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Old 09-04-2015, 08:22 PM   #1
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Fresh Water Tank Loose

Decided to flush my fresh water tank today and when removing the drain plug discovered the tank is loose.

I see some perimeter nuts that look like they are attached to some all thread so am guessing these need to be tightened.

Anybody know for sure / have tightened their tank?
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Old 09-04-2015, 09:45 PM   #2
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I just snugged up the 6 bolts holding the fresh water tank in a sort of cradle. Don't over tighten as there isn't a limit on how much you could tighten, would just end up squeezing and potentially reshaping your tank.
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Old 09-05-2015, 12:34 PM   #3
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Could the loosening be a result of towing or putting it on the flatbed ? If so, you might check other items under that low slung chassis. Hope you find no problems and thanks for the heads-up.
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Old 09-05-2015, 02:12 PM   #4
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Decided to flush my fresh water tank today and when removing the drain plug discovered the tank is loose.

I see some perimeter nuts that look like they are attached to some all thread so am guessing these need to be tightened.

Anybody know for sure / have tightened their tank?
Vibration causes bolts to loosen.

Check all those things that can cause those vibrations.

The running gear, must be balanced, to start with.

Andy
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Old 09-05-2015, 06:13 PM   #5
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I think stuff just vibrates loose as it can on any vehicle.

I just wish I had a big enough lift or a big hole in the ground so That I could check things out more often.
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Old 09-06-2015, 09:25 PM   #6
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How about using a nut with a nylon locking feature.
Could that eliminate a recurring problem and ease your mind.
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Old 09-06-2015, 10:31 PM   #7
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How about using a nut with a nylon locking feature.
Could that eliminate a recurring problem and ease your mind.
Nylon nuts are certainly very useful.

But, when vibration is the cause of the issue, then attention should be directed to it's "fix".

If not, then many other things can and will happen, that sometimes cause "big bucks" to correct.

Andy
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Old 09-06-2015, 11:06 PM   #8
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How about using a nut with a nylon locking feature.
Could that eliminate a recurring problem and ease your mind.
That's not a bad idea or I could just double nut them since they will probably jiggle loose again.
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Old 09-07-2015, 12:30 AM   #9
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Double nuts will lock, but will not he as strong as a Nylock nut in stainless steel...and double nuts are a pain when they rust and then need to be taken off in the future. It takes two wrenches to get them off, plus a set of locking pliers to hold the all thread. Don't ask how I know this 😀


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Old 09-07-2015, 01:29 AM   #10
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You could also use something like Loctite thread locking fluid. The blue is temp/removable. The red is more permanent. I use it all the time. Also noticed that all those nuts holding tanks and other things under my van are nylon-nuts.


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Old 09-07-2015, 01:51 AM   #11
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Quote:
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Vibration causes bolts to loosen.

Check all those things that can cause those vibrations.

The running gear, must be balanced, to start with.

Andy
Uh - Andy, it's an INTERSTATE... not a trailer.
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Old 09-07-2015, 07:06 AM   #12
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Clear tank

Hi all ,just watered up our 28 ' 1978 ambassador for first run to cape cod. I was cleaning clear tank (just because) knowing we are using water hook up . So question is how involve is to change tank next spring? Thanks to all
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Old 09-07-2015, 12:09 PM   #13
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Uh - Andy, it's an INTERSTATE... not a trailer.
Those need balancing as well.

Some folks think that heavy duty vehicles are immune to balancing.

Andy
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