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Who's #1 in the #2 business? [message #164901] Sun, 01 April 2012 13:50 Go to next message
Galen is currently offline  Galen   United States
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Registered: November 2011
Location: New Virginia, IA
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Senior Member
I'm getting ready to drop the waste tank. I've waited all winter since I got the Palm Beach last fall, to fill it up and test the pump, water lines, and waste. Wouldn't you know all the easy stuff works fine, but there's a nice slow drip coming out between the dump valve and the tank. Here's some pics: http://www.gmcmhphotos.com/photos/showphoto.php?photo=43581&title=waste-outlet&cat=all

It looks like it has a nice bead of door and window caulk all around it, and the caulking cracked, and that's where the leak is coming from. I can see the sending unit looks on the verge to crumble, too.

The good thing, is that this coach hasn't had fresh waste in it in a few years, so getting dreaded shower won't be a problem. I put a few gallons of fresh water in it to test.

I've read a couple threads on the valve and this problem before. I also have a macerator that came with the coach, along with a variety of hoses that looks like the PO was using the macerator with a twist lock adapter pump out tank through the normal dump line. That's a too "hands on" for me, Shocked , so I'll use this opportunity to do a dual outlet.

Any advice or lessons learned are welcome. Thanks.

Galen






Galen Briggs New Virginia, Iowa 1978 Palm Beach
Re: [GMCnet] Who's #1 in the #2 business? [message #164902 is a reply to message #164901] Sun, 01 April 2012 14:04 Go to previous messageGo to next message
James Hupy is currently offline  James Hupy   United States
Messages: 6806
Registered: May 2010
Karma: -62
Senior Member
Galen, Here is my take on waste tank repairs. It has been my experience
that the plastic tanks are ALL "aged out" and are brittle. There are some
adhesives that will make temporary repairs on them, but often times, they
will crack somewhere else, often when they are full of waste. That rapidly
becomes an unfunny situation to work on. If you have to drop the Black
tank, inspect the flange where the tank mounts to the floor. They are
usually cracked along that junction. Replacement tanks are available at
modest cost, and there are some improvements in plastics in the last 35
years or so since yours were made. There are many variations due to year
models and who upfitted the coach. If you have a Royale, they were upfitted
by Coachman Industries and are the most different styles that one can
imagine. I have worked on several different ones, and am presently working
on one that will require full replacement from the toilet to the waste dump
hose. In my experience, when a new tank is fitted, new waste valves and
drain plumbing is not a bad idea, particularly when a mascerator is fitted.
I prefer to retain both the 3" dump along with the mascerator dump, but I
am a belt and suspenders kind of guy. Your experience may vary.
Jim Hupy
Salem, OR
78 GMC Royale 403

On Sun, Apr 1, 2012 at 11:50 AM, Galen Briggs <gpbriggs@iowatelecom.net>wrote:

>
>
> I'm getting ready to drop the waste tank. I've waited all winter since I
> got the Palm Beach last fall, to fill it up and test the pump, water lines,
> and waste. Wouldn't you know all the easy stuff works fine, but there's a
> nice slow drip coming out between the dump valve and the tank. Here's some
> pics:
> http://www.gmcmhphotos.com/photos/showphoto.php?photo=43581&title=waste-outlet&cat=all
>
> It looks like it has a nice bead of door and window caulk all around it,
> and the caulking cracked, and that's where the leak is coming from. I can
> see the sending unit looks on the verge to crumble, too.
>
> The good thing, is that this coach hasn't had fresh waste in it in a few
> years, so getting dreaded shower won't be a problem. I put a few gallons of
> fresh water in it to test.
>
> I've read a couple threads on the valve and this problem before. I also
> have a macerator that came with the coach, along with a variety of hoses
> that looks like the PO was using the macerator with a twist lock adapter
> pump out tank through the normal dump line. That's a too "hands on" for me,
> 8o , so I'll use this opportunity to do a dual outlet.
>
> Any advice or lessons learned are welcome. Thanks.
>
> Galen
>
>
>
>
>
> --
> Galen Briggs
> New Virginia, Iowa
> 1978 Palm Beach
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
>
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Re: Who's #1 in the #2 business? [message #164904 is a reply to message #164901] Sun, 01 April 2012 14:24 Go to previous messageGo to next message
Dennis S is currently offline  Dennis S   United States
Messages: 3046
Registered: November 2005
Karma: 2
Senior Member
Galen

You probably know to remove the toilet and disconnect the shower and sink inlets.. The toilet inlet on mine screwed into the black tank -- I made this tool to make it a little easier.

http://www.gmcmhphotos.com/photos/showphoto.php?photo=37671&title=0067&cat=5690

Use an 18 or so inch of plywood with a floor Jack to lower and raise the tank.
It's not heavy but awkward.

A photo of my tank -- there are a few others in the same album.

http://www.gmcmhphotos.com/photos/showphoto.php?photo=31250&title=black-tank-inlets-2c-73&cat=4620

Here is how I did the macerator

http://www.gmcmhphotos.com/photos/showgallery.php?cat=5767

Good luck,
Dennis





Galen wrote on Sun, 01 April 2012 13:50

I'm getting ready to drop the waste tank. I've waited all winter since I got the Palm Beach last fall, to fill it up and test the pump, water lines, and waste. Wouldn't you know all the easy stuff works fine, but there's a nice slow drip coming out between the dump valve and the tank. Here's some pics: http://www.gmcmhphotos.com/photos/showphoto.php?photo=43581&title=waste-outlet&cat=all

It looks like it has a nice bead of door and window caulk all around it, and the caulking cracked, and that's where the leak is coming from. I can see the sending unit looks on the verge to crumble, too.

The good thing, is that this coach hasn't had fresh waste in it in a few years, so getting dreaded shower won't be a problem. I put a few gallons of fresh water in it to test.

I've read a couple threads on the valve and this problem before. I also have a macerator that came with the coach, along with a variety of hoses that looks like the PO was using the macerator with a twist lock adapter pump out tank through the normal dump line. That's a too "hands on" for me, Shocked , so I'll use this opportunity to do a dual outlet.

Any advice or lessons learned are welcome. Thanks.

Galen








Dennis S
73 Painted Desert 230
Memphis TN Metro
Re: [GMCnet] Who's #1 in the #2 business? [message #164906 is a reply to message #164902] Sun, 01 April 2012 14:26 Go to previous messageGo to next message
WD0AFQ is currently offline  WD0AFQ   United States
Messages: 7111
Registered: November 2004
Location: Dexter, Mo.
Karma: 207
Senior Member
I am with Jim on this. Fix it once and be done with it. A new one is not that expensive. We always have one at the conventions so folks can see how the new ones are made and to save someone shipping.
Dan


3 In Stainless Exhaust Headers One Ton All Discs/Reaction Arm 355 FD/Quad Bag/Alum Radiator Manny Tran/New eng. Holley EFI/10 Tire Air Monitoring System Solarized Coach/Upgraded Windows Satelite TV/On Demand Hot Water/3Way Refer
Re: [GMCnet] Who's #1 in the #2 business? [message #164908 is a reply to message #164906] Sun, 01 April 2012 14:39 Go to previous messageGo to next message
Sammy Williams is currently offline  Sammy Williams   United States
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Registered: August 2010
Karma: -2
Senior Member
Does Jim or other GMC vendors have replacement black/grey water tanks?

S. Williams

(Hey with me getting one, I'll probably be doing this myself...)
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Re: Who's #1 in the #2 business? [message #164909 is a reply to message #164901] Sun, 01 April 2012 14:44 Go to previous messageGo to next message
Dennis S is currently offline  Dennis S   United States
Messages: 3046
Registered: November 2005
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Senior Member
Galen,

I forgot to mention -- plan to use vise grips to hold the four rod hangers for the tank support brackets while you loosen the nuts.

Dennis


Galen wrote on Sun, 01 April 2012 13:50

I'm getting ready to drop the waste tank. I've waited all winter since I got the Palm Beach last fall, to fill it up and test the pump, water lines, and waste. Wouldn't you know all the easy stuff works fine, but there's a nice slow drip coming out between the dump valve and the tank. Here's some pics: http://www.gmcmhphotos.com/photos/showphoto.php?photo=43581&title=waste-outlet&cat=all

It looks like it has a nice bead of door and window caulk all around it, and the caulking cracked, and that's where the leak is coming from. I can see the sending unit looks on the verge to crumble, too.

The good thing, is that this coach hasn't had fresh waste in it in a few years, so getting dreaded shower won't be a problem. I put a few gallons of fresh water in it to test.

I've read a couple threads on the valve and this problem before. I also have a macerator that came with the coach, along with a variety of hoses that looks like the PO was using the macerator with a twist lock adapter pump out tank through the normal dump line. That's a too "hands on" for me, Shocked , so I'll use this opportunity to do a dual outlet.

Any advice or lessons learned are welcome. Thanks.

Galen








Dennis S
73 Painted Desert 230
Memphis TN Metro

[Updated on: Sun, 01 April 2012 14:44]

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Re: [GMCnet] Who's #1 in the #2 business? [message #164910 is a reply to message #164901] Sun, 01 April 2012 14:41 Go to previous messageGo to next message
Mr ERFisher is currently offline  Mr ERFisher   United States
Messages: 7117
Registered: August 2005
Karma: 2
Senior Member
here is some light reading
http://gmcmotorhome.info/list.html#macerator

good luck
gene







On Sun, Apr 1, 2012 at 11:50 AM, Galen Briggs <gpbriggs@iowatelecom.net>wrote:

>
>
> I'm getting ready to drop the waste tank. I've waited all winter since I
> got the Palm Beach last fall, to fill it up and test the pump, water lines,
> and waste. Wouldn't you know all the easy stuff works fine, but there's a
> nice slow drip coming out between the dump valve and the tank. Here's some
> pics:
> http://www.gmcmhphotos.com/photos/showphoto.php?photo=43581&title=waste-outlet&cat=all
>
> It looks like it has a nice bead of door and window caulk all around it,
> and the caulking cracked, and that's where the leak is coming from. I can
> see the sending unit looks on the verge to crumble, too.
>
> The good thing, is that this coach hasn't had fresh waste in it in a few
> years, so getting dreaded shower won't be a problem. I put a few gallons of
> fresh water in it to test.
>
> I've read a couple threads on the valve and this problem before. I also
> have a macerator that came with the coach, along with a variety of hoses
> that looks like the PO was using the macerator with a twist lock adapter
> pump out tank through the normal dump line. That's a too "hands on" for me,
> 8o , so I'll use this opportunity to do a dual outlet.
>
> Any advice or lessons learned are welcome. Thanks.
>
> Galen
>
>
>
>
>
> --
> Galen Briggs
> New Virginia, Iowa
> 1978 Palm Beach
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
>



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Re: [GMCnet] Who's #1 in the #2 business? [message #164914 is a reply to message #164908] Sun, 01 April 2012 16:17 Go to previous messageGo to next message
WD0AFQ is currently offline  WD0AFQ   United States
Messages: 7111
Registered: November 2004
Location: Dexter, Mo.
Karma: 207
Senior Member
Sammy Williams wrote on Sun, 01 April 2012 14:39

Does Jim or other GMC vendors have replacement black/grey water tanks?

S. Williams

(Hey with me getting one, I'll probably be doing this myself...)
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Yes they do. Well worth the price, is my opinion.
Dan


3 In Stainless Exhaust Headers One Ton All Discs/Reaction Arm 355 FD/Quad Bag/Alum Radiator Manny Tran/New eng. Holley EFI/10 Tire Air Monitoring System Solarized Coach/Upgraded Windows Satelite TV/On Demand Hot Water/3Way Refer
Re: Who's #1 in the #2 business? [message #164926 is a reply to message #164901] Sun, 01 April 2012 18:38 Go to previous message
Chr$ is currently offline  Chr$   United States
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