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Old 05-09-2016, 02:00 PM   #1
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2016 Thunderbolt 420 amp Black tank flush with bath and 1/2

Just used the black tank flush for the first time in my 16 Thunderbolt 420 amp. Does anyone know if the Black Tank Flush flushes both tanks or just one. My finding was it was only flushing the master bath tank. Just wondering if this is how it is supposed to be or the half bath flush is failing? Thanks
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Old 05-09-2016, 11:40 PM   #2
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I have a 415 and my black flush for the 1/2 bath is on the outside body by the 1/2 bath. The technician did act surprised that FR is now installing them. It sounded as if it was a new feature. It may depend on when your 420 was built for the 2016 model


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Old 09-08-2016, 12:29 PM   #3
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Quote:
Originally Posted by VICSXLR View Post
Just used the black tank flush for the first time in my 16 Thunderbolt 420 amp. Does anyone know if the Black Tank Flush flushes both tanks or just one. My finding was it was only flushing the master bath tank. Just wondering if this is how it is supposed to be or the half bath flush is failing? Thanks
My 420amp has the garage bathroom black tank flush on the side of the trailer above the rear sewer connection.

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Old 10-30-2016, 07:04 PM   #4
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Flush is tank specific.
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Old 11-05-2016, 10:14 PM   #5
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My 420 does not have a flush on the rear 1/2 bath.
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Old 11-06-2016, 04:20 PM   #6
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I have the 340amp 2016 XLR Thunderbolt 40ft. The Black Tank Flush is only for the Black water tank. I will tell you when we bought our an I got to use it for the first time it did not work. Of course carried back to dealer only to find out the vent was on backwards. After fixing it worked fine. Even with the flush system I'm still doing it the old way of dumping then refilling and flushing again then using the flush system.



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