Whenever I turn off my CTD, there is a loud squeak of sudden stoppage under the hood. normal?

 

normal belt noise during shutdown due to high compression of diesel and sometimes gets a kickback causing belt to chirp no worries

 

perfect

 

Mine used to squeak when running as well as the chirp when I would shut down. I had the belt and tensioner replaced under warranty. Now it only chirps on shut down once in a blue moon and it doesn't squeak at all while running.