Things You'll Need
Whether your faucet is on a whirlpool tub or standard tub, fixing the faucet is the same process. If your whirlpool tub faucet leaks, it could lead to fungus or mold growing near the drain. Changing the cartridge usually stops the leak, and it does not take a great deal of time. If you have just a few basic home improvement skills and the will to do it, this project only takes about 30 minutes of your time.
Turn the water valves to the "off" or closed position.
Take the handle to the faucet off by taking out the small screw on top of the handle. This is often covered by a small plastic cap. Simply remove it and access the screw. Note that on some faucets, the screw is located along the side near the base of the handle.
Pull off the handle by hand. Look for either a retaining clip in the side of the faucet head or a nut that secures the cartridge inside of the faucet fixture. Pull the clip out with the tip of a screwdriver or pliers, and loosen the nut with channel-lock pliers.
If there is a second nut or washer, remove this also. Take care to remove any handle adapters and cartridge screws as they apply to your faucet. Consult your owner's manual for precise instructions as applicable.
Remove the cartridge by pulling it out. Use pliers to grasp the stem of the cartridge if it will not pull out by hand. Replace cartridge with a new one from your repair kit.
Assemble the faucet by replacing the washers, cartridge nut and adapters. Reattach the handle, turn on the water and test the faucet.