Remove rear Valid 6 packs valve manifold

[John C]

I need to rebuild Valid  6 packs valve manifold. Just crawled under the coach today and found out the rear back 6 packs manifold is in a very tight place right above the rear air tank. it is impossible to do anything while the tank is there. so I guess have to remove the air tank.

Just want to get the blessing from experts here that removing air tank is the only way to remove the 6 packs manifold.

Any suggestion on how to do that will be greatly appreciated as this is my first time doing it.

Thank you.