Leaks are often caused by a scratched o-ring or grommet on the cartridge. On models that use a handle mechanism, a broken part could also be the cause. Solution
1.Replace the cartridge (on one-handle models) or cartridges (on two-handle models). It is essential that the model of the unit be identified to ensure you are replacing the proper cartridge.
2.If the faucet uses a handle mechanism, inspect the parts. If one of these items is broken, the handle mechanism will need to be replaced. Note: Improper installation of the handle mechanism can also cause this to occur.
My Quick Connect leaks at the fitting. How can I fix that?
You need to push the fitting up over the nipple a little harder (you should hear a distinct "snap" or "click"). If you push it on gently, you might hear a slight click, but you haven't quite compressed the o-ring into the housing of the hose. One more push should solve the problem.
What do I do about water dripping from the spout of my two-handle tub/shower faucet?
First, we need to find out if the hot or cold valve is causing the leak. Let's begin by troubleshooting with the hot valve:
Shut off the hot water supply. If you can't find the shut-off for your tub/shower valve, shut off the water to your house by using your water shut-off valve.
Remove the faucet handle. Depending on your handle type, you will need a Phillips screwdriver or an Allen wrench to do this.
Remove the chrome bonnet nut using an adjusting wrench.
Remove stem extender.
Remove stem assembly by pulling straight out.
Remove the extender and stem assembly.
Remove the seats and springs.
Examine them for wear or debris and wipe out any debris in the depression where the seats and springs sit in the valve body.
Replace the seats and springs
Reassemble the faucet to see if the drip has stopped.
If the drip persists, repeat the above steps on the cold valve.
If you've replaced the seats and springs and the problem continues, replace both stem assemblies.
If all of the above has not fixed your leak, and your valve is more than 10 or 15 years old, it is possible that the actual faucet body may have developed a leak. If so, you will need to replace your tub/shower valve with a new one.
Note: Consumer safety is our number one concern. If you do not have experience with plumbing repairs, we recommend that you contact a licensed plumber for tub/shower repairs.