How I clean the inside of a Medela Pump in Style breast pump for second hand use

This video shows how I disassemble and clean a second hand (used) Medela Pump in Style breast pump. The procedure is very easy (don't even need tools). Of course you perform this operation AT YOUR OWN RISK - Medela and FDA recommendations say you should buy a new pump and that using a used pump is not safe. The FDA says "the proper cleaning of cleaning and sterilization of breast pumps requires the removal of any fluid that has entered the pumping mechanism itself". I believe the procedure I use achieves this requirement. However, I am not an expert so please use your own judgment.