The operating parts inside a tub faucet are similar to those in a sink faucet, and the repairs are the same, too. The problem is that parts for some tub faucets are recessed behind tile or a tub/shower wall wrap-around that will need to be removed. Does this Spark an idea?
Washerless and Compression Tub Faucets
A leaking washerless faucet needs internal parts cleaned or replaced. This could include O-rings, springs or the cartridge. You might have to unscrew the tub-shower diverter before proceeding with repairs.
A compression faucet has parts that are aligned in the same order as found in a sink faucet. The bonnet nut might need to be removed to clean or replace parts, which include O-rings and washers.
Tub-Shower Diverter
The diverter valve switches water from the tub spout to a shower head. One kind is built into the spout and has a knob that, when pulled up, raises a gate and diverts water to the shower head. This valve cannot be repaired. Once damaged, the entire spout must be replaced.
A diverter valve that is separate from a tub spout works similarly to a compression faucet. Turn a handle clockwise to move a stem into the valve seat. This diverts water to the shower head. A counterclockwise turn reopens the passage to the spout.
If a tub faucet drips while the water flows through the shower head, replace worn washers, O-rings and packing by following the same procedure for a compression faucet. If drips still occur, the valve needs to be replaced.
Bonnet Nut
Create enough space through the wall to insert a deep socket wrench. This only can be done by using a hammer and chisel to remove tile or pry away and remove the fiberglass bath/shower wall wrap-around. Slip the wrench over the bonnet nut and turn it counterclockwise to loosen the nut. Once the repair is completed, tighten the nut and repair the wall.
Tags: shower head, compression faucet, diverter valve, diverts water, diverts water shower, faucet drips, from spout