I hope this helps.
Step
11Turn off the water supply. You'll find a shut-off valve under your
kitchen sink. Once the water is turned off, open up the kitchen faucets to allow the water remaining in the pipes to drain way.
Step
2Catch the drips by placing a bucket under the hot water supply line, located on the left side of your sink. Even a minimum of water can cause a mess and be potentially damaging.
Step
3Use a wrench to remove the compression nut that secures the hot water supply line. Let the disconnected section fall into the bucket. Use the wrench to loosen and remove the nut at the other end of the line and remove it as well.
Step
4Repeat Steps 2 and 3 for the cold water supply line.
Step
5Replace the cold water supply line. Hand-tighten the nuts on both ends, then use the wrench to tighten the nuts completely. Repeat the process with the hot water supply line.
Step
6Turn on the water supply and test for leaks