Originally Posted by Grit dog
Looking at it, I would try putting a big crescent wrench on the manifold (or vice grips if it's not square on the back side. And then you can pull or push against that with the wrench on the fitting.
I was looking on a forrest river forum and someone had posted a photo of his manifold, he stated that those fittings are "fixed connections" In the manifold and that in order to unscrew them you have to take the manifold off and turn manifold. I thought these were swivel connections? If not then unscrewing them would be impossible while on the coach. Any idea? Thanks