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Chasing Leaks [message #315154]

Mon, 27 March 2017 23:35

bryhart

Messages: 90
Registered: July 2015
Location: Salem, OR

Karma: 0

Member

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://i148.photobucket.com/albums/s3/bryhart/GMC%20-%20Conroe%20TX%201977%20Palm%20Beach/86862c9d-457d-4a77-afbd-1b9325172829.jpg

Passenger -

http://i148.photobucket.com/albums/s3/bryhart/GMC%20-%20Conroe%20TX%201977%20Palm%20Beach/b2adcc27-b65e-44ce-ac12-2cc4ed8bad4f.jpg

Windshield -

http://i148.photobucket.com/albums/s3/bryhart/GMC%20-%20Conroe%20TX%201977%20Palm%20Beach/611f7288-3b38-4611-b5be-d87d8f5738bb.jpg

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

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Re: Chasing Leaks [message #315155 is a reply to message #315154]

Tue, 28 March 2017 07:47

Tilerpep

Messages: 404
Registered: June 2013
Location: Raleigh, NC

Karma: 7

Senior Member

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#msg_302471

1975 Glenbrook, 1978 Royale rear bath Raleigh, NC

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Re: [GMCnet] Chasing Leaks [message #315158 is a reply to message #315155]

Tue, 28 March 2017 09:20

Keith V

Messages: 2337
Registered: March 2008
Location: Mounds View,MN

Karma: 0

Senior Member

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@list.gmcnet.org
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#msg_302471

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

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Keith Vasilakes
Mounds View. MN
75 ex Royale GMC
ask me about MicroLevel
Cell, 763-732-3419
My427v8@hotmail.com

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Re: Chasing Leaks [message #315163 is a reply to message #315155]

Tue, 28 March 2017 12:22

bryhart

Messages: 90
Registered: July 2015
Location: Salem, OR

Karma: 0

Member

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

Tilerpep wrote on Tue, 28 March 2017 05:47

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#msg_302471

1977 Palm Beach

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Re: Chasing Leaks [message #315167 is a reply to message #315163]

Tue, 28 March 2017 15:57

tphipps

Messages: 3005
Registered: August 2004
Location: Spanish Fort, AL

Karma: 9

Senior Member

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

2012 Phoenix Cruiser model 2552 KA4CSG

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