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03-30-2022, 11:34 AM
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#1
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New Member
Join Date: Mar 2022
Location: Willis
Posts: 2
M.O.C. #30615
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Two tanks, One Flush?
2022 3761FL
My 5er has two black tanks, one for the front toilet, and one for the back, with two dump levers. However, I noticed when using the power flush, only one of the tanks fills up.
When having one tank closed, it fills, but nothing comes out of the other one. Did Keystone really only design these campers with only one tank that has the power flush? Am I missing something?
I don’t see anything in the owners manual and searched briefly online with nothing. Thanks!
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03-30-2022, 01:20 PM
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#2
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Montana Master
Join Date: Oct 2012
Location: Box Elder
Posts: 4,776
M.O.C. #12947
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Just one flush system per tank. You can just drain the other, then add water and drain again to flush it. It's not really a big thing, many RVs never had any kind of flush system and got along just fine.
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Bob & Becky
2012 3402RL
2012 Chevy 2500HD D/A CC 4WD
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03-30-2022, 01:25 PM
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#3
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Montana Master
Join Date: Jun 2017
Location: Northern Illinois
Posts: 525
M.O.C. #19994
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agree with Bob, my first 3 RV's didn't have a flush system, I don't use mine every dump
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The "Black Pearl"-2017 3731FL Legacy Package
2017 F-450 Platinum, 6.7 PSD
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03-30-2022, 02:01 PM
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#4
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Montana Fan
Join Date: Jun 2019
Location: new river
Posts: 417
M.O.C. #24181
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my 3931 fb has 2 black tank washes. the one is kind of hidden in the water closet top right and i dont think it was labled. if need i can send a picture later what mine looks like just let me know.
al meyer
3931fb
az
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al meyer
3931fb
az
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04-13-2022, 05:22 PM
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#5
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Montana Fan
Join Date: Apr 2018
Location: Peachtree City
Posts: 137
M.O.C. #21599
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If your rig was ordered with the black tank flush system, it will be installed on both tanks. Each tank has separate connection. Check around for another connection. Had same issue until it was pointed out to me at an MOC rally. It was in plain sight but not labeled.
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2019 3931FB, 2011 F450 DRW KR
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04-13-2022, 08:20 PM
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#6
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Established Member
Join Date: Feb 2021
Location: Forney
Posts: 16
M.O.C. #28107
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Quote:
Originally Posted by NOWhineFullTime
2022 3761FL
My 5er has two black tanks, one for the front toilet, and one for the back, with two dump levers. However, I noticed when using the power flush, only one of the tanks fills up.
When having one tank closed, it fills, but nothing comes out of the other one. Did Keystone really only design these campers with only one tank that has the power flush? Am I missing something?
I don’t see anything in the owners manual and searched briefly online with nothing. Thanks!
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I have a 2021 3761FL & same issue. It appears to be just one tank that gets flushed. Not a good design. Beyond that I hope you’re enjoying your floor plan, I live in mind and have loved it for a year now. It has also been great on the road as I’ve put several thousand miles on it seeing Texas, Louisiana, Mississippi and New Mexico.
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Drew
2021 Montana 3761FL, 2020 Ram 3500 diesel DRW, Pull-Rite 20K
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04-15-2022, 10:38 AM
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#7
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Montana Fan
Join Date: Apr 2018
Location: Peachtree City
Posts: 137
M.O.C. #21599
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Can you post a picture of your wet bay showing all connections?
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2019 3931FB, 2011 F450 DRW KR
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04-15-2022, 07:36 PM
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#8
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Montana Fan
Join Date: Jun 2019
Location: new river
Posts: 417
M.O.C. #24181
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here is a pic of mine 3931fb
i added quick disconnects to each.
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al meyer
3931fb
az
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