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| Re: [GMCnet] Repairing polyethylene [message #92681 is a reply to message #92678] |
Tue, 20 July 2010 11:59   |
Dennis S
Messages: 3046
Registered: November 2005
Karma: 2
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The black tank in my early 73 coach is polyethylene -- I took it to a local industrial tank fabrication business for repair, told them it was polypro, which is what it says in the manual -- and when they reparied it the welder told me "No, it is polyethylene".
Photo of repairs..
http://www.gmcmhphotos.com/photos/showphoto.php?photo=31395&title=0053&cat=4620
Dennis Sexton
73 GMC
Germantown, TN
USA
-----Original Message-----
From: Emery Stora <emerystora@mac.com>
To: gmclist@temp.gmcnet.org
Sent: Tue, Jul 20, 2010 11:48 am
Subject: Re: [GMCnet] Repairing polyethylene
n Jul 20, 2010, at 10:31 AM, Kirk Yeager wrote:
> I think our holding tanks are polyethylene; here's a video I ran across on
how to repair polyethylene. It mentions that the material has to be
"flamed" before repair. <http://www.tripphop.com/videos/tripp19b.wmv>
Kirk
f its an original tank its polypropylene. The fresh water tank is
olyethylene.
ou cannot repair polypropylene tanks with polyethylene materials.
If you have the Maintenance Manual X7525 check out page 24L-3.
Emery Stora
7 Kingsley
anta Fe, NM
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Dennis S
73 Painted Desert 230
Memphis TN Metro
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| Re: [GMCnet] Repairing polyethylene [message #92683 is a reply to message #92681] |
Tue, 20 July 2010 12:17 |
emerystora
Messages: 4442
Registered: January 2004
Karma: 13
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Senior Member |
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On Jul 20, 2010, at 10:59 AM, dennisfsexton@aol.com wrote:
>
> The black tank in my early 73 coach is polyethylene -- I took it to a local industrial tank fabrication business for repair, told them it was polypro, which is what it says in the manual -- and when they reparied it the welder told me "No, it is polyethylene".
> Photo of repairs..
>
> http://www.gmcmhphotos.com/photos/showphoto.php?photo=31395&title=0053&cat=4620
>
>
> Dennis Sexton
> 73 GMC
> Germantown, TN
> USA
>
That may well be. GM did some other things with early models. The Maintenance Manual that I refered to in a 1975/76 manual. By then GM was definitely using Polypropylene tanks.
Looking up Kirk Yeagers motorhome I see that he has a 1977 Royale. Since this was manufactured by GM as a Transmode when it left the factory it didn't have any holding tank. Coachmen Industries that outfitted the Royales use a variety of products to finish the Transmodes as motorhomes. They might have used a polyethylene tank.
That is why when people ask for information they should include the model of their motorhome so it is not just assumed that they have what GM installed into the motorhomes. For example you sign with 73 GMC. You should consider including your model in that signature line. Although with a 1973 it really doesn't matter since GM didn't build Transmodes until starting with the 1975 model year. It might be useful though to state whether you have a 26' or a 23'.
Emery Stora
77 Kingsley
Santa Fe, NM
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