Step 2 · Disconnect Plumbing Connections
First, locate the flexible, ribbed dishwasher drain hose connected to the large inlet nipple on the side of the garbage disposal. Use a flathead screwdriver or a 5/16" nut driver to loosen the metal hose clamp securing it. Wiggle the hose off the nipple and immediately direct the open end into your bucket to drain any water. Next, identify the large slip nuts that connect the P-trap assembly to the disposal's discharge tube and the drainpipe coming from the wall. Using a pair of channel-lock pliers, turn these nuts counter-clockwise to loosen them. They may be tight initially. Once broken loose, you should be able to finish unscrewing them by hand. Carefully lower the P-trap, emptying its water content into the bucket.