it needed so look closely if it was leaking through the unit or around the seal.
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Old 08-29-2012, 01:19 PM   #11
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I took the hood cowling back off. No water! I took the cover plate off from the indoor side. There was standing water in the sides. Could not see anywhere that was a wet leak from above the coverplate. I ran the AC all night and put a towel down. No water! With Issac it's starting to rain. So I'll check that out this pm. It doesn't seem like there's an opening anywhere anterior to this on the outside. So I'm still in the discovery phase... Thanks all. Bill
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Old 08-30-2012, 12:54 PM   #12
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Now this is interesting. No leak in AC after the hurricane bands blew through here but now a leak behind the tv over the dash!! There was water on the dashboard. Motorhome is tilting that way. Going to take the tv down to check it out. No happy about it but hope to find SOMETHING I can address!!!
Bill
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Old 08-30-2012, 02:24 PM   #13
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Simple answer is that you need to re-caulk and re-seal your roof. I do not know what type of roof you have, but a tape like 'Eternabond' (or similar) and some Dicor Self Leveling caulk should work. Roof needs to be cleaned and scraped of old putty first. Then all the seams long the front and rear caps, down the sides and around the vents should be taped, then the pipe and wire pass-throughs get caulked.

If its a 2003 and never been done before, its about time anyways..

http://www.bestmaterials.com/RV_roof_repair_info.aspx




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