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08-06-2019, 02:58 PM
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#1
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Established Member
Join Date: Nov 2017
Location: Boyertown
Posts: 28
M.O.C. #20825
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320 series Dometic toilet
I have a 2014 Montana mountaineer I was just wondering if anybody has ever switched up and put a 320 series in the Rig. Any input would be appreciated
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08-06-2019, 03:38 PM
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#2
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Site Team
Join Date: Oct 2005
Location: Carmichael - CA
Posts: 7,359
M.O.C. #4831
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Specifying the RV's year and model will help getting the correct answer.
__________________
Carl (n Susan)
There is more to life than fuel mileage.
2012 Montana 3700RL Big Sky Package towed by a 2015 Ford F350 6.7L PSD 4WD CC LWB
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08-06-2019, 05:07 PM
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#3
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Established Member
Join Date: Nov 2017
Location: Boyertown
Posts: 28
M.O.C. #20825
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2014 Montana mountaineer 29 RKD
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08-06-2019, 06:33 PM
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#4
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Site Team
Join Date: Jun 2011
Location: Wilsey
Posts: 18,799
M.O.C. #11455
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You'll need to measure. On our 3665RE the 320 was too long, but the 310 was perfect.
__________________
Dick, Joyce, Diego, Picatso and Gustav
2017 3720 RL, and 2013 HC 343RL
Pullrite Hitch, IS, Disk Brakes, 3rd AC, Winegard Traveler, Bathroom door mod, Dometic 320, couch for desk swap, replaced chairs, sun screens, added awnings, etc.
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08-06-2019, 09:16 PM
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#5
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Montana Master
Join Date: Apr 2006
Location: Mesa az
Posts: 2,945
M.O.C. #5651
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I have a 2013 Mountaineer model 362. I installed a Dometic 320 and it dropped right in. I added a shutoff valve and used a stick/brick flexible metal connector to attach water line. Used pex shark bite connector. Was easy and works great.
And if memory serves, the website has a diagram that shows dimensions in every direction, so you can figure out if it will fit.
__________________
Tom and Gail
2013 Mountaineer 362
2012 Silverado 2500
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08-07-2019, 05:42 AM
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#6
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Montana Master
Join Date: Aug 2012
Location: Northport
Posts: 624
M.O.C. #12724
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I did almost exactly as Twindman but didn't use flexible tubing. I used hard pex. My rig 2013 Mountaineer 358 RLT. The fit was perfect and we love it.
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Paul Northport,AL W4XH
2013 358 RLT Mountaineer
2008 Silverado Duramax
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08-08-2019, 09:17 AM
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#7
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Montana Master
Join Date: Sep 2014
Location: Full Timer In Naples, Florida
Posts: 1,049
M.O.C. #15731
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2014, 331 RLT we went with the 320, its a little longer bowl but we had the room.
__________________
2017, 3500 Ram Big Horn, 4x4, Crew Cab, DRW, Aisin Transmission, 4:10. Curt Q20, 2014 Mountaineer 331 RLT, Sailun's on the rv and truck.
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08-09-2019, 05:30 AM
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#8
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Established Member
Join Date: Nov 2017
Location: Boyertown
Posts: 28
M.O.C. #20825
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Thank you have a good day
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08-14-2019, 02:16 PM
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#9
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Montana Fan
Join Date: Feb 2012
Location: Elkhart Lake
Posts: 141
M.O.C. #12256
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Assume from the above you've made the exchange. For those who haven't, it's relatively easy to do. I replaced mine before having problems with the Thetford, as many do. It's much easier replacing the toilet in an RV than it is a residential toilet. The 320 Dometic's are longer (22 inches) Thetford's (19 inches), largely because the 320 is oval in shape. That rarely creates sufficient intrusion into the walking area, because 2 inches are added to the rear of the toilet, only one inch to the front. The floor bolts attaching your toilet are industry standard 12 inches from the wall. The Thetford toilet normally sits farther from the wall, (unused inefficient space). Just another reason why I don't like them.
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08-14-2019, 02:25 PM
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#10
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Montana Master
Join Date: Jun 2017
Location: POINTBLANK
Posts: 1,887
M.O.C. #19944
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just changed mine - only took three shots to get it on the bolts
__________________
 RAM 22' DRW 3500 Crew LB 40 gal reserve tank / RETRAX Bed Cover / 2020 373RD HC / IS / MOPEKA Tank Monitor / Furrion Side&Rear Cameras
Slide Toppers / EMS-HW50C / Sailun 85's
3rd AC / Dometic 320
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08-15-2019, 06:19 AM
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#11
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Montana Master
Join Date: Oct 2017
Location: Bastrop
Posts: 2,892
M.O.C. #20753
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Quote:
Originally Posted by Ram Montana High Country
just changed mine - only took three shots to get it on the bolts
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Use better tequila
__________________
Mocha, one-eyed toothless, hurricane survivor, Pirate dog
2019 20th Anniversary Edition 3701LK
B&W 20K for Ford OEM Puck
2018 Ford F-350 Lariat CCLB PSD DRW KJ5CQH
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08-15-2019, 07:17 AM
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#12
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Montana Master
Join Date: Nov 2018
Location: Menifee
Posts: 1,109
M.O.C. #22986
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has anyone put the 320 inside a 3920/21 ? both bathrooms.
__________________
2018 3920fb 2020 GMC Denali 3500 4x4 Duramax, 10 speed Allison. LB SRW, Firestone air bags with Airlift wireless onboard compressor. Anderson Ultimate Hitch. MX4 folding cover. 50gal titan in bed transfer tank. Onan 6500 lp genset installed by me ! Had: 2 HF 3500 Inverters with Parallel Kit
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Linear Mode
