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08-11-2019, 11:44 PM
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#1
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Member
Join Date: Aug 2017
Posts: 80
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Fresh water tank capacity?
Hello All
Just wondering if I am missing something. My fresh water tank capacity is supposed to be 43 gallons according to the factory specs. However I recently purchased a gallon counter and can only seem to get about 27 gallons in. I let it burp a few times but will not take anymore water. It just continues to pour out of the fill hose. Also the meter in the trailer shows full. I have also filled a 6 gallon water can to verify the counter was correct. Maybe the drain doesn’t empty it out completely? I have let it drain out until nothing was left. Any thoughts are appreciated.
Trailer is a 2017 2304DS.
Thanks in advance
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2017 RW 2304DS
2011 Expedition w/HD tow package
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08-11-2019, 11:49 PM
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#2
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Senior Member
Join Date: Jul 2017
Location: California
Posts: 7,616
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The water capacity often includes the amount of water in the water heater and lines but you are still off a bunch.
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08-12-2019, 12:59 AM
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#3
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Just as confused as you
Join Date: Aug 2013
Location: south central Wisconsin
Posts: 5,108
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Also depending on the installation the fwt drain can be an inch or two from the bottom of the tank. The overfill or vent tube can be an inch or two from the top of the tank, they are hardly ever mounted on the top.
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Richard & Jill
2014 Flagstaff 832IKBS Classic Super Lite
2018 Silverado 1500 Crew Cab Z71 4WD All Star Edition
Camping since 1989, Seasonal since 2000.
Car Shredder Op/Tech, Scrap Metal Recycling - retired
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08-12-2019, 05:48 AM
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#4
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Senior Member
Join Date: May 2017
Posts: 5,712
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OR !!! you don't have the size of the tank that is advertised as being with the TT.
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08-12-2019, 06:55 AM
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#5
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Canadian Member
Join Date: Feb 2012
Location: Eastern GTA, Ontario, Canada
Posts: 6,235
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Did Rockwood increase the size of the fresh water tank for 2017 and is your 2304DS an early-2017 model year build?
Rockwood tends to start equipping their units with a model year’s upgraded spec components sometime after they start producing the new model year run. Often it happens around early summer, say June, and as the old part supply is exhausted.
For example, my 2019 was built in April 2018 (an early-2019) but it still has the external colour scheme, smaller fresh water tank and Reese Revolution pinbox of a late-2018. It has the fabric and internal colour scheme of a 2019 though. I would have liked to have a couple of the upgrades they did (including the larger FW tank) but others I specifically didn’t want (internal Nautilus P1 water management system that robs pass through storage), so I opted to buy a dealer stock unit rather than ordering.
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2023 Rockwood Signature 8262RBS
2016 Ford F-250 XLT SuperCrew, 6.2L, 4x4, 6'9" bed
2019 Rockwood Signature 8290BS (2019 - 2022)
2011 Rockwood Signature 8293SS (2015 - 2018)
2010 Rockwood Roo 23SS (2012 - 2014)
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08-12-2019, 07:40 AM
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#6
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Senior Member
Join Date: Sep 2015
Posts: 577
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Check the support of your fill and vent hoses.
It is a known problem that sometimes these hoses are left hanging and end you droping below the tank level which creates a water lock (the hoses fill with standing water) and don't let the air get out of the tank when filling.
When you start filling water, the pressure inside the tank start to increase and then you think the tank if full when water back up but in fact it is not full but pressured....
You may need to drop the enclosure to check these hoses. You can do that by unscrewing the L shaped plastic holder at the last cross bean in the frame, close to the rear bumper....
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2018 F150 XLT V8 HDPP
2018 Rockwood 2909WS
" Life is simpler when you plow around the stump..."
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08-12-2019, 10:52 AM
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#7
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Senior Member
Join Date: Jun 2012
Posts: 10,907
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Quote:
Originally Posted by itat
Did Rockwood increase the size of the fresh water tank for 2017 and is your 2304DS an early-2017 model year build?
Rockwood tends to start equipping their units with a model year’s upgraded spec components sometime after they start producing the new model year run. Often it happens around early summer, say June, and as the old part supply is exhausted.
For example, my 2019 was built in April 2018 (an early-2019) but it still has the external colour scheme, smaller fresh water tank and Reese Revolution pinbox of a late-2018. It has the fabric and internal colour scheme of a 2019 though. I would have liked to have a couple of the upgrades they did (including the larger FW tank) but others I specifically didn’t want (internal Nautilus P1 water management system that robs pass through storage), so I opted to buy a dealer stock unit rather than ordering.
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X2. Look on the sticker on the left front side of your TT. It will tell you the build date. Here's mine as an example. My "2016" was built in early 2015 and is essentially a 2015.
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2011 Traverse LT, 3.6L, FWD
2009 Silverado 1500 Ext Cab, 5.3L, 4x4, 3.73
2016 Silverado 2500HD Dbl Cab, 6.0L 4x4, 4.10
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08-12-2019, 11:17 AM
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#8
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Pickin', Campin', Mason
Join Date: Aug 2015
Location: South Western PA
Posts: 19,142
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There should also be a sticker somewhere that says what a full load of fresh water weighs.
Divide that by 8.345 and you know the gallons it holds.
Should look something like this... this one holds 31.39 gallons.
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2022 Cedar Creek 345IK 5th Wheel•Solar & Inverter•2024 Ford F-Series SCREW•7.3L•4x4•Factory Puck•B&W Companion•TST Tire Monitor w/Repeater•Sinemate 3500w Gen.
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Days Camped ☼ '19=118 ☼ '20=116 ☼ '21=123 ☼ '22=134 ☼ '23=118☼ '24=90
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08-12-2019, 12:20 PM
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#9
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Senior Member
Join Date: Jun 2012
Posts: 10,907
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Quote:
Originally Posted by 5picker
There should also be a sticker somewhere that says what a full load of fresh water weighs.
Divide that by 8.345 and you know the gallons it holds.
Should look something like this... this one holds 31.39 gallons.
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Even better answer!!
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08-12-2019, 01:38 PM
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#10
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Member
Join Date: Dec 2018
Posts: 91
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Mine was advertised as 48 gallons but I can only squeeze in 30 before it overflows.
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08-12-2019, 02:17 PM
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#11
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Senior Member
Join Date: Jun 2017
Location: Waukee, IA
Posts: 566
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Quote:
Originally Posted by 5picker
There should also be a sticker somewhere that says what a full load of fresh water weighs.
Divide that by 8.345 and you know the gallons it holds.
Should look something like this... this one holds 31.39 gallons.
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That's not always correct, either. My label shows 332 lbs of water which would be 40 gallons. But my tank is an Alpha Systems VB24637HRCD which shows up as 44.5 gallons. And my flow meter shows I get 45 gallons into it.
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'19 Chevy Colorado Z71 4x4 Crew Cab
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08-12-2019, 03:42 PM
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#12
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Senior Member
Join Date: Nov 2015
Location: Pleasant Gap, PA
Posts: 458
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Mine was advertised at "30 gallons" but only holds 22. The manufacturer reserves the right to change specifications at any time.
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2015 Solaire 201SS
2015 GMC 2500HD Duramax
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08-12-2019, 04:12 PM
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#13
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Senior Member
Join Date: May 2017
Location: Southeast
Posts: 1,047
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I found my actual FW tank capacity listed must include a full HW heater and water in the lines. When folks talk about capacity of a tank... There are two figures... what you can get in it and what you are able to use out of it!
Same on small aircraft... there is capacity of fuel tanks and then actual useable fuel... usually printed by the tank filler and in the manual.
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2018 Forest River Rockwood Roo
24WS
2019 Ford SD F-350 SRW Lariat
Tow & Gooseneck Prep
FX4 Off Road (4X4)
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08-12-2019, 05:05 PM
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#14
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Senior Member
Join Date: Jul 2017
Location: Shelby, NC
Posts: 114
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I went through the same thing with my 2018 8328BS SUL TT. Freshwater capacity in the brochure is listed as 43 gallons. Keyword is “capacity.” I even dropped the Coroplast and measured the dimensions of the freshwater tank, which calculated out to 37 gallons. So with my 6 gallons in my water heater + a 37 gallon capacity in my freshwater tank, 43 gallons it is. I recently drained the freshwater tank completely, and verified it, then using my in-line water meter set for US gallons, I was able to get 36.9 gallons into the tank before any overflow.
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2015 RAM 3500 Cummins LB 4x4
2018 Rockwood Signature Ultra Lite 8328BS
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08-12-2019, 05:15 PM
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#15
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Part-Time Campground Host
Join Date: Jul 2019
Location: Upstate NY
Posts: 3,186
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Quote:
Originally Posted by OldJarHead
I went through the same thing with my 2018 8328BS SUL TT. Freshwater capacity in the brochure is listed as 43 gallons. Keyword is “capacity.” I even dropped the Coroplast and measured the dimensions of the freshwater tank, which calculated out to 37 gallons. So with my 6 gallons in my water heater + a 37 gallon capacity in my freshwater tank, 43 gallons it is. I recently drained the freshwater tank completely, and verified it, then using my in-line water meter set for US gallons, I was able to get 36.9 gallons into the tank before any overflow.
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Same with our 2902WS. I was a little surprised!
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Craig & Cath
2018 2902WS Rockwood Ultra Lite (with tons of Mods)
2022 F250 Lariat Super Cab, 7.3 gas w/10 Spd Xmsn
Equalizer Hitch w/4-Point Sway Control
Days camped since 2015(retirement): 1680
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08-12-2019, 05:44 PM
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#16
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Happy Keystone Owner
Join Date: Feb 2013
Posts: 636
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I used one of these to move the pickup and drain line to the bottom of the tank from the side.
It extended my usable water from the end of the second day to mid morning if the 4th.
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2014-47,
Years camping....55
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08-12-2019, 11:53 PM
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#17
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Member
Join Date: Aug 2017
Posts: 80
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Thanks to everyone. I will check out my build date as well as the weight sticker.
__________________
2017 RW 2304DS
2011 Expedition w/HD tow package
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08-12-2019, 11:58 PM
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#18
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Junior Member
Join Date: Jun 2019
Posts: 21
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If you can access the tank filler neck which is usually behind cabinetry or some other obstruction check the 1/2” vinyl breather hose. There often get kinked causing fill issues.
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08-13-2019, 01:54 PM
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#19
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Senior Member
Join Date: Jul 2017
Location: California
Posts: 7,616
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If you can see the tank, just measure the outside dimensions of it. That will get you really close.
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08-15-2019, 07:00 AM
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#20
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Member
Join Date: Mar 2017
Location: Florida
Posts: 59
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I have a rockwood 5er 2888ws. Does anyone know where the fresh water tank drain is located. I had to power fill as the camp ground had to shut down the water. We will be heading out tomorrow and would like to empty the fresh water
Thanks in advance
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