How to repair the seals and o-rings in a single handle lever-type washing machine supply faucet.
Old or damaged washing machine faucets can damage your washing machine, cause the washer to malfunction, or create a situation for extensive water damage. The do it yourselfer can repair a washing machine faucet fairly easily without the help of a plumber. This type of plumbing fixture is located behind or alongside the washing machine and it supplies hot and cold water to the machine with either rubber or metal braided supply hoses. Before you begin making any repairs to your plumbing system, always make sure you have the water shut off to the fixture or the entire house.
Depending on the type of water supply faucet, you may have a one-piece valve with a single handle, sometimes referred to as a “single lever faucet” that controls both the hot and cold water at the same time; or two separate valves that are similar to hose bibbs. This article will discuss how to repair one-piece washing machine valves as repairs for hose bibbs can be viewed here: https://knoji.com/how-to-fix-a-leaking-frostproof-faucet/
Two-piece Washing Machine Faucet
As a note it is possible that these types of valves can be damaged during the installation if the O-rings or seals are not removed prior to soldering the faucet to the copper supply lines.
Tools and Materials
Bucket or pail
O-rings or washing machine faucet repair kit
Single-Lever Washing Machine Faucet Schematic
1. Turn off the main shut off valve for your home, typically located within a few feet of the water meter.
2. Turn off the controls for the washing machine and unplug the washing machine or shut off the power at the electrical panel. If the washer is in front of the faucet, move the unit out of the way. You may need help moving the machine to prevent damage to the floor.
3. Shut off the washing machine faucet by pushing the lever handle back away from the outlet.
4. Place a bucket or pail beneath the faucet to catch any water. With a pair of pliers, loosen the hose fittings from the faucet and drain the water into the bucket.
5. Remove O-rings and screws from the hose adapters.
6. Move the lever to ON position and unscrew from the spindle.
7. Use 3/8-in. (10mm) Allen wrench to remove hose adapters and remove bottom Teflon discs. This allows removal of the balls from the spindle by shaking slightly.
8. Insert a pencil through rear of valve to pry upper Teflon discs loose.
9. To replace spindle O-rings, use ¼-in. (8mm) Allen wrench to remove the side plug.
10. Reassemble by replacing all seals in reverse order. Tighten adapters securely to avoid leakage.
11. Reconnect the washing machine hose and secure the coupling with a pair of pliers by tightening it clockwise. Keep the washing machine faucet OFF.
12. Turn on the main water supply.
13. Restore power to the washing machine. Turn on the washing machine supply faucet.
14. Run a short test load. Watch the washing machine faucet and hose for leaks. Tighten any nuts or couplings if necessary.
Check the faucet body and hose connection threads for damage. The faucet should be replaced if cracks are present or if the threads are stripped on the hose adapter.