Frozen Shower Arm with Weird Spud Nut

Home Forums Public Forums General Plumbing Frozen Shower Arm with Weird Spud Nut

  • This topic has 3 replies, 3 voices, and was last updated 19 years ago by Avatar photoRetired plbg1.
Viewing 3 reply threads
  • Author
    • #277575
      Avatar photodmac

        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

        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.

      • #296591
        Avatar photoRetired plbg1

          Send apic. It sounds like you have an excusion at the wall and the nut screws against it to hold arm tight, I will wait for pic. Send it to [email protected]

          Art retired plbg

        • #296592
          Avatar photodale h
          • #296593
            Avatar photoRetired plbg1

              Loosen arm first 1 turn and then loosen nut and then take out arm then nut, if it turns in wall then you will have to put 1/2″ nippel and coupling bath to receive arm. Let me know.

              Art retired plbg

          Viewing 3 reply threads
          • You must be logged in to reply to this topic.

          Pin It on Pinterest

          Share This