How do u tighten the idler on the power steering pump

Hello,

In order to install or uninstall the power steering pulley, you will need to use a special tool, a power steering pulley puller.
These tools can be rented from your local auto parts store. I attached a picture for your reference.

Here is a helpful guide on how to remove/install the pulley:

https://www.2carpros.com/articles/remove-reinstall-power-steering-pulley

If the pulley is still loose or its lateral movement, you will likely need a new pulley.
It is always a good idea to check the shaft that the pulley mounts on, to make sure it does not have any damage.

I have attached diagrams for your reference.

Please let me know if you have any questions.
Thank you.