How to replace the harmonic balancer and install?

The easiest way to do this is to use an air impact gun. Here is a video that shows this:

https://youtu.be/NZIMNkLxCMA

If you don't have one then just use a strap wrench to put around the pulley. Some people try to wedge something in the pulley but that always makes me nervous.

Here is another guide that may help:

https://www.2carpros.com/articles/how-a-harmonic-balancer-works

Let us know if this does not work and we can come up with other ideas. Thanks