Charlie,
Sorry I missed you as you went right by. Could have had you stop by and maybe helped you out.
All the tanks need to be drained and then I would replace the air desiccant filter. It is a spin off, spin on filter and is located in the back of the left rear wheel well.
Tanks #1 & 2 can be reached without raising and going under the coach. NOTE: Not all Newells of our vintage have the air tank I have in the first bay on the passenger side which I call #1.
Tanks #3,4,5,6,7 & 8 all Newells of our vintage will have. All of these tanks have to be accessed from under the coach. Raise the coach using the HWH raise function, then BLOCK the coach up in the raised position BEFORE going under the coach. Then locate each tank & drain. Their locations are laid out in post #11.
There is a 9th tank that I just remembered that is round & located just in front of the transmission. It doesn't have a petcock, it just has a needle valve for draining.
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Steve
Newell
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