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Old 08-12-2019, 07:53 AM   #1
mikeadams50
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M.O.C. #22629
High Country water tank vent

Need help locating the water tank vent on a 2018 Montana High Country HM380TH
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Old 08-12-2019, 10:04 AM   #2
Theunz
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Don't know about your particular model, but most have a flat black cover apx 2 or 3 inches square on the side of the trailer in the vicinity of the tank drain. The cover will come off by pushing upwards.
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Old 08-12-2019, 11:18 AM   #3
Mikendebbie
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vent

See the black thing that the red arrow points to on my unit...
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Old 08-12-2019, 11:55 AM   #4
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not on mine, thanks
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Old 08-12-2019, 12:14 PM   #5
BuilderBob
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Originally Posted by mikeadams50 View Post
not on mine, thanks
Maybe they forgot to install one. I haven't seen any Montana with out one on the back street side corner.
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Old 08-12-2019, 03:32 PM   #6
dlscott185
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It's on the trailer frame under the kitchen slide. We have the 380th also. I'd like to modify it so it has more resistance to dumping most of the fresh tank on the highway.
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Old 08-12-2019, 06:17 PM   #7
mikeadams50
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are you talking about the Drain on the frame? I can't find the vent.
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Old 08-12-2019, 08:20 PM   #8
Jamesb
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My vent is on the rear next to the 50 amp receptacle.
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Old 08-13-2019, 06:58 PM   #9
mikeadams50
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so I crawled under the unit and directly above the tank drain valve on the frame is the vent, the directions for sanitizing say it is at the back on the roadside wall. little hard to add liquid that way but I've got a hand pump
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Old 08-13-2019, 07:05 PM   #10
dlscott185
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I calculated that we need a cup of bleach for 60gallons. I used a funnel and added it to the fresh hose before filling the tanks. Much easier that way. Make sure the fresh hose is empty, or at least has room for a cup.
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Old 08-18-2019, 04:47 PM   #11
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Maybe they forgot to install one. I haven't seen any Montana with out one on the back street side corner.
On my 3761FL it is near the front as my FW tank is way up there.
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Old 08-19-2019, 05:16 AM   #12
mikeadams50
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found it UNDER the camper just above the drain valve on the side of the tank
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