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05-08-2019, 11:03 AM
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#1
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Montana Master
Join Date: Nov 2015
Location: Arlington
Posts: 1,522
M.O.C. #18081
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Water tank support
Can anyone tell me how the water tanks are installed in the Montana’s? Are the cross members between the frame irons a top the corroplast the only thing supporting the water tank and it’s weight?
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05-08-2019, 11:16 AM
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#2
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Montana Fan
Join Date: Apr 2011
Location: Castle Rock
Posts: 248
M.O.C. #11369
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Most have straps under/around to hold them up. Plus maybe cross members.
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05-08-2019, 11:21 AM
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#3
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Montana Master
Join Date: Nov 2005
Location: Paola
Posts: 5,739
M.O.C. #4961
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There are 3 straps that support the tank. The two angle supports are there to support the tank if the straps break.
__________________
Dennis & Linda Ward
Paola, Kansas
Montana 3735MK Legacy Edition
1200 watts of Solar
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05-08-2019, 11:36 AM
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#4
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Montana Master
Join Date: Nov 2015
Location: Arlington
Posts: 1,522
M.O.C. #18081
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Thanks. I am assuming that the spray insulation surrounds the tank as well. I am going to have a hitch fabricated and installed and possibly install a power cord reel as well. I am going to start taking the nails out tomorrow.
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05-08-2019, 02:10 PM
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#5
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Montana Master
Join Date: Nov 2005
Location: Paola
Posts: 5,739
M.O.C. #4961
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There are no insulation around the tank. They put foam around the drain.
__________________
Dennis & Linda Ward
Paola, Kansas
Montana 3735MK Legacy Edition
1200 watts of Solar
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05-08-2019, 07:34 PM
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#6
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Site Team
Join Date: Apr 2017
Location: Colorado Rockies
Posts: 1,921
M.O.C. #19755
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On my unit there are
- two angle iron supports above the coroplast that run between the frame rails and support the long sides of the water tank on the bottom
- three straps above the coroplast running between the two angle irons
- below the coroplast, there are two channels that run between the frame rails supporting the bottom of the tank
Here is a thread with some photos.
http://www.montanaowners.com/forums/...ad.php?t=74313
Since the long angle irons are welded to the frame, I think the factory installs the tank from the top before the floor is put in place.
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Scott & Alta
2017 Montana 3160RL, Legacy, Onan 5.5Kw, Solar
2022 F-450 Lariat Ultimate
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05-08-2019, 11:49 PM
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#7
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Montana Master
Join Date: Oct 2012
Location: Box Elder
Posts: 4,700
M.O.C. #12947
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Actually, the construction starts with the frame upside down, and tanks, electric, hydraulic, and anything else that is placed below the floor level is installed, then the coroplast is installed, and the suspension. It is possible that the fresh tank comes in from the top, not real sure about that. Then the entire unit is flipped over and the rest of the build continues.
__________________
Bob & Becky
2012 3402RL
2012 Chevy 2500HD D/A CC 4WD
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05-09-2019, 12:04 AM
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#8
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Montana Master
Join Date: May 2017
Location: new caney
Posts: 1,050
M.O.C. #19873
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Bob, have you done any bracing on your fresh water tank. I know you have on the black and gray and I have also but wondering how hard it is to do the fresh water. Don't dry camp much but don't want to drop the fresh water tank on the road like some have when traveling full.
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05-09-2019, 01:34 AM
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#9
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Montana Master
Join Date: Nov 2005
Location: Paola
Posts: 5,739
M.O.C. #4961
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Texan, on my unit the 2 angle iron that go side to side were too close. If the bands broke it would allow the tank to drop to the ground. What I did was to move the front one about 8 inches to the front. Now it will keep the tank from falling to the ground.
__________________
Dennis & Linda Ward
Paola, Kansas
Montana 3735MK Legacy Edition
1200 watts of Solar
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05-10-2019, 12:15 PM
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#10
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Montana Master
Join Date: Nov 2015
Location: Arlington
Posts: 1,522
M.O.C. #18081
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I thought perhaps the sprayed insulation around the drain filled the cavity... not. Now at least I know there is plenty of clearance from the tank to drill the frame for power cord reel but one modification at a time.
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05-10-2019, 12:35 PM
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#11
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Montana Master
Join Date: Oct 2015
Location: westminster md
Posts: 2,318
M.O.C. #17894
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One of the rails/side to side supports should not be welded in place. It is probably just screwed in place with self taping screws like mine were. Mine only had one screw per side holding the rail on. I added 2 through bolts to each side.
Think about it. If both rails were welded in place, replacing a tank would be a nightmare.
__________________
2018 Chevy 3500 LTZ Dually Diesel 4x4 CCLB
2011 Montana 3455 SA. 6 point level up. Disc brakes. Curt Q24 Hitch. 5 step glow steps
Progressive EMS. Valterra tank valves. Sailun G637 tires. ARP fridge control. All led lighting. Mor Ryde IS
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05-10-2019, 06:19 PM
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#12
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Montana Master
Join Date: May 2017
Location: new caney
Posts: 1,050
M.O.C. #19873
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Quote:
Originally Posted by Mudchief
Texan, on my unit the 2 angle iron that go side to side were too close. If the bands broke it would allow the tank to drop to the ground. What I did was to move the front one about 8 inches to the front. Now it will keep the tank from falling to the ground.
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Thanks Dennis, I think I will tackle that problem. You love dry camping so i know you don't want to lose a tank.
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