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Old 06-14-2018, 06:15 AM   #1
fullabeatz
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Where does this intake go?

I have a (new to me) 2012 Avalanche 341TG. I'm not sure what the intake circled in red is for. A little help?

Does the black tank flush in the blue circle flush both tanks or just the front one?

Thanks!
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Old 06-14-2018, 06:46 AM   #2
JRTJH
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It's probably the port to ingest antifreeze into the trailer plumbing during winterization. Attach a short piece of hose, turn the valve below it to winterize, put the hose into a gallon of antifreeze, turn on the pump and it'll draw the antifreeze into the system.
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Old 06-14-2018, 07:02 AM   #3
notanlines
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It will probably just flush the front tank. A single garden hose would hardly carry the volume/pressure to properly operate two tank flushers.
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