RESOLVED: Air in fresh water hose

[LibreRT]

The problem turned out to be the intake tube in the fresh water tank. I called Ranger Tug support, and was told the problem had been seen previously. If the bottom end of the tube was cut straight across instead of at an angle, that could cause it to sit flush on the bottom, which could then cause reduced water pressure as well as air being pulled through the connector. I removed the tube and cut the end at an angle, and voila. Problem resolved.

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I bought our 2021 R27 used, and from the beginning, the water pressure has been poor. I got a replacement pump sent out, and while waiting for it to arrive, I noticed a significant improvement in the water pressure when the fresh water tank is low. The new pump arrived and I installed it, but the problem persists. Additionally, I can see air bubbles in the hose leading to the pump. Accessing the water tank in the cave, I was able to see bubbles emerging from the tank fitting that the tank end of the hose is connected to. Even though it didn’t appear faulty, I replaced the barbed hose connector (using plenty of sealant), and there are still air bubbles. I cannot figure out where or how else air could get into the system at the tank. I’d be very grateful for ideas and suggestions!

Dave

 

[Full_O_Fish]

You might want to check the vent hose/fitting to see if it's become clogged. If the vent is not letting the tank breathe then when you have a full tank there is not much air volume meaning when the pump tries to draw water it's effectively trying to suck in and crush the tank and once it gets to a low enough internal pressure it will suck air in through even a water tight hose connection. Once you have a nearly empty tank you have a large amount of air volume which let's the pump pull a vacuum much more effectively meaning you get better water flow until it hits the same pressure value that let's air in through the hose connection.

Easy test is to just open up your deck fill and see if the pump runs well with a full tank, if so then your vent is plugged up and needs some attention.

 

[LibreRT]

Easy test is to just open up your deck fill and see if the pump runs well with a full tank, if so then your vent is plugged up and needs some attention.

Thanks. I tried that, but it had no affect.