If your faucet leaks out of the spout when it s turned off the washer is bad.
Frost free outdoor faucet repair.
On frost proof faucets the washer is located on the end of the long faucet stem.
Remove the nut then reattach the handle and use it to pull the valve stem straight out.
If your faucet still leaks the stem may be leaking and you should replace the faucet.
Another place a frost proof faucet can leak is from the anti siphon portion of the valve if the faucet has one.
Remove the faucet packing nut by turning it counterclockwise with an adjustable wrench.
This component can go bad with use and to repair it you will most likely need a new anti siphon rebuild kit that is brand specific to your faucet.
The packing nut is located directly behind the handle and has six flat sides to facilitate removal with a wrench.
Simmons 850sb repair kit 8 pieces for use with 4800 model and 800sb series yard hydrant.