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02-20-2018, 06:53 PM
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#21
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Site Team
Join Date: Apr 2017
Location: Colorado Rockies
Posts: 1,922
M.O.C. #19755
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What is the difference between the Dometic 310 & 320?
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Scott & Alta
2017 Montana 3160RL, Legacy, Onan 5.5Kw, Solar
2022 F-450 Lariat Ultimate
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02-20-2018, 06:54 PM
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#22
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Montana Fan
Join Date: Dec 2014
Location: Traverse City
Posts: 149
M.O.C. #15913
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310 round bowl, 320 elongated
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02-21-2018, 07:21 AM
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#23
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Montana Fan
Join Date: Nov 2010
Location: Northwest Tennessee
Posts: 450
M.O.C. #10884
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Would like to know how many have the Thetford and no problems? We have the Thetford and have our fingers crossed!
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2017 Montana 3611
2012 Chevy 2500
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02-21-2018, 07:27 AM
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#24
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Montana Master
Join Date: Dec 2009
Location: Sebring
Posts: 3,659
M.O.C. #9969
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Our current Thetford is 3 years old and still holding water. The one in our last unit went 2 years before the foot pedal came off, $50 bucks for a new pedal. So when this current one acts up it's into the trash and a Dometic put in it's place.
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Michelle & Ann
2018 Chevy 3500HD High Country DRW 4X4 Crew Cab w/Duramax/Allison, Formally 2010 Montana 2955RL, Now Loaded 2016 SOB, Mor/ryde IS, Disc Brakes & Pin Box, Comfort Ride Hitch, Sailun 17.5 Tires.
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02-21-2018, 07:34 AM
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#25
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Montana Fan
Join Date: Aug 2017
Location: Twin Falls, ID
Posts: 211
M.O.C. #20361
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Ours was 3 yrs old when we bought it, no problems but the 320 is much more (man sized)! Best seat in the house!
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Jim and Barb
Chica and Baby (the fury kids)
2014 3402rl
2017 Ram 3500 6.7 ctd. 4x4 srw
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02-21-2018, 08:14 AM
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#26
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Montana Master
Join Date: May 2017
Location: South East NC
Posts: 1,768
M.O.C. #19865
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My neighbor is a mobile tech. He says Thetford makes more than one model but most builders put the light version in to save weight and $$$. He says the 'lite' version is often seen as a disposable. He said the 320 I installed will generally at most see the valve leak. The valve is a cheap easy fix IF it happens.
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02-21-2018, 09:31 AM
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#27
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Montana Master
Join Date: Sep 2017
Location: Tacoma
Posts: 1,567
M.O.C. #20475
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Are Thetford worked for about 3 mouths and started to leak & not hold water cheep peace of junk! The one in my last fiver did the same thing.
Bob & Carol
Washington St
2017 352RL 2008 Dodge 3500 DRW CC LB 4x4 6.7L
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02-21-2018, 09:47 AM
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#28
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Montana Master
Join Date: Apr 2006
Location: Mesa az
Posts: 2,953
M.O.C. #5651
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I am afraid to comment. We have the original in our Mountaineer and it is 4 years old in July and has 20-35,000 miles on it. Only problem is the valve closes slow, so I lube it up with cooking oil and good to go another several months. Knock on wood.
Say, for those that have had them leak all over, is it the valve sticks open and coninutes to run filling the tank and then the bathroom??? Just curious what to look forward to!!!
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Tom and Gail
2013 Mountaineer 362
2012 Silverado 2500
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02-21-2018, 11:17 AM
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#29
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Montana Master
Join Date: May 2011
Location: Hixson
Posts: 3,436
M.O.C. #11397
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Quote:
Originally Posted by scottz
What is the difference between the Dometic 310 & 320?
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Quote:
Originally Posted by rescue7
310 round bowl, 320 elongated
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The 320 also has a "rim" that the 310 doesn't have.
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2018.5 Montana 3791RD
Full Timers 9/1/2010 through 1/16/2020.
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02-21-2018, 02:48 PM
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#30
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Montana Master
Join Date: Sep 2017
Location: Tacoma
Posts: 1,567
M.O.C. #20475
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On mine Tom it was the vacuum breaker on the back side wear the water goes into the bowl ever time you push the peddle down water would squirt out I replaced it and then it
wouldn't hold water at least we did not have a flood in the rig! Some people have good luck with them and some don't. I like my 320 better more room.
Bob & Carol
Washington St
2017 352RL 2008 Dodge 3500 DRW CC LB 4x4 6.7L
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02-21-2018, 05:18 PM
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#31
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Montana Master
Join Date: Apr 2016
Location: Auburn
Posts: 879
M.O.C. #18474
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Geez, ok, ok just ordered a 320...And I thought all my mods were gonna get me killed by my better half
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2020 Montana 3790RD Legacy EditionOnan, TST TPMS, TrailAir pin, Discs,
2013 F350 DRW 4x4 CC LBViair 10007, Ride-Rites, Westin HDx, 12k Smittybilt
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02-21-2018, 11:10 PM
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#32
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Montana Master
Join Date: May 2017
Location: new caney
Posts: 1,050
M.O.C. #19873
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Your better half will actually like this mod. And don't forget to get the one with the sprayer. Beats using a toothbrush to clean the toilet,lol.
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02-21-2018, 11:31 PM
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#33
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Site Team
Join Date: Apr 2017
Location: Colorado Rockies
Posts: 1,922
M.O.C. #19755
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Quote:
Originally Posted by Texan
Your better half will actually like this mod. And don't forget to get the one with the sprayer. Beats using a toothbrush to clean the toilet,lol.
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Who's toothbrush do you use?
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Scott & Alta
2017 Montana 3160RL, Legacy, Onan 5.5Kw, Solar
2022 F-450 Lariat Ultimate
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02-22-2018, 12:16 AM
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#34
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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 scottz
Who's toothbrush do you use?
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DW's of couse. But be sure to rinse it afterwards, otherwise it would just be gross.
__________________
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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02-22-2018, 10:34 AM
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#35
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Montana Master
Join Date: Apr 2016
Location: Auburn
Posts: 879
M.O.C. #18474
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Quote:
Originally Posted by jeffba
DW's of couse. But be sure to rinse it afterwards, otherwise it would just be gross.
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That's hilarious!
By they way, ordered the one without the sprayer, for one, they didn't have one in stock and two, I can plumb it in very easily. Talked to the guys at PPL and said it was easily added, but ended up buying through Amazon as the return would be so much easier if it is broken when it gets here. I believe it is worth the extra $14. Still enjoying this forum even though it costs me money. But it's a wash because I post mods too
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02-22-2018, 01:48 PM
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#36
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Site Team
Join Date: Apr 2017
Location: Colorado Rockies
Posts: 1,922
M.O.C. #19755
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I ordered one from PPL last night. My wife said to tell you guys to stop it.
(Wait till she sees the bill for the disc brakes; I suspect I'll be living in the Montana)
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Scott & Alta
2017 Montana 3160RL, Legacy, Onan 5.5Kw, Solar
2022 F-450 Lariat Ultimate
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02-22-2018, 02:16 PM
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#37
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Montana Fan
Join Date: Aug 2012
Location: Fowler
Posts: 414
M.O.C. #12748
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It is not how long a Thetford will last, it is how many cycles it will survive. There are many RV's that are only used several weeks per year and a number of them used much more frequently. For the RV's that are seldom used, the original will last them a lifetime but from the information I have gathered from this forum and my own personal experience, I would estimate that about 2 years of use is an average for the original commode.
This forum is a great source of information, much of it is even useful so keep the useful information coming.
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02-22-2018, 08:32 PM
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#38
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Montana Master
Join Date: Apr 2016
Location: Auburn
Posts: 879
M.O.C. #18474
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Ok. Got a hold of Amazon as they had the one with the sprayer in stock as of today and cancelled the order on the first one and ordered the one with the sprayer. Funny, it will be here two days earlier. Actually I'm hoping they did get the order cancelled so that two of them do not show up at my house.
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02-22-2018, 08:34 PM
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#39
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Montana Master
Join Date: Apr 2016
Location: Auburn
Posts: 879
M.O.C. #18474
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Quote:
Originally Posted by scottz
I ordered one from PPL last night. My wife said to tell you guys to stop it.
(Wait till she sees the bill for the disc brakes; I suspect I'll be living in the Montana)
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I've warned mine of the associated cost of the disc brake conversion. If we hadn't already had our son's surgery and my MRIs deductibles paid this year, we would already be stopping quicker
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02-23-2018, 06:19 AM
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#40
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Montana Master
Join Date: May 2011
Location: Hixson
Posts: 3,436
M.O.C. #11397
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Quote:
Originally Posted by Golfmedik
I've warned mine of the associated cost of the disc brake conversion. If we hadn't already had our son's surgery and my MRIs deductibles paid this year, we would already be stopping quicker
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I feel your pain. I just recently had to spend "my disc brake money" on emissions work on my truck.
__________________
2018.5 Montana 3791RD
Full Timers 9/1/2010 through 1/16/2020.
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