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Old 09-07-2015, 12:03 PM   #1
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Join Date: Aug 2014
Location: new jersey
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flush line clogged

When I try to flush the black water tank using the outside flush line it is clogged. Can anyone tell me how to unclog the outside flush line for the holding tanks. I have a 31 foot 2013 3170DS.

It appears that the clog is inside the line near or in the tank

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Old 09-07-2015, 12:12 PM   #2
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Join Date: Mar 2015
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check to see if the check valve on the black tank shower line is installed backwards. that is what happened on my last TT.

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Old 09-07-2015, 12:25 PM   #3
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You could also Have a kink in the line. FR is to lazy to cut a hose lay properly, hate to say it, but I have so much extra hose in that underbelly they could have built another unit.
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Old 09-07-2015, 12:33 PM   #4
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Should look like this.
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