|
08-17-2018, 12:50 PM
|
#1
|
Established Member
Join Date: Oct 2009
Location: Katy
Posts: 25
M.O.C. #9772
|
No tanks
The black tank on our 2007 3475RLS is leaking again. It has already been replaced twice at considerable expense. I was wondering why we even need a holding tank since we never stay at any campsite that does not have full hookups. After all, we don’t have a holding tank under our stick house so I was thinking I could simply remove the black tank and replace it with a p-trap beneath the toilet. An appropriately sized pipe would connect the trap to the discharge valve. When camping, we would leave the valve open and keep the p-trap filled with water.
I realize this is a totally absurd idea but so was paying $50K for this rig in the first place.
Would anyone care to tell me why my absurd idea won’t work?
|
|
|
08-17-2018, 01:05 PM
|
#2
|
Montana Master
Join Date: Oct 2015
Location: westminster md
Posts: 2,318
M.O.C. #17894
|
My guess is that you are letting the tank get too full. These tanks are known to fail from being over filled. But back to your idea, sounds doable. The only issue I can think of off the top of my head is that there would not be enough water pressure/volume to flush the solids down through the trap.
__________________
2018 Chevy 3500 LTZ Dually Diesel 4x4 CCLB
2011 Montana 3455 SA. 6 point level up. Disc brakes. Curt Q24 Hitch. 5 step glow steps
Progressive EMS. Valterra tank valves. Sailun G637 tires. ARP fridge control. All led lighting. Mor Ryde IS
|
|
|
08-17-2018, 02:04 PM
|
#3
|
Montana Master
Join Date: Oct 2006
Location: McKinney
Posts: 7,167
M.O.C. #6433
|
I think the only way that would work well would be to install a home style tank toilet to get adequate water flow to clear all solids thru out the length of the pipe. That type toilet has a built in p trap of sort. Then you would have to be sure to drain the toilet tank before travel to avoid water sloshing out.
__________________
Bill & Patricia
Riley, our Golden
2007 3075RL (recently sold, currently without)
|
|
|
08-17-2018, 10:25 PM
|
#4
|
Montana Master
Join Date: Jan 2016
Location: STAYTON
Posts: 1,118
M.O.C. #18157
|
Your toilet has a feature that serves the purpose of the p trap. Your toilet holds a little water as a barrier to gases, but I can see an issue in cold weather for the possibility of turd sickles.
Mark
__________________
“Hard times create strong men, strong men create good times, good times create weak men, and weak men create hard times.”
|
|
|
08-17-2018, 10:51 PM
|
#5
|
Montana Master
Join Date: Oct 2012
Location: Box Elder
Posts: 4,701
M.O.C. #12947
|
I think a bigger question is, why, after replacing tanks twice, didn’t someone add supports under those tanks to prevent future failures. I had a cracked gray tank a while back, and after repairing the crack, I added additional braces across under the tanks and installed blocking between the braces and tanks, and since then, even when full, the tanks don’t sag and I don’t worry about how full the tanks are.
__________________
Bob & Becky
2012 3402RL
2012 Chevy 2500HD D/A CC 4WD
|
|
|
08-18-2018, 04:50 AM
|
#6
|
Montana Master
Join Date: Oct 2017
Location: Bastrop
Posts: 2,892
M.O.C. #20753
|
Bob can you find the thread where you posted pix of your added supports? I was going to post it but cracked gray tank yields a ton of hits.
__________________
Mocha, one-eyed toothless, hurricane survivor, Pirate dog
2019 20th Anniversary Edition 3701LK
B&W 20K for Ford OEM Puck
2018 Ford F-350 Lariat CCLB PSD DRW KJ5CQH
|
|
|
08-18-2018, 05:02 AM
|
#7
|
Established Member
Join Date: Jul 2018
Location: Nebo
Posts: 21
M.O.C. #22321
|
We had the same problem last year with our Carriage black tank. The crack was at the top of the tank and so my husband took it out, cleaned it and took it to a body shop. They repaired it and when my husband put it back in, he added several additional braces and that fixed it.
|
|
|
08-18-2018, 07:15 AM
|
#8
|
Montana Master
Join Date: Feb 2012
Location: Lake Gaston
Posts: 8,773
M.O.C. #12156
|
Quote:
Originally Posted by BB_TX
I think the only way that would work well would be to install a home style tank toilet to get adequate water flow to clear all solids thru out the length of the pipe. That type toilet has a built in p trap of sort. Then you would have to be sure to drain the toilet tank before travel to avoid water sloshing out.
|
Exactly. Otherwise nasty backup.
__________________
Mike and Lorraine
2002 3655 FL, 2005 3650RK
2010 3665RE, 2015 3910FB
F350 crew cab dually 6.7
|
|
|
08-18-2018, 12:48 PM
|
#9
|
Montana Master
Join Date: Oct 2012
Location: Box Elder
Posts: 4,701
M.O.C. #12947
|
This is the thread with photos and description of the repair and addition of braces to support the gray and black tanks that I did:
http://www.montanaowners.com/forums/...78088#poststop
__________________
Bob & Becky
2012 3402RL
2012 Chevy 2500HD D/A CC 4WD
|
|
|
|
Posting Rules
|
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts
HTML code is Off
|
|
|
|
» Recent Threads |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|