iFixit

With the iPod opening tool, gently lift the brown tab of the headphone ribbon cable connector. The tab will rotate up 90 degrees, releasing the ribbon cable.

Using your fingers, pull out the headphone jack ribbon cable.

The front and back of the iPod should now be completely separated.

Use a small iPod opening tool to release the black hinge holding the hard drive ribbon cable. The tab will rotate up 90 degrees towards the logic board, releasing the ribbon cable.

Use your forefinger to hold the ribbon cable in place; disconnect the drive from the ribbon cable.

Make sure the hard drive rubber side bumpers are attached to the drive being installed. Use the hard drive rubber side bumper installation guide to accomplish this task.

If necessary, the blue foam padding on the hard drive might also need to be transferred to the replacement drive.

Remove the three black Phillips screws securing the front panel to the metal framework.

Rotate the iPod laterally 180 degrees and remove the three black Phillips screws securing the front panel to the metal framework on the other side.

You may meet some resistance near the center of the iPod as there is a mild adhesive used to help hold the two pieces together.

Carefully work around the edge of the iPod to separate the front panel from the metal framework.

Lift the framework (including the attached display, logic board, and click wheel) away from the front panel.

Make sure that the click wheel button is in place before reinstalling the framework in the front panel.

The front panel should now be free from the rest of the iPod.