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To rebuild a leaking sillcock, the first thing to do is shut off the water at an isolating valve or the main.
Remove the bonnet collar nut at the base of the stem handle (Image 1) and slide it up the stem.
Then, grab the handle and turn it counter-clockwise. This unscrews the stem from the body.
Remove the screw and the broken or worn out packing washer at the base of the stem (Image 2).
Match up an appropriate washer and a new screw; install them at the base of the stem.
Screw the stem into the faucet body and retighten the packing nut.
With the sillcock in the off position, turn the water main back on and check for leaks.
Tip: Use an aerator to save water when using a kitchen faucet.
Check the water meter activity to ensure that all the leaks are corrected.
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