0:40 - Tools
1:59 - Removing front lens elements
5:52 - Cleaning front lens elements
7:57 - Removing rear lens elements
9:46 - Cleaning rear lens elements
11:45 - Declicking the Aperture (optional)
15:25 - Assembling rear Aperture adjustment plate (WARNING - this is super tricky and can take a lot of tries to get it right. Make sure you push on the button on the side of the lens to be able to rotate and align two red dots together.)