Follow along as we remove and then re-install a 10“ power chuck on a Haas ST-30. In addition, we look at the installation of a collet chuck, and also review removing lighter weight 6“ and 8“ chucks, which can be lifted by hand. We also adjust the runout of a manual chuck fitted to a Haas TL-1 Toolroom Lathe, and finish with notes about removing a chuck suffering from a lack of maintenance.