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General Discussion of preventative/corrective maintenance and other technical issues regarding your coach that are not covered in other Mechanic's Corner categories (ex. refrigerators, water heaters, and compressors).

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  #1  
Old 09-06-2014
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Default Pressurizing Coach - Searching for roof leak

Its been suggested that finding a roof leak can be simplified by pressurizing the coach and using soapy water on the roof to locate leaks.

Anybody every done this? How is it done AND if you have to "hire it done" as us techno-challenged people have to do, what does it cost?
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Old 09-06-2014
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I tried this with a home made set up using a military blower driven by a gas engine.
all i found was air leaking around the window vents and door seal.
It would take a huge blower to pressurize a wanderlodge to find a water leak.
and then i would be worried about blowing a window out...
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Old 09-06-2014
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Not sure about the pressurization technique but I have seen the one where they use high frequency to find leaks. They but the transmitter inside your bus and then from the outside sniff for leaks. I think upper end auto glass companies can offer this service.
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Old 09-06-2014
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Quote:
Originally Posted by rtpn60 View Post
Not sure about the pressurization technique but I have seen the one where they use high frequency to find leaks. They but the transmitter inside your bus and then from the outside sniff for leaks. I think upper end auto glass companies can offer this service.
http://products.inficon.com/en-us/na...lsforHVAC-R%2F leak detector.

The optional transmitter might do the job.
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  #5  
Old 09-06-2014
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Tommy,
I have a devise here - given to me by an old time body shop guy - that was used to find water leaks in his body shop. You place this sender inside a vehicle and it has receiver that emits a sound when passing over an area that has a leak. This was a rather expensive devise (around $1K) when he bought it - I thing back in the 70's. I haven't played with it and don't even know if it still works. - - - Just thought I would pass this on. Maybe we will play with it next time you (or anybody else) are here.
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Old 09-06-2014
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Thanks, KC

I'll take you up on it. In the meantime I am chasing a leak from @#ll - just a slight drip when we have a really hard rain. I've replaced nearly every screw and used loads of DiCor, but it still alludes me. I'm beginning to think it might be coming from the roof joint up near the front cap. Maybe a strip of Eterna-Bond over it.

No doubt, Martha and I will want to enjoy some warm weather this winter, so put us on the list.

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Old 09-06-2014
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Wouldn't it be easier to fill the bus with dyed A.C. oil and scan the outside with black light?
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Old 09-06-2014
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Default Leak detection

I have one of those devices it is an Ultrasonic Leak Detection Unit. I have used it to find refrigerator door leaks and it worked well. I have not used it for roof leaks but will experiment and see. I will bring the unit to Quartzite and we can test it on other coaches.
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Old 09-06-2014
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At this moment I'm thinking my son's Boston Terrier and a bag of sweet potato chips would do the trick for you. Feed this critter the chips, close him up inside the bus for an hour or two and crawl around on the roof and every time your eyes started tearing up you'll be close to a leak.
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  #10  
Old 09-06-2014
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Quote:
Originally Posted by CaptPegLeg View Post
At this moment I'm thinking my son's Boston Terrier and a bag of sweet potato chips would do the trick for you. Feed this critter the chips, close him up inside the bus for an hour or two and crawl around on the roof and every time your eyes started tearing up you'll be close to a leak.

Now that was funny. I don't see why we have to involve a dog in this. We could all get together and eat beans eggs and cheese and sit in the coach the next day and let nature take it's course. ALL FOR THE GOOD OF THE WOG FAMILY. Maybe add some beer to the mix.

Might be better off just living with the leak.
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