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06-10-2020, 01:41 PM
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#1
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Established Member
Join Date: Dec 2019
Location: New River
Posts: 14
M.O.C. #25533
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Fresh Water Lost in Traveling Uphill
Is there a way to plug the fresh water tank vent to keep from losing water when traveling uphill? We have filled our fresh water tank at home when traveling to a dry camp spot to find out we lose fresh water when get to camp site. 2020 MHC33L
Bob & Rita Nesteby
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06-10-2020, 02:13 PM
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#2
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Montana Fan
Join Date: May 2015
Location: fargo
Posts: 187
M.O.C. #17461
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Quote:
Originally Posted by Fengshuiladie
Is there a way to plug the fresh water tank vent to keep from losing water when traveling uphill? We have filled our fresh water tank at home when traveling to a dry camp spot to find out we lose fresh water when get to camp site. 2020 MHC33L
Bob & Rita Nesteby
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Are you meaning that you loose a significant amount through the vent at the rear of the 5th wheel?
How much of the tank did you loose? Did it come off full per the gauge?
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06-10-2020, 02:16 PM
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#3
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Established Member
Join Date: Dec 2019
Location: New River
Posts: 14
M.O.C. #25533
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2/3 of tank lost. Yes, comes out of vent in back.
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06-10-2020, 02:23 PM
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#4
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Montana Fan
Join Date: May 2015
Location: fargo
Posts: 187
M.O.C. #17461
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Quote:
Originally Posted by Fengshuiladie
2/3 of tank lost. Yes, comes out of vent in back.
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oh wow... that is a significant amount
On my vent their is a baffle type of deal that is removable (its like a cover that goes over the vent, open on the bottom). Do you still have that?
My guess,
Whatever baffle or preventer that is supposed to be inline of the vent isn't working correctly.
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06-10-2020, 02:26 PM
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#5
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Established Member
Join Date: Dec 2019
Location: New River
Posts: 14
M.O.C. #25533
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Yes we do have the baffle cover over vent. It probably is not working correctly.
Thanks for your input :-)
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06-10-2020, 03:01 PM
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#6
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Established Member
Join Date: Mar 2019
Location: Cheyenne
Posts: 29
M.O.C. #23582
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That happens with my 3120 also, after filling I take the vent cover off and put a boat plug in it while traveling, just remember to take it out on arrival and while filling so the tank can breath, may cause problems if forgotten,like we need something else on the list.
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06-10-2020, 03:35 PM
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#7
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Established Member
Join Date: Dec 2019
Location: New River
Posts: 14
M.O.C. #25533
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Sounds like a good idea. haha another thing on list to remember is right!
Thanks for idea!
Bob Nesteby
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06-10-2020, 03:42 PM
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#8
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Montana Master
Join Date: Oct 2012
Location: Box Elder
Posts: 4,774
M.O.C. #12947
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I have been thinking about this issue, with this and others that have the same problem. The fresh water tank is pretty much a closed system except for the one vent out the side. It’s pretty hard to get water out of a container through a small opening unless there is way for air to get in to displace the water. We are eight years with our rig and have never lost water from the tank at the rear of the rig, which we usually run with it full, and most people never have this problem. I’m thinking there might be a crack in the tank or something else that is open allowing air to get in.
__________________
Bob & Becky
2012 3402RL
2012 Chevy 2500HD D/A CC 4WD
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06-10-2020, 04:06 PM
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#9
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Montana Master
Join Date: May 2019
Location: Alton
Posts: 2,897
M.O.C. #24086
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It must be a steep hill you are climbing.
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Daryl and Marianne,
2019 3130re 20th Anniversary Edition
2016 F350 Lariat
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06-10-2020, 06:35 PM
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#10
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Montana Master
Join Date: Oct 2004
Location: Salem
Posts: 7,670
M.O.C. #2283
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It would be impossible for your truck to pull your camper up a hill that is steep enough to drain that much water out of your tank. You need to look for another problem.
Lynwood
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06-10-2020, 06:51 PM
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#11
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Montana Master
Join Date: Mar 2016
Location: Catoosa
Posts: 786
M.O.C. #18384
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Could just be the notoriously inaccurate tank gauges
__________________
2015 3100RL legacy...2005 Ford F-250 CC SB. Tows like a charm! 4/19 Updated to 2017 Chevy 3500 CC SB SRW -hope it tows as well as my F 250 did!
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06-10-2020, 11:11 PM
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#12
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Seasoned Camper
Join Date: Dec 2017
Location: Elverta, CA
Posts: 69
M.O.C. #20905
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We had the same problem. Dealer said there is supposed to be a loop in the hose from the tank to the vent/gravity fill port. Ours did not have that loop in it and water was being siphoned out. I used a boat plug until they fixed it.
__________________
2018 Montana 3120RL
2017 Ford F-350
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06-11-2020, 04:29 PM
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#13
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Established Member
Join Date: Feb 2019
Location: East Aurora
Posts: 25
M.O.C. #23553
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I had the same problem. I pull the screen out and stick a rubber cork in the hole for traveling. Every turn I made I could see water coming out of vent. Owners manual says to add sanitizer there so they can't have a loop.
__________________
2019 Montana High Country 330RL
2016 F350 4x4 CCLB SRW
B&W Companion Hitch
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06-11-2020, 05:47 PM
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#14
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Montana Master
Join Date: Mar 2020
Location: Waynesville
Posts: 533
M.O.C. #25947
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Quote:
Originally Posted by mlh
It would be impossible for your truck to pull your camper up a hill that is steep enough to drain that much water out of your tank. You need to look for another problem.
Lynwood
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I agree with Lynwood. I would be looking under the trailer and all the plumbing that goes to the fresh water tank. Also Check to see that your dump handle for the fresh water tank is all the way closed. I gone up a 7% grade and we had full water tank when we got to the camp ground.
Also, I didn't read all of the answer's but how accurate is your tank gauge? It may be telling you something that not correct.
Charlie
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06-11-2020, 05:48 PM
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#15
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Established Member
Join Date: Apr 2020
Location: Thornton
Posts: 15
M.O.C. #26120
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I have had the same problem with our 2020 334bh. Loss 2/3 of water in tank. First trip just thought I didn’t get it full. Planing on at trip with altitude of 12,000 ft so should I plug the vent as some have suggested? Or try to find water up there?
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Mark
2020 334BH
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06-17-2020, 01:26 PM
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#16
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Montana Fan
Join Date: Dec 2015
Location: Mount Shasta
Posts: 107
M.O.C. #18143
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I had the same problem on my HCM. The vent in the back was right at the top of the tank. Actually too low to prevent the water from surging to and out the vent when I pulled forward, not to mention up a hill. We tried the loop and several other options. Non worked. We finally raised the vent about 6 inches and that solved the problem. It also created another problem. I either had a hole where the old vent was or as I did, left the vent there (disconnected) and had two one right above the other.
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2017 Ram 3500, Aisen Trans, Short bed Crew Cab. B&W OEM Slider,
2018 Montana 3810MS
Russ & Nancy Porterfield
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06-17-2020, 01:49 PM
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#17
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Seasoned Camper
Join Date: Oct 2019
Location: Canmore
Posts: 69
M.O.C. #25190
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Vent cover
Quote:
Originally Posted by Whiskeydick
That happens with my 3120 also, after filling I take the vent cover off and put a boat plug in it while traveling, just remember to take it out on arrival and while filling so the tank can breath, may cause problems if forgotten,like we need something else on the list.
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Where is the vent cover on the 3120? That is what I have, and I haven't noticed it.
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06-17-2020, 04:36 PM
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#18
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Seasoned Camper
Join Date: Jul 2019
Location: Silver City
Posts: 80
M.O.C. #24575
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We have the same problem, and now use the boat plug. It works fine, but still shouldn't have to do that. Our first couple of trips with the trailer we ran out of water over the weekend. Thought we weren't filling it right till I noticed at every turn on the road water would shoot out the vent. Got a couple boat plugs at Walmart and keep one for a spare.
__________________
2016 F-250 Lariat Super Duty 6.7L
2019 High Country 310RE
Andersen Ultimate hitch
Air Lift 5000 airbags
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06-17-2020, 07:28 PM
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#19
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Established Member
Join Date: Dec 2019
Location: New River
Posts: 14
M.O.C. #25533
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Thanks everyone for your input. We bought boat plug and will just have to remember to take out when get to camp site. :-)
R Nesteby
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06-17-2020, 07:58 PM
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#20
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Established Member
Join Date: Aug 2017
Location: TwinFalls
Posts: 28
M.O.C. #20313
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Yes definitely remove the plug. I forgot the only time I plugged mine and also at the campsite inadvertently switched to the fill tank position. What a loud explosion it made when the tank ruptured. Won’t make that mistake again I hope
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Larry L
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