If that is the modern mirror and clock available from the vendors, it cannot be repaired. I tried. Although I am not a clock repair man, I have repaired many clocks in the past. The modern wind up clock on the mirror is glued together and to the mirror and is is ruined if you try to pry it apart. You can buy a cheap battery powered clock on the internet that will run for a long time and the battery can be replaced when it goes flat. That is what I did, and just glued the clock onto the back of the mirror with silicone adhesive. Doesn't say Ford but works great.