Adjustable arm has become loose, shower arm not staying up

How to install Waterpik shower head

Most likely problem is the brake light switch is broken or out of adjustment. The switch is located under the dash on the arm lever of the brake pedal. When the pedal is at rest, the arm presses the switch in and turns off the lights. If the switch gets loose, broken, or out of adjustment, it may not close and allow the lights to stay on constantly.

Wrap the threads with Teflon tape and tighten the head on with an adjustable wrench.

At a guess either the shower head has become clogged/calcified or the piping inside the shower has become so.

This means that water stays in the system too long, becomes over heated and the failsafe cut off activates.

Try cleaning or replacing the shower head.

There are numerous chooses here are a few of them.
http://www.nextag.com/adjustable-arm-shower/stores-html

The shower arm should be screwed into an elbow inside the wall. Unscrew the shower arm by putting your pipe wrench on the arm and unscrewing in a counter clockwise direction ( lefty loosey, righty tighty ) . Measure the length of the arm going inside the wall and make sure your replacement has enough length to reach. Teflon tape the inside end ( the end going in the wall ) and wrap a rag around the new arm, then screw into the elbow going clock wise , stopping when it starts getting tight and with the bend facing downward. Install shower head.

This usually means removing part of your wall,and extending your pipe ,but if you don't want to do that ,I believe home depot,sells a shower arm that adjustable ,to raise or lower the head

you have to take the handle off
there should be an insert that you can adjust by pulling out and turning

The best way is to cut a hole in the wall and fix it right. That will entail replacing the surface material, probably sheetrock. You could try some silicone sealant around the shower arm behind the eschusion. It will still move, but not much.

can you at all shorten the length of the arm to make the head lighter or can you do the adjustment near the tiles up tighter apart from this attach unsightly bracket from the head back to the wall at worst mate start pulling tiles off ouch ! wish i could more help glenn..