| Leaky holding tank valve on my 73: Where to get a new one? [message #127213] |
Mon, 23 May 2011 21:12  |
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well as tit title says, who sells the Thetford valve which fits on our rigs? seems most use Valtera thee days....
its a bit embarrassing when someone pulls next to you and says "hey bro your leaking pee and it smells bad" (i guess he has smelled good smelling pee?) lol
PS not really interested in rebuilding the old one, just wanna remove and replace...
73 Canyon Lands, (a.k.a. The Yellow Submarine) West Los Angeles CA
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| Re: Leaky holding tank valve on my 73: Where to get a new one? [message #127217 is a reply to message #127213] |
Mon, 23 May 2011 21:20  |
GeorgeRud
Messages: 1380
Registered: February 2007
Location: Chicago, IL
Karma: 0
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I'm sure that JimK has them available. Like you, I found that most RV shops just have the Valterra valves these days.
Check to see what the white mounting ears look like on your tank when you're taking off the old valve. Mine were torn enough that I couldn't mount another Thetford and simply bolt it on like the original. I had to fabricate an adapter system to be able to use a Valterra valve - not a pleasant job to undertake.
George Rudawsky
Chicago, IL
75 Palm Beach
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| Re: Leaky holding tank valve on my 73: Where to get a new one? [message #127226 is a reply to message #127225] |
Mon, 23 May 2011 21:39 |
midlf
Messages: 2212
Registered: July 2007
Location: SE Wisc. (Palmyra)
Karma: 1
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Senior Member |
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| Duce Apocalypse wrote on Mon, 23 May 2011 21:34 |
I checked Jim Ks site but didnt see a valve just a remote valtra valve...
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Jim K has a lot of stuff not on his website. Ya gotta call if you don't see it. I got my thedford valve from him. JimB may also have them.
Steve Southworth
1974 Glacier TZE064V100150 (for workin on)
1975 Transmode TZE365V100394 (parts & spares)
Palmyra WI
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| Re: [GMCnet] Leaky holding tank valve on my 73: Where to get a new one? CORRECTION [message #127229 is a reply to message #127227] |
Mon, 23 May 2011 21:45 |
Dennis S
Messages: 3046
Registered: November 2005
Karma: 2
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Correction....
Should read
Shan,
My 73 is an early model and had only a flexible hose from the drain valve -- later 73's had an abs pipe -- anyway, I used Thetford valve 08709 -- bought it from Cinnabar.
http://www.gmcmhphotos.com/photos/showphoto.php?photo=34279&title=0084&cat=4620
I understand that JimK also has valves.
Dennis
-----Original Message-----
From: Dennis Sexton <dennisfsexton@aol.com>
To: gmclist@temp.gmcnet.org
Sent: Mon, May 23, 2011 9:43 pm
Subject: Re: [GMCnet] Leaky holding tank valve on my 73: Where to get a new one?
Duce Apocalypse wrote on Mon, 23 May 2011 21:12
well as tit title says, who sells the Thetford valve which fits on our rigs?
eems most use Valtera thee days....
its a bit embarrassing when someone pulls next to you and says "hey bro your
eaking pee and it smells bad" (i guess he has smelled good smelling pee?) lol
PS not really interested in rebuilding the old one, just wanna remove and
eplace...
han,
My 73 is an early model and had only a flexible hose from the drain valve --
ater 73's had an abs pipe -- anyway, I used Valterra valve 08709 -- bought it
rom Cinnabar.
http://www.gmcmhphotos.com/photos/showphoto.php?photo=34279&title=0084&cat=4620
I understand that JimK also has valves.
Dennis
-
ennis S
3 Painted Desert 230
ermantown, TN
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Dennis S
73 Painted Desert 230
Memphis TN Metro
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| Re: Leaky holding tank valve on my 73: Where to get a new one? [message #127265 is a reply to message #127213] |
Tue, 24 May 2011 07:27 |
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Matt Colie
Messages: 8547
Registered: March 2007
Location: S.E. Michigan
Karma: 7
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Senior Member |
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| Duce Apocalypse wrote on Mon, 23 May 2011 22:12 |
well as tit title says, who sells the Thetford valve which fits on our rigs? seems most use Valtera thee days....
its a bit embarrassing when someone pulls next to you and says "hey bro your leaking pee and it smells bad" (i guess he has smelled good smelling pee?) lol
PS not really interested in rebuilding the old one, just wanna remove and replace...
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Shan,
The valves used on '73 were stainless on the tank side, and those don't seem to be available at all. (JimK might just have them...) The only ones I was able to find were all plastic (later version). These are also about 1/4" thicker and the dump pipe will have to be adjusted to accommodate. Try JimK, JimB and Alex or others before you give up because that 1/4" also means you have to modify the transverse frame right behind the tank.
The outer side of the valve has a slip joint that the outlet pipe is glued into. The good part is that these glue joints can usually parted with a chisel and hammer - used carefully. I could not do this under the coach. I took the whole pipe down. Then cut out and replaced that first straight piece out of the valve. I could not find any ABS locally, so I used PVC.
The valve has four screws into the tank flange. If the coach was not winterized well, the threads can get pulled out of the plastic flange. With care, helicoils can be put in there - just don't drill too deeply!!.! This may be where your leak actually is.
Do Not use anything but stainless here. Some PO put steel in mine and the threads in the plastic were total loss.
In any case, you will have to plan to spend most of a day under the back of the coach. But the work is worth the effort.
Have a Good Time.
Matt
Matt & Mary Colie - Chaumière -'73 Glacier 23 - Members GMCMI, GMCGL, GMCES
Electronically Controlled Quiet Engine Cooling Fan with OE Rear Drum Brakes with Applied Control Arms
SE Michigan - Near DTW - Twixt A2 and Detroit
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| Re: [GMCnet] Leaky holding tank valve on my 73: Where to get a new one? [message #127292 is a reply to message #127286] |
Tue, 24 May 2011 11:20 |
James Hupy
Messages: 6806
Registered: May 2010
Karma: -62
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It has been my experience that black tanks, grey tanks, plastic valves &
plumbing are all made out of similar materials. When one becomes cracked and
brittle from age and exposure to sunlight, the others are not far behind it.
Unless you just take some perverse pleasure from laying under your GMC with
stuff dripping on your face, maybe the best course of action is to do it
once and do it right. Start at the tanks and replace it all and add a
mascerator while you are at it. Every one of these GMCs are different,
particularly the Transmodes that were sent to upfitters like Avion and
Coachman. The Jims and Duane Simmons can fix you up with replacements for
everything under there. It is for the most part all glue together plastic
materials that can be cut with ordinary hand tools. Not hard, just nasty.
Jim Hupy
Salem, OR
78 GMC Royale 403
On Tue, May 24, 2011 at 8:47 AM, Shan Rose <defconfx@gmail.com> wrote:
>
>
> Well I know its the valve leaking because the leak is out the bayonet at
> the end not the valve tank joint. Additionally I can't seat the latch fully
> so I know its only about 80% closed. A plastic valve sounds good as those
> can't rust at all so it might be worth making the change over? I noticed
> Valterra makes an easy fix gate valve which twists on the bayonet
> essentually making a gate at the hose fitting this might be the best short
> term fix :)
>
> At least I know there hasn't been solid waste in my tank since the PO
> because the valve on my electra magic also leaks all the charge water into
> the tank. So I just dry dock it when I gotta drop cargo. Still though I'm
> not interested in taking a bath in blue formaldehyde and pee lol...
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| Re: Leaky holding tank valve on my 73: Where to get a new one? [message #127297 is a reply to message #127286] |
Tue, 24 May 2011 11:30 |
Ken Burton
Messages: 10030
Registered: January 2004
Location: Hebron, Indiana
Karma: 10
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Senior Member |
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If you want to see a real leak you should have been at the Dayton hamfest last Saturday. As the hamfest drawing announcer said on Sunday " Saturday was suppose to be the Day of the Rapture, instead it was the Day of the Rupture". Another volunteer guarding the barricades told me said the he now understands what it meant to be "knee deep in pooh".
The main sewer line for the Hara Arena ruptured in the middle of the parking lot. The parking lot is where the flea market is set up. There are a little over 4200 spaces with about 2500 of them occupied. I did not see the actual break as I was inside one of the buildings at the time but I noticed that there was yellow tape across ALL of the doors going to all of the restrooms. When I did go outside they had an area of about 20 or 25 spots cordoned off and a large vacuum truck sucking up sewage. That area was occupied earlier but everything and every one had been moved by the time I got there.
I heard two different stories.
1. The sewer line broke and there was sewage shooting 6 to 8 feet high.
2. The sewer line broke underneath a van parked in his flea spot and his van and several other vehicles plus all of their merchandise got a bath.
I do not know which was true but the event was the highlight of the day there.
I was told that the health department tried to close down the Hamfest but people would not leave. They did manage to shut down most of the food vendors. By Sunday the rupture was fixed and a new patch of asphalt covered up the hole.
You guys were worried about a little leak in a holding tank. How much sewage do you think 15,000 to 20,000 people generate.
All is well in Dayton.
Ken Burton - N9KB
76 Palm Beach
Hebron, Indiana
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| Re: Leaky holding tank valve on my 73: Where to get a new one? [message #127317 is a reply to message #127213] |
Tue, 24 May 2011 13:10 |
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@James, if I could afford to do all that I would, but right not its the green stuff leaking up front, rather than the blue stuff out back. A new AL radiator is going to be my next big purchase, so I just need a quick fix for now.
@Ken, thas story sir is just positively gross! Swimming in poopie is just not my idea of a great weekend...
73 Canyon Lands, (a.k.a. The Yellow Submarine) West Los Angeles CA
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| Re: Leaky holding tank valve on my 73: Where to get a new one? [message #127379 is a reply to message #127317] |
Tue, 24 May 2011 22:52 |
Ken Burton
Messages: 10030
Registered: January 2004
Location: Hebron, Indiana
Karma: 10
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Senior Member |
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| Duce Apocalypse wrote on Tue, 24 May 2011 13:10 |
@James, if I could afford to do all that I would, but right not its the green stuff leaking up front, rather than the blue stuff out back. A new AL radiator is going to be my next big purchase, so I just need a quick fix for now.
@Ken, that story sir is just positively gross! Swimming in poopie is just not my idea of a great weekend...
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I'm just reporting what happened.
Ken Burton - N9KB
76 Palm Beach
Hebron, Indiana
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| Re: Leaky holding tank valve on my 73: Where to get a new one? [message #127386 is a reply to message #127380] |
Wed, 25 May 2011 01:33 |
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Hahaha I knew there was a reason I fit in here. My remark to Ken was a bit tounge in cheek since I can spin a yarn about poopie with the best of'em lol. I quite frequently gross my girlfriend out. Hehe I think its a guy thing...
I did get the leak stopped. I bought a Valterra bayo cap and universal adapter. I then went to home depot and got a pvc ball valve and some brass fittings and I now have a nice liquids only dump valve. Since I don't yet have a Mascerator I dry dock to get rid of poopie and it gives a second use for those plastic Tshirt bags from the store 
| WD0AFQ wrote on Tue, 24 May 2011 23:03 |
@Ken, that story sir is just positively gross! Swimming in poopie is just not my idea of a great weekend...
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I'm just reporting what happened. [/quote]
Yea, and he called me on the phone just to tell me about it. The final amen was being said when I felt the phone vibrating in my pocket. It was Ken with his repulsive story. Now that is a friend for ya.
Dan[/quote]
73 Canyon Lands, (a.k.a. The Yellow Submarine) West Los Angeles CA
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