Move all valves and slides.
Wash your mouthpiece with lukewarm water and dishwashing liquid.
Wipe old lubricant off your valves/hand slide and re lubricate them. Clean the valve casings/hand slide tubes with a cloth and cleaning rod, then lubricate and reassemble.
Grease tuning slides with tuning slide grease. (Never use Vaseline!)
Bath your instrument. This article explains cleaning your brass instrument very clearly. Although Ultra Pure makes very good lubricants, you can use any good synthetic lubricant from brands like La Tromba, Hetman and Yamaha.
Have your instrument chemically/ultrasonically cleaned. At WindCraft we do this at every service.
• Keep everything clean. The slides, valves, valve casings, bore and finish.
• Never use pliers to try to unstick any moving parts, only hand pressure.