Journey with Confidence RV GPS App RV Trip Planner RV LIFE Campground Reviews RV Maintenance Take a Speed Test Free 7 Day Trial ×


Reply
 
Thread Tools Display Modes
Old 09-22-2021, 04:52 PM   #1
Senior Member
 
rk06382's Avatar
 
Join Date: Oct 2016
Location: Alaska
Posts: 1,625
Back flush vacuum breaker location on 2018 28DS

Does anyone know where the back flush vacuum breaker is located on 2018 28DS? It has the same bathroom layout as the 30DS.

I have a drip that only happens when I use the back flush. It leaks into the compartment under the shower on the passenger side.

Click image for larger version

Name:	FR3 side view DRIP 20170423_183659.jpg
Views:	57
Size:	294.6 KB
ID:	263236

Next question: How do I get to it? It looks like it is behind the shower.
__________________
Robert
2018 FR3 28DS | Boondock 99% of the time
Samlex EVO-3012 Inverter/Charger | 600ah Battle Born LiFePO4 | Victron BMV-712 & MPPT 100/50 | 800W Renogy Solar | Fan-Tastic Fans | Blue Ox TruCenter | SnapPads | SumoSprings | Koni Shocks | RVLock
Solar Power & Battle Born batteries
rk06382 is online now   Reply With Quote
Old 09-22-2021, 05:39 PM   #2
Pickin', Campin', Mason
 
5picker's Avatar
 
Join Date: Aug 2015
Location: South Western PA
Posts: 15,851
Can't say for certain on your unit but many motorhome owners say it is behind a shower wall and is accessed by removing the shower faucets.
__________________
_________________________________________
2016 Flagstaff 8529IKBS Diamond Package 5th Wheel•Goodyear Endurance Tires•2017 Ford F-Series SCREW 4x4•Factory Puck•B&W Companion•TST Tire Monitor w/Repeater•Sinemate 3500w Gen.
F&AM Lodge 358 Somerset, PA - JAFFA Shrine - Altoona, PA

Days Camped: '17=38 '18=49 '19=58 '20=110 '21=116 '22=88
5picker is offline   Reply With Quote
Old 09-22-2021, 05:41 PM   #3
D W
Senior Member
 
D W's Avatar
 
Join Date: Sep 2016
Location: ALASKA (World's Biggest Campground)
Posts: 5,110
All the vacuum breaks I've seen are affixed up underneath a sink vanity in order that they are higher than toilet water level.
__________________
'07 K3500 Silverado LT Crew Duramax (LBZ)
2016 Salem 27RKSS
1984 CHEV SCOTTSDALE K20 2GCGK24J0E1XXXXXX (Chevrolet Legends-Class of 2019)
"...exhaust fluid? We don't need no stinkin' exhaust fluid"
D W is offline   Reply With Quote
Old 09-23-2021, 10:00 AM   #4
Senior Member
 
robo44's Avatar
 
Join Date: Oct 2018
Location: San Jose, CA
Posts: 935
I found mine (2019 FR3 33DS) in the bathroom vanity, way up high behind the sink plumbing. it took me 2 times to stick my head with a flashlight to see it way up nearly hidden.
__________________
2019 FR3 33DS Motorhome
650 Watts Solar, 400Ah LIFEPO4, 2000 Watt Inverter, 40A DC/DC Charger, SumoSprings, Roadmaster Steering Stabilizer, BlueOx Trac Bar, Truma AquaGo WH, NVIDIA Shield TV
Days Camping
2019 57:2020 20:2021 30:2022 20:
robo44 is offline   Reply With Quote
Old 09-23-2021, 10:13 AM   #5
Kanadian Kamper
 
kenandterry's Avatar
 
Join Date: Sep 2010
Location: Southern Ontario
Posts: 5,947
Quote:
Originally Posted by robo44 View Post
I found mine (2019 FR3 33DS) in the bathroom vanity, way up high behind the sink plumbing. it took me 2 times to stick my head with a flashlight to see it way up nearly hidden.
^^^^^^^^
Yup…..what he said.
__________________

Ken and Terry
2018 Sunseeker 2430S-CD carried by a 2017 Ford E450
Former Georgetown 330TS owner for 10 years with more mods than I can count.
kenandterry is offline   Reply With Quote
Old 09-23-2021, 10:25 AM   #6
Senior Member
 
Join Date: May 2019
Posts: 2,381
Quote:
Originally Posted by D W View Post
All the vacuum breaks I've seen are affixed up underneath a sink vanity in order that they are higher than toilet water level.
And the vacuum breaks you haven’t seen are the ones hidden inside an inside wall, or behind a shower stall, where that can only be accessed by cutting the wall or shower open.

On my Sunseeker it is definitely not under the sink vanity. The plumbing from the tank flush comes from the basement and disappears up into an interior wall behind the toilet. There are no removable service panels on either side of that wall.
__________________
2020 Sunseeker 2440DS on 2019 Ford E-450, Trekker cap, Topaz paint
BehindBars is offline   Reply With Quote
Old 09-23-2021, 11:44 AM   #7
D W
Senior Member
 
D W's Avatar
 
Join Date: Sep 2016
Location: ALASKA (World's Biggest Campground)
Posts: 5,110
Quote:
Originally Posted by BehindBars View Post
And the vacuum breaks you haven’t seen are the ones hidden inside an inside wall, or behind a shower stall, where that can only be accessed by cutting the wall or shower open.

On my Sunseeker it is definitely not under the sink vanity. The plumbing from the tank flush comes from the basement and disappears up into an interior wall behind the toilet. There are no removable service panels on either side of that wall.
Makes about as much sense as putting an electrical junction box behind the drywall. Anyway, you have my deepest sympathy.
__________________
'07 K3500 Silverado LT Crew Duramax (LBZ)
2016 Salem 27RKSS
1984 CHEV SCOTTSDALE K20 2GCGK24J0E1XXXXXX (Chevrolet Legends-Class of 2019)
"...exhaust fluid? We don't need no stinkin' exhaust fluid"
D W is offline   Reply With Quote
Old 09-23-2021, 11:53 AM   #8
Site Team
 
Mr. Dan's Avatar
 
Join Date: Mar 2014
Location: Grayson County, Texas
Posts: 18,620
Quote:
Originally Posted by 5picker View Post
Can't say for certain on your unit but many motorhome owners say it is behind a shower wall and is accessed by removing the shower faucets.
From its sound, I’d say mine is behind my shower wall and is probably accessible by removing my shower faucets. In 7+ years, it hasn’t leaked (knock on luan).
__________________
FR Wildcat 295RSX / GMC Sierra

Nights Camped: '13 = 49/'14 = 74/'15 = 74/'16 = 85/'17 = 110/'18 = 111/'19 = 86/'20 =108/'21 = 115/'22 = 40; Booked for 2022 = 70
Mr. Dan is online now   Reply With Quote
Old 09-23-2021, 05:29 PM   #9
Senior Member
 
rk06382's Avatar
 
Join Date: Oct 2016
Location: Alaska
Posts: 1,625
Quote:
Originally Posted by rk06382 View Post
Does anyone know where the back flush vacuum breaker is located on 2018 28DS? It has the same bathroom layout as the 30DS.

I have a drip that only happens when I use the back flush. It leaks into the compartment under the shower on the passenger side.



Next question: How do I get to it? It looks like it is behind the shower.
Update clarification: The Drip is on the right side below the shower.
Click image for larger version

Name:	FR3 28DS Drip location.jpg
Views:	34
Size:	156.6 KB
ID:	263298

Same shower as FR3 30DS.
Click image for larger version

Name:	FR3 30DS Floorplan.jpg
Views:	35
Size:	145.0 KB
ID:	263299
__________________
Robert
2018 FR3 28DS | Boondock 99% of the time
Samlex EVO-3012 Inverter/Charger | 600ah Battle Born LiFePO4 | Victron BMV-712 & MPPT 100/50 | 800W Renogy Solar | Fan-Tastic Fans | Blue Ox TruCenter | SnapPads | SumoSprings | Koni Shocks | RVLock
Solar Power & Battle Born batteries
rk06382 is online now   Reply With Quote
Old 03-07-2022, 06:04 PM   #10
Senior Member
 
rk06382's Avatar
 
Join Date: Oct 2016
Location: Alaska
Posts: 1,625
I still do not know how to fix this leak. Snow is melting & I need to get it ready for the RV season.

I had a RV Tech look at it last October. He said it looked like a 1/2" elbow on the black tank. He saw calcium marks on the elbow. He did mot have a clue as to how to repair the elbow as it is above the compartment door.

My thoughts:
If the elbow is pointed up it would go behind the shower & bedroom closet. This also the wall that hides the roof vent pipes.

Addition pictures of the leak.

Click image for larger version

Name:	Leak 20210907_183953.jpg
Views:	30
Size:	386.1 KB
ID:	269751

Click image for larger version

Name:	Leak.20210907_183958.jpg
Views:	29
Size:	242.1 KB
ID:	269752

Click image for larger version

Name:	leak.20210907_184135_Moment.2..jpg
Views:	27
Size:	322.6 KB
ID:	269753

I still need to repair this leak which only happens when I try to use the backflush.
__________________
Robert
2018 FR3 28DS | Boondock 99% of the time
Samlex EVO-3012 Inverter/Charger | 600ah Battle Born LiFePO4 | Victron BMV-712 & MPPT 100/50 | 800W Renogy Solar | Fan-Tastic Fans | Blue Ox TruCenter | SnapPads | SumoSprings | Koni Shocks | RVLock
Solar Power & Battle Born batteries
rk06382 is online now   Reply With Quote
Old 03-07-2022, 06:43 PM   #11
Senior Member
 
Join Date: Apr 2018
Location: St. Louis, MO
Posts: 106
If you can’t locate the vacuum breaker as others have said under your vanity, I then would suggest to remove your shower valve if it’s on the bedroom side of the shower and look there. If it is then run water through your flush to see if the leak is at the vacuum breaker or the elbow in your photos. Good luck.
__________________
Charlie & Cindy
2014 Duramax
2017 Wildcat 32 WB
Chascin is offline   Reply With Quote
Old 03-07-2022, 07:08 PM   #12
Site Team
 
Mr. Dan's Avatar
 
Join Date: Mar 2014
Location: Grayson County, Texas
Posts: 18,620
Quote:
Originally Posted by Chascin View Post
If you can’t locate the vacuum breaker as others have said under your vanity, I then would suggest to remove your shower valve if it’s on the bedroom side of the shower and look there. If it is then run water through your flush to see if the leak is at the vacuum breaker or the elbow in your photos. Good luck.
Locating the vacuum breaker no longer seems to be the problem. Now the question is how to fix a leak. See the post immediately before yours.
__________________
FR Wildcat 295RSX / GMC Sierra

Nights Camped: '13 = 49/'14 = 74/'15 = 74/'16 = 85/'17 = 110/'18 = 111/'19 = 86/'20 =108/'21 = 115/'22 = 40; Booked for 2022 = 70
Mr. Dan is online now   Reply With Quote
Old 03-07-2022, 07:17 PM   #13
Senior Member
 
rk06382's Avatar
 
Join Date: Oct 2016
Location: Alaska
Posts: 1,625
Quote:
Originally Posted by Chascin View Post
If you can’t locate the vacuum breaker as others have said under your vanity, I then would suggest to remove your shower valve if it’s on the bedroom side of the shower and look there. If it is then run water through your flush to see if the leak is at the vacuum breaker or the elbow in your photos. Good luck.
We still have snow on the ground. The pictures in the above post was from last September.

I have looked inside the wall behind the shower valves. On the left & right of the valve is a 2x4 & a black vent pipe. The leak is to the right of the picture.

Click image for larger version

Name:	Shower 20180712_202538.jpg
Views:	26
Size:	200.1 KB
ID:	269757
__________________
Robert
2018 FR3 28DS | Boondock 99% of the time
Samlex EVO-3012 Inverter/Charger | 600ah Battle Born LiFePO4 | Victron BMV-712 & MPPT 100/50 | 800W Renogy Solar | Fan-Tastic Fans | Blue Ox TruCenter | SnapPads | SumoSprings | Koni Shocks | RVLock
Solar Power & Battle Born batteries
rk06382 is online now   Reply With Quote
Old 03-09-2022, 11:56 AM   #14
Senior Member
 
rickemo's Avatar
 
Join Date: Jan 2020
Location: Mount Joy, PA
Posts: 120
Quote:
Originally Posted by rk06382 View Post
Does anyone know where the back flush vacuum breaker is located on 2018 28DS? It has the same bathroom layout as the 30DS.

I have a drip that only happens when I use the back flush. It leaks into the compartment under the shower on the passenger side.

Attachment 263236

Next question: How do I get to it? It looks like it is behind the shower.
Let me start by professing my ignorance on this subject. What is the "back flush vacuum breaker"? We have noticed the same issue in our 2020 FR3-30DS. It happened once last year when we were in Texas and again this year while in Florida. We thought maybe it was happening when we use the washer/dryer combo so we always open the grey tank before using the washer.
We also have had an issue with opening the grey tank and instead of the water rushing out there is just a trickle. The first time this happened I took the coach for a short drive and when I tried again it rushed out like normal. The second time I purchased the Camco Dual Flush Pro and back flushed for about 30 seconds and the grey tank came rushing out like normal. I'm not sure if these issues are related but I just thought I'd mention my issues just in case.
__________________
Rick & Phy + Sammi our mini labradoodle
2020 Forest River FR3 30DS
2016 Jeep Wrangler Sport
“Don’t take life too seriously...Nobody gets out alive anyway”
rickemo is offline   Reply With Quote
Old 03-09-2022, 03:44 PM   #15
Senior Member
 
Join Date: Apr 2018
Location: St. Louis, MO
Posts: 106
Quote:
Originally Posted by rk06382 View Post
We still have snow on the ground. The pictures in the above post was from last September.

I have looked inside the wall behind the shower valves. On the left & right of the valve is a 2x4 & a black vent pipe. The leak is to the right of the picture.

Attachment 269757
Is it leaking up high as in to the right of your shower valves? If so then I would suspect the vacuum breaker. Probably hard to see with the vent pipe in the way. Maybe use a mirror and light to look for water beading. If it is the vacuum breaker leaking that could explain the calcium stains on the elbow below.
__________________
Charlie & Cindy
2014 Duramax
2017 Wildcat 32 WB
Chascin is offline   Reply With Quote
Old 03-09-2022, 04:07 PM   #16
Senior Member
 
bubbles's Avatar
 
Join Date: Dec 2012
Posts: 6,456
Quote:
Originally Posted by rickemo View Post
Let me start by professing my ignorance on this subject. What is the "back flush vacuum breaker"?
I think the correct verbiage is VACUUM BREAKER-CHECK VALVE (vbcv) and is inserted in line with the black tank flush tubing. The system is self contained (dedicated) to just cleaning out the black tank. The vbcv has a plunger that seals off an ambient opening when water pressure is applied and when pressure is removed allows the residual water in the incoming line to drain back out emptying the valve cavity till sealed again by the plunger. Additionally, there is a spring loaded ball check valve that opens the output side of the valve to the black tank for cleaning when pressure is applied and closes when pressure is removed. Only seen these types used in Forest River RV's:
Attached Thumbnails
Click image for larger version

Name:	61v1efUQetL._SX466_.jpg
Views:	12
Size:	10.9 KB
ID:	269843   Click image for larger version

Name:	vacuum-breaker black.jpg
Views:	13
Size:	13.7 KB
ID:	269844  
bubbles is offline   Reply With Quote
Old 05-10-2022, 10:26 AM   #17
Senior Member
 
rk06382's Avatar
 
Join Date: Oct 2016
Location: Alaska
Posts: 1,625
Black Tank Flush Leak

Quote:
Originally Posted by rk06382 View Post
I still do not know how to fix this leak. Snow is melting & I need to get it ready for the RV season.

I had a RV Tech look at it last October. He said it looked like a 1/2" elbow on the black tank. He saw calcium marks on the elbow. He did mot have a clue as to how to repair the elbow as it is above the compartment door.

My thoughts:
If the elbow is pointed up it would go behind the shower & bedroom closet. This also the wall that hides the roof vent pipes.

Addition pictures of the leak.

Attachment 269751

Attachment 269752

Attachment 269753

I still need to repair this leak which only happens when I try to use the backflush.
I have taken some more pictures and discovered the leak is the on the Black Tank Flush fitting.

Side view:
Click image for larger version

Name:	BlackTank Leak IPC_2022-05-01.18.24.43.3640.jpg
Views:	14
Size:	251.4 KB
ID:	272999

Bottom view:
Click image for larger version

Name:	BlackTank Leak IPC_2022-05-01.18.42.10.5240.jpg
Views:	15
Size:	284.4 KB
ID:	273000

Two questions:
Why is there so much black caulking on it?

And How do I repair it?
__________________
Robert
2018 FR3 28DS | Boondock 99% of the time
Samlex EVO-3012 Inverter/Charger | 600ah Battle Born LiFePO4 | Victron BMV-712 & MPPT 100/50 | 800W Renogy Solar | Fan-Tastic Fans | Blue Ox TruCenter | SnapPads | SumoSprings | Koni Shocks | RVLock
Solar Power & Battle Born batteries
rk06382 is online now   Reply With Quote
Old 05-14-2022, 01:43 AM   #18
Senior Member
 
rk06382's Avatar
 
Join Date: Oct 2016
Location: Alaska
Posts: 1,625
FIXXED!!!

Quote:
Originally Posted by rk06382 View Post
I have taken some more pictures and discovered the leak is the on the Black Tank Flush fitting.

Side view:


Bottom view:


Two questions:
Why is there so much black caulking on it?

And How do I repair it?
After email help from Jason Haines (Forest River - Georgetown/FR3/GT3/GT5/GT7), I learned the Bolt was holding the tank up.

I first removed the black skirt. I then blocked up the tank & removed the nut. I was then able to lower the angle iron a couple of inches to access the fitting. To lower it any more, I would need to cut the water lines.
Click image for larger version

Name:	Leak elbow labled 20220512_130618.jpg
Views:	10
Size:	428.1 KB
ID:	273218

I was able to turn nipple almost a full turn. If I had more room, I would have removed the nipple & resealed with Teflon pipe tape. I will do this if the leak returns.
__________________
Robert
2018 FR3 28DS | Boondock 99% of the time
Samlex EVO-3012 Inverter/Charger | 600ah Battle Born LiFePO4 | Victron BMV-712 & MPPT 100/50 | 800W Renogy Solar | Fan-Tastic Fans | Blue Ox TruCenter | SnapPads | SumoSprings | Koni Shocks | RVLock
Solar Power & Battle Born batteries
rk06382 is online now   Reply With Quote
Old 05-16-2022, 11:52 AM   #19
Commercial Member
 
Join Date: Mar 2020
Posts: 165
Quote:
Originally Posted by rk06382 View Post
After email help from Jason Haines (Forest River - Georgetown/FR3/GT3/GT5/GT7), I learned the Bolt was holding the tank up.

I first removed the black skirt. I then blocked up the tank & removed the nut. I was then able to lower the angle iron a couple of inches to access the fitting. To lower it any more, I would need to cut the water lines.
Attachment 273218

I was able to turn nipple almost a full turn. If I had more room, I would have removed the nipple & resealed with Teflon pipe tape. I will do this if the leak returns.
Robert,

I'm glad Jason was able to help, feel free to private message me in the future if I can help further.

Thanks a lot,

Brent Shuttleworth
Forest River FR3
BShuttleworth is offline   Reply With Quote
Reply

Tags
breaker, cat, flush, location

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


» Featured Campgrounds

Reviews provided by

Disclaimer:

This website is not affiliated with or endorsed by Forest River, Inc. or any of its affiliates. This is an independent, unofficial site.



All times are GMT -5. The time now is 04:54 PM.