Chasing Leaks

[bryan hartman]

So I have tracked down the leaks in the front. 3 of 5 running lights were leaking but those should be fairly straight-forward. The last 3 leaks I need
help with:

Driver -
http://s148.photobucket.com/user/bryhart/media/GMC%20-%20Conroe%20TX%201977%20Palm%20Beach/86862c9d-457d-4a77-afbd-1b9325172829.jpg.html

Passenger -
http://s148.photobucket.com/user/bryhart/media/GMC%20-%20Conroe%20TX%201977%20Palm%20Beach/b2adcc27-b65e-44ce-ac12-2cc4ed8bad4f.jpg.html

Windshield -
http://s148.photobucket.com/user/bryhart/media/GMC%20-%20Conroe%20TX%201977%20Palm%20Beach/611f7288-3b38-4611-b5be-d87d8f5738bb.jpg.html

I assume the 2 on the side can be dealt with by sealing the joint on the roof where the cap meets the body. What is the best way to do this?

The one on the windshield needs more investigation on my part. I haven't looked from the outside yet to see if I can tell where the source might be.
Maybe someone on here has dealt with this leak before?
--
1977 Palm Beach

 

[tyler]

You clearly have an advantage to be tracking the leaks with the interior cleared out.

Jim Bounds just did a video on this in the last few days called who will stop the rain

https://www.patreon.com/user?u=4565838

Or go to http://www.gmccoop.com/blog/ and there is a link to the video page on upper right

One key thing is what to use - has to have the right blend of adhesion and sealing.

And an old thread with options here:

http://gmc.mybirdfeeder.net/GMCforum/index.php?t=msg&goto=302471&rid=3615&srch=sikaflex+40

--
1975 Glenbrook, 1978 Royale rear bath
Raleigh, NC

 

[Keith V]

any tiny crack will suck water in. I had a cracked fan base that would suck in water like a fire hose. It's amazing.

________________________________
From: Gmclist on behalf of Tyler
Sent: Tuesday, March 28, 2017 7:47:30 AM
To: gmclist
Subject: Re: [GMCnet] Chasing Leaks

You clearly have an advantage to be tracking the leaks with the interior cleared out.

Jim Bounds just did a video on this in the last few days called who will stop the rain

https://www.patreon.com/user?u=4565838

Or go to http://www.gmccoop.com/blog/ and there is a link to the video page on upper right

One key thing is what to use - has to have the right blend of adhesion and sealing.

And an old thread with options here:

http://gmc.mybirdfeeder.net/GMCforum/index.php?t=msg&goto=302471&rid=3615&srch=sikaflex+40

--
1975 Glenbrook, 1978 Royale rear bath
Raleigh, NC

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[bryan hartman]

Thank you. That video series was great. Really informative.

> You clearly have an advantage to be tracking the leaks with the interior cleared out.
>
> Jim Bounds just did a video on this in the last few days called who will stop the rain
>
> https://www.patreon.com/user?u=4565838
>
> Or go to http://www.gmccoop.com/blog/ and there is a link to the video page on upper right
>
> One key thing is what to use - has to have the right blend of adhesion and sealing.
>
> And an old thread with options here:
>
> http://gmc.mybirdfeeder.net/GMCforum/index.php?t=msg&goto=302471&rid=3615&srch=sikaflex+40

--
1977 Palm Beach

 

[thomas phipps]

Tape the cap seam with Eternabond tape. 4" wide and flexible. Also paintable if you do not want white. Clean surface before applying the tape and
follow the rub down instructions. Some Wal-Marts have it and Camping World, as well as web sources.
Check the gasket surrounding the windshield. Clean out the old 'whatever' that has been applied to the windshield gasket and re-caulk with a poly
caulk. I used a product from West Marine that stays semi-flexible. Need to run both the sides and top of the windshield where it joins the body.
Tom, MS II
--
1975 GMC Avion
KA4CSG