| water leak on wall behind drivers seat in a 1973 [message #312348] |
Sun, 22 January 2017 11:47  |
Ronald Pottol
Messages: 505
Registered: September 2012
Location: Redwood City, California
Karma: -2
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A coach I'm looking at buying has developed a leak since I saw it last summer (the coach is usually garaged, but was out in our recent rains to be shown). The leak is from the bottom forward curve of the window, down to the floor, in the area of the steps behind the drivers seat. Suggestions for good write ups on fixing this, and what I should plan on having on hand to do the work?
1973 26' GM outfitted
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| Re: [GMCnet] water leak on wall behind drivers seat in a 1973 [message #312350 is a reply to message #312348] |
Sun, 22 January 2017 12:42  |
sgltrac
Messages: 2797
Registered: April 2011
Karma: 1
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Carefully note the posture of the vehicle when it was leaking( level/front
low/front high etc). Remove interior in the area and with coach at same
attitude flow water on the center of the roof directly inboard of the leak
area. Move inside and search for the entry point with good lighting, some
towels and an air gun off of a compressor to thoroughly dry damp areas. You
will eventually detect a stream of water. Char it up hill to the entry
point and address. It could be coming from several areas to end up where
you are finding it. I think in order of likelihood it is
The side window behind the cockpit window
The cockpit window
The joint between the smc roof cap/sidewall/roof drip extrusion
You may find that your coach only leaks or leaks far worse when parked at a
certain list. For axample my coach will leak a bit onto the floor around
the entry door from water that comes in around the refrigerator external
access door but only when the coach is listing away from that side. When
level the water escapes back out the bottom of the coach and the interior
stays dry.
Sully
77 eleganza 2
Seattle
On Sun, Jan 22, 2017 at 9:48 AM Ronald Pottol
wrote:
> A coach I'm looking at buying has developed a leak since I saw it last
> summer (the coach is usually garaged, but was out in our recent rains to be
>
> shown). The leak is from the bottom forward curve of the window, down to
> the floor, in the area of the steps behind the drivers seat. Suggestions for
>
> good write ups on fixing this, and what I should plan on having on hand to
> do the work?
>
>
>
> http://www.gmcmhphotos.com/photos/data/7015/medium/IMG_20161222_155913.jpg
>
> --
>
> prospective owner in the San Francisco Bay Area
>
>
>
> _______________________________________________
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> GMCnet mailing list
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> Unsubscribe or Change List Options:
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Sully
77 Royale basket case.
Future motorhome land speed record holder(bucket list)
Seattle, Wa.
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| Re: water leak on wall behind drivers seat in a 1973 [message #312356 is a reply to message #312348] |
Sun, 22 January 2017 17:03 |
armandminnie
Messages: 864
Registered: May 2009
Location: Marana, AZ
Karma: 2
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Senior Member |
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I just fixed a leak that is right where Emery said - where the top corner of the windshield meets the top corner of the side window frame. It leaked right where your damage is. There was a small hole there that I found using a blower and some soapy water. I could not believe how much water was coming in that little hole. I tried to fix it once but left just a pin hole and even that leaked like it was a huge hole - capillary action in action.
Armand Minnie
Marana, AZ
'76 Eleganza II TZE166V103202
visit my gmc blog
click here to visit gmcws.org
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| Re: water leak on wall behind drivers seat in a 1973 [message #312359 is a reply to message #312348] |
Sun, 22 January 2017 18:10 |
Adrien G.
Messages: 474
Registered: May 2008
Location: Burns Flat, OK 73624
Karma: 1
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Senior Member |
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Ron.
In my case, the leak was coming from the rear of the side window.
The first attempt was to reseal the window, with no luck.
The second time I noticed some body cracks where the front SMC joins the body alum rib at top and bottom,
cut cracks open and epoxy resealed the cracks. That almost stopped it, still a little drip.
The drip was entering from 2 of the window rear mounting screw holes slots, in assembly the slots where made large that
the window lip and seal didn't fully cover them (but was not really visible on the outside).
After that filling in, no more leaks even in heavy rain.
Your situation may be a combination of all that has been talked about.
Wood will rot, but it can also be replaced.
Adrien & Jenny Genesoto
75 Glenbrook (26-3) Mods LS3.70 FD / Reaction Sys / 80mm Front&Intermidiate / Hydroboost / 16" Tires / Frame Rebuild / Interior Rebuild
Yuba City,Ca. Text 530-nine-3-three-3-nine-nine-6
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| Re: water leak on wall behind drivers seat in a 1973 [message #312387 is a reply to message #312348] |
Mon, 23 January 2017 01:52 |
Ken Burton
Messages: 10030
Registered: January 2004
Location: Hebron, Indiana
Karma: 10
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Senior Member |
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One other thing to easily check is the lower track that the slider run in. There are some slits in the aluminum frame for the window. These are drains for water that builds up in the track when it rains.
Make sure that those slots are open. If necessary put a hose with water running against the window and verify that you have the water draining. That lower track rubber seal is easily replaceable. Jim K should have them and Jim Bounds definitely has them.
Ken Burton - N9KB
76 Palm Beach
Hebron, Indiana
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| Re: water leak on wall behind drivers seat in a 1973 [message #312391 is a reply to message #312387] |
Mon, 23 January 2017 07:26 |
tphipps
Messages: 3005
Registered: August 2004
Location: Spanish Fort, AL
Karma: 9
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Senior Member |
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I had a seam leak from the rear side of the passenger sliding window frame. Used a marine grade caulk and filled the noticible gap between the window frame and windshields. Stopped that leak, plus the one along the windshield. I have noticed several coaches that have taken the same approach.
Tom, MS II
2012 Phoenix Cruiser model 2552
KA4CSG
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