Common issue: Problem in the O ring
Potential Solution: A stem screw is used to hold the handle of a faucet in place. This stem screw comprises of a small disc attached to it, known as the O ring. The O ring can become loose, replacing the damaged O ring can fix the dripping faucet, if this is the issue. This problem occurs specifically in cartridge faucets.
Locate the hot and cold water shut-off valves below the sink. Rotate each valve in a clockwise direction to shut the water off to the faucet. Turn the faucet handles to release any water that may be trapped inside the piping.
Slip the slotted end of a screwdriver under the faucet handle’s center pop cap. Pop the cap off with the screwdriver to expose the screw that secures the handle to the valve stem.
Remove the screw at the center of the handle using a Phillips screwdriver. Grasp the handle and pull it straight up to remove it from the valve stem; you may also need to remove decorative caps, caps that are threaded over the spout and the spout itself on ball type valves.
Adjust a wrench or pliers around the base of the valve and rotate it in a counterclockwise direction to loosen it from the faucet body. Pull up on the base if it seems stuck in order to dislodge the valve and O-rings.
Pull the old O-rings off of the valve body and slip the replacements on. Slide the valve back into the faucet body, aligning any tabs or grooves for a proper fit. Tighten the valve using the adjustable wrench or pliers.
Slip the faucet handle back over the valve stem. Align any grooves so that the handle sits correctly on the stem. Insert the screw in the center of the handle and tighten it with the Phillips screwdriver. Pop the cap back on the center of the handle.
Common issue: Loose Parts
Potential Solution: Due to continuous usage, the adjusting ring and packing nuts in the steam screw may become loose, causing leakage near the handle of the faucet. If there is leakage from the handle, either you need to tighten the packing nut or completely replace it.