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Steverino · 08-23-2021, 06:10 PM

Okay, so this is probably a long shot, but...

Our Georgetown has developed a leak when the black tank flush is pressurized (the leak is clean water, not black). On this rig, the flush connection is in the wet bay on the driver's side, but evidently the pipe goes to the other (passenger) side, and then up out of sight above the water heater bay. The leak comes down into the water heater bay and then drains out.

I have thought of two possible causes:
1. Possibly the (cheap plastic) vacuum breaker has failed and it is located somewhere up there. Our previous Forest River trailer had that problem when it was very new. I replaced the unit with a better quality brass one.
2. Possibly the flush line retained some fresh water over winter and froze / cracked.

I assume the rig does have a vacuum breaker - does anyone know where it might be located and how I could access it? Based on my initial investigation, getting up into wherever that leak is will be very, very difficult - if not impossible.

Thanks in advance for any suggestions!

lisaz · 09-26-2021, 05:24 PM

I've only seen or heard of the black tank flush vacuum breaker being under the bathroom vanity behind the sink. We never flush our tank without eyes on it, just in case.
You may see two flexible water lines going up the side inside the vanity to the breaker.

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Steverino · 09-26-2021, 05:52 PM

Quote:

Originally Posted by lisaz

I've only seen or heard of the black tank flush vacuum breaker being under the bathroom vanity behind the sink. We never flush our tank without eyes on it, just in case.
You may see two flexible water lines going up the side inside the vanity to the breaker.

Hey thanks! I will definitely take a look when I'm winterizing later this month. There's a removable panel at the bottom of the vanity - maybe it is back there...

Steverino · 10-17-2021, 08:55 AM

Finally had a chance to investigate further. Vacuum breaker is located under the kitchen sink.
The compartment under the bathroom sink has an heating duct, 12v wiring and 110v wiring. There are also two 12v relays who are not labeled of course. No idea what they do. (I HATE that manufacturers do such a poor job - no job actually - of providing useful electrical system info.)

So my flusher leak is either a loose fitting or cracked part. And I can’t get to it without either removing the water heater or cutting open the basement compartment.