Moen bath diverter spouts come in two types. The first, IPS (iron pipe size), is threaded and screws onto a ½-inch pipe in the wall. The second type slides onto the pipe and is secured by a set screw. When the diverter stopper is pulled up, the water is diverted from the spout to the shower head. The Moen tub spout diverter needs replacing when the water does not divert to the shower head or the water leaks out of the tub spout after you pull up the diverter stopper.
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Things you need
- Allen wrench
- Tape measure
- Teflon tape
- Water pump pliers
- Masking tape
- Replacement diverter spout
Remove the diverter spout. Check under the tub spout for a hex screw. Use an Allen wrench to unscrew and remove the hex screw. Pull the tub spout straight out to remove it. If you don't find a screw underneath the spout, it is an IPS threaded spout that unscrews. Insert a screwdriver into the open end of the tub spout to use as leverage to loosen the spout. Use the screwdriver to turn the spout counterclockwise until it is loose enough to unscrew by hand.
Use a tape measure to measure the length of the connection pipe (that holds the spout) from the wall surface and write it down. Some tub spouts have the threads in the nose of the spout and some threads are set in the back of the spout. This is why the connection pipe is either about 6 inches long or barely protrudes from the wall.
Install the set screw replacement tub spout by sliding it on to the pipe. Insert the set screw and use an Allen wrench to tighten the set screw underneath the tub spout.
Install the threaded replacement tub spout by wrapping the threads on the connection pipe with Teflon tape. Screw the tub spout onto the connection pipe by rotating the diverter tub spout clockwise.
Use water pump pliers to grab the nozzle end of the tub spout and turn clockwise to tighten.
Tips and warnings
- Wrap the tips of the pliers with masking tape before using the pliers to tighten the new diverter spout to avoid scratching or damaging it. Not all spouts are made the same. After removing the spout take it and the connection pipe measurement to the hardware or home improvement store to buy a replacement.
- If there is caulking around the back of the spout use a razor knife to slice the caulking around the entire spout base. Do not over-tighten the tub spout to avoid damage to your shower.
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