Can anyone identify the internal noises associated with a maintenance procedure which was being conducted by the technician? There are several sounds associated with normal components which can be identified. However, a succession of noises are very audible, whereas the technician was performing a maintenance procedure on my vehicle. Starting at around .54 seconds moving further are a succession of noises. Can any identify these noises and what the technician was trying to do?

This is a question posed to those familiar with the aforesaid service procedure.