If you have a leaky American Standard shower faucet, you may need to replace the cartridge. Here's how:
1. Shut off the water supply to your shower.
2. Remove the handle of your shower faucet. This will expose the cartridge.
3. Use a cartridge puller tool to remove the old cartridge from the housing. You may also need to use a pliers to loosen the retaining nut before removing the old cartridge. If you don't have a cartridge puller tool, you can carefully pry out the old cartridge with a screwdriver or another sharp object being careful not to damage the housing in which it sits.
4. Inspect your old cartridge for any damage and replace it with an identical new one if possible. If you cannot find an identical replacement, consult with a plumbing professional or American Standard customer service for guidance on what type of replacement cartridge to use. Be sure to take note of whether your originalcartridge was metal or plastic as this will affect what type of replacement you can use..5 Insert your new cartridges into the housing making sure it is properly seated and orientated according to any instructions that came with it..6 Reattach your