I can't remember what model I rented. This was quite some time ago so I may not remember all of the steps.
After I threw a track. We opened the grease port and released the tension on the adjuster. Used the bucket to lift that side up a bit. Collapsed the adjuster and worked the track on using the drive sprocket and a pry bar. After centering the track put the plug back in the port, and grease it back into the proper tension. The process took about 20 minutes.