Joe,

Thanks for the reply. It took a little searching, but I found an old post of your showing a picture of the valves on an older coach. Referencing one of your old posts, I was able to find the two valves to turn off. The two valves are attached to the lines that go straight up and then take a 90 degree turn to the front going into the coach. Everything worked fine after this. It was, as everything is, a learning experience. Once the valves were shut off, all was fine.


The OTR air worked fine after this and the coach stayed cooler longer on stops. Also, no more over heating water tank. With the solar setup I have, heating the water tank is not an issue so I do not need to heat it with coolant while driving.

Thank you for the input on the filter for the OTR air system, I’ll have to find and check this. The dash air has been working good.

Re the Webasto, I used it briefly last winter but found it was going through Diesel to fast for my liking so opted to use a couple of Dyson space heaters. I’ll fire it up again this winter and run a bit. Hopefully once a year will be enough to keep it from turning to stone.