Foretravel Owners' Forum

Foretravel Motorhome Forums => Foretravel Tech Talk => Topic started by: Moby on April 16, 2020, 10:30:21 pm

Title: Clogged black tank
Post by: Moby on April 16, 2020, 10:30:21 pm
I'm trying to help an older camper in my park having GV problems.
It's an 87, i cant identify the model. On a GM Chassis (so title says), tag axle. 36'. Power in on outside wall, far driver's side. Water inlet drivers side. 2/3 way down.
Vented battery compartment passenger side far back. "Wet bay" VERY small compared to mine, almost all the way to the rear with only two dump valves in the bay along with the heater.  Dump valves have no ID.

Owner left both dumps open, for months and toilet goes down VERY slow.  I'm assuming she has a poo pyramid.
I cant locate a black flush connection anyplace.  I hooked up a elbow with garden hose connection to dump line to try to back flush while elevating the sewer line above apparent tank level in an attempt to back flush with no love.
 Thinking of trying one of those black tank cleaning wands but would love to use the tank flush connection.
Where/how would I I flush the black tank on this old of a unit?  Owner is older and knows almost nothing about it.
 Hell, it's hard to positively ID the black tank on this.
 She's a sweet older lady and the Boy Scout in me wants to help.
 Suggestions?
Only have the one picture.
Can take more in daylight on request.
Title: Re: Clogged black tank
Post by: bbeane on April 16, 2020, 10:50:24 pm
Might try closing both valves hen the old hose through the window and a spray nozzle work from the top down. Run some water 5 gallon or so the open the valves one at time shouldn't be too hard to figure which one is gray.
Title: Re: Clogged black tank
Post by: Moby on April 16, 2020, 10:55:08 pm
Thanks for your suggestion, bbeane.
That way I'll know grey from black.
Title: Re: Clogged black tank
Post by: Dakota Slim on April 16, 2020, 11:00:41 pm
Is the coach road worthy? If so, fill the tank and have her take it for a 1/2 hour ride, then dump and see what happens.
Title: Re: Clogged black tank
Post by: Moby on April 16, 2020, 11:17:26 pm
Is the coach road worthy? If so, fill the tank and have her take it for a 1/2 hour ride, then dump and see what happens.

I think at this point, what we have is a park model.
I gave her some tank cleaner pods (2).  Told her to flush them along with some dish or laundry soap. And we'll try in the AM.
Also told her to get one of those thank cleaner wands from Wally World.
Wish I could find the black tank flush connection....
Title: Re: Clogged black tank
Post by: Protech Racing on April 16, 2020, 11:24:10 pm
 Close the blades.
Fabric softener.
Boil the largest water pot you have. Dump it in the toilet, followed by the shower head o.n full hot  .  Add another 10 gal of water .
 Open the  valve.

If that won't open it  You may have to blow water or air into the exhaust.
Title: Re: Clogged black tank
Post by: DavidS on April 16, 2020, 11:33:38 pm
Look up Geo method for black tank. after adding everything go for a scenic drive for a couple hours.. Then try

Dawn dish soap, Calgon, also have read ice to break up the solid stuff
Title: Re: Clogged black tank
Post by: juicesqueezer on April 16, 2020, 11:46:44 pm
I commend you for tackling this dirty  job!  Hey, you might want to contact Mike Roe of Dirty Jobs fame!  He could make a segment out of this with him doing all the dirty work!  An Idea for sure!
Title: Re: Clogged black tank
Post by: Olde English on April 16, 2020, 11:50:25 pm
I put a bag of ice in the black tank after dumping before leaving the CG, never had a pyramid, the ice will bang around and knock down build up then it melts away.
Title: Re: Clogged black tank
Post by: Moby on April 16, 2020, 11:59:08 pm
Pls. dont forget this unit is not moving. (Not mine and I dont feel comfortable taking responsibility.)
Hot water trick sounds interesting.
Is there a tank flush connection on this model?
Title: Re: Clogged black tank
Post by: dsd on April 17, 2020, 12:20:53 am
We use 10% vinegar in our vacuum toilets at work. We put several gallons in vacuum line and a gallon in the toilet and leave in place overnight. Engineers say it helps clean and remove deposits. Agitation and dilution seems to be required in her situation. Yes it's dirty job. No good deed goes unpunished. Good karma thou. Good luck.
Scott
Title: Re: Clogged black tank
Post by: bbeane on April 17, 2020, 12:31:45 am
It sounds like this is a stationary unit. Just to clarify, hold the foot pedal down on the toilet and use a flashlight to see what's going on. Holding the foot pedal down use the spray nozzle on the hose to loosen things up. With that said if the clog is in the piping It's likely to get messy working from the bottom up.
Title: Re: Clogged black tank
Post by: Moby on April 17, 2020, 12:43:05 am
It sounds like this is a stationary unit. Just to clarify, hold the foot pedal down on the toilet and use a flashlight to see what's going on. Holding the foot pedal down use the spray nozzle on the hose to loosen things up. With that said if the clog is in the piping It's likely to get messy working from the bottom up.

 Did this already......
With the flush valve open, I saw water a few inches down the drain pipe.  The flush water started filling the drain up then into the toilet.
Will try spray nozzle tomorrow.
Title: Re: Clogged black tank
Post by: Caflashbob on April 17, 2020, 01:11:14 am
May require dawn dishwashing in the tank and a drive. 
Title: Re: Clogged black tank
Post by: Moby on April 17, 2020, 02:11:25 am
May require dawn dishwashing in the tank and a drive. 

 Provided friend with some dawn and two pods of tank cleaner this evening with instructions.
 I am not taking responsibility for driving the rig and the owner is afraid to drive it.
Title: Re: Clogged black tank
Post by: fouroureye on April 17, 2020, 05:20:08 am
Broom Handel down the toilet, stir...
Title: Re: Clogged black tank
Post by: ohsonew on April 17, 2020, 06:55:31 am
I had a plug in mine shortly after getting the coach. I got a 6' length of 1/2" PVC to act as a dislodging device. It was flexible enough to go thru toilet and the elbow under it to remove the culprit. Threw the PVC away and bought another which I carry just in case.

Larry
Title: Re: Clogged black tank
Post by: Pamela & Mike on April 17, 2020, 07:28:28 am
Is there a tank flush connection on this model?

Not from the factory.

Mike
Title: Re: Clogged black tank
Post by: Hawkeye on April 17, 2020, 08:15:33 am
And NEVER leave the black tank valve open again.
There is no flush connection on that model.
Broom handle, Dawn, maybe a jackhammer.
Title: Re: Clogged black tank
Post by: nitehawk on April 17, 2020, 08:41:53 am
If you can see/access the side of the black tank, go to an RV dealer and buy the flush spinner kit. It will have an instruction sheet telling how to mount it and use it.
Anybody ever think of using some Drano and letting it set o'nite? The materials of the holding system aren't any different than our sticks 'n bricks systems.
Does the commode sit directly above the black tank? I made a "flush wand" out of pvc pipe, an end cap, and a female hose coupling. I used long enough pvc pipe that I didn't have to bend over the commode and risk a backsplash in the face. I drilled one (1) 1/4" diameter hole at 45 degrees thru the pvc pipe right above the glued on end cap. I also included a hose shutoff on the other end so I could turn the water on and off. Turn the water on at the tap, then when you have pushed the pvc wand down into the pile--turn it on and "mix" the pile with the wand and pressured water.
Title: Re: Clogged black tank
Post by: Old Toolmaker on April 17, 2020, 09:16:59 am
I'm trying to help an older camper in my park having GV problems.

Owner left both dumps open, for months and toilet goes down VERY slow.
 
 She's a sweet older lady and the Boy Scout in me wants to help.
 Suggestions?
Only have the one picture.
Can take more in daylight on request.

Check the stinky slinky for patency, "stuff" may have settled partially clogging the line.

When all is said and done, teach her how to dump the tanks.  The closest we've ever come to a poo pyramid was a poo iceberg.

If that GV has become a park model, she could have a plumber install a household toilet and hard plumb the drains.
Title: Re: Clogged black tank
Post by: dans96u295ft on April 17, 2020, 09:35:40 am
Yep. A stiff piece of hose 4-5 foot long and go to town thru the toilet. Just keep working it. My Bounder had a 90 before the tank and this would clear it. If yours is straight down, Use a metal coat hanger to cut up the poo
Title: Re: Clogged black tank
Post by: Jack Lewis on April 17, 2020, 09:46:42 am
I suggested to a lady last summer with a similar issue trying three days of Happy Camper "Extreme" with almost full tank for three days and she had success. The park's office store sold the product.

Currently out of stock, maybe available locally:
Amazon.com: EXTREME CLEANER by Happy Campers - RV & Marine Extreme Tank &... (https://www.amazon.com/EXTREME-CLEANER-Happy-Campers-Extreme/dp/B00DKDFVVC)

At bottom of this link is locator link by zip code.
Extreme Cleaner RV & Marine Extreme Tank & Sensor Cleaner - HAPPY CAMPERS RV... (https://www.happycampersworld.com/product/happy-campers-extreme-cleaner/)

Good info on using their product.
Tips For Tanks | HAPPY CAMPERS RV (https://www.happycampersworld.com/tips-tanks/)

Why I strongly recommend their products.
1) I've used for over 10 years and could tell many positive stories of it's use.
2) Once my dog (10lb Yorki) got in where it was stored, and ate we estimate a couple ounces of it. Bye the time we got his face away from it his face was all white with the powder. I panicked, it was Sunday night about 7PM.  I found the companies phone number, called, a man answered the phone, he assured me all would be ok.  I asked what his position with the company was.  He said "I am the founder and owner, It may take me 10 minutes, but I'll find and email you the original toxicology study and report we had to do to start selling this product."  This was for their regular product, not the "Extreme" product.
Title: Re: Clogged black tank
Post by: bbeane on April 17, 2020, 10:49:26 am
As I said could get ugly.
Title: Re: Clogged black tank
Post by: nitehawk on April 17, 2020, 10:57:10 am
Face mask, face shield, nose plugs smeared with Vicks, rubber gloves, hip boots, Shower wash station standing by.
Maybe even Government Toxic waste spill cleanup team on site? :))
Title: Re: Clogged black tank
Post by: Protech Racing on April 17, 2020, 10:58:00 am
 If you can get the coach up on the air bags without the jacks, you can rock it like a boat with a couple of people .
Title: Re: Clogged black tank
Post by: nitehawk on April 17, 2020, 11:02:26 am
Won't work. Try watching some of the Utube videos where a guy exposed the fallacy that driving around to slosh the ice around in a tank to clean it. Not enough violence to cause necessary cleaning.
Title: Re: Clogged black tank
Post by: Caflashbob on April 17, 2020, 11:08:47 am
Dawn and a hundred miles was noted to work
Title: Re: Clogged black tank
Post by: nitehawk on April 17, 2020, 11:18:50 am
HEY!! If the bottom of the tank is exposed, why not use some "percussion persuasion"? Thump it with a rubber mallet. That should get the"stuff" loose from the tank bottom.
We have one of those vibratory massage wands and this would possibly induce enough vibration to the tank bottom to agitate the pile base.
Title: Re: Clogged black tank
Post by: Gary Bouland (RIP) on April 17, 2020, 11:22:14 am
PLEASE,  NO Drano.  Its too easy to spill or get on you. Next person working on it may find that it is in the system by ACCIDENT.
A piece of PVC pipe, dawn soap and elbow grease thru the toilet will work but it takes time and patience.
Gary B
Title: Re: Clogged black tank
Post by: DavidS on April 17, 2020, 11:33:15 am
Pls. dont forget this unit is not moving. (Not mine and I dont feel comfortable taking responsibility.)
Hot water trick sounds interesting.
Is there a tank flush connection on this model?
Second I dea if the coach is stationary but this will depend on age and stamina..



Sex :))  :))  Rock it till it shakes the ornaments off the walls. But again its an age thing.. Maybe get one of those riding bulls and set it up in the living room and have the neighbors over so everyone can get a ride and if that doesnt work
May I suggest one of the horses with the handles on the ears that has the springs on it and let the camp give it a try..Might need replacement springs for those of the larger build..

Ok I got Nothing Else to Add!  :))
Title: Re: Clogged black tank
Post by: John Haygarth on April 17, 2020, 11:48:49 am
Pour hot water out of a kettle into tank while holding valve open, after pouring some Dawn down first.  Wait for 10 minutes then get the garden hose into tank and direct a jet of water to bottom, again while holding valve open.
Once clear put some more Dawn in with some water and leave it in tank.
I did just this a bunch of years ago and it worked .
JohnH
Title: Re: Clogged black tank
Post by: nitehawk on April 17, 2020, 11:50:42 am
How about getting a couple of metabolically challenged (politically correct terminology here) people to run back and forth and jump up and down in the RV? >:D  :)) Might be too strenuous for them tho.
Title: Re: Clogged black tank
Post by: dans96u295ft on April 17, 2020, 12:07:34 pm
Hazmat needs to supervise
Title: Re: Clogged black tank
Post by: Travelin' Man (RIP) on April 17, 2020, 12:15:50 pm
Black Water Tank Buildup AND Removal
Black Water Tank Buildup AND Removal (https://www.foreforums.com/index.php?topic=28072.msg232040#msg232040)
Title: Re: Clogged black tank
Post by: John Duld on April 17, 2020, 01:13:10 pm
When moving to the next campground if I would have a full hookup I always traveled with around 1/8 to 1/4 black tank quantity.
Dumped as soon as I hooked up there.
Never had any black tank issues.
Title: Re: Clogged black tank
Post by: Moby on April 17, 2020, 01:30:57 pm
She got the magic wand.

COVER ME BOYS, I'M GOING IN!
Title: Re: Clogged black tank
Post by: DavidS on April 17, 2020, 02:43:22 pm
Maybe a shop vac exhaust pressure into the toilet hole.. Just suggesting.. watch the pressure

Plumbers snake?
Title: Re: Clogged black tank
Post by: MAZ on April 17, 2020, 02:50:53 pm
I wonder if one of these tools would liquefy things ?

https://www.harborfreight.com/3-4-quarter-hp-concrete-vibrator-34923.html?cid=paid_bing|*PLA%20-%20All%20Products%20-%20Higher%20Sales%20Items|New%20Products%20-%20(5)%20Price%20%2470-100|pla-4576648434760266&utm_source=bing&utm_medium=cpc&utm_campaign=*PLA%20-%20All%20Products%20-%20Higher%20Sales%20Items&utm_content=New%20Products%20-%20(5)%20Price%20%2470-100&msclkid=69ee731c714716fad1f92d858b58c6a7

Mark
Title: Re: Clogged black tank
Post by: Moby on April 17, 2020, 03:10:16 pm
UPDATE

 Got the tank/plumbing clear and flowing.
Used Camco water wand thing from Walmart to clear it out to flowing.  Used more muscle than I expected but its working.
 Currently filling black tank and dumping multiple times.

 It's a crappy job, but some one had to do it
Title: Re: Clogged black tank
Post by: Dakota Slim on April 17, 2020, 05:30:56 pm
This is one good reason to only dump when the tank is full, rather than leaving the dump valve open all the time when hooked up to sewer. This also helps prevent sewer flies.
Title: Re: Clogged black tank
Post by: Moby on April 17, 2020, 05:45:53 pm
This is one good reason to only dump when the tank is full, rather than leaving the dump valve open all the time when hooked up to sewer. This also helps prevent sewer flies.

 We had a talk about proper tank maintenance.
Dump only as needed, use a bit more water when clearing the bowl, add a bit of detergent after dumping.
Title: Re: Clogged black tank
Post by: Texhub on April 17, 2020, 06:27:07 pm
Great man Charlie Brown!


Fudge on the table for you as a reward!
Title: Re: Clogged black tank
Post by: Moby on April 17, 2020, 06:37:01 pm
Great man Charlie Brown!


Fudge on the table for you as a reward!


If it's all the same to you........
I'd prefer something OTHER than fudge.
Title: Re: Clogged black tank
Post by: Want2rv on April 17, 2020, 07:23:31 pm
I can't believe I've been riveted to a black tank problem, but I have!!!
Strange times!!!
Moby, job well done!
Thank you for helping someone who was in need!!!
Title: Re: Clogged black tank
Post by: Johnstons on April 17, 2020, 07:40:33 pm
That's different than when my large animal veterinarian friend stuck out a brown covered hand and when I backed away he said "come on now, it's only grass and water."
Title: Re: Clogged black tank
Post by: Moby on April 17, 2020, 07:55:24 pm

Thank you for helping someone who was in need!!!


I remember our first major trip out - to go see the solar eclipse in SC.
 I got Alice in a bad spot and was mostly stuck.....after dark. Before I knew it, at least six people came to help me out of my jamb.
 It was that night when I truly understood how good the people were in the club I had just joined.
  How could I NOT help a neighbor out?