Remove the keys from your trumpet. Twist the key base counter clockwise, and lift out the key.
Remove the key caps, which are located directly underneath the keys that were removed. Twist the key caps counterclockwise to remove them.
Remove the four removable slides from your trumpet to make cleaning every tube easier.
Fill a cup about half-full of rubbing alcohol, which is used to clean the gunk off your trumpet brushes.
Slide your pipe snake into every pipe opening on the trumpet, wiping it off after each plunge. If your trumpet hasn't been cleaned in a while, dark-colored gunk may come out. If this happens, dip your snake brushes in a cup of alcohol and shake vigorously. Run the snake through all of the trumpet until the brush comes off clean. Do this to all slides.
Dip the tip of your valve-cleaning brush in the rubbing alcohol.
Insert your valve-cleaning brush into the key tubing, and vigorously rub back and fourth to remove any gunk in the tubing.
Set you trumpet down, and let it dry for about 10 minutes.
Lubricate all of your slides with valve slide grease, and slide them back into place.
Squeeze some valve oil onto your valves, and re-insert them into their housing.
Wipe down the outside of your trumpet with a silver-polishing cloth to remove all fingerprints and smudges.