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Old 05-11-2016, 09:11 AM   #1
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Repairing a water supply line under shower

Good morning all,

I have a '99 Southwind 36Z.

In March, I got ready for a trip down to Daytona from DC. When I put water in the fresh tank and turned on the pump, water started draining from an area in the "crawl space" behind the storage bays. I looked in from the storage bay where the fresh water drain is and could see it flowing down where the supply lines (which are PVC by the way) go up into the coach.

I hooked a camera up to a remote control car with a light and drove it to the point where the supply lines ascend (since it was about 6 feet away and nobody is fitting in there) but there is Styrofoam covering the entry point. I pulled out the access panels under the sink and put the kitchen slide out to see all the plumbing behind there. It seems as if the supply lines to the coach come up under the shower inside a steel trough.

I am willing to bet that the 90 degree elbow at the top of the riser that turns and comes out under the shower has separated (versus broken, based on the flow of water). But it looks as if I will have to remove the entire shower, frame and subfloor to get to it. That seems absolutely crazy to me, but that stuff doesn't move and is a very small space.

Any advice?

Thanks,

Juan
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Old 05-11-2016, 01:32 PM   #2
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I had a '99 Bounder. Which was plumbed with CPVC. As I recall, you may consider attacking this issue from the bedroom side of the wall. (provided our floor plans were similar) The bedroom side may be an easier repair/replace.
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Old 05-18-2016, 05:57 AM   #3
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Quote:
Originally Posted by ByeTheWay View Post
I had a '99 Bounder. Which was plumbed with CPVC. As I recall, you may consider attacking this issue from the bedroom side of the wall. (provided our floor plans were similar) The bedroom side may be an easier repair/replace.
Thanks for the input. Unfortunately, attacking from the bedroom is not an option. The sink is to the left of the shower and the only lines under it are the supply lines to the faucet. I can see where all the lines are coming in and being distributed, but I have to pull the entire shower stall out to get to them. I'm going to attack it this weekend. I may even just pull ALL of the CPVC out and replace with Flex or PEX.
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Old 06-02-2016, 07:21 AM   #4
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A good plumber friend of mine suggested that before I pull the shower out, to use the fitting to push the water out of the lines for winterizing and blow air through the system to try to isolate the leak.

If it is possible that the leak is not under the shower, I will save myself a ton of headache. If it is under the shower, then at least I know it for sure. He told me, and rightly so, that I didn't want to go through pulling all that out (and giving myself the added work of repairing any trim pieces) and possibly find that the leak is not there.

He also said, again, rightly so, that it is far less messy or potentially damaging to run air though the system to locate the leak than to run water. Going to try to do that this weekend. I wasn't able to do it last time I was at the coach.

Boy oh Boy, I surely hope that I can avoid pulling the entire bathroom apart.
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Old 06-03-2016, 10:26 PM   #5
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By your description, the sink is to the left of the shower. So is my southwind. I had a leak under the shower. the sink cabinet, the very bottom of it, I was able to lift it off and gained great access to most of the piping under there. If your shower base is fairly high off the floor, you can also cut an access hole under the pan level obviously just the face and get in through there. they sell little access covers that can be put over it to hide the hole you cut. I would try going through the cabinet floor first and then see what other options you might have.
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Old 06-04-2016, 11:54 PM   #6
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Quote:
Originally Posted by buzz57 View Post
By your description, the sink is to the left of the shower. So is my southwind. I had a leak under the shower. the sink cabinet, the very bottom of it, I was able to lift it off and gained great access to most of the piping under there. If your shower base is fairly high off the floor, you can also cut an access hole under the pan level obviously just the face and get in through there. they sell little access covers that can be put over it to hide the hole you cut. I would try going through the cabinet floor first and then see what other options you might have.
Thanks for the input. Only access to sink lines through the floor under the sink. I was trying to avoid pulling the shower out, but I don't think there's a choice though.
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Old 06-05-2016, 06:38 AM   #7
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How about cutting the metal pan from underneath the coach? I would gain access in any way possible without having to remove the shower.
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Old 06-05-2016, 09:28 AM   #8
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Repairing a water supply line under shower

I have a nearly-identical arrangement of corner shower and vanity. My shower pan has an air grille at floor-level that is large enough for my entire arm to fit through. I can see most of the supply lines, and all of the drain plumbing through this hole, up to the point where an elbow turns straight down through the floor. I also have a screw-on panel below the sink that allows access to the back side of the faucet/diverter for maintenance and repair. Does yours have something similar?


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Old 06-06-2016, 03:56 PM   #9
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My shower on my bounder is partially on top of my wheel well. I once had to access a pipe for a similar reason and gained access via the wheel well exterior. Oddly, there was already a hole/patchwork there from someone previously being in the exact spot. I cut away his urethane, opened the hole, did what I had to do, re-urethaned and added 2 screws for good measure. It was an extreme case, but I am confident that the patch will hold for many many years to come.
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Old 06-08-2016, 08:42 AM   #10
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Quote:
Originally Posted by mojoracing View Post
How about cutting the metal pan from underneath the coach? I would gain access in any way possible without having to remove the shower.
Unfortunately, the are that I would have to access is not accessibly from underneath the coach. it is in the "crawl space" between the storage compartments. I use that term loosely, as there is no room to crawl in there at all. I can clearly see the two supply lines going up and into the coach. I strapped a camera to a remote controlled car and ran it to the point of the riser. Unfortunately, the access point is covered by Styrofoam and I can't see it....
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Old 06-08-2016, 08:47 AM   #11
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Quote:
Originally Posted by slowmachine View Post
I have a nearly-identical arrangement of corner shower and vanity. My shower pan has an air grille at floor-level that is large enough for my entire arm to fit through. I can see most of the supply lines, and all of the drain plumbing through this hole, up to the point where an elbow turns straight down through the floor. I also have a screw-on panel below the sink that allows access to the back side of the faucet/diverter for maintenance and repair. Does yours have something similar?


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Mike,

Unfortunately, I have no vent grill there. I pulled out the alarm near the floor and can see in there, but there isn't even enough space for me to get a hand in, let alone and arm or tools. I can clearly see the supply lines to the sink underneath the sink cabinet, but they run forward and under the shower stall. I cal clearly see all the plumbing underneath and behind the shower stall from the access port under the kitchen sink with the kitchen/LR slide all the way out. it is a very small space, and I'm not convinced that the plumbing that I see is where the leak is. I still believe that it is at the elbow that turns from the riser in the crawl space, 90 degrees under the shower exiting from under the shower platform and into the coach where I can see it.

Juan
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Old 06-08-2016, 08:49 AM   #12
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Quote:
Originally Posted by superk View Post
My shower on my bounder is partially on top of my wheel well. I once had to access a pipe for a similar reason and gained access via the wheel well exterior. Oddly, there was already a hole/patchwork there from someone previously being in the exact spot. I cut away his urethane, opened the hole, did what I had to do, re-urethaned and added 2 screws for good measure. It was an extreme case, but I am confident that the patch will hold for many many years to come.
I'll take another look. I'm pretty sure that I investigated that already and while there is a small access panel in the wheel well, I believe that I found it to access something else. I would love to be that lucky though.

Juan
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Old 06-08-2016, 08:57 AM   #13
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Here's the view from the access panels under the kitchen sink...
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Old 06-08-2016, 09:08 AM   #14
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Here is a view from the access panel under the kitchen sink... in the center of the picture, you see two lines that descend under the shower platform, I think that the leak is in the cold water supply line at a joint where it goes down into the basement area
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