I want to replace a shower arm (spout.) Sounds easy right? Well, the house was built in 1977. The shower arm may be as old. It is fitted into a brass collar/socket threaded on the inside and threaded on the outside. On the outside is this old big spud nut, which kind of clamps everything to the shower surround. I have a photo of arm if interested.
I could tear out the shower surround and fit new copper pipe, but I want to avoid this having just painted(epoxyed) the surround. I know I should have attempted removing these trim fittings before I painted, but I didn’t. Oh well.
So now I face the problem of removing these frozen parts. I live in San Diego, and the water is terrible. Scale, minerals, deposits etc. I’ve doused it with CLR, WD40, and LiquidWrench. What’s next, Muriatic Acid?
Plus, I am not sure if I need to remove the spud nut before loosening the arm? Or can the spud nut remain on whilst the arm is loosened?
I’ve never seen this type of spud nut and brass collar for a shower arm before. It seems strange. Was this a typical method in the good old days?
As I said before this could all be rectified if I tore out the surround, but I REALLY want to avoid that for now. And I can’t get access to the plumbing from behind….architecture prevents that. Any help or ideas appreciated. Thanks Dale