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Old 08-17-2019, 11:35 AM   #1
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Join Date: Sep 2017
Location: Glendale, AZ
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2004 Winnebago Water Tank

Friend has a 2004 Winnebago Mini (Class C) 329B with a fresh water tank leak. According to the drawing, it has 2 tanks - one under the dinette seat that flows to an under-floor tank (see drawing). Is there a way to access the under-floor tank short of cutting holes or complete disassembly of the coach? Would appreciate any ideas you might have.
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Old 08-21-2019, 10:53 AM   #2
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That makes for a very tough go at removing the tank but there is also a reason for hope due to the way things work. Reasons for leaks are many but freezing is the one which gets the tank, while freezing and lots of smaller things can get the tubing and fittings that feed the tank, so it pays to assume other leaks before the tank is removed.
fittings are a good place for water to collect and freeze but if freezing is not the real cause, things like loose clamps or tubing which get cut, rubbed or out of place are more common than actual tank failure.
I would start at looking at all the tubing and fittings that I could see first, trying to trace any water back to the source and that may require removing some of the insulation/covering on the bottom but much less than removing the tank.
If you get into any cutting, do it very carefully after checking for wires, plumbing around the cut.
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