- 1). Turn off the water supply to the shower. A shutoff valve is normally located on a wall opposite of the shower pipe. Some models do not have shutoff valves, so the water supply running to the home must be turned off instead. This is located outside normally in the front yard.
- 2). Wrap a rag around the shower arm and use a pipe wrench or a channel locks to grab the arm. Clamp it down tightly and remove the shower head from the arm. Some shower heads will not be able to be removed from the arm.
- 3). Turn the wrench counterclockwise while firmly gripping the shower arm. Hard water or mineral deposits may have frozen the arm in place, if so, spray the arm joint with a lubricant such as WD40 or try soaking it with vinegar for a few minutes.
- 4). Turn the wrench and arm until the arm comes off of the wall. You may take the time to clean any rust or debris away from the arm joint before installing the new arm.
- 5). Attach the new arm to the wall joint and begin turning clockwise. You can use your hand to tighten it at first. Use the wrench in the same manner as before to tighten it further.
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