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01-17-2012, 06:58 PM
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#1
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Junior Member
Join Date: Jan 2012
Posts: 2
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Black tank auto flush plugged
Hi all, My wife and I are proud new owners of a Tiffin Alegro Bay 38ft chassie workhorse, on our last trip out our black tank auto flush valve became clogged, this past weekend I removed the sensor from the black tank and cleaned it, after replacing it back in to the tank it seems to be plugged? no water passing thru.
any advice would be appriciated
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01-17-2012, 07:20 PM
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#2
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Senior Member
Tiffin Owners Club Workhorse Chassis Owner
Join Date: Oct 2009
Location: Warner Robins, GA
Posts: 2,613
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This is a common problem on the black tank sprayer. You can remove it and drill the holes out a little larger to keep it from clogging.
Check out the Tiffin site and do a search to find out how to and what size drill bit to use.
TiffinRVNetwork
__________________
Jon & Sue Francis (Retired U.S.A.F.)
Lil Girl-Rescued, Abby Rescued, Peaches Rescued
06 Allegro 35TSA Workhorse Chassis
2013 Chevy Spark Dinghy
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01-18-2012, 07:26 AM
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#3
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Senior Member
Join Date: Feb 2007
Location: Florida
Posts: 1,193
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Pretty common problem with flush systems. There is a backflow prevention valve on the line for the flush, normally found in the shower vanity that has a tendency to malfunction. Check it first. If that is not it then you probably will have to remove and clean out the holes. If the coach is new, that should be a warranty issue. Good luck.
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01-18-2012, 09:48 PM
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#4
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Senior Member
Join Date: Jan 2009
Posts: 488
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Hey me too!! I went out a few weeks ago and after dumping the black tank I tried to flush... Nothing I could not hear any water going in. Guess I have to track down this sprayer pipe in the tank?? Now that has got to be tons of work I can barley even see the darn tank.
__________________
2005 Newell p2000i
Detroit /allison
2010 Avalanche
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01-23-2012, 05:42 PM
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#5
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Junior Member
Join Date: Jan 2012
Posts: 2
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good luck to you as well, thanks for replying
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01-23-2012, 05:54 PM
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#6
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Moderator Emeritus
Join Date: Jan 2007
Location: Litchfield Park, Arizona
Posts: 10,530
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Hi and
Ditto to all of the above replies... all brands seem to suffer from the same issue.
Rick
__________________
Rick, Nancy, Peanut & Lola our Westie Dogs & Bailey the Sheltie.
2007 Itasca Ellipse 40FD
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01-23-2012, 11:10 PM
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#7
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Senior Member
Join Date: Jun 2007
Location: Outer Banks NC
Posts: 141
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On my Bus, this happened as I got lazy and did not use the spray flush device every time. I believe that when the tank is nearly full and you are traveling, solids slosh around and foul the small ports in the spray head, dry out later leaving solids to block the small ports. My spray head is on top of the black tank in a location that requires that both the top access panel and the entire back panel to be removed to access the spray head. Not wanting to do this, I rigged a tank and hose to the spray head, bypassing the vacuum breaker, added black tank crud remover and allowed the remover to slowly drain into the tank through the spray head. It took nearly a week for all of the chemical to drain into the black tank, but it did the job and works perfectly now. I NEVER fail to use the tank flush head now.
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Outer Banks NC
2005 Allegro Bus 38 ft.
2004 Acura MDX toad
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01-24-2012, 05:35 AM
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#8
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Senior Member
Tiffin Owners Club Fleetwood Owners Club Appalachian Campers
Join Date: Jul 2007
Location: Titusville, FL
Posts: 694
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The location of the sprayer varies, from model to model. On our Phaeton, it was behind the solid panel, on the PS. After removing the panel you can get to the sprayer and remove it from the tank, just three screws. Drill out the holes to 3/32, and replace on the tank. Should be no more problems. The side panels are just screwed to the frame. Just be careful removing the side panel. I used a milk carton, with an old blanket on top to let the panel down easy. Wouldn't hurt to have an extra pair of hands on the job.
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"Home is where we park it" SEMPER FI
Winnie 30 RESS UltraLite TT 2015
Ford F250 XLT 2015
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01-24-2012, 06:23 AM
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#9
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Senior Member
Join Date: Jul 2007
Posts: 295
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Srrv...since you are new owners, have you used the black tank flush before? We thought ours quit after the first time using it, however realized it had never worked..the flush hose was kinked so no water was getting in at all.
Had it repaired without a problem.
__________________
Sue, Marty and Smudge, our empty nest Havanese
2011 Tiffin Breeze 32
Towing 2007 Saturn Aura XR
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01-25-2012, 05:07 AM
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#10
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Senior Member
Fleetwood Owners Club
Join Date: Dec 2011
Location: Willow Lakes RV & Golf Resort, FL
Posts: 3,163
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On our MH the black tank valve must be open for the sprayer to work. Have you checked this out?
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01-25-2012, 08:27 PM
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#11
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Senior Member
Tiffin Owners Club Workhorse Chassis Owner
Join Date: Oct 2009
Location: Warner Robins, GA
Posts: 2,613
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Quote:
Originally Posted by Clayobx
On our MH the black tank valve must be open for the sprayer to work. Have you checked this out?
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On ours the black tank valve doesn't have to be open but if you forget and leave the black tank flush running you will wish it had been.
(No, I don't speak from personal experience.)
__________________
Jon & Sue Francis (Retired U.S.A.F.)
Lil Girl-Rescued, Abby Rescued, Peaches Rescued
06 Allegro 35TSA Workhorse Chassis
2013 Chevy Spark Dinghy
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01-25-2012, 09:18 PM
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#12
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Moderator Emeritus
Join Date: Jan 2007
Location: Litchfield Park, Arizona
Posts: 10,530
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Quote:
Originally Posted by jfran304
On ours the black tank valve doesn't have to be open but if you forget and leave the black tank flush running you will wish it had been.
(No, I don't speak from personal experience.)
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Well... I can speak from personal experience.
I really like being able to fill the black tank via the flush connection for cleaning purposes but found out the hard way that one cannot try to multi task while doing this.
Hopefully, it's one of those things that I'll only do once.
Rick
__________________
Rick, Nancy, Peanut & Lola our Westie Dogs & Bailey the Sheltie.
2007 Itasca Ellipse 40FD
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02-01-2012, 06:53 AM
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#13
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Senior Member
Join Date: Jul 2011
Posts: 379
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I came very close to having a major issue when I decided to back wash the black tank with the valve CLOSED. Only a panic shout from the wife woke me up to opening the valve in the nick of time!
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02-01-2012, 06:59 AM
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#14
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Registered User
Join Date: Oct 2010
Location: Central Florida
Posts: 525
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When you remove the spray head from the tank and get ready to drill out the holes slightly larger, 3/32 is the drill size recommended.
Been there and done it. Have not had a problem since.
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R & E
No RV at the moment
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